Experimental MRI-SPECT insert system with Hybrid Semiconductor detectors Timepix for MR animal scanner Bruker 47/20

0471636 - ÚTAM 2018 RIV GB eng J - Článek v odborném periodiku
Zajíček, J. - Burian, M. - Soukup, P. - Novák, Vladimír - Macko, M. - Jakůbek, J.
Experimental MRI-SPECT insert system with Hybrid Semiconductor detectors Timepix for MR animal scanner Bruker 47/20.
Journal of Instrumentation. Roč. 12, January (2017), č. článku P01015. ISSN 1748-0221. E-ISSN 1748-0221
Institucionální podpora: RVO:68378297
Klíčová slova: Gamma camera * SPECT * PET PET/CT * coronary CT angiography (CTA) * Gamma detectors (scintillators, CZT, HPG, HgI etc) * multi-modality systems * pixelated detectors and associated VLSI electronics
Obor OECD: Electrical and electronic engineering
Impakt faktor: 1.258, rok: 2017
http://iopscience.iop.org/article/10.1088/1748-0221/12/01/P01015

Multimodal medical imaging based on Magnetic Resonance is mainly combinated with one of the scintigraphic method like PET or SPECT. These methods provide functional information whereas magnetic resonance imaging provides high spatial resolution of anatomical information or complementary functional information. Fusion of imaging modalities allows researchers to obtain
complimentary information in a single measurement. The combination of MRI with SPECT is still relatively new and challenging in many ways. The main complication of using SPECT in MRI systems is the presence of a high magnetic field therefore (ferro) magnetic materials have to be eliminated. Furthermore the application of radiofrequency fields within the MR gantry does not allow for the use of conductive structures such as the common heavy metal collimators. This work presents design and construction of an experimental MRI-SPECT insert system and its initial tests. This unique insert system consists of an MR-compatible SPECT setup with CdTe pixelated sensors Timepix tungsten collimators and a radiofrequency coil. Measurements were performed on a gelatine and tissue phantom with an embedded radioisotopic source (Co-57 122 keV gamma ray) inside the RF coil by the Bruker BioSpec 47/20 (4.7 T) MR animal scanner. The project was performed in the framework of the Medipix Collaboration.
Trvalý link: http://hdl.handle.net/11104/0269034