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Dual-source parallel radiofrequency transmission for magnetic resonance breast imaging at 3T: any added clinical value?

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机构： [1]Radiology Department, Beijing Hospital, the Fifth Affiliated College of Peking University, Beijing, China. [2]Radiology Department, Beijing Chaoyang Hospital, the Affiliated College of Capital Medical University, Beijing, China. [3]Radiology Department, Beijing Hospital, the Fifth Affiliated College of Peking University, Beijing, China. Electronic address: chenmin62@yahoo.com. [4]Philips Healthcare, Andover, MA, USA.

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关键词： 3T Breast Dual-source Magnetic resonance imaging Parallel imaging

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To investigate the influence of dual-source parallel radiofrequency (RF) excitation on clinical breast MR images. A 3T 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. 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. 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. Copyright © 2014 Elsevier Inc. All rights reserved.

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出版当年[2013]版：

大类 | 4 区医学

小类 | 3 区核医学

最新[2023]版：

大类 | 4 区医学

小类 | 4 区核医学

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第一作者机构： [1]Radiology Department, Beijing Hospital, the Fifth Affiliated College of Peking University, Beijing, China.

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