The parameters of SPECT tomography scanners based on the standard vacuum PM’s, which are used in human body diagnostics systems with gamma-radionuclide methods, have almost reached their technological limits. Further development of SPECT scanners is only possible in the case where SiPM’s are employed as a detection element. Such a replacement provides better spatial resolution and, therefore, more accurate localization of pathological objects. It also allows a decrease in the required human body radiation dose, as well as a simplification in device maintenance. With such improvements, it is possible to build a mobile tomography scanner device. This also provides an opportunity to build a scanner with a more flexible configuration, allowing detectors in direct proximity to the scanned part of body, thereby decreasing radiation dose and improving spatial resolution. Mobile scanners can be also used for screening bed patients. An additional opportunity appears for combining the gamma tomography scanner with magnet-resonance tomography scanner (MRT) technology, improving significantly the ability and quality of the medical diagnostics. Such a combination permits simultaneously drawing data about both human anatomic and functional behaviors.
Within the proposed project the SPECT prototype must be built on the basis of the SiPM matrix in collaboration with “Indicom” Limited, which has unique experience (in Russia) in the design and construction of detection blocks and data acquisition systems for SPECT scanners using standard vacuum PM’s. This experience was gained during the design and construction of the trial SPECT prototype “EFATOM”.