Optimization of detector sampling for mutlislice CT scanners

Jiang Hsieh

doi:10.1117/12.349573

28 May 1999 Optimization of detector sampling for mutlislice CT scanners

Jiang Hsieh

Proceedings Volume 3659, Medical Imaging 1999: Physics of Medical Imaging; (1999) https://doi.org/10.1117/12.349573
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

In computed tomography (CT), the elapsed time of a complete organ coverage is an important parameter for many clinical applications. This requirement has let to the development of both sub-second and multi-slice CT scanners. Examples of the multi-slice scanners include twin beam CT and quad CT (QCT). Although they are different in terms of number of detector rows employed in the design, they share the common property that the spacing between adjacent detector rows is essentially identical to the detector cell size, and the spacing remains constant regardless of the scanning conditions. This restriction has led to a sub-optimal sampling along the patient axis. In this paper, we present an optimized detector sampling scheme. In the proposed scheme, the detector spacing is dynamically adjusted based on the helical pitch. This allows an improved sampling pattern along the patient axis. In conjunction with the proposed sampling scheme, an helical interpolation reconstruction algorithm is proposed. Detailed analysis and computer simulations are performed to validate our approach.

Citation Download Citation

Jiang Hsieh "Optimization of detector sampling for mutlislice CT scanners", Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); https://doi.org/10.1117/12.349573

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