摘要:

Thirty-three adrenal scintigrams in 30 patients were reviewed to determine the utility of this noninvasive imaging technique. It was found to be very accurate in distinguishing bilateral from unilateral hyperfunction in patients who have clinical and biochemical evidence of adrenal cortical hyperfunction. The technique proved correct in 12 of 12 cases of Cushing's syndrome and 14 of 19 cases of hyperaldosteronism. Specific clinical questions were also answered in three miscellaneous cases.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Massive lower gastrointestinal (Gl) bleeding caused by gallbladder carcinoma eroding into the colonic wall was demonstrated accurately by Tc-99m RBCs. In addition, retrograde bleeding into the gallbladder was also identified while arteriography did not show contrast extravasation. This case supports the use of Tc-99m RBCs over Tc-99m sulfur colloid for more accurate localization of lower Gl bleeding.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Twenty-seven paired Tc-99m sulfur colloid (SC) and Tc- 99m RBC studies were evaluated for the detection of Gl bleeding. The only two positive Tc-99m SC studies had positive early Tc-99m RBC studies as well. There were 15 other positive Tc-99m RBC studies (three during the first hour) and these were associated with normal Tc- 99m SC scans. Approximately 70% of the positive Tc- 99m RBC studies occurred after 1 hour. Tc-99m RBCs should be the initial test in patients with Gl bleeding.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

A Tc-99m IDA scan was performed in a patient with severe alkaline esophagitis subsequent to a Bilroth I gastroenterostomy. The scan showed enterogastric reflux simultaneously with gastroesophageal reflux of bile. The study was recorded in a computer and the reflux quantitated.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Continuous ambulatory peritoneal dialysis (CAPD) is commonly used in patients with renal failure as an alternative to hemodialysis. A not infrequent complication is scrotal swelling due to bowel or fluid passing through a patent processus vaginalis secondary to increased abdominal pressure. A radionuclide study using Tc-99m sulfur colloid is a safe and simple method to determine if this complication is present or may be used as a pre-CAPD screening procedure.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Fifty-five consecutive patients with colorectal carcinoma and hepatic metastases on the Tc-99m sulfur colloid liver/spleen scan (TSC) were evaluated to see if the pattern of spread of colorectal metastases was affected by the venous drainage of the primary site. The results suggest that significant streaming probably exists in the portal vein and the spread of metastases to the liver is affected by it. This information has a potential clinical implication in terms of diagnostic workup and chemotherapeutic infusions. It also supports the speculation that a streaming effect exists in humans.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

Dual tracer parathyroid imaging (DTPI) using Tc-99m and TI-201 has a reported sensitivity of 92% for the detection of parathyroid adenomas. A patient with biopsyproven parathyroid adenoma as well as papillary thyroid carcinoma is presented. To date, this is the first such case ever to be reported and implies that DTPI, although a sensitive diagnostic modality for parathyroid adenoma detection, is not specific. The diagnosis of primary hyperparathyroidism has recently been established more frequently than in the past due to detection of elevated serum calcium levels on routine blood samples, relatively sensitive parathormone (PTH) assays, and noninvasive imaging modalities such as nuclear medicine, CT scanning, and ultrasonography. At our institution, we have successfully detected the location of parathyroid adenomas in many cases, using the dual tracer method with TI-201 and Tc-99m, confirmed at surgery. We present a case of primary hyperparathyroidism in which two distinct lesions were detected by nuclear imaging: one lesion was proven at surgery to be a parathyroid adenoma, while the other represented thyroid carcinoma.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

TI-201 myocardial perfusion imaging was performed in six patients with clinically documented myocarditis. Each case manifested electrocardiographic abnormalities with elevation of serum cardiac enzymes and no significant stenosis of the coronary arteries observed on angiogram. Resting TI-201 images were visually assessed by three observers. Focal perfusion defects were observed in three cases (50%), among which two showed multiple perfusion defects. Emission computed tomography using TI-201 clearly delineated multifocal lesions in the first case. On the other hand, no significant perfusion defects were noted in the remaining three cases. Thus, myocarditis should be considered as one of the disease entities that may produce perfusion defects on TI-201 myocardial imaging.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

A young man with papillary-follicular thyroid carcinoma demonstrated clear visualization of cervical metastases from thyroid cancer on Tc-99m pertechnetate scintigraphy while exhibiting a palpably and scintigraphically normal thyroid gland. This is a very rare occurrence which demonstrates that Tc-99m pertechnetate scintigraphy is capable of detecting cervical metastases from thyroid carcinoma before the appearance of palpable thyroid nodules or defects on scintigraphy.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID

摘要:

This case report describes a patient in whom concentration of Tc-99m pertechnetate in a renal calyx created a false diagnostic impression of ectopic gastric mucosa. The administration of furosemide demonstrated the benign cause of the focus.

ISSN:0363-9762    

出版商:OVID    

年代:1985

数据来源: OVID