机构：[1]Department of Medical Imaging, The First Affiliated Hospital, Kunming Medical University, Kunming China 650032医技科室医学影像中心昆明医科大学附属第一医院[2]Department of Oncologic Imaging, National Cancer Center, Singapore 169610[3]Duke-NUS Graduate Medical School, Singapore 169857
The double-angle method (DAM) is commonly used as a reference standard in radiofrequency field (B-1) mapping studies. This study explored two aspects of DAM: (i) use of small flip angle pairs to reduce the repetition time (TR) needed for adequate longitudinal relaxation (T-1); and (ii) the effect of using different flip angle ratios for B-1 mapping. Results of phantom studies show that B-1 correction using small flip angle pairs <= 60 degrees with TR = 5000 ms can allow for accurate estimation of T-1 up to about 1500 ms; and that increasing the ratio of the two flip angles used for B-1 correction resulted in more accurate estimation of T-1. These modifications allow 3-dimensional (3D) B-1 mapping to be consistently performed with the same 3D spoiled gradient echo sequence used for T-1 mapping in dynamic contrast-enhanced MRI.
语种：
外文
被引次数：
WOS：
PubmedID：
中科院(CAS)分区：
出版当年[2019]版：
大类|3 区医学
小类|3 区工程：生物医学3 区核医学
最新[2023]版：
大类|3 区医学
小类|3 区工程：生物医学3 区核医学
JCR分区：
出版当年[2018]版：
Q2ENGINEERING, BIOMEDICALQ2RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
最新[2023]版：
Q1RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGINGQ2ENGINEERING, BIOMEDICAL
第一作者机构：[1]Department of Medical Imaging, The First Affiliated Hospital, Kunming Medical University, Kunming China 650032
通讯作者：
推荐引用方式(GB/T 7714)：
Li Z. F.,Zhao W.,Qi T. F.,et al.A simple B-1 correction method for dynamic contrast-enhanced MRI[J].PHYSICS IN MEDICINE AND BIOLOGY.2018,63(16):doi:10.1088/1361-6560/aad519.
APA：
Li, Z. F.,Zhao, W.,Qi, T. F.,Gao, C.,Gu, Q....&Koh, T. S..(2018).A simple B-1 correction method for dynamic contrast-enhanced MRI.PHYSICS IN MEDICINE AND BIOLOGY,63,(16)
MLA：
Li, Z. F.,et al."A simple B-1 correction method for dynamic contrast-enhanced MRI".PHYSICS IN MEDICINE AND BIOLOGY 63..16(2018)
