Positions

Selected Publications

Academic Article

Year Title Altmetric
2019 Trade-off between pulse rate and radiation dose during modified barium swallow examination: what is the reality?Clinical Radiology.  74:736.e9-736.e12. 2019
2018 Anti-reflux procedures: complications, radiologic findings, and surgical and gastroenterologic perspectivesAbdominal radiology (New York).  43:1308-1318. 2018
2006 Faculty development program for residents: An incentive to faculty recruitmentJournal of the American College of Radiology.  3:220-222. 2006
2005 Mock radiology oral examinationAcademic Radiology.  12:368-372. 2005
2003 Computerized tomographic colonography: Performance evaluation in a retrospective multicenter settingGastroenterology.  125:688-695. 2003
2003 Double Reading of Barium Enemas: Is It Necessary?American Journal of Roentgenology.  181:1607-1610. 2003
2000 Advances in gastrointestenal intervention: The treatment of gastroduodenal and colorectal obstructions with metallic stentsRadiology.  215:659-669. 2000
2000 Intramural tracking: A feature of esophageal intramural pseudodiverticulosisAmerican Journal of Roentgenology.  175:371-374. 2000
1999 Botulinum toxin versus pneumatic dilatation in the treatment of achalasia: A randomized trialGut.  44:231-239. 1999
1999 Comparison of two barium suspensions for dedicated small-bowel seriesAmerican Journal of Roentgenology.  172:379-382. 1999
1999 Pancreas divisum: Implications for diagnostic and therapeutic pancreatographyAmerican Journal of Roentgenology.  173:193-198. 1999
1998 Expandable metal stents for the treatment of colonic obstruction: Techniques and outcomesGastrointestinal Endoscopy.  47:277-286. 1998
1998 Hysterosalpingography with videofluoroscopy: Effect on radiologic practice in an academic medical centerAcademic Radiology.  5:480-484. 1998
1997 Timed barium swallow: A simple technique for evaluating esophageal emptying in patients with achalasiaAmerican Journal of Roentgenology.  169:473-479. 1997
1997 Traumatic dissection of the inferior vena cavaAmerican Journal of Roentgenology.  168:253-254. 1997
1997 Treatment of colonic obstruction with expandable metal stents: Radiologic featuresAmerican Journal of Roentgenology.  168:199-205. 1997
1996 Expandable metal stents for treatment of colonic obstructionGastrointestinal Endoscopy.  43:363. 1996
1995 Mast cell cholangiopathy: Another cause of sclerosing cholangitisGastroenterology.  109:1677-1681. 1995
1995 Nodular sarcoidosis of the liver and spleen: Analysis of 32 casesRadiology.  195:757-762. 1995
1995 Picture archiving communication systems in the intensive care unitRadiology.  196:297-304. 1995
1994 AIDS-related cholangiopancreatographic changes 1994
1994 Detection of gastroesophageal reflux: Value of barium studies compared with 24-hr pH monitoringAmerican Journal of Roentgenology.  162:621-629. 1994
1994 Omeprazole versus H2-receptor antagonists in treating patients with peptic stricture and esophagitisGastroenterology.  106:907-915. 1994
1994 Treatment of Achalasia: The Best of Both WorldsAmerican Journal of Gastroenterology.  89:979-985. 1994
1993 Radiology of the small intestineCurrent Opinion in Gastroenterology.  9:222-228. 1993
1992 Radiology of the small intestineCurrent Opinion in Gastroenterology.  8:239-245. 1992
1991 Radiology of the small intestineCurrent Opinion in Gastroenterology.  7:248-255. 1991
1990 Computer facilitation of the resident selection processInvestigative Radiology.  25:1040-1043. 1990
1989 CT and MR imaging in the evaluation of retroperitoneal fibrosisJournal of Computer Assisted Tomography: a radiological journal dedicated to the basic and clinical aspects of reconstructive tomography.  13:277-281. 1989
1988 Preoperative evaluation of abdominal aortic aneurysm by MR imaging with aortography correlationCardiovascular and Interventional Radiology.  11:329-335. 1988
