Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla.

Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Research Abstract Details 

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Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Abstract Text:

Chun Ruan,Scott H Yang,Kenneth Cusi,Feng Gao,Geoffrey D Clarke,

OBJECTIVE: Magnetic resonance imaging (MRI) at 3 T is significantly different than 1.5 T and needs to be optimized due to increased signal-to-noise ratio (SNR) and specific absorption ratio (SAR). This study tests the hypothesis that first-pass myocardial perfusion MRI using saturation recovery (SR)-TrueFISP with parallel imaging is superior to SR-TurboFLASH and a more achievable technique for clinical application at 3 T. MATERIALS AND METHODS: Myocardial perfusion imaging was performed on 12 subjects using SR-TurboFLASH and SR-TrueFISP sequences combined with parallel imaging. Four myocardial slices were acquired and evaluated by image segmentation. Quality of the measurements was determined from SNR, contrast-to-noise ratio (CNR), enhancement-to-noise ratio (ENR), and myocardial perfusion upslope. Data were analyzed using a 2-way ANOVA with imaging method and segment number as the independent variables. RESULTS: SNR, CNR, ENR, and upslope were significantly higher for SR-TrueFISP versus SR-TurboFLASH (P < 0.001). Significant differences in SNR, CNR, ENR, and upslope were found among the myocardial segments (P < 0.005). CONCLUSIONS: Optimized SR-TrueFISP first-pass myocardial perfusion MRI at 3 T has superior image quality compared with SR-TurboFLASH, independent of the myocardial segment analyzed. However, coil sensitivity nonuniformities and dielectric resonance effects cause signal intensity differences between myocardial segments that must be accounted for when interpreting 3 T perfusion studies.

Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Publishing Authors By Initials

C Ruan,SH Yang,K Cusi,F Gao,GD Clarke,

For similar equipment and supplies: phantoms, imaging research abstracts see: equipment and supplies: phantoms, imaging research

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MEDLINE DATE:

Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Investigative radiology

VOLUME: 42

Page Numbers: 352-60

Journal Abbreviation:

ISSN: 0020-9996

DAY: 3

MONTH: Jun

YEAR: 2007

Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 45377

Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Keywords Mesh Terms:

KEYWORDS: Phantoms, Imaging

MESH TERMS: methods

Chemical & Substance for Abstract: Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla. Information

Substance Name: Gadolinium DTPA

Registry Number: 80529-93-7

Grant and Affiliation Information for Contrast-enhanced first-pass myocardial perfusion magnetic resonance imaging with parallel acquisition at 3.0 Tesla.

AFFILIATION: Department of Radiology, University of Texas Health Science Center at San Antonio, San Antonio, Texas 78284-6200, USA.

Country: United States

AGENCY: United States NCRR

GRANT: M01-RR-01346

ACRONYM: RR

MEDLINETA: Invest Radiol

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