Energy dependent gain correction for radiation detection

Details Energy dependent gain correction for radiation detection Energy dependent gain correction for radiation detection

1985-11-15

1988-12-06

Smith, Jerry

Boots, shoes, and leggings

250361R, G01T 120

Patent

active

047899301

ABSTRACT:
A method and apparatus for calibrating the detector gain of a dual energy digital radiography system is provided. A basis material calibration object is scanned to create low and high energy pixel data. A regression is performed on the pixel data to derive at least one high energy calibration vector and at least one low energy calibration vector. The calibration vectors are transformed into high and low energy gain functions represented by a Taylor series expansion. An examination object is scanned to create low and high energy image data. The image data is combined with the gain function to create corrected low and high energy image data.

REFERENCES:
patent: 3848130 (1974-11-01), Macovski
patent: 3965358 (1976-06-01), Macovski
patent: 4029963 (1977-06-01), Alvarez et al.
patent: 4035651 (1977-07-01), LeMay
patent: 4068306 (1978-01-01), Chen et al.
patent: 4070707 (1978-01-01), Barber
patent: 4149081 (1979-04-01), Seppi
patent: 4217641 (1980-08-01), Naparstek
patent: 4228515 (1980-10-01), Genna et al.
patent: 4472823 (1984-09-01), Walthham
patent: 4497061 (1985-01-01), Hounsfield
patent: 4540882 (1985-09-01), Vinegar et al.
patent: 4571491 (1986-02-01), Vinegar et al.
patent: 4628688 (1986-12-01), Barnes
Aaron Fenster, "Slit Xenon Detector for Tomochemistry in Computed Tomography" Jul. 1978.
Riederer, S. J., et al., "Limitations to Iodine Isolation Using a Dual Beam Non-K-Edge Approach", Medical Physics 8(1) Jan./Feb. 1981, pp. 54-61.
Lehman, L. A., et al., "Generalized Image Combinations in Dual kVp Digital Radiography", Medical Physics, 8(5), Sep./Oct. 1981, pp. 659-667.
Peschmann, K. R., "Xenon Gas Ionization Detectors", Radiology of the Skull and Brain Technical Aspects of Computed Tomography, vol. 5, Section III, pp. 4112-4126, 1981, the C. V. Mosby Company.
Wong, C. K., et al., "Calibration Procedure in Dual-Energy Scanning Using the Basis Function Technique", Medical Physics, 10(5), Sep./Oct. 1983, pp. 628-635.
Drost, D. J., et al., "A Xenon Ionization Detector for Scanned Projection Radiography: 95-Channel Prototype Evaluation", Medical Physics, 11(5), Sep./Oct. 1984, pp. 602-609.
Johns, P. J., et al., "Dual-Energy Mammography: Initial Experimental Results", Medical Physics, 12(3), May/Jun. 1985, pp. 297-304.

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