Peter Callen, MD

Professor Emeritus
Prof In Residence

Biography

Dr. Peter W. Callen, MD, is a Professor of Radiology, Obstetrics, Gynecology, and Reproduction Sciences at the University of California, San Francisco. He obtained his medical degree from the University of California, San Francisco in 1973, and completed his residency in Diagnostic Radiology from UCSF in 1977, followed by a fellowship at the University of California, San Francisco.

Dr. Callen’s general research has been focused on discovering the sonographic signs that allow the sonographer to detect abnormalities and avoid false positive diagnosis of abnormalities in the obstetric, pediatric and adult patient. A specific area of interest has been in fetal dysmorphology and the detection of abnormalities involving the fetal, neural axis, thorax, skeletal system, genitourinary tract, gastrointestinal, and abnormalities of the placenta and umbilical cord.

Dr. Callen has published more than 200 peer-reviewed articles, and 65 book chapters. He is well known for his textbook, Ultrasonography in Obstetric and Gynecology, now in its fifth edition and considered the most extensively used book on obstetrical ultrasound worldwide.

Expertise:
Ultrasound

Specialty:
Obstetrical, gynecology, pediatric urology

Professional Interests:
Obstetrical ultrasound, fetal dysmorphology, internet based learning, application of PACS systems to diagnostic ultrasound, perception of normal and abnormal findings at the time of ultrasound examination

Education and Training:
• Medical School: University of California, San Francisco School of Medicine
• Internship: University of California, San Francisco - Medicine
• Residency: University of California, San Francisco - Diagnostic Radiology
• Fellowship: University of California, San Francisco
• National Board of Medical Examiners
• California Medical License
• American Board of Radiology

Education

M.D., 1973 - Medicine, University of California, San Francisco
Residency, - School of Medicine, University of California, San Francisco

Honors and Awards

Outstanding Alumni Award, University of California, San Francisco, 2010
Fellow, American Institute of Ultrasound in Medicine, 1986
Commendation for Excellence in Teaching, University of California, San Francisco Department of Obstetrics and Gynecology, 1982

