Method of achieving reduced dose X-ray fluoroscopy by employing

Details Method of achieving reduced dose X-ray fluoroscopy by employing Method of achieving reduced dose X-ray fluoroscopy by employing

1992-11-05

1995-07-25

Weinhardt, Robert A.

Boots, shoes, and leggings

36441315, 36441314, G06F 1542

Patent

active

054368294

ABSTRACT:
An interactive system for producing X-ray fluoroscopic images determines X-ray tube photon count and voltage for producing acceptable quality images while minimizing X-ray radiation dosage to a subject. An image is created and a signal to noise (S/N) ratio is estimated from the image by a unitary transform method. The S/N ratio is determined by solving several simultaneous equations and the photon count is estimated to produce an image with a desired S/N ratio. Subsequent X-ray fluoroscopy images are produced with the optimum photon count Q, thereby reducing X-ray dosage. The optimization is repeated periodically to readjust the system.

REFERENCES:
patent: 4260894 (1981-04-01), Neumann
patent: 4467351 (1984-08-01), Wang
patent: 4593371 (1986-06-01), Grajewski
patent: 4747118 (1988-05-01), Spaak
patent: 4942596 (1990-07-01), Eberhard et al.
patent: 4980905 (1990-12-01), Meccariello
patent: 5225979 (1993-07-01), Feldman et al.
U.S. patent application "X-Ray Dose Reduction in Pulsed Systems by Adaptive X-Ray Pulse Adjustment", Ser. No. 07/956,204 by Abdel-Malek, Roehm and Bloomer.
U.S. patent application "X-Ray Fluoroscopy System for Reducing Dosage Employing Iterative Power Ratio Estimation", Ser. No. 07/956,203 by Richard I. Hartley.
U.S. patent application "Reduced Dose X-Ray Fluoroscopy System Employing (Statistical) (Transform-based) Estimation of Poisson Noise", Ser. No. 07/971,652 by Richard I. Hartley.
U.S. patent application "Fluoroscopic Method With Reduced X-Ray Dosage", Ser. No. 07/810,341 by Yassa, Abdel-Mqalek, Bloomer and Srinivas.
"Imaging Systems for Medical Diagnostics", by Krestel, Aktiengesellschaft, Berlin and Munich, p. 103.
"Medical Imaging Systems" by Macovski, 1983 Prentice-Hall, Englewood Cliffs, N.J. 07632, p. 27.
"Effect of Pulsed Progressive Fluoroscopy on Reduction of Radiation Dose in the Cardiac Catherization Laboratory", by Holmes, Wondrow, Gray, Vetter, Fellows and Julsrud, Journal American College of Cardiology, vol. 15, No. 1, pp. 159-162.
"Fundamentals of Digital Image Processing", by Jain, Prentice-Hall (1989).
"Numerical Recipes in C", by Press, Flannery, Teukolsky and Veterling, Cambridge University Press, Cambridge, England (1988).

Affiliated with

Also associated with

Rating

Method of achieving reduced dose X-ray fluoroscopy by employing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of achieving reduced dose X-ray fluoroscopy by employing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of achieving reduced dose X-ray fluoroscopy by employing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-744461