Three-dimensional lesion detection in SPECT using artificial neural networks

Georgia D. Tourassi; Carey E. Floyd Jr.

doi:10.1117/12.175094

11 May 1994 Three-dimensional lesion detection in SPECT using artificial neural networks

Georgia D. Tourassi, Carey E. Floyd Jr.

Proceedings Volume 2167, Medical Imaging 1994: Image Processing; (1994) https://doi.org/10.1117/12.175094
Event: Medical Imaging 1994, 1994, Newport Beach, CA, United States

Abstract

An artificial neural network was developed to perform lesion detection in single photon emission tomography using information from three consecutive slices. The network had a three-layer, feed-forward architecture. For the present study, the detection task was restricted to deciding the presence or absence of a lesion at a given location in the middle slice considering also the two adjacent slices. An 11x11 pixel neighborhood was extracted around the potential location of the lesion in every slice. The total 363 pixel values represented the input information given to the network. Then, the network was trained using the backpropagation algorithm to output 1 if a lesion was present in the middle slice and 0 if not. The diagnostic performance of the 3D detection network was evaluated for various noise levels and lesion sizes. In addition, the 3D detection network was compared to a 2D network trained to perform the same detection task based only on the middle slice. In all cases, the 3D network significantly outperformed the 2D network. This study shows the potential of feedforward, backpropagaion networks to view multiple images simultaneously when performing a lesion detection task.

Citation Download Citation

Georgia D. Tourassi and Carey E. Floyd Jr. "Three-dimensional lesion detection in SPECT using artificial neural networks", Proc. SPIE 2167, Medical Imaging 1994: Image Processing, (11 May 1994); https://doi.org/10.1117/12.175094

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