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Biomedical subjects

D B Bach

Publications and source records attributed to D B Bach.

11 recordsLinked to original sources
PubMed1992

Adenocarcinoma of the pancreatic ducts: comparative evaluation with CT and MR imaging at 1.5 T.

A prospective comparison of computed tomography (CT) and magnetic resonance (MR) imaging at 1.5 T was performed in 50 patients with the suspected diagnosis of pancreatic carcinoma. CT scans were obtained before and after administration of contrast material in 41 of 50 patients (82%); 34 of 41 postcontrast scans (83%) were obtained with dynamic CT. MR images were interpreted without knowledge of the results of CT, ultrasound, cholangiography, or endoscopic retrograde cholangiopancreatography in 48 patients (96%). Surgical correlation of findings at CT and MR imaging was performed in 24 patients (48%) at laparotomy and in two patients (4%) at autopsy. On T1-weighted MR images, relatively diminished signal intensity of tumor compared with that of the adjacent pancreas was a consistent finding. MR imaging proved superior to CT in identification of pancreatic carcinoma (particularly in smaller intrapancreatic tumors), peripancreatic extension, vascular and portal vein invasion, and duodenal invasion. These results suggest that MR imaging of the pancreas is superior in many instances to CT in preoperative evaluation of pancreatic carcinoma.

Adenocarcinoma↗
PubMed1992

CT findings in patients with small-bowel transplants.

Orthotopic small-bowel transplantation procedures are being performed increasingly often worldwide. CT plays an important role in both the preoperative assessment and the postoperative care of these patients. This pictorial essay serves to acquaint radiologists with the CT findings related to small-bowel transplantation.

Abscess↗
PubMed1992

Peripancreatic fluid collections: vascular structures masquerading as pseudocysts.

Five patients with splanchnic arterial aneurysms and one patient with a tortuous splenic vessel presented with peripancreatic masses that exhibited an anechoic portion in real-time ultrasonography (US) images; the masses were incorrectly diagnosed as pseudocysts. In two patients a vascular abnormality was suspected, and colour-flow Doppler and pulsed Doppler US were performed; these techniques showed the presence of pseudoaneurysms. In the other four patients the possibility of a pseudoaneurysm was not entertained until further studies had been performed. These results emphasize the need for colour-duplex US evaluation of all peripancreatic fluid collections during the initial US examination to avoid the misinterpretation of an aneurysm or a pseudoaneurysm as a simple or complex fluid collection and to prevent the potential disaster of performing biopsy, surgery or other interventions.

Adult↗
PubMed1991

Human orthotopic small intestine transplantation: radiologic assessment.

The authors describe the postoperative anatomy and review the radiologic examinations of five patients who underwent orthotopic small intestine or combined orthotopic liver and small intestine transplantation. Mucosal thickening of the transplanted intestine was demonstrated on the first postoperative contrast material-enhanced images and was due to submucosal edema. This resolved within 2 weeks in the long-term survivors. Bowel peristalsis appeared normal as early as 31 days after transplantation. Contrast-enhanced examinations of the intestine were useful to exclude surgical complications such as anastomotic leaks or strictures, but were insensitive for biopsy-proved cytomegalovirus enteritis or rejection.

Adult↗
PubMed1991

Telebrix: a better-tasting oral contrast agent for abdominal computed tomography.

In a randomized, controlled, double-blind trial, Telebrix 38 (ioxithalamate) and Gastrografin (diatrizoate) were compared with respect to taste and degree of opacification of the alimentary canal when used in computed tomography of the abdomen and pelvis. Bowel opacification was excellent with both contrast agents. Patients rated the 2% solution of Telebrix in water significantly better in taste than the control contrast medium, a 2% solution of Gastrografin in water. Of the patients in the Telebrix group 89% judged the taste to be excellent or good, compared with 59% in the Gastrografin group (p = 0.012, Fisher's exact test). Only 1 of 28 patients in the Telebrix group was unwilling to drink Telebrix again, compared with 6 of 27 patients in the Gastrografin group (p = 0.045, Fisher's exact test). There were no significant side effects. Dilute Telebrix 38 is preferable to dilute Gastrografin, in terms of taste and patient tolerance, for bowel opacification on computed tomography, and produces equivalent, excellent bowel opacification.

Administration, Oral↗
PubMed1989

An integrated team approach to the management of patients with oropharyngeal dysphagia.

This paper describes a team approach to the assessment and management of patients with oropharyngeal dysphagia of neurologic origin. The team's major focus was to determine the need for adjustments to the patient's diet to maintain or restore the safety of oral feeding. This involved the development of a detailed radiographic examination and a series of dysphagia diets, in addition to comprehensive evaluations by an occupational therapist, physiotherapist, and speech pathologist. The effects of deteriorating swallowing ability on the physical, cognitive, and emotional status of the patient are discussed in the context of a multidisciplinary approach.

Aged↗
PubMed1989

Digital teleradiology: Seaforth--London network.

A total digital teleradiology system using a prototype DuPont laser beam scanner (DTR 2000) and a Bell Canada digital transmission network was evaluated. A total of 489 radiographic and ultrasonographic examinations were transmitted for interpretation from a 41-bed rural community hospital in Seaforth to the University Hospital in London, Ontario, 80 km away. There was concurrence in 98% of these examinations, i.e. the laser-sensitive facsimile film clearly duplicated the original film findings and allowed a confident interpretation to be made. We conclude that this system could readily serve the needs of family physicians in rural communities for radiologic consultation, diagnosis, management, and triage of patients 24 hours per day.

Evaluation Studies as Topic↗
PubMed1987

Single-contrast examination of the duodenum following enteroclysis.

Important abnormalities of the distal duodenum can be missed on the usual enteroclysis examination because of placement of the intubation tube beyond the ligament of Treitz. This can be avoided by extending the examination to include visualization of the duodenum during withdrawal of the nasojejunal tube. On the basis of the case reported here this procedure is suggested for patients with unexplained upper gastrointestinal bleeding in whom the remainder of the small bowel is normal.

Adult↗