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Time‐gated imaging in planar and tomographic x‐ray imaging
Author(s) -
Grätz Matthias,
Kiernan Laurence,
Herrlin Kristian
Publication year - 1999
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 - 10.1118/1.598535
Subject(s) - monte carlo method , medical imaging , tomographic reconstruction , detector , planar , tomography , optics , iterative reconstruction , radiography , computed radiography , medical physics , physics , nuclear medicine , image quality , medicine , computer science , radiology , image (mathematics) , computer vision , computer graphics (images) , statistics , mathematics
Time‐gated imaging is a new technique for scatter suppression in radiological imaging, based on the use of ultrashort x‐ray pulses in combination with a fast gatable detector. We demonstrate scatter suppression in both planar and computed tomography (CT) radiography in an experimental model using x rays from a laser‐produced plasma. The scatter‐suppression efficiency of time‐gated imaging is found to be similar to existing standard techniques. Furthermore, it allows for a potential decrease in patient dose. Monte‐Carlo simulations confirm these results. We present an overview including theoretical simulations, experimental studies and comparisons to established techniques. The current technical limitations are evaluated and possible future applications in volumetric CT imaging are discussed.