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.
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.
Authors: Nadine Kawel-Boehm; Scott J Hetzel; Bharath Ambale-Venkatesh; Gabriella Captur; Christopher J Francois; Michael Jerosch-Herold; Michael Salerno; Shawn D Teague; Emanuela Valsangiacomo-Buechel; Rob J van der Geest; David A Bluemke Journal: J Cardiovasc Magn Reson Date: 2020-12-14 Impact factor: 5.364
Authors: John N Oshinski; Jana G Delfino; Puneet Sharma; Ahmed M Gharib; Roderic I Pettigrew Journal: J Cardiovasc Magn Reson Date: 2010-10-07 Impact factor: 5.364
Authors: W Patricia Bandettini; Sujata M Shanbhag; Christine Mancini; Delaney R McGuirt; Peter Kellman; Hui Xue; Jennifer L Henry; Margaret Lowery; Swee Lay Thein; Marcus Y Chen; Adrienne E Campbell-Washburn Journal: J Cardiovasc Magn Reson Date: 2020-05-18 Impact factor: 5.364
Authors: Bryan Wilner; Sonia Garg; Colby R Ayers; Christopher D Maroules; Roderick McColl; Susan A Matulevicius; James A de Lemos; Mark H Drazner; Ronald Peshock; Ian J Neeland Journal: J Am Heart Assoc Date: 2017-07-19 Impact factor: 5.501