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EVALUATING THE SPATIAL-RESOLUTION PERFORMANCE OF A TIME-RESOLVED OPTICAL IMAGING-SYSTEM

HEBDEN, JC; (1992) EVALUATING THE SPATIAL-RESOLUTION PERFORMANCE OF A TIME-RESOLVED OPTICAL IMAGING-SYSTEM. MED PHYS , 19 (4) 1081 - 1087.

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Abstract

An imaging system is being developed as a possible means of screening for breast cancer using harmless doses of visible or near-infrared radiation. This system produces transmission images of highly scattering objects by recording and discriminating between the times-of-flight of transmitted photons. Experiments have been performed to evaluate the likely spatial resolution performance of such a system. This involved measuring the edge profile produced by an opaque mask embedded in a highly scattering medium, and evaluating the spatial resolution as a function of the period of time over which transmitted light was integrated. The results suggest that a resolution of a few millimeters is achievable with a system with a temporal resolution of about 10 ps.

Type: Article
Title: EVALUATING THE SPATIAL-RESOLUTION PERFORMANCE OF A TIME-RESOLVED OPTICAL IMAGING-SYSTEM
Keywords: TIME-OF-FLIGHT, OPTICAL IMAGING, MODULATION TRANSFER FUNCTION (MTF), SCREENING MAMMOGRAPHY, TRANSILLUMINATION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: http://discovery.ucl.ac.uk/id/eprint/112528
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