Reduction of image artifacts from support structures in tomograp

Details Reduction of image artifacts from support structures in tomograp Reduction of image artifacts from support structures in tomograp

1991-11-27

1993-07-06

Weinhardt, Robert A.

Boots, shoes, and leggings

36441313, 36441316, 36441318, G06F 1542

Patent

active

052259803

ABSTRACT:
An apparatus for reducing image artifacts caused by over-ranging or clipping of the data collected in a tomographic scan using a patient support, models the density profile of the patient support with a polynomial. Coefficients of the polynomial are stored in a look-up table according to gantry angle and used to estimate the over-range data. The estimated data is blended with the in-range data by convolving an over-range mask indicating which data is in-range and which data is over-range with a box car convolution kernel which produces a trapezoidal weighting mask. This weighting mask is multiplied by the estimated data and then summed to the in-range data to correct for the over-range portions of the data collected.

REFERENCES:
patent: 4550371 (1985-10-01), Glover et al.
patent: 4590558 (1986-05-01), Glover et al.
patent: 4606004 (1986-08-01), Crawford et al.

Affiliated with

Also associated with

Rating

Reduction of image artifacts from support structures in tomograp does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reduction of image artifacts from support structures in tomograp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reduction of image artifacts from support structures in tomograp will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1694699