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

fYear

2009

fDate

Oct. 24 2009-Nov. 1 2009

Firstpage

3315

Lastpage

3317

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 Ã— 8 array of 2.2 Ã— 2.2 Ã— 15 mm³ LYSO crystal directly coupled to a 4 Ã— 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;

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.2009.5401742

Filename

5401742