Interstudy reproducibility of SSFP cine magnetic resonance: Impact of magnetic field strength and parallel imaging

Christopher D. Maroules, Roderick W McColl, Amit Khera, Ronald M Peshock

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Purpose: To study the effects of field strength and parallel imaging on image contrast and interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady-state free precession (SSFP) cardiovascular magnetic resonance (CMR). Materials and Methods: Thirty-two subjects (20 normal, 12 cardiac patients) underwent four SSFP cine short-axis imaging studies: two at 1.5T, one at 3T, and another at 3T with parallel imaging (SENSE). RV and LV contrast-to-noise ratios (CNRs) were compared between methods. Interstudy reproducibility of RV and LV measurements were assessed by Bland-Altman analyses. Results: 3T SENSE imaging reduced total imaging time from 8 ± 2 minutes to 3 ± 1 minute (P < 0.001). A significant gain in LV CNR was detected between 1.5T and 3T with SENSE (43.8 ± 6.5 vs. 48.4 ± 7.4, P = 0.01), but no significant gain was detected in RV CNR. The reproducibility of LV and RV measurements between two 1.5T studies was not significantly different from the reproducibility between a 1.5T study and a 3T study with SENSE. Conclusion: SENSE imaging at 3T is a reproducible technique for assessing RV and LV structure and function.

Original languageEnglish (US)
Pages (from-to)1139-1145
Number of pages7
JournalJournal of Magnetic Resonance Imaging
Volume27
Issue number5
DOIs
StatePublished - May 2008

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Magnetic Fields
Noise
Magnetic Resonance Spectroscopy

Keywords

  • 3 Tesla
  • Cardiovascular MRI
  • Reproducibility

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology

Cite this

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title = "Interstudy reproducibility of SSFP cine magnetic resonance: Impact of magnetic field strength and parallel imaging",
abstract = "Purpose: To study the effects of field strength and parallel imaging on image contrast and interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady-state free precession (SSFP) cardiovascular magnetic resonance (CMR). Materials and Methods: Thirty-two subjects (20 normal, 12 cardiac patients) underwent four SSFP cine short-axis imaging studies: two at 1.5T, one at 3T, and another at 3T with parallel imaging (SENSE). RV and LV contrast-to-noise ratios (CNRs) were compared between methods. Interstudy reproducibility of RV and LV measurements were assessed by Bland-Altman analyses. Results: 3T SENSE imaging reduced total imaging time from 8 ± 2 minutes to 3 ± 1 minute (P < 0.001). A significant gain in LV CNR was detected between 1.5T and 3T with SENSE (43.8 ± 6.5 vs. 48.4 ± 7.4, P = 0.01), but no significant gain was detected in RV CNR. The reproducibility of LV and RV measurements between two 1.5T studies was not significantly different from the reproducibility between a 1.5T study and a 3T study with SENSE. Conclusion: SENSE imaging at 3T is a reproducible technique for assessing RV and LV structure and function.",
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author = "Maroules, {Christopher D.} and McColl, {Roderick W} and Amit Khera and Peshock, {Ronald M}",
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TY - JOUR

T1 - Interstudy reproducibility of SSFP cine magnetic resonance

T2 - Impact of magnetic field strength and parallel imaging

AU - Maroules, Christopher D.

AU - McColl, Roderick W

AU - Khera, Amit

AU - Peshock, Ronald M

PY - 2008/5

Y1 - 2008/5

N2 - Purpose: To study the effects of field strength and parallel imaging on image contrast and interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady-state free precession (SSFP) cardiovascular magnetic resonance (CMR). Materials and Methods: Thirty-two subjects (20 normal, 12 cardiac patients) underwent four SSFP cine short-axis imaging studies: two at 1.5T, one at 3T, and another at 3T with parallel imaging (SENSE). RV and LV contrast-to-noise ratios (CNRs) were compared between methods. Interstudy reproducibility of RV and LV measurements were assessed by Bland-Altman analyses. Results: 3T SENSE imaging reduced total imaging time from 8 ± 2 minutes to 3 ± 1 minute (P < 0.001). A significant gain in LV CNR was detected between 1.5T and 3T with SENSE (43.8 ± 6.5 vs. 48.4 ± 7.4, P = 0.01), but no significant gain was detected in RV CNR. The reproducibility of LV and RV measurements between two 1.5T studies was not significantly different from the reproducibility between a 1.5T study and a 3T study with SENSE. Conclusion: SENSE imaging at 3T is a reproducible technique for assessing RV and LV structure and function.

AB - Purpose: To study the effects of field strength and parallel imaging on image contrast and interstudy reproducibility of right and left ventricular (RV and LV) measurements using steady-state free precession (SSFP) cardiovascular magnetic resonance (CMR). Materials and Methods: Thirty-two subjects (20 normal, 12 cardiac patients) underwent four SSFP cine short-axis imaging studies: two at 1.5T, one at 3T, and another at 3T with parallel imaging (SENSE). RV and LV contrast-to-noise ratios (CNRs) were compared between methods. Interstudy reproducibility of RV and LV measurements were assessed by Bland-Altman analyses. Results: 3T SENSE imaging reduced total imaging time from 8 ± 2 minutes to 3 ± 1 minute (P < 0.001). A significant gain in LV CNR was detected between 1.5T and 3T with SENSE (43.8 ± 6.5 vs. 48.4 ± 7.4, P = 0.01), but no significant gain was detected in RV CNR. The reproducibility of LV and RV measurements between two 1.5T studies was not significantly different from the reproducibility between a 1.5T study and a 3T study with SENSE. Conclusion: SENSE imaging at 3T is a reproducible technique for assessing RV and LV structure and function.

KW - 3 Tesla

KW - Cardiovascular MRI

KW - Reproducibility

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