| Title | Dual-source parallel radiofrequency transmission for magnetic resonance breast imaging at 3 T: Any added clinical value? |
| Authors | Jiang, Lei Zhou, Yiming Zhou, Cheng Chen, Min Dai, Yongming Fu, Yuan Zhao, Xuna |
| Affiliation | Peking Univ, Affiliated Coll 5, Beijing Hosp, Dept Radiol, Beijing 100871, Peoples R China. Capital Med Univ, Affiliated Coll, Dept Radiol, Beijing, Peoples R China. Philips Healthcare, Andover, MA USA. |
| Keywords | Breast Magnetic resonance imaging Dual-source Parallel imaging 3T CHRONIC LIVER-DISEASES RF TRANSMISSION SINGLE-SOURCE MRI EXCITATION HOMOGENEITY SPINE ARRAY |
| Issue Date | 2014 |
| Publisher | 磁共振成像 |
| Citation | MAGNETIC RESONANCE IMAGING.2014,32,(5),523-528. |
| Abstract | Purpose: To investigate the influence of dual-source parallel radiofrequency (RF) excitation on clinical breast MR images. Methods: A 3 T MR system with both dual-source and conventional single-source RF excitations was used to examine 22 patients. Axial TSE-T2WI with fat suppression, TSE-T1WI without fat suppression, THRIVE (3D field echo) and DWI (SE-EPI) were obtained by using both excitation techniques. Image homogeneity, image contrast and lesion conspicuity were measured or independently scored by two radiologists and were compared by paired-sample t test or Wilcoxon test. Results: Both excitations revealed 24 lesions. For SE sequences using dual-source mode, image homogeneity was improved (P = 0.00), scan time was reduced, and ghost artifacts on DWI were significantly reduced (P = 0.00). However, image contrast was not increased and lesion conspicuity had no significant difference between two modes, except DWI on which lesion conspicuity was significantly improved (P = 0.00), due to less ghost artifacts. For field-echo sequence, image homogeneity, acquisition time, image contrast and lesion conspicuity had no significant difference between the two modes. Conclusions: Dual-source parallel RF transmission has some added value for improving breast image quality. However, its value is limited in terms of improving lesion detection and characterization. (C) 2014 Elsevier Inc. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/189426 |
| ISSN | 0730-725X |
| DOI | 10.1016/j.mri.2014.01.010 |
| Indexed | SCI(E) PubMed |
| Appears in Collections: | 北京医院 |
