tc-99m-mibi is an isonrtrile derivative used for evaluation of myocardial perfusion in recent years. in this preliminary report, 7 patients with coronary artery disease are evaluated with tc-99m-mlbl stress planar and sped studies. good correlation with coronary angiography is observed in these cases.in view of inherent technical problems present with thallium 201, tc-99m-mibi is a good alterna...

Fifty-two patients with suspected coronary artery disease underwent coronary angiography, thallium-201 myocardial imaging, and ECG-gated blood pool ventriculography at rest and at maximal exercise. In 11 patients without coronary artery disease, all thallium images were normal. The resting ejection fraction (EF) was normal in all 11 patients and increased during exercise in six, was unchanged i...

Technetium-99m-labeled agents have advantages over thallium-201 in terms of photon statistics, cost and clinical availability. They have been suggested as an alternative to thallium for myocardial perfusion imaging. Teboroxime is a new boronic acid adduct of technetium dioxime (BATO) compound that demonstrates favorable characteristics in preliminary studies. With use of a novel (seated) patien...

  Solitary pulmonary nodule (SPN) is a frequent finding on the chest x-ray and computed tomography. Nuclear medicine techniques play an important role in the diagnosis and management of SPN. In the current review, we briefly will explain the different nuclear medicine modalities in this regard including positron emission tomography (PET) using 18-F-FDG, and 11-C-Methionine, and single photon em...

Microcystic meningiomas are rare but benign brain tumors. Previous reports have shown that Thallium-201 single-photon emission computed tomography ((201)Tl SPECT) demonstrated a higher late-phase accumulation of (201)Tl in malignant or recurrent meningiomas than in nonaggressive meningiomas. No study has reported (201)Tl SPECT findings in microcystic meningiomas. We here describe a case of a mi...

The standardization of Tl, using the 4π(PC)-NaI(Tl) coincidence system, is presented. The disintegration rate was determined by the extrapolation technique, using two methods: electronic discrimination and external absorbers. A Monte Carlo simulation program, developed in our laboratory, which predicts the behavior of the extrapolation curve, was applied and the results were compared with exper...