Toward Millisecond Scanning Beam Radiography

S Rudin; D R Bednarek; R Wong; R Kaczmarek

doi:10.1117/12.949490

19 September 1985 Toward Millisecond Scanning Beam Radiography

S Rudin, D R Bednarek, R Wong, R Kaczmarek

Proceedings Volume 0555, Medical Imaging and Instrumentation '85; (1985) https://doi.org/10.1117/12.949490
Event: Medical Imaging and Instrumentation '85, 1985, Boston, United States

Abstract

The rapid scanning beam Rotating Aperture Wheel (RAW) device is capable of achieving about 1,000 beam passes per second over each point in the field of view, allowing millisecond exposure times. Screen-film images of a chest phantom were obtained with exposure times of tens of milliseconds at scan speeds of a few hundred beam passes per second. These are the shortest exposure times ever achieved by a nongrid, purely scanning beam anti-scatter device. Because the scanning beam speed and exposure times were not synchronized for this study, well understood overlap artifacts appeared on the original radiograph. However, this artifactual density variation was subtracted, and the noise variation caused by the different quantum fluence in the alternating regions was imperceptible. A number of artifact correction methods are discussed. Finally, the application of various RAW device configurations to the millisecond exposure times used for cardiac cineradiography are outlined.

Citation Download Citation

S Rudin, D R Bednarek, R Wong, and R Kaczmarek "Toward Millisecond Scanning Beam Radiography", Proc. SPIE 0555, Medical Imaging and Instrumentation '85, (19 September 1985); https://doi.org/10.1117/12.949490

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