Publications

Courtier J, Schauer GM, Parer JT, Regenstein AC, Callen PW, Glenn OA. Polymicrogyria in a fetus with human parvovirus B19 infection: a case with radiologic-pathologic correlation. Ultrasound Obstet Gynecol. 2012 Nov; 40(5):604-6.
Shoo BA, Kangelaris G, Callen PW, Kashani-Sabet M, Leong SP. Detection of occult melanoma by preoperative positron emission tomography-computed tomography and intraoperative ultrasonography. J Cutan Med Surg. 2010 May-Jun; 14(3):130-5.
Filly MR, Callen PW, Yegul NT, Filly RA. The yolk stalk sign: evidence of death in small embryos without heartbeats. J Ultrasound Med. 2010 Feb; 29(2):237-41.
Qayyum A, Chen DM, Breiman RS, Westphalen AC, Yeh BM, Jones KD, Lu Y, Coakley FV, Callen PW. Evaluation of diffuse liver steatosis by ultrasound, computed tomography, and magnetic resonance imaging: which modality is best? Clin Imaging. 2009 Mar-Apr; 33(2):110-5.
Blackman J, Liddicoat A, Callen P, Marshall R. Degenerating leiomyoma presenting as a large pelvic cyst in pregnancy. J Obstet Gynaecol. 2008 Apr; 28(3):342-3.
Kassab A, El-Bialy G, Hashesh H, Callen P. Magnetic resonance imaging and hysteroscopy to diagnose colo-uterine fistula: a rare complication of diverticulitis. J Obstet Gynaecol Res. 2008 Feb; 34(1):117-20.
Callen PW, Callen AL, Glenn OA, Toi A. Columns of the fornix, not to be mistaken for the cavum septi pellucidi on prenatal sonography. J Ultrasound Med. 2008 Jan; 27(1):25-31.
Glenn OA, Bianco K, Barkovich AJ, Callen PW, Parer JT. Fetal cerebellar hemorrhage in parvovirus-associated non-immune hydrops fetalis. J Matern Fetal Neonatal Med. 2007 Oct; 20(10):769-72.
Yang SH, Nobuhara KK, Keller RL, Ball RH, Goldstein RB, Feldstein VA, Callen PW, Filly RA, Farmer DL, Harrison MR, Lee H. Reliability of the lung-to-head ratio as a predictor of outcome in fetuses with isolated left congenital diaphragmatic hernia at gestation outside 24-26 weeks. Am J Obstet Gynecol. 2007 Jul; 197(1):30.e1-7.
Kassab A, El-Bialy G, Clark J, Callen P, Powari M, Jones H. Unusual presentation of 22-kilogram retroperitoneal müllerian serous cystadenoma. Gynecol Oncol. 2007 Jan; 104(1):257-9.
Aziz S, Callen PW, Vincenti F, Hirose R. Rapidly developing nephrocalcinosis in a patient with end-stage liver disease who received a domino liver transplant from a patient with known congenital oxalosis. J Ultrasound Med. 2005 Oct; 24(10):1449-52.
Williams G, Coakley FV, Qayyum S, Glenn OA, Breiman RS, Callen PW. Evaluation of femur length during the second and third trimesters in fetuses with myelomeningocele. Ultrasound Obstet Gynecol. 2004 Feb; 23(2):148-51.
Wu YW, Hamrick SE, Miller SP, Haward MF, Lai MC, Callen PW, Barkovich AJ, Ferriero DM. Intraventricular hemorrhage in term neonates caused by sinovenous thrombosis. Ann Neurol. 2003 Jul; 54(1):123-6.
Keller RL, Glidden DV, Paek BW, Goldstein RB, Feldstein VA, Callen PW, Filly RA, Albanese CT. The lung-to-head ratio and fetoscopic temporary tracheal occlusion: prediction of survival in severe left congenital diaphragmatic hernia. Ultrasound Obstet Gynecol. 2003 Mar; 21(3):244-9.
Kinoshita LL, Callen PW, Filly RA, Hill LM. Sonographic detection of gallbladder duplication: two cases discovered in utero. J Ultrasound Med. 2002 Dec; 21(12):1417-21.
Paek BW, Callen PW, Kitterman J, Feldstein VA, Farrell J, Harrison MR, Albanese CT. Successful fetal intervention for congenital high airway obstruction syndrome. Fetal Diagn Ther. 2002 Sep-Oct; 17(5):272-6.
Filly RA, Reddy SG, Nalbandian AB, Lu Y, Callen PW. Sonographic evaluation of liver nodularity: Inspection of deep versus superficial surfaces of the liver. J Clin Ultrasound. 2002 Sep; 30(7):399-407.
Bredella MA, Feldstein VA, Filly RA, Goldstein RB, Callen PW, Genant HK. Measurement of endometrial thickness at US in multicenter drug trials: value of central quality assurance reading. Radiology. 2000 Nov; 217(2):516-20.
Skaife T, Callen PW, Coakley F. Prenatal sonographic findings in fetal cirrhosis secondary to hemochromatosis. J Ultrasound Med. 2000 Apr; 19(4):285-8.
Vincoff NS, Callen PW, Smith-Bindman R, Goldstein RB. Effect of ultrasound transducer frequency on the appearance of the fetal bowel. J Ultrasound Med. 1999 Dec; 18(12):799-803; quiz 805-6.
Gushiken BJ, Callen PW, Silverman NH. Prenatal diagnosis of tuberous sclerosis in monozygotic twins with cardiac masses. J Ultrasound Med. 1999 Feb; 18(2):165-8.
Levine D, Callen PW, Pender SG, McArdle CR, Messina L, Shekhar A, Wong GP. Chorioamniotic separation after second-trimester genetic amniocentesis: importance and frequency. Radiology. 1998 Oct; 209(1):175-81.
Patton WL, Lutz AM, Willmann JK, Callen P, Barkovich AJ, Gooding CA. Systemic spread of meconium peritonitis. Pediatr Radiol. 1998 Sep; 28(9):714-6.
Levine D, Goldstein RB, Callen PW, Damato N, Kilpatrick S. The effect of oligohydramnios on detection of fetal anomalies with sonography. AJR Am J Roentgenol. 1997 Jun; 168(6):1609-11.
Patel MD, Callen PW, Mar JB, Filly RA, Goldstein RB, Feldstein VA. Evaluation of a sonographic PACS in clinical practice: analysis of technical and analytical time savings. J Ultrasound Med. 1996 Nov; 15(11):755-62.
