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The Effect of Low Dose CT Matrix Size Variation on Qualitative and Semi-Quantitative Analysis of Positron Emission Tomography (PET) Images

Article

Last updated: 03 Jan 2025

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Abstract

Objective: The purpose of the study was to
evaluate the qualitative and semiquantitative effects of using different lowdose computed tomography (CT) matrix
sizes for attenuation correction of PET
images. Methods: Co-registered 2-[F18]-
fluoro-2-deoxy-D-glucose (FDG)-PET and
CT images were acquired using a combined
PET/CT scanner according to a
standardized protocol. PET/CT
reconstruction was repeated using default
reconstruction protocols with different
matrix sizes for low dose CT (512,768 and
1024) in 25 patients. The resulting images
were analyzed qualitatively “image
quality" and semi-quantitatively using
“mean SUV & Signal to Noise Ratio
(SNR)". Results: No significant difference
in the resulting attenuated corrected images
reconstructed with the different matrix
sizes either qualitatively or semiquantitatively.
Conclusion: The matrix size of the low
dose CT used in the attenuation correction
of PET images does not affect the image
quality or semi-quantitative parameters.

DOI

10.21608/egyjnm.2013.5461

Keywords

PET/CT, Attenuation correction, Matrix Size, SUV, SNR

Authors

First Name

Hesham

Last Name

Abdelgawad

MiddleName

-

Affiliation

Nuclear Medicine Unit, Faculty of Medicine, Cairo University, Egypt.

Email

hesham_ag@yahoo.com

City

-

Orcid

-

Volume

8

Article Issue

8

Related Issue

945

Issue Date

2013-12-01

Receive Date

2018-02-21

Publish Date

2013-12-01

Page Start

63

Page End

69

Print ISSN

1687-4994

Online ISSN

2536-9113

Article File

EGYJNM_Volume 8_Issue 8_Pages 63-69.pdf

PDF . 497.6kB

Link

https://egyjnm.journals.ekb.eg/article_5461.html

Detail API

https://egyjnm.journals.ekb.eg/service?article_code=5461

Order

7

Type

Original Paper, Physics

Type Code

387

Publication Type

Journal

Publication Title

Egyptian Journal Nuclear Medicine

Publication Link

https://egyjnm.journals.ekb.eg/

MainTitle

The Effect of Low Dose CT Matrix Size Variation on Qualitative and Semi-Quantitative Analysis of Positron Emission Tomography (PET) Images

Details

Type

Article

Created At

22 Jan 2023