J.Jpn. Surg. Soc.. 83(2): 196-206, 1982

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Original article

CLINICAL AND EXPERIMENTAL STUDIES ON MAMMOGRAPHY, ECHOGRAPHY AND THERMOGRAPHY IN BREAST DISEASES.

During the period through 1976 to 1981, 1413 out patients were examined by mammography, echography and thermography, 103 of which were breast cancers. The diagnostic rate of palpation, mammography, echography and thermography were 82.5%, 96.1%, 91.3% and 82.5%, respectively. High diagnostic rate in mammography owed chiefly to newly developed curved forceps which was devised for the purpose of reducing the objective thickness. Echographic fantom experiments using agar gel showed that minimum size of the tumor which could be caught by the present apparatus was 5mm in diameter.
Thermographic experiments suggested that no less than 5mm³ of volume increase was necessary to detect the change of △ T by 1.0℃. To evaluate each diagnostic finding comprehensively and quantatively score system was used. In this system, each score ranged 1 to 5 points. Applying score system to the clinical cases, total score increased according to the clinical stages, and it was possible to differentiate malignant diseases from benign ones by the score criteria. To ascertain the validity of the score system, the score of each case was compared with the theoretical score which was calculated by the computer according to the discriminant analysis method. The results suggested that score system was reasonable and reliable in the use of clinical cases.

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