Radionuclide imaging employs radiolabelled tracers in the investigation of suspected cancer, subsequent staging, response assessment and the assessment of recurrence. Highly specific tracers, that target cellular receptors and metabolic pathways, are used in investigating patients with known or suspected cancers. Radionuclide imaging techniques have superior sensitivity compared to anatomic tec...

Cardiac nuclear medicine refers to three techniques: 1. Radionuclide ventriculography (RNV, also known as MUGA) 2. Myocardial perfusion scintigraphy (MPS) 3. Positron emission tomography (PET) Radionuclide ventriculography has been largely superseded by echocardiography. Occasionally it is helpful in determining ventricular function when echocardiographic views are limited and there is a contra...

Two cases of urinary extravasation with ureteral obstruction demonstrated by the radionuclide studies are reported. The value of radionuclide studies in patients with renal transplantation has been reported previously, but studies in patients without transplantation have rarely been described in the literature. Ureteral obstruction may cause urinary extravasation, which may be demonstrated by r...

BACKGROUND Although magnetic resonance first-pass imaging (MRFP) has potential advantages in pharmacological stress perfusion imaging, direct comparisons of current MRFP and established radionuclide techniques are not available. METHODS AND RESULTS Graded regional differences in coronary flow were produced during global coronary vasodilation in chronically instrumented dogs by partially occlu...

Tantalum-178 is a short-liver radionuclide (T 1/2 = 9.3 min.) and emits primarily 56- to 64-keV characteristic x-rays. We have determined the imaging characteristics with this radionuclide and a large-field-of-view Anger camera. With a pinhole collimator, good spatial resolution is possible with Ta-178, although the image quality is superior with Tc-99m under comparable conditions. Spatial reso...

A series of experiments was undertaken to evaluate the response of a positron emission transverse tomograph (PETT) to measured radionuclide concentrations similar to those encountered in human studies. The correlation between the response of the imaging system (mean PETT number/min), and the concentration of the radioactivity producing the output data, was linear with a computed sensitivity of ...

Transmission scanning-based estimation of the attenuation map plays a crucial role in quantitative radionuclide imaging. X-ray computed tomography (CT) reconstructs directly the attenuation coefficients map from data transmitted through the object. This paper proposes an alternative route for reconstructing the object attenuation map by exploiting Compton scatter of transmitted radiation from a...

Nuclear medicine techniques have received little attention in the practice of emergency medicine, yet radionuclide imaging can provide valuable and unique information in the management of acutely ill patients. In this review, emphasis is placed on the role of these techniques in patients with bone injuries, non-traumatic bone pain and in those with pleuritic chest pain. New developments such as...

The recent expansion of interventional cardiovascular techniques has stimulated the development of non-invasive cardiac studies, to evaluate the outcome of the interventional therapy. Radionuclide ventriculographic technique provides to quantify global left ventricular systolic/diastolic performance, and evaluate the regional left ventricular wall motion during rest or exercise. This concept wa...