Clinical nuclear medicine
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Clinical nuclear medicine · May 1992
Case ReportsDifferential diagnosis of idiopathic fibrosis from malignant lymphadenopathy with PET and F-18 fluorodeoxyglucose.
Idiopathic fibrosis and malignant lymphoma were studied with positron emission tomography (PET) using 2-deoxy-2-[F-18]fluoro-D-glucose (F-18DG). Cases of retroperitoneal fibrosis and sclerosing peritonitis showed low F-18DG uptake with the mass/muscle radioactivity (M/M) ratio 2.0 and 1.9, respectively. A case of para-aortic adenopathy from malignant lymphoma showed high F-18DG uptake with the M/M ratio 9.4. F-18DG PET study may be useful for the differential diagnosis of idiopathic fibrosis and malignant lymphadenopathy.
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Clinical nuclear medicine · May 1990
Case ReportsIdiopathic pulmonary fibrosis. A rare cause of scintigraphic ventilation-perfusion mismatch.
A case of idiopathic pulmonary fibrosis with multiple areas of mismatch on ventilation-perfusion lung imaging in the absence of pulmonary embolism is presented. Idiopathic pulmonary fibrosis is one of the few nonembolic diseases producing a pulmonary ventilation-perfusion mismatch. ⋯ Thus, when examining patients with idiopathic pulmonary fibrosis, one should be aware that abnormal perfusion imaging patterns without matching ventilation abnormalities are not always due to embolism. In this setting, contrast pulmonary angiography is often needed for accurate differential diagnosis.
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Clinical nuclear medicine · Nov 1989
Case ReportsPatent ductus arteriosus with Eisenmenger's syndrome detected by first-pass study.
The case of a 20-year-old man with patent ductus arteriosus complicated with Eisenmenger's syndrome is described. Radionuclide angiocardiography characterized the abnormal pattern of blood flow through the central circulation to establish a diagnosis of patent ductus arteriosus with a significant right-to-left shunt, which had not been indicated by other clinical findings.
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Clinical nuclear medicine · Nov 1989
Case ReportsRapid resolution of pulmonary embolism by tissue plasminogen activator.
A case of multiple bilateral pulmonary emboli demonstrating complete resolution 48 hours after the intravenous administration of tissue plasminogen activator is presented.
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Clinical nuclear medicine · Apr 1989
The radionuclide assessment of a system for slow intrathecal infusion of drugs.
The authors describe a new radionuclide method for assessing the functional integrity of slow intrathecal infusion devices. Approximately 11 mCi (400 MBq) of Tc-99m DTPA is injected into the pump chamber. ⋯ The digitally displayed images are then reviewed by adjustment of the grey scale window. Four patients have had eight studies and in each case the result has been confirmed by surgical exploration or by clinical response to change in therapy.