Characterization of transmission images for use in resolution recovery of cardiac PET imaging

Richard W. Wassenaar

doi:10.1117/12.2283934

29 August 2017 Characterization of transmission images for use in resolution recovery of cardiac PET imaging

Richard W. Wassenaar

Proceedings Volume 10313, Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging; 103133U (2017) https://doi.org/10.1117/12.2283934
Event: Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging, 2002, Ottawa, Ontario, Canada

Abstract

Cardiac PET images suffer from partial volume (PV) losses, a result of motion and limited resolution. A correction can be made using an extravascular (EV) density image, constructed via the subtraction of a blood volume (BV) image from a transmission image (TX, image of tissue density). The ability of the EV image to correct for PV losses is dependent on the noise in the TX image, and by errors in alignment between the TX and BV images. A TX image can be obtained in either a pre-injection or post-injection mode, depending on whether it is taken before or after injection of activity to the subject. The purpose of this study was to determine which TX image best minimizes errors in the EV image. A simple plastic cardiac phantom was used to compare the two TX modes. Calculation and comparison of the centers was used to determine the pre-injection misalignment. Pre-injection offset was -0.33Ã‚Â±0.85 mm vertically, and -0.64Ã‚Â±0.72 mm horizontally from the post- injection image. A CoV of 0.0231Ã‚Â±0.004 and 0.0374Ã‚Â±0.006 was measured for the pre and post-injection images respectively. These results indicate that the pre-injection TX has the best statistical quality, but provides poor alignment.

Citation Download Citation

Richard W. Wassenaar "Characterization of transmission images for use in resolution recovery of cardiac PET imaging", Proc. SPIE 10313, Opto-Canada: SPIE Regional Meeting on Optoelectronics, Photonics, and Imaging, 103133U (29 August 2017); https://doi.org/10.1117/12.2283934

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