The direct use of CT numbers in radiotherapy dosage calculations for inhomogeneous media

• Published in: Physics in medicine & biology Vol. 24; no. 4; pp. 802 - 809
• Main Authors: Parker, R P, Hobday, P A, Cassell, K J
• Format: Journal Article
• Language: English
• Published: England IOP Publishing 01.07.1979
• Subjects: Humans; Lung Neoplasms - radiotherapy; Patient Care Planning; Radiotherapy Dosage; Tomography, X-Ray Computed

Techniques by which the quantitative anatomical data inherent in a CT scan can be directly used in treatment planning are described. The correction algorithms used in the RAD-8 system, based on an effective path length, have been extended to a pixel-by-pixel approach. By calibrating the X-ray transm...