1987 Magnetic resonance imaging of the internal anatomy of the prostate glandInvestigative Radiology.  22:947-953. 1987
1987 Malignant hemangiopericytoma: Computed tomography and magnetic resonance imagingThe Journal of computed tomography.  11:297-300. 1987
1987 The case for radioprotective eyewear/facewear practical implications and suggestionsInvestigative Radiology.  22:688-692. 1987
1986 Current status of whole body imaging with magnetic resonance.The Alabama journal of medical sciences.  23:312-317. 1986
1986 Ultrasound of the breast. What are the indications?The Alabama journal of medical sciences.  23:192-195. 1986
1986 Functional adrenal disease: Radiologic evaluation in a patient with anomalous kidneysAmerican Journal of Roentgenology.  147:289-290. 1986
1986 Multiple cavernous hemangiomas of the spleen: CT findingsJournal of Computer Assisted Tomography: a radiological journal dedicated to the basic and clinical aspects of reconstructive tomography.  10:338-340. 1986
1986 Retractile mesenteritis involving the colon: Pathologic and radiologic correlation (case report)American Journal of Roentgenology.  147:268-270. 1986
1985 Magnetic resonance imaging.The Alabama journal of medical sciences.  22:141-143. 1985
1985 Hand-held real-time breast sonographyAmerican Journal of Roentgenology.  144:623-627. 1985
1984 Abdominal tuberculosis: Ct findingsJournal of Computer Assisted Tomography: a radiological journal dedicated to the basic and clinical aspects of reconstructive tomography.  8:443-445. 1984
1984 Thrombophlebitis of the Internal Jugular Vein: Noninvasive ImagingSouthern Medical Journal.  77:1308-1310. 1984
1983 Nodular duodenitis - Pathologic and clinical characteristics in patients with end-stage renal diseaseDigestive Diseases and Sciences.  28:1018-1024. 1983
1983 Abdominal pain, arthritis, purpura, and malabsorption in a 61-year-old man.The Alabama journal of medical sciences.  20:417-424. 1983
1983 CT of the thorax in patients with achalasiaDigestive Diseases and Sciences.  28:692-697. 1983
1983 Assessment of patients with failed gastric operations for morbid obesityThe American Journal of Surgery.  145:357-363. 1983
1983 Barium examination of the pharynx after vertical hemilaryngectomyAmerican Journal of Roentgenology.  141:335-339. 1983
1983 CT appearance of sclerosing cholangitisAmerican Journal of Roentgenology.  141:549-552. 1983
1983 Computed tomographic features of biliary obstructionAmerican Journal of Roentgenology.  140:1173-1178. 1983
1983 Computed tomography in the staging of esophageal carcinomaRadiology.  146:433-438. 1983
1983 Radiologic evaluation of complications after esophagogastrectomyAmerican Journal of Roentgenology.  140:1163-1169. 1983
1982 Metastatic disease of the mesentery and omentumRadiologic Clinics of North America.  20:501-510. 1982
1982 A prospective comparison of the evaluation of biliary obstruction using computed tomography and ultrasonographyRadiology.  145:91-98. 1982
1982 Barium examination of the esophagus after total laryngectomyRadiology.  143:501-508. 1982
1982 Radiographic abnormalities after gastric bypassAmerican Journal of Roentgenology.  138:267-270. 1982
1982 The clinical significance of large lymphoid follicles of the colonRadiology.  142:41-46. 1982
1981 Clinical manifestations of epidermolysis bullosa dystrophicaDigestive Diseases and Sciences.  26:1144-1149. 1981
1981 Clinical and radiographic manifestations of aortoesophageal fistulasRadiology.  141:599-605. 1981
1981 Computed tomography of gastric neoplasmsRadiology.  140:431-436. 1981
1981 Evaluation of three effervescent agents for double-contrast upper gastrointestinal radiography 1981
1981 Gastric bypass for morbid obesity. A medical-surgical assessmentAnnals of Surgery.  194:152-160. 1981
1981 Gastric bypass: Analysis of weight loss and factors determining successSurgery.  90:446-455. 1981