Levine D, Kilpatrick S, Damato N, Callen PW. Dolichocephaly and oligohydramnios in preterm premature rupture of the membranes. J Ultrasound Med. 1996 May; 15(5):375-9.
Patel MD, Cheng AG, Callen PW. Lateral ventricular effacement as an isolated sonographic finding in premature infants: prevalence and significance. AJR Am J Roentgenol. 1995 Jul; 165(1):155-9.
Levine D, Callen PW, Goldstein RB, Damato NM, Groffsky JL, Filly RA. Imaging the fetal abdomen: how efficacious are the AIUM/ACR guidelines? J Ultrasound Med. 1995 May; 14(5):335-41; quiz 375-6.
Chang MC, Russell SA, Callen PW, Filly RA, Goldstein RB. Sonographic detection of inferior vermian agenesis in Dandy-Walker malformations: prognostic implications. Radiology. 1994 Dec; 193(3):765-70.
Babcook CJ, Hedrick MH, Goldstein RB, Callen PW, Harrison MR, Adzick NS, Filly RA. Gastroschisis: can sonography of the fetal bowel accurately predict postnatal outcome? J Ultrasound Med. 1994 Sep; 13(9):701-6.
Babcook CJ, Goldstein RB, Barth RA, Damato NM, Callen PW, Filly RA. Prevalence of ventriculomegaly in association with myelomeningocele: correlation with gestational age and severity of posterior fossa deformity. Radiology. 1994 Mar; 190(3):703-7.
Fries MH, Filly RA, Callen PW, Goldstein RB, Goldberg JD, Golbus MS. Growth retardation in prenatally diagnosed cases of gastroschisis. J Ultrasound Med. 1993 Oct; 12(10):583-8.
Patel MD, Olcott EW, Kerschmann RL, Callen PW, Gooding GA. Sonographically detected testicular microlithiasis and testicular carcinoma. J Clin Ultrasound. 1993 Sep; 21(7):447-52.
Filly RA, Callen PW, Goldstein RB. Alpha-fetoprotein screening programs: what every obstetric sonologist should know. Radiology. 1993 Jul; 188(1):1-9.
Robbin M, Filly RA, Fell S, Goldstein RB, Callen PW, Goldberg JD, Golbus MS. Elevated levels of amniotic fluid alpha-fetoprotein: sonographic evaluation. Radiology. 1993 Jul; 188(1):165-9.
Fries MH, Goldstein RB, Kilpatrick SJ, Golbus MS, Callen PW, Filly RA. The role of velamentous cord insertion in the etiology of twin-twin transfusion syndrome. Obstet Gynecol. 1993 Apr; 81(4):569-74.
Nelson NL, Filly RA, Goldstein RB, Callen PW. The AIUM/ACR antepartum obstetrical sonographic guidelines: expectations for detection of anomalies. J Ultrasound Med. 1993 Apr; 12(4):189-96.
Harlow K, Johnson R, Callen P. Comparison of physical health benefits utilization. Mental and physical health claimants, 1989 and 1990. J Occup Med. 1993 Mar; 35(3):275-81.
Amerhauser A, Moelleken BR, Mathes SJ, Gooding G, Goldstein R, Callen P, Filly RA. Color flow ultrasound for delineating microsurgical vessels: a clinical and experimental study. Ann Plast Surg. 1993 Mar; 30(3):193-202; discussion 202-3.
Ball RH, Filly RA, Goldstein RB, Callen PW. The lemon sign: not a specific indicator of meningomyelocele. J Ultrasound Med. 1993 Mar; 12(3):131-4.
Damato N, Filly RA, Goldstein RB, Callen PW, Goldberg J, Golbus M. Frequency of fetal anomalies in sonographically detected polyhydramnios. J Ultrasound Med. 1993 Jan; 12(1):11-5.
Nelson NL, Callen PW, Filly RA. The choroid plexus pseudocyst: sonographic identification and characterization. J Ultrasound Med. 1992 Nov; 11(11):597-601.
Hoffman CK, Filly RA, Callen PW. The "lying down" adrenal sign: a sonographic indicator of renal agenesis or ectopia in fetuses and neonates. J Ultrasound Med. 1992 Oct; 11(10):533-6.
Kuller JA, Yankowitz J, Goldberg JD, Harrison MR, Adzick NS, Filly RA, Callen PW, Golbus MS. Outcome of antenatally diagnosed cystic adenomatoid malformations. Am J Obstet Gynecol. 1992 Oct; 167(4 Pt 1):1038-41.
Filly RA, Goldstein RB, Callen PW. Fetal ventricle: importance in routine obstetric sonography. Radiology. 1991 Oct; 181(1):1-7.
Obana WG, Cogen PH, Callen PW, Edwards MS. Ultrasound-guided aspiration of a neonatal brain abscess. Childs Nerv Syst. 1991 Sep; 7(5):272-3; discussion 274.
Anderson RL, Golbus MS, Curry CJ, Callen PW, Hastrup WH. Central nervous system damage and other anomalies in surviving fetus following second trimester antenatal death of co-twin. Report of four cases and literature review. Prenat Diagn. 1990 Aug; 10(8):513-8.
Crombleholme TM, Harrison MR, Golbus MS, Longaker MT, Langer JC, Callen PW, Anderson RL, Goldstein RB, Filly RA. Fetal intervention in obstructive uropathy: prognostic indicators and efficacy of intervention. Am J Obstet Gynecol. 1990 May; 162(5):1239-44.
Filly RA, Goldstein RB, Callen PW. Monochorionic twinning: sonographic assessment. AJR Am J Roentgenol. 1990 Mar; 154(3):459-69.
Harrison MR, Langer JC, Adzick NS, Golbus MS, Filly RA, Anderson RL, Rosen MA, Callen PW, Goldstein RB, deLorimier AA. Correction of congenital diaphragmatic hernia in utero, V. Initial clinical experience. J Pediatr Surg. 1990 Jan; 25(1):47-55; discussion 56-7.
Goldstein RB, Podrasky AE, Filly RA, Callen PW. Effacement of the fetal cisterna magna in association with myelomeningocele. Radiology. 1989 Aug; 172(2):409-13.
Goldstein RB, Filly RA, Callen PW. Sonography of anencephaly: pitfalls in early diagnosis. J Clin Ultrasound. 1989 Jul-Aug; 17(6):397-402.
Schmidt KG, Silverman NH, Harison MR, Callen PW. High-output cardiac failure in fetuses with large sacrococcygeal teratoma: diagnosis by echocardiography and Doppler ultrasound. J Pediatr. 1989 Jun; 114(6):1023-8.
