Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study.

Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study. Research Abstract Details 

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Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study. Abstract Text:

Vincent A Magnotta,Lee Friedman, ,

The ability to analyze and merge data across sites, vendors, and field strengths depends on one's ability to acquire images with the same image quality including image smoothness, signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR). SNR can be used to compare different magnetic resonance scanners as a measure of comparability between the systems. This study looks at the SNR and CNR ratios in structural fast spin-echo T2-weighted scans acquired in five individuals across ten sites that are part of Functional Imaging Research of Schizophrenia Testbed Biomedical Informatics Research Network (fBIRN). Different manufacturers, field strengths, gradient coils, and RF coils were used at these sites. The SNR of gray matter was fairly uniform (41.3-43.3) across scanners at 1.5 T. The higher field scanners produced images with significantly higher SNR values (44.5-108.7 at 3 T and 50.8 at 4 T). Similar results were obtained for CNR measurements between gray/white matter at 1.5 T (9.5-10.2), again increasing at higher fields (10.1-28.9 at 3 T and 10.9 at 4 T).

Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study. Publishing Authors By Initials

VA Magnotta,L Friedman, ,

For similar information science: computing methodologies: signal processing, computer-assisted research abstracts see: information science: computing methodologies: signal processing, computer-assisted research

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Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Journal of digital imaging : the official journal

VOLUME: 19

Page Numbers: 140-7

Journal Abbreviation:

ISSN: 0897-1889

DAY: 3

MONTH: Jun

YEAR: 2006

Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study. Information

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LANGUAGE: eng

NlmUniqueID: 9100529

Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study. Keywords Mesh Terms:

KEYWORDS: Signal Processing, Computer-Assisted

MESH TERMS: standards

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Grant and Affiliation Information for Measurement of Signal-to-Noise and Contrast-to-Noise in the fBIRN Multicenter Imaging Study.

AFFILIATION: Department of Radiology, University of Iowa, 0453-D JCP, Iowa City, IA 52242, USA. vincent-magnotta@uiowa.edu

Country: United States

AGENCY: United States NCRR

GRANT: P41RR13218

ACRONYM: RR

MEDLINETA: J Digit Imaging

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