The SRI24 multichannel atlas of normal adult human brain structure.
The SRI24 multichannel atlas of normal adult human brain structure.
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DOI：
10.1002/hbm.20906
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发表时间：
2010-05
影响因子：
4.8
通讯作者：
Pfefferbaum, Adolf
中科院分区：
文献类型：
--
作者：
Rohlfing, Torsten;Zahr, Natalie M.;Sullivan, Edith V.;Pfefferbaum, Adolf
关键词：
本文介绍了SRI24图谱，一个新的标准参考系统的正常人脑解剖，这是使用无模板的人口注册的高分辨率磁共振图像采集在3T在一组24名正常对照组。图谱包括解剖通道（T1、T2和质子密度加权）、扩散相关通道（分数各向异性、平均扩散率、纵向扩散率、平均扩散加权图像）、组织通道（CSF概率、灰质概率、白色物质概率、组织标签）和两个皮质包裹图。SRI 24图谱可实现多通道图谱与受试者图像配准。它是独一无二的通用，因为它同样适用于两个根本不同的图集应用：标签传播和空间归一化。与其他可用图谱相比，SRI 24图谱的清晰度增加，从而实现了本文使用DTI纤维跟踪证明的标签传播。空间标准化，本文使用来自10年前的组比较研究的数据证明，是由其无偏的平均人口形状属性。对于传播和归一化，我们还报告了与其他七个已发表的图谱：Colin27，MNI152，ICBM 452（warp5和air12），和LPBA40（SPM 5，FLIRT，AIR）的定量比较结果。我们的研究结果表明，SRI 24图谱，虽然基于3T MR数据，允许同样准确的空间归一化的数据采集在1.5T的比较图谱，所有这些都是基于1.5T的数据。此外，SRI 24图谱与比较图谱一样适用于标签传播，并且足够详细，可以直接在图谱中为此目的描绘解剖结构。
This paper describes the SRI24 atlas, a new standard reference system of normal human brain anatomy, that was created using template-free population registration of high-resolution magnetic resonance images acquired at 3T in a group of 24 normal control subjects. The atlas comprises anatomical channels (T1, T2, and proton density weighted), diffusion-related channels (fractional anisotropy, mean diffusivity, longitudinal diffusivity, mean diffusion-weighted image), tissue channels (CSF probability, gray matter probability, white matter probability, tissue labels), and two cortical parcellation maps. The SRI24 atlas enables multi-channel atlas-to-subject image registration. It is uniquely versatile in that it is equally suited for the two fundamentally different atlas applications: label propagation and spatial normalization. Label propagation, herein demonstrated using DTI fiber tracking, is enabled by the increased sharpness of the SRI24 atlas compared with other available atlases. Spatial normalization, herein demonstrated using data from a young-old group comparison study, is enabled by its unbiased average population shape property. For both propagation and normalization, we also report the results of quantitative comparisons with seven other published atlases: Colin27, MNI152, ICBM452 (warp5 and air12), and LPBA40 (SPM5, FLIRT, AIR). Our results suggest that the SRI24 atlas, although based on 3T MR data, allows equally accurate spatial normalization of data acquired at 1.5T as the comparison atlases, all of which are based on 1.5T data. Furthermore, the SRI24 atlas is as suitable for label propagation as the comparison atlases and detailed enough to allow delineation of anatomical structures for this purpose directly in the atlas.
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