Type: Article

CYBPET: A cylindrical PET system for breast imaging

Journal: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (01689002)Year: 11 June 2005Volume: 545Issue: Pages: 427 - 435

Karimian A.^a Thompson C.J.Sarkar S.Raisali G.Pani R.Davilu H.

a :University of Isfahan - IRAN(IR) - Isfahan

GreenDOI:10.1016/j.nima.2005.01.330Language: English

Abstract

We propose a Cylindrical Breast PET (CYBPET) system for breast imaging with patients in the prone position. An individual pendulous breast is covered by thin plastic to provide reduced pressure fixation and surrounded by the crystals inside the CYBPET ring. Each breast is imaged separately. The rest of the body is shielded properly to minimize the contribution of scattered photons from the other breast and the rest of the body. To compare the CYBPET with whole-body PET (WB-PET) the simulations of CYBPET and a WB-PET (GE-Advance) for a 10 mm tumor inside the breast with a lesion to background (breast) activity concentration of 6 to 1 were made. The noise effective count rate (NECR) of CYBPET is about twice that of WB-PET at activity concentrations less than 3.1 μCi/cc. The spatial resolution of CYBPET is better by 25% than the WB-PET. © 2005 Elsevier B.V. All rights reserved. All rights reserved.