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Proceedings Paper

Flash X-Ray Apparatus With Spectrum Control Functions For Medical Use And Fuji Computed Radiography
Author(s): H. Isobe; E. Sato; Y. Hayasi; M. Suzuki; H. Arima; F. Hoshino
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Paper Abstract

Flash radiographic bio-medical studies at sub-microsecond intervals were performed by using both a new type of flash X-ray(FX) apparatus with spectrum control functions and Fuji Computed Radiography(FCR). This single flasher tends to have a comparatively long exposure time and the electric pulse width of the FX wave form is about 0.3,usec. The maximum FX dose is about 50mR at 1m per pulse, and the effective focal spot varies according to condenser charging voltage, A-C distance, etc., ranging from 1.0 to 3.0mm in diameter, but in the low dose rate region it can be reduced to less than 1.0mm in diameter. The FX dose is determined by the condenser charging voltage and the A-C distance, while the FX spectrum is determined by the average voltage of the FX tube and filters. Various clear FX images were obtained by controlling the spectrum and dose. FCR is a new storage medium for medical radiography developed by the Fuji Photo Film Co., Ltd. and this apparatus has various image forming functions: low dose radiography, film density control, image contrast control, subtraction management and others. We have used this new apparatus in conjunction with our FX radiography and have obtained some new and interesting biomedical radiograms: the edge enhancement image, the instantaneous enlarged image, and the single exposure energy subtraction image using the FX spectrum distribution.

Paper Details

Date Published: 1 February 1985
PDF: 12 pages
Proc. SPIE 0491, 16th Intl Congress on High Speed Photography and Photonics, (1 February 1985); doi: 10.1117/12.967906
Show Author Affiliations
H. Isobe, Iwate Medical University (Japan)
E. Sato, Iwate Medical University (Japan)
Y. Hayasi, Tohoku University (Japan)
M. Suzuki, Tohoku University (Japan)
H. Arima, Tohoku University (Japan)
F. Hoshino, Tohoku University (Japan)

Published in SPIE Proceedings Vol. 0491:
16th Intl Congress on High Speed Photography and Photonics
Michel L. Andre; Manfred Hugenschmidt, Editor(s)

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