Novel SPECT System Designs
There are several special SPECT systems designs that do not fit into the preceding two general categories. The commercially available CERESPECT (formerly known as ASPECT) is a dedicated brain SPECT…
Camera-Based SPECT Systems
The most popular SPECT systems are based on single or multiple scintillation cameras mounted on a rotating gantry. The successful design was developed almost simultaneously by three separate groups .…
Multidetector SPECT System
The first fully functional SPECT imaging acquisition system was designed and constructed by Kuhl and Edwards in the 1960s, well before the conception of x-ray CT. As shown in Figure…
SPECT Instrumentation
A typical SPECT system consists of a single or multiple units of radiation detectors arranged in a specific geometric configuration and a mechanism for moving the radiation detector(s) or specially…
Physical and Instrumentation Factors that Affect SPECT Images
There are several important physical and instrumentation factors that affect the measured data and subsequently the SPECT images. As described earlier, gamma-ray photons that emit from an internal source may…
The SPECT Imaging Process
The imaging process of SPECT can be simply depicted as in Figure 13.6. Gamma-ray photons emitted from the internal distributed radiopharmaceutical penetrate through the patient’s body and are detected by…
Basic Principles of SPECT
Single-photon emission computed tomography (SPECT) is a medical imaging technique that is based on the conventional nuclear medicine imaging technique and tomographic reconstruction methods. FIGURE 13.6 The conventional nuclear medicine…
SPECT (Single-Photon Emission Computed Tomography)
During the last three decades, there has been much excitement in the development of diagnostic radiology. The development is fueled by inventions and advances made in a number of exciting…
Defining Terms
Energy resolution: Full width at half maximum of graph of detected counts vs. energy, expressed as a percentage of the energy. Poisson statistics: Expresses probability in situations of equal probability for an…
Place of Planar Imaging in Nuclear Medicine Today: Applications and Economics
There are various ways of thinking about diagnostic imaging and nuclear medicine. If the reason for imaging the patient is to determine the presence of disease, then there are at…
