Medical imaging devices using low-dose X or gamma ionizing radia

Details Medical imaging devices using low-dose X or gamma ionizing radia Medical imaging devices using low-dose X or gamma ionizing radia

1996-03-01

1997-02-18

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Scanner

2503851, G01T 1185

Patent

active

056047835

ABSTRACT:
The invention relates to a medical imaging device using X or gamma ionizing radiation. It comprises a source (S) of radiation in a divergent beam, and a longitudinal slit (F) delivering a sheet-form beam in a plane containing the slit (F). A detection module (1) is provided, which comprises a drift chamber (12) and a multiwire chamber which are filled with a gas. The chambers comprise, in a direction orthogonal to the plane containing the slit (F), the drift space (12) for the electrons, comprising a cathode electrode (11), a converter (121), a proportional multiplier anode (13) for generating multiplied electrons and corresponding ions, and a second cathode electrode (14), placed in the vicinity of the multiplier anode (13). The multiplier anode (13) and the second cathode electrode (14) consist of conductor elements extending in two parallel planes, along substantially orthogonal directions, in order to permit two-dimensional localization of the electrons in this plane.

REFERENCES:
patent: 4317038 (1982-02-01), Charpak
patent: 5521956 (1996-05-01), Charpak
Nuclear Instruments and Methods in Physics Research A283 (1989) pp. 431-435, "Multiwire Proportional Chamber for a Digital Radiographic Installation," Baru et al. no month.
2107a Nuclear Instruments & Methods of Physics Research A, A310 (1991) Dec. 1, "Data Acquisition for a Medical Imaging MWPC Detector", McKee et al. no month.
Nuclear Instruments and Methods 156 (1978) 1-17, "Applications of Proportional Chambers to Some Problems in Medicine and Biology, " pp. 1-17, Charpak. no month.
European Organization for Nuclear Research, "An Interesting Fall-Out of High-Energy Physics Techniques: . . . ", pp. 1-20, Charpak et al. 1976, no month.
European Organization for Nuclear Research, "The High-Density Multiwire Drift Chamber," Jeavons et al., 1974 no month.
"Digital Radiographic Installation for Medical Diagnostics," Institute of Nuclear Physics, pp. 1-25, 1989, Babichev et al no month.
Physics Letters, "The Multistep Avalanche Chamber: A New High-Rate, High-Accuracy Gaseous Detector," pp. 523-528, vol. 78B, No. 4, Oct. 9, 1978, Charpak et al.

Affiliated with

Also associated with

Rating

Medical imaging devices using low-dose X or gamma ionizing radia does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Medical imaging devices using low-dose X or gamma ionizing radia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Medical imaging devices using low-dose X or gamma ionizing radia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1607695