Using a digital anatomical phantom to optimize an imaging system

Stephan L. Faris; Donald W. Wilson; Harrison H. Barrett; Doug Dougherty; Gene R. Gindi; Ing-Tsung Hsiao

doi:10.1117/12.349565

28 May 1999 Using a digital anatomical phantom to optimize an imaging system

Stephan L. Faris, Donald W. Wilson, Harrison H. Barrett, Doug Dougherty, Gene R. Gindi, Ing-Tsung Hsiao

Proceedings Volume 3659, Medical Imaging 1999: Physics of Medical Imaging; (1999) https://doi.org/10.1117/12.349565
Event: Medical Imaging '99, 1999, San Diego, CA, United States

Abstract

We seek to optimize a SPECT brain-imaging system for the task of detecting a small tumor located at random in the brain. To do so, we have created a computer model. The model includes three-dimensional, digital brain phantoms which can be quickly modified to simulate multiple patients. The phantoms are then projected geometrically through multiple pinholes. Our figure of merit is the Hotelling trace, a measure of detectability by the ideal linear observer. The Hotelling trace allows us to quantitatively measure a system's ability to perform a specific task. Because the Hotelling trace requires a large number of samples, we reduce the dimensionality of our images using Laguerre-Gauss functions as channels. To illustrate our method, we compare a system built from small high-resolution cameras to one utilizing larger, low-resolution cameras.

Citation Download Citation

Stephan L. Faris, Donald W. Wilson, Harrison H. Barrett, Doug Dougherty, Gene R. Gindi, and Ing-Tsung Hsiao "Using a digital anatomical phantom to optimize an imaging system", Proc. SPIE 3659, Medical Imaging 1999: Physics of Medical Imaging, (28 May 1999); https://doi.org/10.1117/12.349565

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