摘要:

Gadolinium-enhanced MRI is considered the study of choice for diagnosing spinal epidural abscess (SEA). Most of such cases, however, are not suspected initially, and thus do not benefit from the procedure. A case of SEA is described in which positive Ga-67 scintigraphy shortly before onset of lower extremity dysfunction was instrumental in obtaining an emergency gadolinium-enhanced MRI and establishing the diagnosis.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

A woman, 6 months postpartum and nursing her child, had a Ga-67 scintigram. A sample of breast milk obtained at day 2 revealed 2.8% of the injected dose (ID) per liter. The percent ID/L was compared with literature values; the highest concentration was in a report of galactorrhea. Similarity of the gallate ion to phosphate, as a possible explanation for accumulation in the breast, was pointed out. An earlier recommendation that a patient given Ga-67 citrate should discontinue breast feeding for at least 2 weeks was re-examined.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

In a patient with symptoms of pulmonary disease and a mediastinal mass, the authors describe how gated blood pool imaging helped diagnose a pseudoaneurysm of the left ventricle, a potentially lethal condition.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Serial bone scanning was performed on a 23-year-old man with type 1 primary hyperoxaluria, renal failure, oxalosis, and cardiac failure. The initial bone scan (6/22/90) demonstrated diffuse increased uptake in the axial and peripheral skeleton, heart, and the soft tissues of the lower extremities. A combined liver and kidney transplant was successfully performed with subsequent resolution of the oxalosis, renal failure, and cardiac failure. A follow-up bone scan (9/24/90) demonstrated resolution of abnormal heart and soft tissue uptake, as well as decreased uptake in the long bones. This case demonstrates that bone scanning may be a useful tool in the management of patients with oxalosis. The scintigraphic findings closely paralleled the clinical response to treatment of the disease and suggested decreased total body stores of calcium oxalate.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

The authors report the casual discovery in 1991 of a metastasis during Tc-99m MDP imaging of a 57-year-old woman who underwent surgery in 1983 for cutaneous melanoma on the right calf. The scan did not show bone alterations but did reveal an area of hyperactive uptake in the soft tissue of the medial surface of the thigh, where slightly altered pigmentation was also apparent. A subsequent immunoscan with Tc-99m-F(ab')2 225.28S confirmed increased uptake at this site. The lesion was removed and was histologically diagnosed as a skin metastasis from melanoma. Inguinal adenopathy appeared 6 months later. The uptake of Tc-99m MDP by both primary and metastased tumors has been described, although this may be the first report concerning melanoma. The uptake mechanism is not known.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Metastatic papillary carcinoma was diagnosed in a 42-year-old woman. The cancer had invaded out of the gland and was present in many lymph nodes. After her surgical procedure, she was advised to have radioiodine. However, the patient had total renal failure and was on dialysis. Studies were carried out using a tracer dose of 2 mCi of radioiodine, demonstrating that approximately 60% of the radioactivity in the body was removed with each dialysis. Calculations indicated that a meaningful dose of radiation could be delivered to residual thyroid and metastases with 100 mCi of radiolodine and the total body radiation would be

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Tc-99m DMSA renal scintigraphy was performed in 40 renal grafts. Cyclosporin A and glucocorticoids were given to all patients as antirejection therapy, and 11 also were given azathioprine. The kidneys were transplanted 1 to 97 months before the investigation. Seventy percent of kidneys had diffusely altered distribution of Tc-99m DMSA, and 43% had focal clear-cut parenchymal defects. The frequency of parenchymal defects observed on the DMSA scans was higher in patients who suffered manifest acute rejection episodes (8/16 versus 9/24 patients, borderline significance, P < 0.06), but had no relation to the living or cadaveric donor transplant or its function. A combination of peritubular edema and interstitial fibrosis is considered the most probable explanation of diffuse changes. The high frequency of clear-cut parenchymal defects most likely results from symptomatic or asymptomatic rejection episodes complicated by renal transplant infarcts.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Brain SPECT of regional cerebral blood flow using I-123 IMP demonstrated a focally decreased perfusion area immediately adjacent to a venous angioma in a patient with simple partial seizures. A positive correlation was obtained among the location of the venous angloma, the decreased perfusion area on SPECT images, and the electroencephalographic focus. Anomalous venous drainage through a venous angloma may explain a perfusion disturbance in the surrounding brain of the angioma. High-resolution SPECT imaging with magnetic resonance guidance provides useful information on the pathophysiology of venous angiomas.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

Stringent quality control cannot be overemphasized in performing SPECT. SPECT artifacts related to camera uniformity, center of rotation, and the patient's motion are well recognized. In this communication, another rare cause of a SPECT artifact related to a triad system is reported. A triple-headed SPECT system was accidentally equipped with two ultrahigh-resolution collimators and a general all-purpose collimator during a brain SPECT study, causing a false cerebral blood flow defect.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID

摘要:

The particular use of lymphoscintigraphy to document retention and drainage in cystic lymphangioma of the neck is reported. Radionuclide examination using Tc-99m colliod particles, performed before sclerosing treatment with tetracycline in a patient with a large lymphangioma located in the neck, demonstrated a satisfactory tumor retention and slow outflow, enabling the administration of tetracycline without (risk of) organ toxicity. The treatment was successfully performed.

ISSN:0363-9762    

出版商:OVID    

年代:1994

数据来源: OVID