Longaker MT, Laberge JM, Dansereau J, Langer JC, Crombleholme TM, Callen PW, Golbus MS, Harrison MR. Primary fetal hydrothorax: natural history and management. J Pediatr Surg. 1989 Jun; 24(6):573-6.
Golbus MS, McGonigle KF, Goldberg JD, Filly RA, Callen PW, Anderson RL. Fetal tissue sampling. The San Francisco experience with 190 pregnancies. West J Med. 1989 Apr; 150(4):423-30.
Crombleholme TM, Harrison MR, Langer JC, Longaker MT, Anderson RL, Slotnick NS, Filly RA, Callen PW, Goldstein RB, Golbus MS. Early experience with open fetal surgery for congenital hydronephrosis. J Pediatr Surg. 1988 Dec; 23(12):1114-21.
Hudgins RJ, Edwards MS, Goldstein R, Callen PW, Harrison MR, Filly RA, Golbus MS. Natural history of fetal ventriculomegaly. Pediatrics. 1988 Nov; 82(5):692-7.
Golbus MS, Cunningham N, Goldberg JD, Anderson R, Filly R, Callen P. Selective termination of multiple gestations. Am J Med Genet. 1988 Oct; 31(2):339-48.
Bond SJ, Harrison MR, Filly RA, Callen PW, Anderson RA, Golbus MS. Severity of intestinal damage in gastroschisis: correlation with prenatal sonographic findings. J Pediatr Surg. 1988 Jun; 23(6):520-5.
Townsend RR, Goldstein RB, Filly RA, Callen PW, Anderson RL, Golbus M. Sonographic identification of autosomal recessive polycystic kidney disease associated with increased maternal serum/amniotic fluid alpha-fetoprotein. Obstet Gynecol. 1988 Jun; 71(6 Pt 2):1008-12.
Townsend RR, Filly RA, Callen PW, Laros RK. Factors affecting prenatal sonographic estimation of weight in extremely low birthweight infants. J Ultrasound Med. 1988 Apr; 7(4):183-7.
Randel SB, Filly RA, Callen PW, Anderson RL, Golbus MS. Amniotic sheets. Radiology. 1988 Mar; 166(3):633-6.
Simpson GF, Edwards MS, Callen P, Filly RF, Anderson RL, Golbus MS. Pressure, biochemical, and culture characteristics of CSF associated with the in utero drainage of various fetal CNS defects. Am J Med Genet. 1988 Feb; 29(2):343-51.
Goldstein RB, Filly RA, Callen PW. Sonographic diagnosis of meconium ileus in utero. J Ultrasound Med. 1987 Nov; 6(11):663-6.
Hashimoto B, Filly RA, Callen PW, Parer JT. Absorption of fetal intraperitoneal blood after intrauterine transfusion. J Ultrasound Med. 1987 Aug; 6(8):421-3.
Ruvolo KA, Filly RA, Callen PW. Evaluation of fetal femur length for prediction of gestational age in a racially mixed obstetric population. J Ultrasound Med. 1987 Aug; 6(8):417-9.
Kleiner B, Callen PW, Filly RA. Sonographic analysis of the fetus with ureteropelvic junction obstruction. AJR Am J Roentgenol. 1987 Feb; 148(2):359-63.
Hashimoto B, Filly RA, Belden C, Callen PW, Laros RK. Objective method of diagnosing oligohydramnios in postterm pregnancies. J Ultrasound Med. 1987 Feb; 6(2):81-4.
Grundy H, Anderson RL, Filly RA, Callen P, Goldberg JD, Slotnick RN, Golbus MS. Gastroschisis: prenatal diagnosis and management. Fetal Ther. 1987; 2(3):144-7.
Langer JC, Harrison MR, Adzick NS, Longaker MT, Crombleholme TM, Golbus MS, Anderson RL, Callen PW, Filly RA. Perinatal management of the fetus with an abdominal wall defect. Fetal Ther. 1987; 2(4):216-21.
Himelman RB, Callen PW. The prognostic value of loculations in parapneumonic pleural effusions. Chest. 1986 Dec; 90(6):852-6.
Hoddick W, Filly RA, Backman U, Callen PW, Vincenti F, Hricak H, Mahony BS, Amend W. Renal allograft rejection: US evaluation. Radiology. 1986 Nov; 161(2):469-73.
Kleiner B, Filly RA, Mack L, Callen PW. Multicystic dysplastic kidney: observations of contralateral disease in the fetal population. Radiology. 1986 Oct; 161(1):27-9.
Li DK, Cooperberg PL, Graham MF, Callen P. Pseudo perisplenic "fluid collections": a clue to normal liver and spleen echogenic texture. J Ultrasound Med. 1986 Jul; 5(7):397-400.
Hashimoto B, Callen PW, Filly RA, Laros RK. Ultrasound evaluation of polyhydramnios and twin pregnancy. Am J Obstet Gynecol. 1986 May; 154(5):1069-72.
Callen PW, Hashimoto BE, Newton TH. Sonographic evaluation of cerebral cortical mantle thickness in the fetus and neonate with hydrocephalus. J Ultrasound Med. 1986 May; 5(5):251-5.
Hashimoto BE, Filly RA, Callen PW. Multicystic dysplastic kidney in utero: changing appearance on US. Radiology. 1986 Apr; 159(1):107-9.
Hashimoto BE, Filly RA, Callen PW. Sonographic detection of fetal intraperitoneal fluid. J Ultrasound Med. 1986 Apr; 5(4):203-4.
Kurtz AB, Filly RA, Wapner RJ, Golbus MS, Rifkin MR, Callen PW, Pasto ME. In utero analysis of heterozygous achondroplasia: variable time of onset as detected by femur length measurements. J Ultrasound Med. 1986 Mar; 5(3):137-40.
Hashimoto BE, Filly RA, Callen PW. Fetal pseudoascites: further anatomic observations. J Ultrasound Med. 1986 Mar; 5(3):151-2.
Hashimoto BE, Filly RA, Callen PW. Sonographic diagnosis of clubfoot in utero. J Ultrasound Med. 1986 Feb; 5(2):81-3.
Callen PW, Chooljian D. The effect of ventricular dilatation upon biometry of the fetal head. J Ultrasound Med. 1986 Jan; 5(1):17-9.
Wiener-Kronish JP, Matthay MA, Callen PW, Filly RA, Gamsu G, Staub NC. Relationship of pleural effusions to pulmonary hemodynamics in patients with congestive heart failure. Am Rev Respir Dis. 1985 Dec; 132(6):1253-6.
