ÚTEF - Ústav technické a experimentální fyziky ČVUT - České vysoké učení technické v Praze
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ÚTEF - Ústav technické a experimentální fyziky ČVUT - České vysoké učení technické v Praze
ČVUT - České vysoké učení technické v Praze
Publikace  > Články v impaktovaných časopisech  > 'Multimodal imaging with hybrid semiconductor detectors Timepix for an experimental MRI-SPECT system'
Multimodal imaging with hybrid semiconductor detectors Timepix for an experimental MRI-SPECT system

Autor
Zajíček Jiří, Ing. UTEF
Jakůbek Jan, Ing. Ph.D. UTEF
Burian Martin, Mgr. IKEM
Vobecký Miloslav, Ing. CSc. UTEF
Fauler A FMF University of Freiburg
Fiederle M FMF University of Freiburg
Zwerger Andreas, Ing. Freiburger Materialforschungszentrum, Albert-Ludwigs-Universität Freiburg, Germany

Rok
2013

Časopis
Journal of Instrumentation

Web


Obsah
An increasing number of clinical applications are being based on multimodal imaging systems (MIS), including anatomical (CT, MRI) and functional (PET, SPECT) techniques to provide complex information in a single image. CT with one of the scintigraphic methods (PET or SPECT) is nowadays a combination of choice for clinical practice and it is mostly used in cardiography and tumour diagnostics. Combination with MRI is also being implemented as no radiation dose is imparted to the patient and it is possible to gain higher structural resolution of soft tissues (brain imaging). A major disadvantage of such systems is inability to operate scintillators with photomultipliers (used for detection of g rays) in presence of high magnetic fields. In this work we present the application of the semiconductor pixel detector for SPECT method in combination with MR imaging. We propose a novel approach based on MRI compatible setup with CdTe pixel sensor Timepix and non-conductive collimator. Measurements were performed on high proton-density (PD) phantom (1H) with an embedded radioisotopic source inside the shielded RF coil by MRI animal scanner (4.7 T). Our results pave the way for a combined MRI-SPECT system. The project was performed in the framework of the Medipix Collaboration. KEYWORDS: Gamma detectors (scintillators, CZT, HPG, HgI etc); Gamma camera, SPECT, PET PET/CT, coronary CT angiography (CTA); Pixelated detectors and associated VLSI electronics; Hybrid detectors
Granty


Příklad citace článku:
J. Zajíček, J. Jakůbek, M. Burian, M. Vobecký, A. Fauler, M. Fiederle, A. Zwerger, "Multimodal imaging with hybrid semiconductor detectors Timepix for an experimental MRI-SPECT system", Journal of Instrumentation (2013)

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