Optimal reconstruction matrix and PET image filtration for point-spread function and time-of-flight reconstruction – A phantom study

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15110%2F17%3A73583072" target="_blank" >RIV/61989592:15110/17:73583072 - isvavai.cz</a>

Alternative codes found

RIV/00098892:_____/17:N0000065

Result on the web

<a href="http://dx.doi.org/10.1016/j.ejmp.2017.06.002" target="_blank" >http://dx.doi.org/10.1016/j.ejmp.2017.06.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ejmp.2017.06.002" target="_blank" >10.1016/j.ejmp.2017.06.002</a>

Result language

angličtina

Original language name

Optimal reconstruction matrix and PET image filtration for point-spread function and time-of-flight reconstruction – A phantom study

Original language description

Introduction: The aim of this study was to determine the optimal image matrix and half-width of the Gaussian filter after iterative reconstruction of the PET image with point-spread function (PSF) and time-of-flight (TOF) correction, based on measuring the recovery coefficient (RC) curves. The measured RC curves were compared to those from an older system which does not use PSF and TOF corrections. Materials and methods: The measurements were carried out on a NEMA IEC Body Phantom. We measured the RC curves based on SUVmax and SUVA50 in source spheres with different diameters. The change in noise level for different reconstruction parameter settings and the relation between RC curves and the administered activity were also evaluated. Results: With an increasing size of image matrix and reduction in the half-width of the postreconstruction Gaussian filter, there was a significant increase in image noise and overestimation of the SUV. The local increase in SUV, observed for certain filtrations and objects with a diameter below 13 mm, was caused by PSF correction. The decrease in administered activity, while maintaining the same conditions of acquisition and reconstruction, also led to overestimation of readings of the SUV and additionally to deterioration in reproducibility. Conclusion: This study proposes a suitable size for the image matrix and filtering for displaying PET and SUV measurements. The benefits were demonstrated as improved image parameters for the newer instrument, these even being found using relatively strong filtration of the reconstructed images.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10304 - Nuclear physics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physica Medica

ISSN

1120-1797

e-ISSN

—

Volume of the periodical

39

Issue of the periodical within the volume

2017 JUL

Country of publishing house

GB - UNITED KINGDOM

Number of pages

5

Pages from-to

95-99

UT code for WoS article

000405493200013

EID of the result in the Scopus database

2-s2.0-85020408254