摘要:

To assess the role of Tc-99m IDA cholescintigraphy in diagnosing bile leakage and bile obstruction after laparoscopic cholecystectomy, 51 studies were performed in 51 patients on the first postoperative day. Two different radioactive bile acid analogs were used, Tc-99m HlDA and Tc-99m trimethylbromo IDA. Scintigraphic findings were correlated with the clinical conditions. Results of seven out of 51 cholescintigrams were abnormal, showing accumulations of activity in the right paracolic gutter. Of these seven patients, only three had clinical symptoms consisting of more than normal postoperative abdominal pain and peritoneal irritation. The other four patients had minimal abnormal accumulation in the right paracolic gutter and showed no clinical signs postoperatively. Complete common bile duct obstruction or other bile duct-related complications, except for bile leakage, were not observed. Cholescintigraphy is feasible for the early detection of bile leakage and bile flow obstruction after laparoscopic cholecystectomy in patients with increased postoperative abdominal discomfort.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The usual scintigraphic presentation of a Meckel's diverticulum is progressive accumulation of Tc-99m pertechnetate within the ectopic gastric mucosa that parallels uptake in the stomach. The authors present a case of an adult with acute gastrointestinal bleeding, negative endoscopic and radiologic evaluation, and atypical scintigraphy. An abnormal focus of uptake appeared at the same time as the stomach but faded away in the 15-minute image before reappearing while the stomach was still progressively accumulating the radioisotope. Meckel's diverticulum was confirmed by surgery. This case emphasizes the importance of scintigraphy in the evaluation of gastrointestinal bleeding, and it further emphasizes that any uptake that cannot be physiologically related is suspicious, even in a young adult.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The authors report a transient, unilateral reverse ventilation/perfusion (V/P) mismatch in a patient with squamous cell lung cancer. The right lung was well perfused but not ventilated (unilateral reverse V/P mismatch). However, lung imaging performed 3 days later demonstrated the absence of both perfusinon and ventilation (V/P match). Reverse V/P mismatch may be a transient process.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

A patient underwent intracavitary P-32 chromic phosphate therapy for a chest tumor. Tc-99m sulfur colloid instilled before the P-32 demonstrated uniform distribution of activity throughout the right pleural space, and the P-32 was immediately administered. Ten days later, SPECT imaging using bremsstrahlung radiation of the P-32 showed an unexpected loculation of the P-32. A subsequent chest CT scan demonstrated pleural infolding and fluid localization in the same area as the P-32, indicating that the bremsstrahlung SPECT study had, in fact, documented the final localization of the P-32, which was unexpected and different from the initial localization. The procedure used in this case may be of value in documenting the ultimate distribution of intracavitary P-32.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Although labeled leukocyte imaging is an extremely useful technique for the localization of infection, false-positive results in inflammatory conditions where no infection exists have been described. False-positive results secondary to bleeding have also been reported. The authors recently observed intense uptake of labeled cells in the wound dressings of two patients undergoing leukocyte imaging. Repeat imaging after the removal of these dressings confirmed that the activity seen was in the dressings and did not represent focal infection, as originally thought. Based on these observations, the authors think it prudent to remove such dressings before performing leukocyte imaging.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Material absorbing photons aligned with the lumbar vertebrae can create falsely elevated measurements of bone mineral density during dual-photon absorptiometry. Three cases illustrating this phenomenon are presented. Although bone mineral density was overestimated in each case, calculated fracture risk was normal in two cases and greatly increased in the third. Photon-absorbing material can create overestimates of bone mineral density during dual-photon absorptiometry, even when a greatly increased fracture risk is computed.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Stress fracture of the hand is uncommon but can be a significant source of morbidity if not promptly diagnosed. The authors present a case of metacarpal stress fracture in which the occupational history was key to the diagnosis and management of long-standing hand pain.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The authors describe the scintigraphic findings of bone and Ga-67 imaging performed on three patients thought to have Pott's puffy tumor. Two patients did indeed have it, but the third patient's "puffy tumor" was a soft tissue abscess.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Arterio-arterial embolism of carotid origin is one major cause of cerebral ischemia. To evaluate the role of blood platelets in this process, In-1 11 labeled platelet scintigraphy was performed in a series of 250 patients. Of this number, one patient with an 80% carotid stenosis and a normal intracerebral angiogram suffered a transient ischemic attack (TIA) several hours after the injection of radiolabeled platelets. The scintigram showed a pathologic platelet accumulation in the symptomatic carotid area as well as in the ipsilateral brain hemisphere. The authors conclude that this scintigraphic finding of hemispheric platelet aggregates recorded directly after a clinically observed TIA, together with previous observations of retinal emboli after amaurosis fugax attacks, provides strong evidence for the arterio-arterial embolic mechanism of TIA.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The authors describe a patient with Rasmussen's syndrome detected by grossly abnormal results of Tc-99m HMPAO SPECT brain imaging obtained with a singleheaded camera. Results of magnetic resonance imaging and cerebrospinal fluid examinations were normal.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID