摘要:

The authors describe a patient with primary hyperparathyroidism who had a large mediastinal parathyroid adenoma that avidly concentrated both Tc-99m pertechnetate and TI-201. This unusual finding is presented as another potential reason for false-negative findings in Tc-99m/TI-201 subtraction scintigraphy in hyperparathyroidism.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The clinical usefulness of hepatobiliary scintigraphy was evaluated in pediatric liver transplant recipients. One hundred fifteen hepatobiliary scintigraphic studies were performed in 30 patients who received 22 whole liver and 16 segmental grafts. Parameters that were useful in predicting an adverse outcome were failure to visualize excreted radiopharmaceutical at or beyond the biliary anastomosis on a study performed within 24 hours after transplant, and persistent or increasing delay in the time of visualization of excreted radiopharmaceutical. Abnormalities of liver uptake and excretion were seen in rejection, but they were also seen in patients who remained well without rejection or parenchymal disease. Significant biliary leaks were identified in the three cases in which they were known to be present. In liver transplant recipients, hepatobiliary imaging is useful in predicting graft survival and identifying biliary leaks.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Glomerular filtration rate obtained by using Tc-99m DTPA was compared with that obtained from Schwartz's formula using serum creatinine and length in 21 infants (age range, 3 to 348 days). The GFR (mean ± SD) obtained by Tc-99m DTPA was 76 ± 37 ml/min per 1.73m2and by the Schwartz formula was 83 ± 49 ml/min per 1.73m2. GFR by Tc-99m DTPA method overestimated GFR by 3.6% compared to the Schwartz method. The imaging technique and the advantages are discussed.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The authors describe the nonvisualization of a renal transplant on DTPA scan with late visualization of activity within the bladder in a 27-year-old patient with diabetes. Origin of bladder activity was later clarified by dynamic anterior and posterior imaging using MAG 3 and an extra large field-of-view, dual-headed gamma camera.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The authors describe the radiographic-scintigraphic features of an unusual craniotubular dysplasia characterized by diffuse osteopenia with bone expansion and a “ground glass” appearance, markedly increased skeletal turnover, myelofibrosis, hypophosphatemia, and pigmented “coast-of-Maine” patches. This syndrome, termed panostotic fibrous dysplasia, is distinct from previously reported disorders.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Melorheostosis is a benign sclerosing bone dysplasia with a very unusual and characteristic roentgenographic appearance. Its scintigraphic appearance also is characteristic, with asymmetric cortical activity that may cross joints to involve contiguous bones. The authors report the appearance of melorheostosis on angiogram and blood pool phases of three-phase bone scintigraphy.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Twenty patients with known primary untreated and recurrent bone and soft tissue tumors underwent thallium imaging and three-phase bone imaging in the same session. The ratio of thallium uptake in the tumor tissue to the contralateral normal tissue areas was compared with the same ratio for phase 1 (blood flow or arterial phase), phase 2 (blood pool), and phase 3 (delayed medroxydiphosphonate, MDP, uptake). There was poor correlation between TI uptake and phases 1 and 3 of the bone scan ratios; r = 0.37 and 0.46; P = 0.097 and 0.047, respectively. The thallium uptake ratios correlated well with blood pool ratios (phase 2) (r = 0.84 and P < 0.01). In contrast to uptake into normal muscle, TI-201 uptake into tumor is not highly dependent on blood flow alone and other factors predominate in determining its magnitude

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

A 27-year-old woman was diagnosed with a pituitary prolactinoma. Seven years later, when she was 34, an abdominal mass was incidentally discovered and ascribed to the right adrenal gland on the basis of evidence from ultrasonography, computed tomography, and arteriography. Adrenal scintigraphy with Se-75 selenomethylcholesterol imaged both adrenal glands, but the right gland was distorted, suggesting external compression. 1-131 MIBG was not taken up by the mass. At surgery, an extra-adrenal ganglioneuroma was found and excised. This case represents an overlap between multiple endocrine neoplasia types 1 and 2. The failure of the ganglioneuroma to concentrate MIBG was likely caused by secretory inactivity of a biologically mature tumor.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

Struma ovarii is an ovarian germ cell tumor consisting mainly of thyroid tissue. Five percent of struma ovarii are malignant, and of these only five percent metastasize. The rarity of this disease has resulted in difficulty in agreeing on treatment regimes and in limited imaging experience. The authors report two cases and highlight the imaging and monitoring difficulties encountered in their management. The authors conclude that I-131 has a role to play both therapeutically and in monitoring these patients, but that biochemical testing is a more reliable indicator of disease status.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID

摘要:

The authors report a patient with diffuse pyogenic pericarditis and focal myoendocarditis initially detected using ln-111 WBC scintigraphy. The patient was in septic shock after hemodialysis for the treatment of chronic renal failure. This was preceded by clinical signs and symptoms of pericarditis thought to be viral in nature. Initial investigations found no septic focus, and the patient was referred for ln-111 WBC scintigraphy. This revealed a striking "halo" of increased activity around the heart, strongly suggesting bacterial pericarditis. A subsequent pericardiocentesis yielded 400 ml of purulet material, confirming the diagnosis.

ISSN:0363-9762    

出版商:OVID    

年代:1992

数据来源: OVID