LaBerge JM, Callen PW. Sonographic detection of drainage catheter debris. J Ultrasound Med. 1985 Nov; 4(11):629-30.
Adzick NS, Harrison MR, Glick PL, Golbus MS, Anderson RL, Mahony BS, Callen PW, Hirsch JH, Luthy DA, Filly RA. Fetal cystic adenomatoid malformation: prenatal diagnosis and natural history. J Pediatr Surg. 1985 Oct; 20(5):483-8.
Mahony BS, Callen PW, Filly RA. Fetal urethral obstruction: US evaluation. Radiology. 1985 Oct; 157(1):221-4.
McCarthy SM, Filly RA, Stark DD, Callen PW, Golbus MS, Hricak H. Magnetic resonance imaging of fetal anomalies in utero: early experience. AJR Am J Roentgenol. 1985 Oct; 145(4):677-82.
Hoddick WK, Mahony BS, Callen PW, Filly RA. Placental thickness. J Ultrasound Med. 1985 Sep; 4(9):479-82.
Abrams SL, Callen PW, Anderson RL, Stephens JD. Anencephaly with encephalocele in craniopagus twins: prenatal diagnosis by ultrasonography and computed tomography. J Ultrasound Med. 1985 Sep; 4(9):485-8.
Glick PL, Harrison MR, Golbus MS, Adzick NS, Filly RA, Callen PW, Mahony BS, Anderson RL, deLorimier AA. Management of the fetus with congenital hydronephrosis II: Prognostic criteria and selection for treatment. J Pediatr Surg. 1985 Aug; 20(4):376-87.
Glick PL, Harrison MR, Adzick NS, Filly RA, deLorimier AA, Callen PW. The missing link in the pathogenesis of gastroschisis. J Pediatr Surg. 1985 Aug; 20(4):406-9.
Cooper C, Mahony BS, Bowie JD, Albright TO, Callen PW. Ultrasound evaluation of the normal fetal upper airway and esophagus. J Ultrasound Med. 1985 Jul; 4(7):343-6.
Holzgreve W, Mahony BS, Glick PL, Filly RA, Harrison MR, Delorimier AA, Holzgreve AC, Muller KM, Callen PW, Anderson RL. Sonographic demonstration of fetal sacrococcygeal teratoma. Prenat Diagn. 1985 Jul-Aug; 5(4):245-57.
Golbus MS, Filly RA, Callen PW, Glick PL, Harrison MR, Anderson RL. Fetal urinary tract obstruction: management and selection for treatment. Semin Perinatol. 1985 Jul; 9(2):91-7.
Abrams SL, Callen PW, Filly RA. Umbilical vein thrombosis: sonographic detection in utero. J Ultrasound Med. 1985 Jun; 4(6):283-5.
Weber WN, Sickles EA, Callen PW, Filly RA. Nonpalpable breast lesion localization: limited efficacy of sonography. Radiology. 1985 Jun; 155(3):783-4.
Hashimoto BE, Mahony BS, Filly RA, Golbus MS, Anderson RL, Callen PW. Sonography, a complementary examination to alpha-fetoprotein testing for fetal neural tube defects. J Ultrasound Med. 1985 Jun; 4(6):307-10.
Mahony BS, Filly RA, Callen PW, Golbus MS. The amniotic band syndrome: antenatal sonographic diagnosis and potential pitfalls. Am J Obstet Gynecol. 1985 May 01; 152(1):63-8.
Stark DD, McCarthy SM, Filly RA, Parer JT, Hricak H, Callen PW. Pelvimetry by magnetic resonance imaging. AJR Am J Roentgenol. 1985 May; 144(5):947-50.
Onik G, Gilbert J, Hoddick W, Filly R, Callen P, Rubinsky B, Farrel L. Sonographic monitoring of hepatic cryosurgery in an experimental animal model. AJR Am J Roentgenol. 1985 May; 144(5):1043-7.
Stark DD, McCarthy SM, Filly RA, Callen PW, Hricak H, Parer JT. Intrauterine growth retardation: evaluation by magnetic resonance. Work in progress. Radiology. 1985 May; 155(2):425-7.
Mahony BS, Filly RA, Nyberg DA, Callen PW. Sonographic evaluation of ectopic pregnancy. J Ultrasound Med. 1985 May; 4(5):221-8.
Mahony BS, Filly RA, Callen PW. Amnionicity and chorionicity in twin pregnancies: prediction using ultrasound. Radiology. 1985 Apr; 155(1):205-9.
Nakayama DK, Harrison MR, Chinn DH, Callen PW, Filly RA, Golbus MS, De Lorimier AA. Prenatal diagnosis and natural history of the fetus with a congenital diaphragmatic hernia: initial clinical experience. J Pediatr Surg. 1985 Apr; 20(2):118-24.
Mahony BS, Callen PW, Filly RA. The distal femoral epiphyseal ossification center in the assessment of third-trimester menstrual age: sonographic identification and measurement. Radiology. 1985 Apr; 155(1):201-4.
Siedler DE, Mahony BS, Hoddick WK, Callen PW. A specular reflection arising from the ventricular wall: a potential pitfall in the diagnosis of germinal matrix hemorrhage. J Ultrasound Med. 1985 Mar; 4(3):109-12.
Mahony BS, Filly RA, Callen PW, Golbus MS. Thanatophoric dwarfism with the cloverleaf skull: a specific antenatal sonographic diagnosis. J Ultrasound Med. 1985 Mar; 4(3):151-4.
McCarthy SM, Stark DD, Filly RA, Callen PW, Hricak H, Higgins CB. Obstetrical magnetic resonance imaging: maternal anatomy. Radiology. 1985 Feb; 154(2):421-5.
Hoddick WK, Filly RA, Mahony BS, Callen PW. Minimal fetal renal pyelectasis. J Ultrasound Med. 1985 Feb; 4(2):85-9.
McCarthy SM, Filly RA, Stark DD, Hricak H, Brant-Zawadzki MN, Callen PW, Higgins CB. Obstetrical magnetic resonance imaging: fetal anatomy. Radiology. 1985 Feb; 154(2):427-32.
Holzgreve W, Curry CJ, Golbus MS, Callen PW, Filly RA, Smith JC. Investigation of nonimmune hydrops fetalis. Am J Obstet Gynecol. 1984 Dec 01; 150(7):805-12.
Parer JT, Lichtenberg ES, Callen PW, Feduska N. Iliac venous aneurysm in a pregnant patient with a renal transplant. A case report. J Reprod Med. 1984 Dec; 29(12):869-71.
Mahony BS, Callen PW, Filly RA, Hoddick WK. The fetal cisterna magna. Radiology. 1984 Dec; 153(3):773-6.
