Japanese Journal of Radiological Technology
Online ISSN : 1881-4883
Print ISSN : 0369-4305
ISSN-L : 0369-4305
FOCAL SPOT SIZE AND SEPARATION IN STEREOSCOPIC MAGNIFICATION RADIOGRAPHY (II. Radiographic Technology for Stereoscopic Magnification)
KATSUHEI HORITAKEIICHI HASEGAWAMITSUTOSHI NAITOHTADAO ABEMAMORU IWANE
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1983 Volume 39 Issue 3 Pages 322-325

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Abstract

Serial stereoscopic magnification radiography was easily performed due to the development of a device which has a microfocus rotating within the same X-ray tube housing. Comparied with contact stereoscopic radiography, there are some advantages in this technique, such as an increase in detail recognition, higher quality images anda decrease in the exposure of patients to radiation. In this study, we evaluated the followings using the X-ray tube for serial stereoscopic magnification radiography. 1. Modulation for the microfocal spot size.While the focusing voltage or the tube current was appropriately changed, the focal spot became smaller almost being reduced to the nominal spot size. 2. Comparison of the discrimination between in the stereoscopic magnification technique and the contact stereoscopic technique. The former's focal spot separation was 25mm or 50mm, and the latter was 100mm. 3. Stereoscopic image using our originaal charts and scales.

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© 1983 Japanese Society of Radiological Technology
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