TY  - BOOK
ED  - Iványi, Antal
TI  - Informatikai algoritmusok. 2. kötet. Párhuzamos módszerek és optimalizáció
PB  - Hountler Kft.
CY  - Budapest
PY  - 2015
SP  - 810
UR  - https://m2.mtmt.hu/api/publication/2841393
ID  - 2841393
N1  - Bővített és javított második kiadás.
LA  - Hungarian
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Jakab, Gábor
AU  - Szirmay-Kalos, László
TI  - Hybrid Monte Carlo CT Simulation on GPU
JF  - LECTURE NOTES IN COMPUTER SCIENCE
J2  - LNCS
VL  - 8353
PY  - 2014
SP  - 161
EP  - 169
PG  - 9
SN  - 0302-9743
DO  - 10.1007/978-3-662-43880-0_17
UR  - https://m2.mtmt.hu/api/publication/2696069
ID  - 2696069
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Nagy, Kálmán
AU  - Toth, M
AU  - Major, P
AU  - Patay, G
AU  - Egri, G
AU  - Haggkvist, J
AU  - Varrone, A
AU  - Farde, L
AU  - Halldin, C
AU  - Gulyas, B
TI  - Performance evaluation of the small-animal nanoScan PET/MRI system.
JF  - JOURNAL OF NUCLEAR MEDICINE
J2  - J NUCL MED
VL  - 54
PY  - 2013
IS  - 10
SP  - 1825
EP  - 1832
PG  - 8
SN  - 0161-5505
DO  - 10.2967/jnumed.112.119065
UR  - https://m2.mtmt.hu/api/publication/2727805
ID  - 2727805
N1  - Psychiatry Section, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden            
            Mediso Ltd., Budapest, Hungary            
            Cited By :75            
            Export Date: 14 July 2021            
            CODEN: JNMEA            
            Correspondence Address: Nagy, K.; Karolinska University Hospital, Solna, R5:02, SE-171 76 Stockholm, Sweden; email: kalmanagy@gmail.com            
            Tradenames: nanoScan PET/MRI system, Mediso; NanoX/CT, Mediso            
            Manufacturers: Mediso
AB  - nanoScan is a high-resolution integrated system for consecutive PET and MR imaging of small laboratory animals. We evaluated the performance of the system, using the NEMA NU 4-2008 protocol for the PET component and the NEMA MS 1-2007, MS 2-2008, and MS 3-2007 standards for the MR imaging component. METHODS: The imaging system uses magnetically shielded position-sensitive photomultiplier tubes and a compact 1-T permanent-magnet MR imaging platform. Spatial resolution, sensitivity, counting rate capabilities, and image quality parameters were evaluated in accordance with the aforementioned NEMA standards. Further in vivo evaluation experiments complement the physical validation results. RESULTS: The spatial resolution of the PET system enabled the 0.8-mm rods of a Derenzo phantom to be resolved. With point source and 2-dimensional filtered backprojection reconstruction, the resolution varied from 1.50 to 2.01 mm in full width at half maximum in the radial direction and from 1.32 to 1.65 mm in the tangential direction within the radius of 25 mm. Peak absolute sensitivity was 8.41%. Scatter fraction was 17.3% and 34.0%, and maximum noise-equivalent counting rate was 406 and 119 kcps in the mouselike and ratlike phantom, respectively. The image quality test found a nonuniformity of 3.52% and a spillover ratio of 6.2% and 5.8% in water and air, respectively. In testing of the MR imaging component, artifact-free images with high signal-to-noise ratio were recorded. Geometric distortion was below 5%, and image uniformity was at least 94.5% and 96.6% for the 60- and 35-mm radiofrequency coils, respectively. CONCLUSION: The nanoScan integrated small-animal PET/MR imaging system has excellent spatial resolution and sensitivity. The performance characteristics of the PET and the MR imaging components are not compromised as a result of their integration onto a single platform. Because of its combination of features and performance parameters, the system provides crucial advantages for preclinical imaging studies over existing PET/CT systems, especially in neurologic and oncologic research.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Magdics, Milán
AU  - Szirmay-Kalos, László
AU  - Tóth, Balázs György
AU  - Umenhoffer, Tamás
ED  - Bo, Yu
TI  - Filtered Sampling for PET
T2  - 2012 IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE RECORD (NSS/MIC)
PB  - IEEE
CY  - Anaheim (CA)
SN  - 1467320293
T3  - IEEE Nuclear Science Symposium Conference Record, ISSN 1082-3654
PY  - 2012
SP  - 2509
EP  - 2514
PG  - 6
DO  - 10.1109/NSSMIC.2012.6551572
UR  - https://m2.mtmt.hu/api/publication/2687750
ID  - 2687750
N1  - Language of Original Document: English

LA  - English
DB  - MTMT
ER  -