A 42 year old man, was admitted to emergency service who suffered from nausea and vomitting for two days. In his physical examination the right side abdomen was severe distended, that had been lasting for a month. Distension was tender and cystic tough mass lesion was palbable. Plain abdominal radiography showed a 3 cm radiopaque shadow in the pelvic area. Ct scan revealed massive gastric dilat...

UNLABELLED To develop a (99m)Tc renal tracer with a capacity to measure effective renal plasma flow comparable to that of the clinical gold standard (131)I-o-iodohippurate ((131)I-OIH) and superior to that of (99m)TcO-mercaptoacetyltriglycine, which has a clearance only 50%-60% that of (131)I-OIH, we investigated (99m)Tc-tricarbonyl nitrilotriacetic acid (Na(2)[(99m)Tc(CO)(3)(NTA)]). This radio...

PURPOSE Targeted radiotherapy using Auger electrons presents multiple advantages and challenges. The advantageous characteristics of this type of radiotherapy can explain the growing interest in these specific electrons for cancer therapy. During the last decade, Technetium-99m ((99m)Tc) has been used as an imaging agent and only recently has it been analysed as a potential therapeutic agent. T...

PURPOSE To determine if there was any difference in the ability of physicians to predict prognosis with technetium 99m ((99m)Tc) sestamibi or (99m)Tc tetrofosmin in a large consecutive series of patients at high risk for coronary artery disease who underwent coronary angiography. MATERIALS AND METHODS This study included 1,818 consecutive patients who underwent a rest and stress single photon...

OBJECTIVE This study objective was to evaluate interobserver agreement between individual pairs of three nuclear medicine physicians in interpretation of renal cortical scintigraphy in children with respect to the mode of acquisition (planar vs. SPECT), diagnoses and kidney site (left vs. right). MATERIALS AND METHODS Thirty children were imaged in planar and SPECT mode per protocol upon the ...

BACKGROUND In 2009, the Chalk River nuclear reactor closed for repairs that led to a critical shortage of technetium-99m (Tc-99m). Several centers used thallium-201 (Tl-201) as an alternative radiotracer for myocardial perfusion imaging. Because Tl-201 is considered by many as a suboptimal radiotracer, we sought to understand the impact of using Tl-201 (during the Tc-99m shortage) on downstream...

OBJECTIVE To evaluate the potential of technetium-99m methoxyisobutylisonitrile (Tc-99m MIBI) imaging as an alternative to I-131 total-body scan (I-131 TBS) for the follow-up of patients with differentiated thyroid carcinoma (DTC). PATIENTS AND METHODS We performed 87 Tc-99m MIBI imaging studies in 76 DTC patients who had total or near-total thyroidectomy followed by a radioactive iodine abla...

UNLABELLED The aim of this study was to compare the imaging abilities of the recently developed somatostatin analog, (99m)Tc-hydrazinonicotinyl-Tyr(3)-octreotide ((99m)Tc-HYNIC-TOC [(99m)Tc-TOC]), with (111)In-diethylenediaminepentaacetic acid-D-Phe(1)-octreotide ((111)In-OCT [Octreoscan]) in patients undergoing routine somatostatin receptor (SSTR) scintigraphy. METHODS Forty-one patients (20...

⁹⁰Y PET/CT can be acquired after ⁹⁰Y-microsphere selective radiation internal therapy (SIRT) to describe radioactivity distribution. We performed dosimetry using ⁹⁰Y-microsphere PET/CT data to evaluate treatment efficacy and appropriateness of activity planning from (99m)Tc-MAA scan and SPECT/CT. Twenty-three patients with liver malignancy were included in the study. (99m)Tc-MAA was injected du...