title: Improved reproducibility in measuring LV volumes and mass using multicoil breath-hold cine MR imaging.
abstract: There is a generally recognized need for improvement in quality of fast cardiac MR images. Consequently, breath-hold cine MR images were obtained with multiple surface coils connected to phased array receivers, and C/N, intra-observer and inter-observer variabilities for LV volumes and mass were evaluated. Two sets of short-axis images of the LV, one with multiple surface coils and another with a body coil, were acquired in eight subjects with a fast cine MR sequence using k-space segmentation (TR/TE = 7/2.2 msec, temporal resolution = 56 msec). C/N with multicoil imaging was 32.2 +/- 7.6 (mean +/- SD), significantly higher than that with a body coil (11.0 +/- 3.3, P < .01). The mean percentage differences in intra-observer and inter-observer measurements with multicoil imaging were significantly better than those with a body coil. In conclusion, multicoil imaging provides significant gain in C/N on breath-hold cine MRI of the heart. In addition, intra-observer and inter-observer reproducibilities are improved with multicoil imaging.
authors.affiliation: Department of Radiology, University of California San Francisco 94143-0628, USA.
authors.forename: H
authors.initials: H
authors.lastname: Sakuma
authors.forename: S
authors.initials: S
authors.lastname: Globits
authors.forename: M W
authors.initials: MW
authors.lastname: Bourne
authors.forename: A
authors.initials: A
authors.lastname: Shimakawa
authors.forename: T K
authors.initials: TK
authors.lastname: Foo
authors.forename: C B
authors.initials: CB
authors.lastname: Higgins
mesh_terms: D000328:Adult; D005260:Female; D006352:Heart Ventricles / Q000033:anatomy & histology*; D006801:Humans; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods; D008297:Male; D015588:Observer Variation; D015203:Reproducibility of Results; D012119:Respiration; D013318:Stroke Volume