Method for quantitative verification of scanning geometry in dig

Details Method for quantitative verification of scanning geometry in dig Method for quantitative verification of scanning geometry in dig

1995-10-24

1998-09-08

Fields, Carolyn E.

Radiant energy

Calibration or standardization methods

250584, G01N 2304

Patent

active

058048197

ABSTRACT:
A method for quantitative verification of line-wise scanning geometry in a digital radiographic read out system. An x-ray transparent phantom substrate with an embedded ruler having a number of equidistant parallel strips that are opaque on top of a photostimulable phosphor screen so that the ruler is parallel with the direction of line-wise scanning. After x-ray exposure and scanning, the position in the scanning direction of the center of each ruler strip is computed. At least one of the following parameters is determined: average pixel sampling distance, geometric distortion value, and total scanned width.

REFERENCES:
patent: 5420441 (1995-05-01), Newman et al.

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