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Development of high quantum efficiency, flat panel, thick detectors for megavoltage x‐ray imaging: An experimental study of a single‐pixel prototype
Author(s) -
Mei X.,
Pang G.
Publication year - 2005
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.2065487
Subject(s) - detective quantum efficiency , detector , optics , flat panel detector , image resolution , flat panel , pixel , physics , x ray detector , quantum efficiency , resolution (logic) , computer science , image quality , image (mathematics) , computer vision , artificial intelligence
Our overall goal is to develop a new generation of electronic portal imaging devices (EPIDs) with a quantum efficiency (QE) more than an order of magnitude higher and a spatial resolution equivalent to that of EPIDs currently used for portal imaging. A novel design of such a high QE flat‐panel based EPID was introduced recently and its feasibility was investigated theoretically [see Pang and Rowlands, Med. Phys. 31, 3004 (2004)]. In this work, we constructed a prototype single‐pixel detector based on the novel design. Some fundamental imaging properties including the QE, spatial resolution, and sensitivity of the prototype detector were measured with a 6 MV beam. It has been shown that the experimental results agree well with theoretical predictions and further development based on the novel design including the construction of a prototype area detector is warranted.