1981 Resolution of radiographic-endoscopic discrepancies in colon neoplasmsJournal of Clinical Gastroenterology.  3:89-93. 1981
1981 Routine air-contrast esophagography during upper gastrointestinal examinationsRadiology.  139:739-741. 1981
1981 Selected cases from the Film Interpretation Session of the Society of Gastrointestinal Radiologists, October 6-11, 1980, Maui, Hawaii. Case 2 1981
1981 Selected cases from the film interpretation session of the Society of Gastrointestinal Radiologists, October 6-11, 1980, Maui, Hawaii 1981
1980 Cholecystosonography: Accuracy, pitfalls and unusual findingsThe American Journal of Surgery.  139:223-228. 1980
1980 Cystic artery hemorrhage: A complication of penetrating duodenal ulcerRadiology.  136:623-625. 1980
1980 Diffuse colonic nodularity and splenomegalyInvestigative Radiology.  15:2-5. 1980
1980 Diverticular disease in patients with chronic renal failure due to polycystic kidney diseaseAnnals of Internal Medicine.  92:202-204. 1980
1980 Limitations of the post-lymphangiogram plain abdominal radiograph as an indicator of recurrent lymphoma: Comparison to computed tomographyRadiology.  134:155-158. 1980
1980 Noncirrhotic nodular transformation of the liver with portal hypertension: Clinical, angiographic, and pathological correlationGastroenterology.  79:938-943. 1980
1980 Significance of retained barium in the appendixAmerican Journal of Roentgenology.  135:753-756. 1980
1980 Single- and double-contrast techniques in esophagitisAmerican Journal of Roentgenology.  135:15-19. 1980
1979 Common hepatic duct obstruction by cystic duct stone: Mirizzi syndromeAmerican Journal of Roentgenology.  132:1007-1009. 1979
1979 Focal irregularity of the rectal mucosaAmerican Journal of Roentgenology.  133:677-681. 1979
1979 Iosefamate meglumine: An iodinated contrast agent for hepatic computed tomography scanningRadiology.  132:115-118. 1979
1979 Ultrasonic localization of a non-palpable testis tumorThe Journal of Urology.  122:843-844. 1979
1978 Arteriographic examination in suspected small-bowel ischemiaAmerican Journal of Digestive Diseases.  23:853-861. 1978
1978 Complementary use of ultrasound and computed tomography in studies of the pancreas and kidneyRadiology.  126:149-152. 1978
1978 Computed tomographic angiography of the bodyRadiology.  126:807-811. 1978
1978 Double channel pylorusAmerican Journal of Roentgenology.  130:1047-1050. 1978
1978 Oral cholecystography in chronic renal insufficiencyAmerican Journal of Digestive Diseases.  23:829-832. 1978
1978 Prolonged gallbladder opacification after oral cholecystographyRadiology.  128:601-603. 1978
1977 Combined cholangiography and cholecystography using sodium iopanoateInvestigative Radiology.  12:267-272. 1977
1977 Invasion of the duodenum by carcinoma of the stomachAmerican Journal of Roentgenology.  128:201-205. 1977
1977 Loculated pneumoperitoneum simulating gas in the bowel wallRadiology.  123:30. 1977
1976 Radiologic diagnosis of disordered esophageal motility. A unified physiologic approachRadiologic Clinics of North America.  14:429-439. 1976
1976 Early radiographic manifestations of carcinoma of the esophagusRadiology.  119:1-5. 1976
1976 In vivo measurement of hepatic iodine concentration using fluorescent excitation analysisInvestigative Radiology.  11:134-137. 1976
1976 Initial accuracy of esophagograms in detection of small esophageal carcinomaAmerican Journal of Roentgenology.  127:909-913. 1976
1976 Radiographic evaluation of complications after jejunoileal bypass surgeryAmerican Journal of Roentgenology.  127:737-741. 1976
1976 Use of substrate coated barium sulfate tablets in the evaluation of digestive enzyme deficiencyRadiology.  120:303-306. 1976
1975 Arteriographic demonstration of collateral arterial supply to the liver after hepatic artery ligationRadiology.  117:49-54. 1975

Education And Training

  • Doctor of Medicine, Cornell University 1968
  • Full Name

  • Robert Koehler