[Reconstruction methods in postprocessing of CT- and MR-angiography of the aorta].
[Reconstruction methods in postprocessing of CT- and MR-angiography of the aorta].
复制标题
[主动脉CT和MR血管造影后处理的重建方法]。
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
M. Reiser
中科院分区：
文献类型：
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作者：
A. Huber;M. Matzko;B. Wintersperger;M. Reiser
该研究的目的是探讨 2D 和 3D 重建在 CT 和 MRI 检查主动脉中的应用。对使用对比增强 CTA 获取的 5 个数据集（包括 2D MPR 重建、3D MIP 重建和 3D 体绘制重建）和使用对比增强 MRA 获取的 5 个数据集进行后处理。对重建和源图像的管腔直径、动脉瘤长度和夹层检测进行了评估。在源图像上正确识别了主动脉的动脉瘤和夹层。 2D MPR 重建和源图像可实现清晰、轻松的图像分析，包括具有高信号强度或周围组织密度以及复杂解剖结构的病例。即使血管方向相对于源图像并不完全在平面内或穿过平面，也可以通过 2D MPR 重建正确确定病理结果的直径和长度。 MIP 重建适用于具有高 C/N 比的对比增强 MRA 数据集，体绘制重建适用于对比增强 CTA 数据集，其中钙化和骨骼也具有高密度。对于大体积的 3D 可视化，MIP 重建分别是 MRA 和 CTA 体绘制重建的首选方法。此外，可能需要 2D MPR 来确定病理结果的直径和长度。
The aim of the study was to investigate the use of 2D and 3D reconstructions in examinations of the aorta with CT and MRI. Postprocessing of 5 data sets including 2D MPR reconstructions, 3D MIP reconstructions and 3D volume rendering reconstructions acquired with contrast enhanced CTA and 5 data sets acquired with contrast enhanced MRA were performed. The luminal diameter, the length of the aneurysm and the detection of dissection was assessed for the reconstructions and the source images. Aneurysms and dissections of the aorta were correctly identified on source images. 2D MPR reconstructions and source images allow for a clear and easy image analysis including cases with high signal intensity or density of surrounding tissue and complex anatomical structures. The diameter and length of pathological findings can be determined correctly wit 2D MPR reconstructions, even when the vessel orientation is not exactly inplane or throughplane in relation to the source images. MIP reconstructions are suitable for contrast enhanced MRA data sets with high C/N ratio and volume rendering reconstructions are suitable for contrast enhanced CTA data sets, where calcifications and bone have also high density. For 3D visualization of large volumes MIP reconstructions are the method of choice for MRA and volume rendering reconstructions for CTA, respectively. In addition, 2D MPR can be necessary to determine the diameter and length of pathological findings.