Hoddick WK, Callen PW, Filly RA, Mahony BS, Edwards MB. Ultrasound evaluation of benign sciatic nerve sheath tumors. J Ultrasound Med. 1984 Nov; 3(11):505-7.
Hoddick WK, Callen PW, Filly RA, Creasy RK. Ultrasonographic determination of qualitative amniotic fluid volume in intrauterine growth retardation: reassessment of the 1 cm rule. Am J Obstet Gynecol. 1984 Aug 01; 149(7):758-62.
Nakayama DK, Harrison MR, Gross BH, Callen PW, Filly RA, Golbus MS, Stephens JD, de Lorimier AA. Management of the fetus with an abdominal wall defect. J Pediatr Surg. 1984 Aug; 19(4):408-13.
Mahony BS, Filly RA, Callen PW, Hricak H, Golbus MS, Harrison MR. Fetal renal dysplasia: sonographic evaluation. Radiology. 1984 Jul; 152(1):143-6.
Glick PL, Harrison MR, Nakayama DK, Edwards MS, Filly RA, Chinn DH, Callen PW, Wilson SL, Golbus MS. Management of ventriculomegaly in the fetus. J Pediatr. 1984 Jul; 105(1):97-105.
Mahony BS, Callen PW, Filly RA, Golbus MS. Progression of infantile polycystic kidney disease in early pregnancy. J Ultrasound Med. 1984 Jun; 3(6):277-9.
Mahony BS, Filly RA, Callen PW, Chinn DH, Golbus MS. Severe nonimmune hydrops fetalis: sonographic evaluation. Radiology. 1984 Jun; 151(3):757-61.
Sickles EA, Filly RA, Callen PW. Benign breast lesions: ultrasound detection and diagnosis. Radiology. 1984 May; 151(2):467-70.
Filly RA, Chinn DH, Callen PW. Alobar holoprosencephaly: ultrasonographic prenatal diagnosis. Radiology. 1984 May; 151(2):455-9.
Hecht ST, Filly RA, Callen PW, Wilson-Davis SL. Intracranial hemorrhage: late onset in the preterm neonate. Radiology. 1983 Dec; 149(3):697-9.
Filly RA, Golbus MS, Harrison MR, Callen PW. Re: Prenatal diagnosis and treatment of fetal hydronephrosis: how realistic? Radiology. 1983 Dec; 149(3):875-7.
Chinn DH, Callen PW. Ultrasound of the acutely ill obstetrics and gynecology patient. Radiol Clin North Am. 1983 Sep; 21(3):585-94.
Chinn DH, Callen PW, Filly RA. The lateral cerebral ventricle in early second trimester. Radiology. 1983 Aug; 148(2):529-31.
Fink IJ, Chinn DH, Callen PW. A potential pitfall in the ultrasonographic diagnosis of fetal encephalocele. J Ultrasound Med. 1983 Jul; 2(7):313-4.
Wall SD, Callen PW. Radiology-important advances in clinical medicine: needle biopsy. West J Med. 1983 Jul; 139(1):88.
Chinn DH, Filly RA, Callen PW, Nakayama DK, Harrison MR. Congenital diaphragmatic hernia diagnosed prenatally by ultrasound. Radiology. 1983 Jul; 148(1):119-23.
Callen PW, Bolding D, Filly RA, Harrison MR. Ultrasonographic evaluation of fetal paranephric pseudocysts. J Ultrasound Med. 1983 Jul; 2(7):309-12.
Jeffrey RB, Laing FC, Wong W, Callen PW. Gangrenous cholecystitis: diagnosis by ultrasound. Radiology. 1983 Jul; 148(1):219-21.
Chinn DH, Bolding DB, Callen PW, Gross BH, Filly RA. Ultrasonographic identification of fetal lower extremity epiphyseal ossification centers. Radiology. 1983 Jun; 147(3):815-8.
Hricak H, Slovis TL, Callen CW, Callen PW, Romanski RN. Neonatal kidneys: sonographic anatomic correlation. Radiology. 1983 Jun; 147(3):699-702.
Sickles EA, Filly RA, Callen PW. Breast cancer detection with sonography and mammography: comparison using state-of-the-art equipment. AJR Am J Roentgenol. 1983 May; 140(5):843-5.
Gross BH, Chinn DH, Callen PW, Filly RA. Real-time vs. static scanning in the diagnosis of abdominal and pelvic abscesses. J Ultrasound Med. 1983 May; 2(5):223-4.
Kerr GR, Amante P, Decker M, Callen PW. Supermarket sales of high-sugar products in predominantly Black, Hispanic, and white census tracts of Houston, Texas. Am J Clin Nutr. 1983 Apr; 37(4):622-31.
Mahony BS, Gross BH, Callen PW, Filly RA, Edwards MS. Intraventricular hemorrhage following ventriculoperitoneal shunt placement: real-time ultrasonographic demonstration. J Ultrasound Med. 1983 Mar; 2(3):143-5.
Gross BH, Harter LP, Gore RM, Callen PW, Filly RA, Shapiro HA, Goldberg HI. Ultrasonic evaluation of common bile duct stones: prospective comparison with endoscopic retrograde cholangiopancreatography. Radiology. 1983 Feb; 146(2):471-4.
Stephens JD, Filly RA, Callen PW, Golbus MS. Prenatal diagnosis of osteogenesis imperfecta type II by real-time ultrasound. Hum Genet. 1983; 64(2):191-3.
Harrison MR, Filly RA, Golbus MS, Berkowitz RL, Callen PW, Canty TG, Catz C, Clewell WH, Depp R, Edwards MS, Fletcher JC, Frigoletto FD, Garrett WJ, Johnson ML, Jonsen A, De Lorimier AA, Liley WA, Mahoney MJ, Manning FD, Meier PR, Michejda M, Nakayama DK, Nelson L, Newkirk JB, Pringle K, Rodeck C, Rosen MA, Schulman JD. Fetal treatment 1982. N Engl J Med. 1982 Dec 23; 307(26):1651-2.
Harrison MR, Golbus MS, Filly RA, Nakayama DK, Callen PW, de Lorimier AA, Hricak H. Management of the fetus with congenital hydronephrosis. J Pediatr Surg. 1982 Dec; 17(6):728-42.
Kerlan RK, Sollenberger RD, Palubinskas AJ, Raskin NH, Callen PW, Ehrenfeld WK. Portal-systemic encephalopathy due to a congenital portocaval shunt. AJR Am J Roentgenol. 1982 Nov; 139(5):1013-5.
Gore RM, Callen PW, Filly RA, Harrison MR, Golbus MS. Prenatal percutaneous antegrade pyelography in posterior urethral valves: sonographic guidance. AJR Am J Roentgenol. 1982 Nov; 139(5):994-6.
