Functional Analysis of the Vertebral Column Based on MR and Direct Volume Rendering
Functional Analysis of the Vertebral Column Based on MR and Direct Volume Rendering
复制标题
基于MR和直接体绘制的脊柱功能分析
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
T. Ertl
中科院分区：
文献类型：
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作者：
P. Hastreiter;C. Rezk;K. Eberhardt;B. Tomandl;T. Ertl
脊柱退行性疾病主要与椎间盘错位和脊髓变形相结合。对于严重的椎管狭窄和椎间盘突出的调查，X线脊髓造影术是必要的，提供重要的功能信息的运动的脊椎节段。为了避免这种耗时的过程和注射造影剂，我们介绍了一种非侵入性的方法，使用直接容积渲染的一种新的T2加权MR序列。它提供了极端脊柱病理的有意义的表现。最重要的是，使用直接应用于MR扫描仪内的可调节床获得基本功能信息。由于灰度值的分布，我们建议使用快速的过滤操作和体积增长序列的脊柱的粗分割。进一步，细节描绘隐含使用交互式调整的传递函数。因此，CSF、脊神经根和椎骨清晰可见。此外，我们提出了一种体积测量的方法，提供CSF体积的功能依赖性。所提出的非侵入性策略提供了对空间和功能信息的全面理解，包括脊柱不稳定性，从而可能进一步减少X线脊髓造影的需要。
Degenerative diseases of the vertebral column are mainly combined with misalignments of the intervertebral discs and deformations of the spinal cord. For the investigation of severe spinal stenosis and herniated intervertebral discs x-ray myelography is required providing important functional information about the motion of vertebral segments. To avoid this time-consuming procedure and the injection of contrast agent, we introduce a non-invasive approach using direct volume rendering of a novel T2 weighted MR sequence. It provides meaningful representations of extreme spinal pathologies. Above all, the essential functional information is obtained using an adjustable couch directly applied within the MR scanner. Due to the distribution of the grey values, we suggest a coarse segmentation of the vertebral column using a fast sequence of filtering operations and volume growing. Further on, details are delineated implicitly using interactive adjustment of transfer functions. Thereby, the CSF, the roots of the spinal nerves and the vertebrae are clearly visible. Additionally, we propose an approach for volumetric measurement providing the functional dependence of the CSF volume. The presented non-invasive strategy gives a comprehensive understanding of spatial and functional information including spinal instability and may thus lead to further reduce the need of x-ray myelography.
CT 和 MR 图像的透视体积渲染：内窥镜成像的应用。
DOI：
10.1148/radiology.199.2.8668772
发表时间：
1996
期刊：
Radiology.
影响因子：
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作者：
Rubin,GD;Beaulieu,CF;Argiro,V;Ringl,H;Norbash,AM;Feller,JF;Dake,MD;Jeffrey,RB;Napel,S
通讯作者：
Napel,S