The technique for lymphatic system evaluation by imaging with technetium-99m "minicolloid" is presented. Results from studies which compared the smaller particle radiocolloid with the commercially available radiopharmaceutical of the larger colloid particle size demonstrated the former to be a far superior agent for imaging the lymphatic system. This appears to be due to its more favorable migr...

Technetium-99m sulfur colloid ( mTc-SC) has been useful in reticuloendothelial imaging, and in particular in liver/spleen and more recently bone marrow scintigraphy. Technetium99m SC can also be employed to localize acute gastrointestinal bleeding and has been used in lung ventilation studies. The standard radiolabeling method requires a heating period in a boiling water bath. A comparison of a...

Triple density gradients of metrizamide in plasma (MP) were used to characterize label distribution in human leukocyte preparations incubated with 99mTc tin colloids. Less than 50% of the cell-associated radioactivity was specifically bound to leukocytes when heparinized blood was rotated with stannous fluoride colloid ([Tc]SFC). Labeling efficiency in leukocyte rich plasma (LRP) averaged 44%, ...

Abstract Non-invasive brain stimulation (NIBS) interventions are promising for the treatment of psychiatry disorders. Notwithstanding, mechanisms action NIBS over dorsolateral prefrontal cortex (DLPFC), a hub that modulates affective and cognitive processes, have not been completely mapped. We aimed to investigate regional cerebral blood flow (rCBF) changes DLPFC interconnected subgenual anteri...

Background: proper assessment of patients with ischemic cardiomyopathy is a key determinant for management other investigations, improving the patient’s quality life and reducing future cardiac events. This study was conducted to evaluate value myocardial MIBI washout rate using delayed resting perfusion imaging in limited resources countries. Patients Methods: this prospective included 86 (64 ...

Particulate air pollution is associated with respiratory and cardiovascular morbidity and mortality. Recent studies investigated whether and to which extent inhaled ultrafine particles are able to translocate into the bloodstream in humans. However, their conclusions were conflicting. We developed a physiologically based kinetic model for (99m)technetium-labelled carbon nanoparticles (Technegas...