DocumentCode :
3337264
Title :
A SPECT camera for simultaneous SPECT/MRI
Author :
Meier, Dirk ; Wagenaar, Douglas J. ; Mahlum, G. ; Sundal, Bjørn ; Patt, Bradley E. ; Chen, Si ; Xu, Jingyan ; Yu, Jianhua ; Tsui, Benjamin M W ; Hamamura, Mark ; Roeck, Werner W. ; Ha, Seung-Hoon ; Nalcioglu, Orhan
fYear :
2009
fDate :
Oct. 24 2009-Nov. 1 2009
Firstpage :
2313
Lastpage :
2318
Abstract :
We describe a single photon emission computed tomograph (SPECT) which can be operated inside state-of-the-art magnetic resonance imaging (MRI) systems. The combined SPECT/MRI system allows one to acquire simultaneously the data from both modalities and co-register the images in space and time. The new SPECT is based on the semiconductor cadmium zinc telluride (CZT) and application specific integrated circuits (ASICs) - two technologies which are MR-compatible and almost insensitive to magnetic fields. The SPECT camera has an energy resolution of 5.4 keV full-width-half-maximum (FWHM) at the 140-keV photo peak from 99mTc for either inside or outside of the MRI. We acquired the first SPECT and MR images from resolution phantoms and mice in-vivo. The experiments show that the MRI is minimally affected by the SPECT camera inside the bore. Preliminary results for the SPECT camera show high sensitivity of about 1.6% and a spatial resolution of 4 mm FWHM.
Keywords :
biomedical MRI; phantoms; semiconductor counters; single photon emission computed tomography; 99mTc; MR images; SPECT camera; application specific integrated circuits; dynamic imaging; energy resolution; magnetic fields; magnetic resonance imaging systems; mice; molecular imaging; multi-modality imaging; phantoms; semiconductor cadmium zinc telluride; single photon emission computed tomograph; Application specific integrated circuits; Cadmium compounds; Cameras; Energy resolution; Magnetic resonance imaging; Optical computing; Single photon emission computed tomography; Space technology; Spatial resolution; Zinc compounds; CZT; MRI; SPECT; dynamic imaging; molecular imaging; multi-modality imaging;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
ISSN :
1095-7863
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2009.5402269
Filename :
5402269
Link To Document :
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