Inverse Radon transform for optoacoustic imaging

Valeri G. Andreev; Dmitry V. Popov; Dmitriy V. Sushko; Alexander A. Karabutov; Alexander A. Oraevsky

doi:10.1117/12.429297

15 June 2001 Inverse Radon transform for optoacoustic imaging

Valeri G. Andreev, Dmitry V. Popov, Dmitriy V. Sushko, Alexander A. Karabutov, Alexander A. Oraevsky

Proceedings Volume 4256, Biomedical Optoacoustics II; (2001) https://doi.org/10.1117/12.429297
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Mathematical model of image reconstruction for two-dimensional optoacoustic imaging system is described. It was assumed that receiving transducers are uniformly distributed along the perimeter of a 60 mm radius ring with 2.1 mm gaps between transducer centers and initial data were known with 0.1 mm increments. The algorithm of radial back projection with convolution was used for optoacoustic image reconstruction. The convolution was evaluated with modified Shepp-Logan (MSL) and rectangular (RECT) space spectrum windows. Linear interpolation was applied for calculation of the convolution at the intermediate space points. The following four criteria were employed for estimation of resulting image quality: noise level on entire tomogram, a jump transfer function, loss contrast function and the contrast-dimension reflation. Theoretical expressions for these parameters were derived and used for optimization of the proposed algorithm. Two-dimensional images of computer simulated spherical objects were reconstructed. It was shown that 0.1 mm spatial resolution could be obtained provided the signal-to-noise ratio equals approximately 3 at the tomogram. A very small (0.2 mm diameter) tumor and a small (2-mm diameter) tumor could be clearly revealed at the tomogram if their optical absorption contrast equals at least 2 and 0.1 respectively.

Citation Download Citation

Valeri G. Andreev, Dmitry V. Popov, Dmitriy V. Sushko, Alexander A. Karabutov, and Alexander A. Oraevsky "Inverse Radon transform for optoacoustic imaging", Proc. SPIE 4256, Biomedical Optoacoustics II, (15 June 2001); https://doi.org/10.1117/12.429297

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