A case of intestinal bleeding caused by multiple ulcerations near the terminal ileum is presented. Abdominal scanning with Tc-99m tagged red blood cells (Tc-99m RBC) demonstrated the intermittent bleeding in short intervals. Selective angiography did not demonstrate the bleeding site. Exploratory laparotomy showed 3 ulcers on the ileum at a site near the terminal ileum, with bleeding from one s...

tc-99m-ec is a new renal radiopharmaceutical introduced as an alternative for tc-99m mag3. twenty-three normal volunteers and patients in different .stages of renal disease were evaluated with te-99m ec and tc-99m dtpa. the mean initial uptake of ec was significantly higher as compared to dtpa. there was a high correlation between rectangular and hand-drawn rols for kidney and background, 0.96 ...

OBJECTIVE The value of rest technetium-99m (Tc-99m) sestamibi scintigraphy under oral nitrate medication to predict myocardial viability was examined in patients with chronic infarcts. BACKGROUND The value of rest Tc-99m sestamibi to predict viability in infarct regions has not been fully established because significant underestimation of viability, especially in the inferior myocardial wall,...

UNLABELLED Prostate-specific membrane antigen (PSMA) is a well-established target for developing radiopharmaceuticals for imaging and therapy of prostate cancer (PCa). We have recently reported that novel (99m)Tc-labeled small-molecule PSMA inhibitors bind with high affinity to PSMA-positive tumor cells in vitro and localize in PCa xenografts. This study reports the first, to our knowledge, hum...

INTRODUCTION Recently a new somatostatin analogue labelled with (99m)Tc ((99m)Tc-HYNIC-TOC) has been synthetized. Aim of this study was to evaluate the utility of (99m)Tc-HYNIC-TOC in the radionuclide imaging in patients with medullary thyroid carcinoma (MTC). MATERIAL AND METHODS 30 patients with MTC aged 22-83 years in different stages of the disease were investigated. In 6 patients (group ...

UNLABELLED New imaging techniques have been introduced to assess the extent and severity of disease in multiple myeloma (MM) patients. The aim of our study was to compare newer imaging modalities-such as (18)F-FDG PET/CT, (99m)Tc-methoxyisobutylisonitrile ((99m)Tc-MIBI) scintigraphy, and MRI-to assess their relative contribution in the evaluation of MM patients at diagnosis. METHODS Thirty-th...

PURPOSE The purpose of this study was to evaluate whether the degree of technetium-99m methoxyisobutylisonitrile (MIBI) uptake and its retention in delayed imaging in small cell lung cancer (SCLC) was correlated with the response to multiagent chemotherapy and to investigate if there was a relationship between the survival time of patients with SCLC and Tc-99m MIBI SPECT tumor uptake parameters...

UNLABELLED The cytokine interleukin-8 (IL-8) binds with high affinity to the CXCR1 and CXCR2 receptors on neutrophils. In previous studies, we showed that (99m)Tc-IL-8 could rapidly and effectively delineate foci of infection and inflammation in rabbit models of intramuscular infection, colitis, and osteomyelitis. Here, the in vivo kinetics and pharmacodynamics of (99m)Tc-IL-8 are studied in de...

UNLABELLED We conducted a study on humans to determine whether quantitative evaluation of blood-brain barrier (BBB) breakdown using the (99m)Tc-diethylenetriaminepentaacetic acid ((99m)Tc-DTPA) SPECT technique at the peak time of stroke evolution can predict neurologic outcome. METHODS Thirty consecutive patients with acute stroke of the middle cerebral artery occurring >24 h and <48 h before...

UNLABELLED Multidrug resistance (MDR) is a major problem in lung cancer. (99m)Tc-methoxyisobutylisonitrile ((99m)Tc-MIBI) has been demonstrated to be a noninvasive marker for the diagnosis of MDR-related P glycoprotein and MDR-associated protein expression in various solid tumors. Studies have shown that (99m)Tc-MIBI could play a significant role in the management of lung cancer; for example, i...