Physical Interpretation of Diaphanograms Using the Computer-Controlled Image Scanner Osiris

Author:

Wallberg H.,Alveryd A.,Carlsson K.

Abstract

Experiments have shown that the light recorded in diaphanography covers approximately the wavelength region of 645 to 900 nm. No significant change in image quality was noted by changing the camera distance between 10 and 25 cm and the light source aperture between 5 and 30 mm. Experiments using polarising filters indicated that the breast is optically isotropic; therefore the results cannot be improved by using polarising filters. In a comparison of various films, Kodak Ektachrome Infrared Film gave the best results. No degradation or variation in image quality was observed when different batches were compared or when the exposed film was stored for 3 weeks before processing. The exposure level is a critical factor and a series of 3 images is needed for optimum evaluation of diaphanograms. The experiments indicate that diaphanography gives consistent results.

Publisher

SAGE Publications

Subject

Radiology, Nuclear Medicine and imaging,Radiological and Ultrasound Technology

Reference8 articles.

1. Isard H. J.: Breast disease and correlation of images. Mammography—thermography—diaphanography. In. Biomedical thermology, p. 321. Alan R. Liss, New York 1982.

2. Diaphanography: A method for evaluation of the female breast

Cited by 3 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Digitization of electrocardiograms by desktop optical scanner;Journal of Electrocardiology;1991-10

2. Imaging by Diaphanography;The Physics of Medical Imaging;1988-01

3. Breast Carcinoma and Benign Breast Lesions;Acta Radiologica. Diagnosis;1985-09

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