Inter- and intra-rater reliability of blood and cerebrospinal fluid flow quantification by phase-contrast MRI.
Inter- and intra-rater reliability of blood and cerebrospinal fluid flow quantification by phase-contrast MRI.
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DOI：
10.1002/jmri.24013
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发表时间：
2013-09
影响因子：
4.4
通讯作者：
Ertl-Wagner, Birgit
中科院分区：
文献类型：
--
作者：
Koerte, Inga;Haberl, Caroline;Schmidt, Michael;Pomschar, Andreas;Lee, Sang;Rapp, Petra;Steffinger, Denise;Tain, Rong-Wen;Alperin, Noam;Ertl-Wagner, Birgit
关键词：
评价通过相位对比MRI定量血液和CSF流速的评估者内和评估者间可靠性。在两个中心使用来自不同制造商的3T扫描仪，采用速度编码电影相位对比对上颈部的血液和CSF流动进行成像。由6名读片员在两个培训水平上分析A中心的6名受试者和B中心的5名受试者的扫描数据。每个数据集以随机顺序分析三次，共33个数据集。计算通过主要颈部动脉、静脉和CSF间隙的面积和流速的主要测量值以及从个体流速导出的次要参数的类内相关系数（ICC）。ICC的管腔面积为0.80至0.96，体积流速为0.97至0.99。衍生的次要措施的ICC范围为0.85至0.99。操作员培训水平导致的差异无统计学显著性。目前，通过基于脉动的自动管腔分割，可以在制造商和用户的技能水平上实现体积流速测量的高评价者内和评价者间可靠性。
To evaluate the intra- and inter-rater reliability of the quantification of blood and CSF flow rates by phase contrast MRI. Blood and CSF flows in the upper cervical region were imaged with velocity-encoded cine-phase contrast using 3T scanners from different manufacturers at two centers. Data of 6 subjects scanned in center A and of 5 subjects in center B were analyzed by six readers at two levels of training. Each data set was analyzed three times in a randomized order for a total of 33 data sets. Intra-class correlation coefficients (ICC) were calculated for the primary measurements of areas and flow rates through the main cervical arteries, veins and the CSF space, and for secondary parameters derived from the individual flow rates. ICC ranged from 0.80 to 0.96 for the lumen area and from 0.97 to 0.99 for the volumetric flow rate. The ICC for the derived secondary measures ranged from 0.85 to 0.99. Differences due to operator level of training were not statistically significant. High intra- and inter-rater reliability of volumetric flow rate measurements is currently achievable across manufacturers and users’ skill levels with a pulsatility based automated lumen segmentation.
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影响因子：
4.1
作者：
Alperin, N;Sivaramakrishnan, A;Lichtor, T
通讯作者：
Lichtor, T
影响因子：
3.3
作者：
Alperin, N;Lee, SH
通讯作者：
Lee, SH
影响因子：
2.5
作者：
Bakker, CJG;Kouwenhoven, M;Mali, WPTM
通讯作者：
Mali, WPTM
影响因子：
5.4
作者：
Cheng, Victor Y;Nakazato, Ryo;Berman, Daniel S
通讯作者：
Berman, Daniel S
影响因子：
5.9
作者：
Ertl-Wagner, Birgit B.;Blume, Jeffrey D.;Schmalfuss, Ilona M.
通讯作者：
Schmalfuss, Ilona M.