Gross BH, Callen PW, Filly RA. The relationship of fetal transverse body diameter and biparietal diameter in the diagnosis of intrauterine growth retardation. J Ultrasound Med. 1982 Nov-Dec; 1(9):361-5.
Harter LP, Gross BH, Callen PW, Barth RA. Ultrasonic evaluation of abdominal aortic thrombus. J Ultrasound Med. 1982 Oct; 1(8):315-8.
Slotnick N, Filly RA, Callen PW, Golbus MS. Sonography as a procedure complementary to alpha-fetoprotein testing for neural tube defects. J Ultrasound Med. 1982 Oct; 1(8):319-22.
Fink IJ, Filly RA, Callen PW, Fiske CC. Sonographic diagnosis of thanatophoric dwarfism in utero. J Ultrasound Med. 1982 Oct; 1(8):337-9.
Glazer GM, Filly RA, Callen PW. The varied sonographic appearance of the urinary tract in the fetus and newborn with urethral obstruction. Radiology. 1982 Aug; 144(3):563-8.
Gore RM, Callen PW, Filly RA. Lesser sac fluid in predicting the etiology of ascites: CT findings. AJR Am J Roentgenol. 1982 Jul; 139(1):71-4.
Chinn DH, Filly RA, Callen PW. Ultrasonic evaluation of fetal umbilical and hepatic vascular anatomy. Radiology. 1982 Jul; 144(1):153-7.
Kerr GR, Amante P, Decker M, Callen PW. Ethnic patterns of salt purchase in Houston, Texas. Am J Epidemiol. 1982 Jun; 115(6):906-16.
Brown BM, Filly RA, Callen PW. Ultrasonographic anatomy of the caudate lobe. J Ultrasound Med. 1982 Jun-Jul; 1(5):189-92.
Chinn DH, Filly RA, Callen PW. Unusual ultrasonographic appearance of a solid schwannoma. J Clin Ultrasound. 1982 May-Jun; 10(5):243-5.
Harrison MR, Golbus MS, Filly RA, Callen PW, Katz M, de Lorimier AA, Rosen M, Jonsen AR. Fetal surgery for congenital hydronephrosis. N Engl J Med. 1982 Mar 11; 306(10):591-3.
Gore RM, Callen PW, Filly RA. Displaced retroperitoneal fat: sonographic guide to right upper quadrant mass localization. Radiology. 1982 Mar; 142(3):701-5.
Gross BH, Callen PW, Filly RA. Ultrasound appearance of fetal greater omentum. J Ultrasound Med. 1982 Mar; 1(2):67-9.
Golbus MS, Harrison MR, Filly RA, Callen PW, Katz M. In utero treatment of urinary tract obstruction. Am J Obstet Gynecol. 1982 Feb 15; 142(4):383-8.
Marks WM, Filly RA, Callen PW. Real-time evaluation of pleural lesions: new observations regarding the probability of obtaining free fluid. Radiology. 1982 Jan; 142(1):163-4.
Glazer GM, Callen PW, Filly RA. Medullary nephrocalcinosis: sonographic evaluation. AJR Am J Roentgenol. 1982 Jan; 138(1):55-7.
Callen PW, Filly RA. Computed tomography and ultrasonography of primary liver tumors. Radiology. 1981 Dec; 141(3):849.
Glazer GM, Callen PW, Parker JJ. CT diagnosis of tumor thrombus in the inferior vena cava: avoiding the false-positive diagnosis. AJR Am J Roentgenol. 1981 Dec; 137(6):1265-7.
Fiske CE, Filly RA, Callen PW. The normal choroid plexus: ultrasonographic appearance of the neonatal head. Radiology. 1981 Nov; 141(2):467-71.
Parer JT, Callen PW, Creasy RK, Filly RA. Intrauterine transfusion under sonographic guidance. J Reprod Med. 1981 Nov; 26(11):551-4.
Munyer TP, Callen PW, Filly RA, Braga CA, Jones HW. Further observations on the sonographic spectrum of gestational trophoblastic disease. J Clin Ultrasound. 1981 Sep; 9(7):349-58.
Fiske CE, Filly RA, Callen PW. Sonographic measurement of lateral ventricular width in early ventricular dilation. J Clin Ultrasound. 1981 Jul-Aug; 9(6):303-7.
Chinn DH, Filly RA, Callen PW. Prediction of intrauterine growth retardation by sonographic estimation of total intrauterine volume. J Clin Ultrasound. 1981 Apr; 9(4):175-9.
Marks WM, Callen PW, Moss AA. Gastroesophageal region: source of confusion on CT. AJR Am J Roentgenol. 1981 Feb; 136(2):359-62.
Fiske CE, Filly RA, Callen PW. Solid parenchymal lesions of the kidney. J Clin Ultrasound. 1981 Feb; 9(2):A37-8.
Fiske CE, Callen PW. Fluid collections ultrasonically simulating urinary bladder. J Can Assoc Radiol. 1980 Dec; 31(4):254-5.
Marks WM, Filly RA, Callen PW. Ultrasonic evaluation of normal pancreatic echogenicity and its relationship to fat deposition. Radiology. 1980 Nov; 137(2):475-9.
Jeffrey RB, Callen PW, Federle MP. Computed tomography of psoas abscesses. J Comput Assist Tomogr. 1980 Oct; 4(5):639-41.
Marks WM, Callen PW. Computed tomography in the evaluation of patients with surgical clips. Surg Gynecol Obstet. 1980 Oct; 151(4):557-8.
Callen PW, Filly RA, Munyer TP. Intrauterine contraceptive devices: evaluation by sonography. AJR Am J Roentgenol. 1980 Oct; 135(4):797-800.
Marcus FS, Friedman MA, Callen PW, Churg A, Harbour J. Successful therapy of an ACTH-producing gastric carcinoid APUD tumor: report of a case and review of the literature. Cancer. 1980 Sep 01; 46(5):1263-9.
Callen PW, Filly RA, Marcus FS. Ultrasonography and computed tomography in the evaluation of hepatic microabscesses in the immunosuppressed patient. Radiology. 1980 Aug; 136(2):433-4.
Woodward RM, Filly RA, Callen PW. First trimester molar pregnancy: nonspecific ultrasonographic appearance. Obstet Gynecol. 1980 Mar; 55(3 Suppl):31S-33S.
Callen PW, Filly RA. The placental-subplacental complex: a specific indicator of placental position on ultrasound. J Clin Ultrasound. 1980 Feb; 8(1):21-6.
Callen PW, London SS, Moss AA. Computed tomographic evaluation of the dilated pancreatic duct: the value of thin-section collimation. Radiology. 1980 Jan; 134(1):253-5.
