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• W4312480446 abstract "Molecular breast imaging (MBI) has been shown to have high sensitivity for lesion detection, particularly in patients with dense breasts where conventional mammography is limited. However, relatively high radiation dose and long imaging time are limiting factors. Most current MBI systems are based on planar imaging. Improved performance can be achieved using tomographic techniques, which normally involve detector motion. Our goal is to develop a low-dose stationary tomographic MBI system with similar or better performance in terms of lesion detection compared to planar MBI. The proposed system utilizes two opposing cadmium zinc telluride detectors with high intrinsic resolution and depth of interaction (DOI) capability, combined with densely packed multipinhole collimators. This leads to improved efficiency and adequate angular sampling, but also to significant multiplexing (MX), which can result in artefacts. We have developed de-MX algorithms that take advantage of the DOI information. We have performed both analytic and Monte Carlo simulations to demonstrate the feasibility, optimize the design and investigate the expected performance of the proposed system. Lesion detectability was preserved with reduction of acquisition time (or radiation dose) by a factor of 2 compared to planar images at the lowest reported dose. The first prototype is under evaluation at Kromek." @default.
• W4312480446 created "2023-01-05" @default.
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• W4312480446 date "2023-03-01" @default.
• W4312480446 modified "2023-09-26" @default.
• W4312480446 title "Design of a Low-Dose, Stationary, Tomographic Molecular Breast Imaging System Using 3-D Position Sensitive CZT Detectors" @default.
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• W4312480446 doi "https://doi.org/10.1109/trpms.2022.3223129" @default.
• W4312480446 hasPublicationYear "2023" @default.
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