Detection of scattered gamma quanta degrades image contrast and quantitative accuracy of
single-photon emission computed tomography (SPECT) imaging. This paper reviews …

In nuclear medicine, clinical assessment and diagnosis are generally based on qualitative
assessment of the distribution pattern of radiotracers used. In addition, emission tomography …

3D PET emission data acquired without interplane septa contain a component of scattered
radiation which may exceed 30% for brain scans and 50% for chest studies. In order to …

As photon-counting imaging systems become more complex, there is a trend toward
measuring more attributes of each individual event. In various imaging systems the attributes …

Thisartideis a reviewof the physicsprinciples, instrumentation and reconstructionmethods
behind SPECT imaging. Particular attention is paid to the mechanisms that can …

Abstract 3D acquisition and reconstruction in positron emission tomography (PET) produce
data with improved signal-to-noise ratios compared with conventional 2D slice-oriented …

A Bayesian method is presented for simultaneously segmenting and reconstructing
emission computed tomography (ECT) images and for incorporating high-resolution …

Over the last century, medicine has come out of the" black bag" and emerged as one of the
most dynamic and advanced fields of development in science and technology. Today …

Silica aerogels, prepared by the sol–gel method and dried by the CO2 supercritical method,
were produced from tetramethoxysilane (TMOS) and methyltrimethoxysilane (MTMS) in …

Quantitative imaging of the human thorax poses one of the most difficult challenges for three-
dimensional (3-D)(septaless) positron emission tomography (PET), due to the strong …