Callen P, Goldsworthy S, Graves L, Harvey D, Mellows H, Parkinson C. Mode of delivery and the lecithin/sphingomyelin ratio. Br J Obstet Gynaecol. 1979 Dec; 86(12):965-8.
Callen PW, Marks WM. Lymphomatous masses simulating cysts by ultrasonography. J Can Assoc Radiol. 1979 Dec; 30(4):244-6.
Callen PW, Filly RA. Ultrasonographic localization of the gallbladder. Radiology. 1979 Dec; 133(3 Pt 1):687-91.
Marks WM, Filly RA, Callen PW, Laing FC. The decidual cast of ectopic pregnancy: a confusing ultrasonographic appearance. Radiology. 1979 Nov; 133(2):451-4.
Callen PW, Marks WM, Filly RA. Computed tomography and ultrasonography in the evaluation of the retroperitoneum in patients with malignant ascites. J Comput Assist Tomogr. 1979 Oct; 3(5):581-4.
Callen PW, Filly RA, Marks WM. The quadratus lumborum muscle: a possible source of confusion in sonographic evaluation of the retroperitoneum. J Clin Ultrasound. 1979 Oct; 7(5):349-52.
Federle MP, Callen PW. Cystic Hodgkin's lymphoma of the thymus: computed tomography appearance. J Comput Assist Tomogr. 1979 Aug; 3(4):542-4.
Korobkin M, Callen PW, Fisch AE. Computed tomography of the pelvis and retroperitoneum. Radiol Clin North Am. 1979 Aug; 17(2):301-19.
Callen PW, Breiman RS, Korobkin M, De Martini WJ, Mani JR. Carcinoma of the tail of the pancreas: an unusual CT appearance. AJR Am J Roentgenol. 1979 Jul; 133(1):135-7.
Callen PW, Filly RA, Creasy RK, Parer JT. Ultrasonography in the evaluation of intrauterine transfusion. Obstet Gynecol. 1979 May; 53(5):656-9.
Royal SA, Callen PW. CT evaluation of anomalies of the inferior vena cava and left renal vein. AJR Am J Roentgenol. 1979 May; 132(5):759-63.
Callen PW, DeMartini WJ, Filly RA. The central uterine cavity echo: a useful anatomic sign in the ultrasonographic evaluation of the female pelvis. Radiology. 1979 Apr; 131(1):187-90.
Marks WM, Filly RA, Callen PW. Ultrasonic anatomy of the liver: a review with new applications. J Clin Ultrasound. 1979 Apr; 7(2):137-46.
Callen PW. Computed tomographic evaluation of abdominal and pelvic abscesses. Radiology. 1979 Apr; 131(1):171-5.
Callen PW. Normal ultrasonic appearance of the ligamentum teres and falciform ligament. J Clin Ultrasound. 1979 Apr; 7(2):81.
Rosenthal SJ, Filly RA, Callen PW, Sommer FG. Fetal pseudoascites. Radiology. 1979 Apr; 131(1):195-7.
Callen PW, Filly RA, Sarti DA, Sample WF. Ultrasonography of the diaphragmatic crura. Radiology. 1979 Mar; 130(3):721-4.
Callen PW, Filly RA, DeMartini WJ. The left portal vein: a possible source of confusion on ultrasonograms. Radiology. 1979 Jan; 130(1):205-6.
Goldberg HI, Filly RA, Korobkin M, Moss AA, Kressel HY, Callen PW. Capability of CT body scanning and ultrasonography to demonstrate the status of the biliary ductal system in patients with jaundice. Radiology. 1978 Dec; 129(3):731-7.
Kressel HY, Callen PW, Montagne JP, Korobkin M, Goldberg HI, Moss AA, Arger PH, Margulis AR. Computed tomographic evaluation of disorders affecting the alimentary tract. Radiology. 1978 Nov; 129(2):451-5.
Korobkin M, Moss AA, Callen PW, DeMartini WJ, Kaiser JA. Computed tomography of subcapsular splenic hematoma. Clinical and experimental studies. Radiology. 1978 Nov; 129(2):441-5.
Marks WM, Korobkin M, Callen PW, Kaiser JA. CT diagnosis of tumor thrombosis of the renal vein and inferior vena cava. AJR Am J Roentgenol. 1978 Nov; 131(5):843-6.
Korobkin M, Callen PW, Filly RA, Hoffer PB, Shimshak RR, Kressel HY. Comparison of computed tomography, ultrasonography, and gallium-67 scanning in the evaluation of suspected abdominal abscess. Radiology. 1978 Oct; 129(1):89-93.
Callen PW, Filly RA, Korobkin M. Ascitic fluid in the anterior paravesical fossa: misleading appearance on CT scans. AJR Am J Roentgenol. 1978 Jun; 130(6):1176-7.
Filly RA, Callen PW. Ultrasonography in the evaluation of nontraumatic abdominopelvic emergencies. Radiol Clin North Am. 1978 Apr; 16(1):159-73.
Callen PW, Filly RA, Korobkin M. Computed tomographic evaluation of the diaphragmatic crura. Radiology. 1978 Feb; 126(2):413-6.
Callen PW, Korobkin M, Isherwood I. Computed tomographic evaluation of the retrocrural prevertebral space. AJR Am J Roentgenol. 1977 Nov; 129(5):907-10.
Maxwell R, Roht LH, Callen P. Incidence of sudden infant death syndrome in Texas, 1969-1972; estimation by the surrogate method. Tex Med. 1976 Oct; 72(10):58-66.
Roht LH, Nelson RO, Callen P. Induced abortion in Texas. Tex Med. 1976 Apr; 72(4):84-91.
Roht LH, Aoyama H, Leinen GE, Callen PW. The association of multiple induced abortions with subsequent prematurity and spontaneous abortion. Acta Obstet Gynaecol Jpn. 1976 Apr; 23(2):140-5.
Condon RE, Callen P, Beltz WR, Van Meter SW, Pissiotis CA, Nichols RL. Serosal onlay repair of common duct stricture. Am J Surg. 1974 Jan; 127(1):13-8.
Fréour P, Bernadou M, Leguay L, Galleno A, Callen P, Tessier JF. [Clinical trial of Versapen in pneumophtisiology]. Bord Med. 1971 Dec; 4(12):3769-74.
Bauer RB, Meyer JS, Fields WS, Remington R, Macdonald MC, Callen P. Joint study of extracranila arterial occlusion. 3. Progress report of controlled study of long-term survival in patients with and without operation. JAMA. 1969 Apr 21; 208(3):509-18.