Very Small Focal Spot Tube And Its Clinical Application

Shinji TAKAHASHI

doi:10.1117/12.954282

1 May 1974 Very Small Focal Spot Tube And Its Clinical Application

Shinji TAKAHASHI

Proceedings Volume 0056, Medical X-Ray Photo-Optical Systems Evaluation; (1974) https://doi.org/10.1117/12.954282
Event: Medical X-Ray Photo-Optical Systems Evaluation, 1974, Columbia, United States

Abstract

For high magnification radiography very small focal spot tube should be used. In 1953 we reconstructed the usual fixed anode tube (Toshiba Sealex, 10 kW) so that the potential of the focusing cup became lower than that of the heating fil ent by inserting resistence of 70 ka into the circuit containing the focusing cup and the heating filament. The electron beam e itted from the heating filament was biased and the focal spot of 0.15 mm in size was obtained. The elbow joint or the lung of the adult was roentgenograph ed in 2 or 3 times magnification(1). This type of X-ray tube has been developed step by step and at present 0.1 or 0.05 mm grid biased focal spot tube is available in Japan (Table 1).

Citation Download Citation

Shinji TAKAHASHI "Very Small Focal Spot Tube And Its Clinical Application", Proc. SPIE 0056, Medical X-Ray Photo-Optical Systems Evaluation, (1 May 1974); https://doi.org/10.1117/12.954282

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available