PMID: 15248588Jul 14, 2004Paper

Positron emission mammography with tomographic acquisition using dual planar detectors: initial evaluations

Physics in Medicine and Biology
Mark F SmithAndrew Weisenberger

Abstract

Positron emission mammography (PEM) with tomographic acquisition using dual planar detectors rotating about the breast can obtain complete angular sampling and has the potential to improve activity estimation compared with PEM using stationary detectors. PEM tomography (PEMT) was compared with stationary PEM for point source and compressed breast phantom studies performed with a compact dual detector system. The acquisition geometries were appropriate for the target application of PEM guidance of stereotactic core biopsy. Images were reconstructed with a three-dimensional iterative maximum likelihood expectation maximization algorithm. PEMT eliminated blurring normal to the detectors seen with stationary PEM. Depth of interaction effects distorted the shape of the point spread functions for PEMT as the angular range from normal incidence of lines of response used in image reconstruction increased. Streak artefacts in PEMT for large detector rotation increments led to the development of an expression for the maximum rotation increment that maintains complete angular sampling. Studies with a compressed breast phantom were used to investigate contrast and signal-to-noise ratio (SNR) trade-offs for different sized spherical tumour ...Continue Reading

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Citations

Nov 21, 2008·AJR. American Journal of Roentgenology·Carrie B HruskaMichael K O'Connor
May 3, 2013·Medical Physics·Carrie B Hruska, Michael K O'Connor
Oct 1, 2009·PET Clinics·Habib Zaidi, Christopher Thompson
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Oct 1, 2016·Brain and Behavior·Christopher E BauerStan Majewski
Feb 2, 2018·Medical Physics·Raymond R RaylmanMark Perna
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Jan 21, 2011·Physics in Medicine and Biology·Satoshi YamaguchiHiroki Shirato
May 6, 2017·Physics in Medicine and Biology·Andre Z KymeSteven R Meikle
Feb 3, 2016·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·David F C HsuCraig S Levin

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