Title :
Results from prototype II of the BNL simultaneous PET-MRI dedicated breast scanner
Author :
Ravindranath, B. ; Junnarkar, S.S. ; Purschke, M.L. ; Maramraju, S.H. ; Hong, X. ; Tomasi, D. ; Bennett, D. ; Cheng, K. ; Southekal, S.S. ; Stoll, S.P. ; Pratte, J.-F. ; Vaska, P. ; Woody, C.L. ; Schlyer, D.J.
Author_Institution :
Stony Brook Univ., Stony Brook, NY, USA
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
At Brookhaven National Laboratory, we are developing a simultaneous PET-MRI breast imaging system. A prototype II version of the PET system has been constructed. This device consists of 24 detector blocks where each block consists of a 4 × 8 array of 2.2 × 2.2 × 15 mm3 LYSO crystal directly coupled to a 4 × 8 non-magnetic APD array. The scanner has an inner diameter of 100 mm and an axial extent of 18 mm. Resolution measurements were carried out for the prototype system to evaluate the depth of interaction effects. Average resolution less than 2 mm FWHM was maintained throughout the field of view. The prototype PET system was operated unshielded inside the RF coil of the Aurora 1.5 T dedicated breast MRI machine. Artifact free MRI images with good SNR were obtained.
Keywords :
biological organs; biomedical MRI; gynaecology; image reconstruction; image resolution; medical image processing; positron emission tomography; Brookhaven National Laboratory; LYSO crystal detector; depth-of-interaction effects; image reconstruction; magnetic flux density 1.5 T; nonmagnetic APD array; prototype system; resolution measurements; simultaneous PET-MRI breast imaging system; size 100 mm; size 18 mm; Assembly systems; Breast; Coils; Detectors; Image reconstruction; Magnetic resonance imaging; Positron emission tomography; Prototypes; Radio frequency; Sensor arrays;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5401742
