Improved Lung Nodule Detection With An Equalized Image

D. B. Plewes; J. C. Wandtke

doi:10.1117/12.958921

18 August 1980 Improved Lung Nodule Detection With An Equalized Image

D. B. Plewes, J. C. Wandtke

Proceedings Volume 0233, Application of Optical Instrumentation in Medicine VIII; (1980) https://doi.org/10.1117/12.958921
Event: Application of Optical Instrumentation in Medicine VIII, 1980, Las Vegas, United States

Abstract

A custom designed equalizing filter was used to test the potential for improving nodule detectability in chest radiographs. The filter was constructed to produce a radiograph so that the film densities over the lung field and mediastinum were approximately equal. Eighteen radiographs were prepared with small lesions placed over the lung field and mediastinal areas of a chest phantom and the films were read by four radiologists. The films prepared with the equalizing filter showed an increased true positive rate of 18% in the retrocardiac, retrodiaphragmatic and mediastinal areas and only a slight decrease of the true positive rate in the lung field (4%). The average false positive rate for films prepared with and without the filter were virtually identical.

Citation Download Citation

D. B. Plewes and J. C. Wandtke "Improved Lung Nodule Detection With An Equalized Image", Proc. SPIE 0233, Application of Optical Instrumentation in Medicine VIII, (18 August 1980); https://doi.org/10.1117/12.958921

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