摘要:

The scintigraphic characteristics of superior vena caval obstruction are presented together with a discussion of the relevant vascular anatomy. Alterations in scintigraphic venous blood flow patterns of a patient who underwent two surgical bypass procedures for symptomatic relief of superior vena caval obstruction are shown.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

Intravenous injection of Tc-99m-labeled radionuclides permits angioscintigraphic and blood pool visualization of both supra- and infradiaphragmatic organs. By adding this procedure to routine bone scans an improvement in the diagnostic yield of incidentally observed renal abnormalities was achieved. Several illustrative cases involving hyper- and hypovascular lesions are presented. The authors recommended increased use of immediate postinjection blood pool studies in all routine brain and bone scans as a means of renal screening at negligible cost.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

Difficulties in correlation of Tc-99m-MDP bone scintigraphy and radiography of “growing” bone islands were encountered in two cases. The sensitive nature of bone scintigraphy as a metabolic indicator and the slow, inconstant growth rate of bone islands are presumed to cause the difficulties in correlation.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

Gastrointestinal carcinoid tumors arising from the foregut and hindgut may metastasize within the abdomen. Bone metastases are rare, but their occurrence is well established. Both osteoblastic and osteolytic metastases can occur in the same patient without any bone symptoms. Three patients with malignant carcinoid tumors had no bone symptoms but demonstrated extensive bone metastases on radionuclide bone scans. Some of these lesions were abnormal on corresponding roentgenograms and some areas were negative on roentgenograms. The use of radionuclide bone scanning in the evaluation of patients with malignant carcinoid tumor is emphasized.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

In an experimental model we have demonstrated that visualization of the target organ is the only dependable criterion for the scintigraphic evaluation of LeVeen shunt patency or nonpatency. The lungs are best suited as the target, because the presence or absence of pulmonary uptake can be easily seen without interference from radiolabeled peritoneal fluid. Proof of shunt patency should not rely upon direct visualization of shunt tubing, because very high or low flow rates are both associated with poor visualization. Maximum accumulation of activity in the shunt tubing occurs with intermediate flow raies (˜60 cc/hr).

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

Thirty-eight patients (28 boys and 10 girls) with hip pain were referred for bone scans. In 7 of 8 with Legg-Calvé-Perthes disease, there was decreased uptake of the radiopharmaceutical in the proximal femoral epiphysis; the other had radiographic evidence of joint destruction and showed increased uptake. Three patients with abnormal scans had normal x-rays with Gaucher's disease, toxic synovitis, and Legg-Calvé-Perthes disease, respectively. One patient with avascular necrosis associated with steroid therapy had increased uptake, possibly due to revascularization. Those with toxic synovitis had either normal bone scans or showed a slight generalized increase around the hip joint. It is speculated that the latter may represent those who later present with Legg-Calvé-Perthes. The bone scan is useful for the early detection of Legg-Calvé-Perthes disease in patients with hip pain.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

The correct diagnosis of RSD can be difficult. We have found bone scanning helpful in evaluating 18 patients, making the diagnosis in 13 and excluding it in five. A characteristic pattern of uptake is demonstrated and the results summarized.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

摘要:

In two patients, skull lesions radiologically typical of epidermoid tumor, but surgically unproven, showed intense concentration of Tc-99m-MDP. The lesions were also faintly positive with Tc-99m-DTPA and Ga-67-citrate.

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID

ISSN:0363-9762    

出版商:OVID    

年代:1980

数据来源: OVID