X-ray or gamma ray systems or devices – Specific application – Absorption
Patent
1984-11-21
1987-11-24
Howell, Janice A.
X-ray or gamma ray systems or devices
Specific application
Absorption
378 5, 378 19, 378146, G01T 1161
Patent
active
047093820
ABSTRACT:
A digital radiography system is disclosed having a multi-element curved detector assembly. The system includes an X-ray tube having a focal spot from which its X-ray energy primarily emanates, and which is spaced from the detector assembly to define a subject examination space. The detector assembly includes a number of individual detector elements each having a radiation sensitive face, the element faces collectively defining a concave curved surface oriented toward the focal spot. The assembly of elements can embody forms including a single curved line of elements, multiple similarly curved lines defining collectively a portion of a cylinder, or a three-dimensional curved array defining a portion of a sphere. Multiple layer stacked arrays can also be used. Each element responds to incident X-rays to produce an electrical charge signal indicative of the radiation. The detector assembly can be scanned relative to a subject in the examination space, and time delay and integrate circuitry is employed to improve the signal to noise characteristics of data represented by the electrical signals, by shifting and adding the signals in synchrony with scan motion prior to processing by imaging circuitry to derive a visual image of internal structure of a subject at the examination space.
REFERENCES:
patent: 3965358 (1976-06-01), Macovski
patent: 4015129 (1977-03-01), Manring
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4069422 (1978-01-01), Hounsfield
patent: 4096390 (1978-06-01), Hounsfield
patent: 4164657 (1979-08-01), Duinker et al.
patent: 4176279 (1979-11-01), Schwierz et al.
patent: 4176280 (1979-11-01), Greschat et al.
patent: 4190772 (1980-02-01), Dinwiddie et al.
patent: 4206361 (1980-06-01), Hounsfield et al.
patent: 4247774 (1981-01-01), Brooks
patent: 4295047 (1981-10-01), Koga et al.
patent: 4298800 (1981-11-01), Goldman
patent: 4315157 (1982-02-01), Barnes
patent: 4355409 (1982-10-01), Amplatz
patent: 4366574 (1982-12-01), Hill
patent: 4383327 (1983-05-01), Kruger
patent: 4394738 (1983-07-01), Wagner
patent: 4411012 (1983-10-01), Pfeiler et al.
patent: 4426721 (1984-01-01), Wang
patent: 4442489 (1984-04-01), Wagner
patent: 4511799 (1985-04-01), Bjorkholm
patent: 4626688 (1986-12-01), Barnes
Fenster, A., "Split Detector for Tomochemestry in Computed Tomography", Jour. Comp. Assist Tomography, 2:243-252, Jul. 1978.
B. A. Arnold, H. Eisenberg, D. Borger and A. Metherell, "Digital Radiography: An Overview", Proceedings of SPIE, vol. 273 Application of Optical Instrumentation in Medicine (Mar. 1981), pp. 215-226.
R. A. Mattson, R. A. Sones, J. B. Stickney, M. M. Tesic and G. T. Barnes, "The Design and Physical Characteristics of a Digital Chest Unit", SPIE, vol. 314, Digital Radiography (1981).
R. A. Kruger, C. A. Mistretta, J. Lancaster, T. L. Houk, M. Goodsitt, C. G. Shaw, S. J. Riederer, J. Hicks, J. Sackett, A. B. Crummy and D. Fleming, "A Digital Video Image Processor for Real-Time X-Ray Subtraction Imaging", Optical Engineering, vol. 17, No. 6 (Nov.-Dec. 1978), pp. 652-657.
Hannaher Constantine
Howell Janice A.
Picker International Inc.
LandOfFree
Imaging with focused curved radiation detectors does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Imaging with focused curved radiation detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging with focused curved radiation detectors will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2425531