Share Email Print
cover

Proceedings Paper

Therapy operating characteristic (TOC) curves and their application to the evaluation of segmentation algorithms
Author(s): Harrison H. Barrett; Donald W. Wilson; Matthew A. Kupinski; Kasarachi Aguwa; Lars Ewell; Robert Hunter; Stefan Müller
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This paper presents a general framework for assessing imaging systems and image-analysis methods on the basis of therapeutic rather than diagnostic efficacy. By analogy to receiver operating characteristic (ROC) curves, it introduces the Therapy Operating Characteristic or TOC curve, which is a plot of the probability of tumor control vs. the probability of normal-tissue complications as the overall level of a radiotherapy treatment beam is varied. The proposed figure of merit is the area under the TOC, denoted AUTOC. If the treatment planning algorithm is held constant, AUTOC is a metric for the imaging and image-analysis components, and in particular for segmentation algorithms that are used to delineate tumors and normal tissues. On the other hand, for a given set of segmented images, AUTOC can also be used as a metric for the treatment plan itself. A general mathematical theory of TOC and AUTOC is presented and then specialized to segmentation problems. Practical approaches to implementation of the theory in both simulation and clinical studies are presented. The method is illustrated with a a brief study of segmentation methods for prostate cancer.

Paper Details

Date Published: 27 February 2010
PDF: 8 pages
Proc. SPIE 7627, Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment, 76270Z (27 February 2010); doi: 10.1117/12.844189
Show Author Affiliations
Harrison H. Barrett, College of Optical Sciences, The Univ. of Arizona (United States)
Donald W. Wilson, College of Optical Sciences, The Univ. of Arizona (United States)
Matthew A. Kupinski, College of Optical Sciences, The Univ. of Arizona (United States)
Kasarachi Aguwa, College of Optical Sciences, The Univ. of Arizona (United States)
Lars Ewell, The Univ. of Arizona (United States)
Robert Hunter, The Univ. of Arizona (United States)
Stefan Müller, Univ. of Duisberg-Essen (Germany)


Published in SPIE Proceedings Vol. 7627:
Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment
David J. Manning; Craig K. Abbey, Editor(s)

© SPIE. Terms of Use
Back to Top