Molecular image-guided therapy has been demonstrated to be effective in improving diagnosis, prognosis, planning , and monitoring of personalized medication. Molecular imaging modalities include positron emission tomogra-phy (PET), single-photon emission-computed tomography (SPECT), magnetic resonance imaging (MRI), computed tomography (CT), ultrasound (US), and optical imaging (Ramen, quantum ...

OBJECTIVE Quantitative analysis of (99m)Tc-pertechnetate salivary gland scintigraphy has been used in the evaluation of salivary gland function, but so far no one method can be considered optimal for this task. In this study, a semiquantitative method providing 2 functional parameters for objective assessment of salivary gland function by scintillation camera imaging was tested. METHODS Twent...

PURPOSE In cases of thyroid toxic autonomous nodule, anterior projection of Tc-99m pertechnetate image shows a hot nodule that occupies most, or the entire thyroid lobe with near-total or total suppression of the contra lateral lobe. In this case is very difficult to distinguish toxic nodule from lobe agenesis. Our interest was to estimate and determinate the rate of radioactivity when the sour...

A 8 month old boy suffering from inconsolable cry and tenderness presented to our hospital. Ten hours had passed from the onset of his symptoms. Physical examination showed a tender mass on the left groin. Patient was evaluated with Doppler ultrasound and Technetium-99m pertechnetate testicular scintigraphy Differential diagnosis of torsion and inflammatory disease could not be made by adjuncti...

Obscure gastrointestinal bleeding is often a diagnostic challenge for the primary care physician, but with improvements in diagnostic testing the cause of such blood loss is determined in most patients. However, in approximately 5% of the cases, the source of bleeding is not identifiable. One common etiology in patients younger than 40 years of age is Meckel’s diverticulum. Technetium-99m perte...

Sheep IgG antibody to carcinoembryonic antigen (CEA) was radiolabelled with 131I and used to identify human gastrointestinal tumours by external subtraction imaging. 99Tc-pertechnetate and 99Tc-human serum albumin were used to identify tissue spaces. In 13 patients with tumours four out of five primary sites and eight out of 11 secondary sites were successfully shown. Two patients with benign d...

In nuclear medicine, the process of labeling of cells and molecules with Technetium-99m almost always requires the use of a reducing agent, since the eluate obtained in the generator as pertechnetate ion is not easily connect to other chemical species. Since the use of products containing stannous chloride is increasingly growing by humans, has become a stimulating attempt to better understand ...