摘要:

To assess the relative strengths of hepatic SPECT and transmission computed tomography (TCT), a comparison of these methods was made in 88 patients during a 20-month period. The scans were classified into four categories: normal, solitary focal, multifocal, or diffuse hepatocellular patterns. The final disease category was determined by histologic evaluationbiopsy/autopsy, surgery, or a combination of ultrasound, laboratory, and clinical follow-up for a minimum of 6 months. Both SPECT and TCT were normal in the 47 patients classified as normal. Of the 16 patients with diffuse hepatocellular disease, SPECT correctly identified 16 and TCT identified two patients. Eleven patients had solitary focal disease; 11 were detected by SPECT and 10 by TCT. Fourteen patients were in the multifocal disease group; 13 were detected by SPECT and 10 by TCT. Overall, SPECT and TCT findings were in agreement in 68 (77%) of the cases. This study demonstrates that SPECT is equal to TCT in the assessment of the liver parenchyma in normal and focal disease states and that SPECT is superior in the assessment of diffuse disease.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Anterior dynamic imaging of the abdomen was performed in 870 patients using a large field-of-view (LFOV) gamma camera. Sequential images were obtained immediately after the injection of Tc-99m sulfur colloid (Tc-99m SC) in an antecubital vein for liver-spleen imaging and was followed by standard planar images. This provided additional information in 172 cases (20%), including such findings as determination of the lesion's vascularity in 76 (9%), visualization of abnormal portal blood flow in 53 (6%), and detection of abnormalities in the aorta, inferior vena cava, iliac vessels, or kidneys in 43 (5%) of these patients. This procedure is recommended in all patients undergoing liver-spleen imaging.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

A large focus of liver activity was seen after the injection of Tc-99m macroaggregated albumin (MAA) in a pregnant patient thought to have pulmonary embolism (PE). The correct diagnosis of superior vena caval (SVC) obstruction led to an immediate cesarian section, CT of the chest and abdomen, open lung biopsy of a mediastinal mass, and radiation therapy for the lymphoma with pericardial invasion, all within 24 hours of presentation. The next day, an in vitro labeled Tc-99m red blood cell (RBC) angiogram was performed, which documented collateral flow from the SVC obstruction to the abdomen and filling of the right ventricle via the liver, presumably through reopened channels of the umbilical vein.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Focal hot nodules on iodine thyroid images are associated with an exceedingly low incidence of malignancy. Most previously reported hot carcinomas represent the coexistence of small malignancies in or adjacent to a benign hot lesion. Described here is a 3-cm papillary carcinoma that fulfilled the criteria for benignancy on Tc-99m and I-123 imaging. Coincidental carcinoma within a benign lesion was excluded by detailed scintigraphic-pathologic correlation of the tumor. The implications of this case on the management of the solitary hot nodule are discussed and the literature reviewed.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Focal I-131 accumulation is generally a reliable indicator of functioning thyroid tissue or a differentiated thyroid cancer metastasis. Normal accumulation of activity may be seen in areas such as the intestinal tract, liver, and salivary glands. This report describes a patient with significant accumulation of I-131 in the right upper quadrant of the abdomen. The abnormality, first thought to represent metastastic thyroid carcinoma, was subsequently proven to be accumulation within a large renal cyst.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Quantitative Tc-99m pertechnetate thyroid imaging was performed on a hypothyroid neonate. The image revealed markedly increased trapping in an enlarged, bilobed, eutopic gland. A perchlorate washout test using quantitative imaging with I-123 confirmed an organification problem.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

This is the first reported case in which struma cordis was demonstrated with radionuclide imaging. A 56-year-old white woman underwent surgical excision of a benign intracardiac thyroid mass (struma cordis). Subsequent radionuclide imaging with I-123 sodium iodide and Tc-99m labeled red blood cells demonstrated a normal cervical thyroid gland as well as a focus of activity in the mediastinum consistent with intracardiac thyroid.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

The typical appearance of subcutaneous ossification on a single photon emission computed tomography (SPECT) bone image is reminiscent of the patterns discovered by radiographs and computerized tomography. A case demonstrates the advantage of SPECT imaging to clarify the actual location of soft tissue Tc-99m methylene diphosphonate in this condition.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Renal vein thrombosis is a rare complication of renal transplantation. The scintigraphic features of a documented case of renal vein thrombosis studied with Tc-99m DTPA and the differential diagnosis relevant to these findings are discussed.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID

摘要:

Tc-99m MDP three-phase bone imaging demonstrated the acute hyperemic inflammatory soft tissue phase of radiation injury to the hand in a patient receiving radiation therapy to bone lesions of multiple myeloma.

ISSN:0363-9762    

出版商:OVID    

年代:1988

数据来源: OVID