INTRODUCTION The study was aimed at assessing the reliability of 18F-fluorodeoxyglucose positron emission tomography-computed tomography scan in evaluation of testicular carcinoma patients. MATERIAL AND METHODS The study sample consisted of 26 scans performed in 23 patients with testicular carcinoma. According to the pathohistological finding, 14 patients had seminomas, 7 had nonseminomas and...

BACKGROUND Hemodynamically significant coronary artery disease is an important indication for revascularization. Stress myocardial perfusion imaging is a noninvasive alternative to invasive fractional flow reserve for evaluating hemodynamically significant coronary artery disease. The aim was to determine the diagnostic accuracy of myocardial perfusion imaging by single-photon emission computed...

Various imaging modalities are available to study the heart, including ultrasound, single photon emission computed tomography, positron emission tomography, computed tomography, and magnetic resonance imaging [1–4]. These modalities are fundamentally different and, consequently, different information is deduced from the images they generate. This paper describes briefly the physical principles ...

Over the past decade, quantitation of cardiac single-photon emission computed tomography (SPECT) data, once limited to perfusion assessment, has been extended to global and regional function assessment for both the left and the right ventricle, as well as to measurement of additional cardiac parameters of diagnostic and prognostic interest. A number of commercially available quantitative algori...

Single photon emission computed tomography (SPECT) is the state-of-the-art imaging modality in nuclear medicine despite the fact that only a few new SPECT tracers have become available in the past 20 years. Critical for the future success of SPECT is the design of new and specific tracers for the detection, localization, and staging of a disease and for monitoring therapy. The utility of SPECT ...

Over the last years many statistical models have been proposed to restore tomographical images. However, their use in medical environment has been limited due to several factors. These factors include the need of greater computational time than deterministic methods and the selection of the hyperparameters of in a given image model. Consequently, deterministic methods, like filtered back-projec...