Monochromatic computed tomography of the human brain using synchrotron x rays: Technical feasibility

Conference · Tue Jan 01 04:00:00 EST 1991

OSTI ID:5818508

Nachaliel, E; Dilmanian, F A; Garrett, R F; Thomlinson, W C; Chapman, L D; Gmuer, N F; Lazarz, N M; Moulin, H R; Rivers, M L; Rarback, H; Stefan, P M; Spanne, P ^[1]; Luke, P N; Pehl, R; Thompson, A C ^[2]; Miller, M ^[3]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Lawrence Berkeley Lab., CA (United States)
3. Analogic Corp., Peabody, MA (United States)

A monochromatic computed tomography (CT) scanner is being developed at the X17 superconducting wiggler beamline at the National Synchrotron Light Source (NSLS), Brookhaven National Laboratory, to image the human head and neck. The system configuration is one of a horizontal fan beam and an upright seated rotating subject. The purpose of the project are to demonstrate improvement in the image contrast and in the image quantitative accuracy that can be obtained in monochromatic CT and to apply the system to specific clinical research programs in neuroradiology. This paper describes the first phantom studies carried out with a prototype system, using the dual photon absorptiometry (DPA) method at energies of 20 and 39 Kev. The results show that improvements in image contrast and quantitative accuracy are possible with monochromatic DPA CT. Estimates of the clinical performance of the planned CT system are made on the basis of these initial results.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5818508
• Report Number(s): BNL-47068; CONF-9110146--7; ON: DE92007143
• Country of Publication: United States
• Language: English

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550602* -- Medicine-- External Radiation in Diagnostics-- (1980-)
62 RADIOLOGY AND NUCLEAR MEDICINE
ACCURACY
BODY
BRAIN
CENTRAL NERVOUS SYSTEM
COMPUTERIZED TOMOGRAPHY
DIAGNOSTIC TECHNIQUES
ELECTROMAGNETIC RADIATION
MOCKUP
MONOCHROMATIC RADIATION
NERVOUS SYSTEM
ORGANS
PHANTOMS
RADIATIONS
STRUCTURAL MODELS
TOMOGRAPHY