Comparison of spinal anatomy between 3-Tesla MRI and CT-myelography under healthy and pathological conditions
Comparison of spinal anatomy between 3-Tesla MRI and CT-myelography under healthy and pathological conditions
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DOI：
10.1007/s00276-009-0601-0
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发表时间：
2010-07-01
影响因子：
1.4
通讯作者：
Foerschler, Annette
中科院分区：
文献类型：
--
作者：
Grams, Astrid Ellen;Gempt, Jens;Foerschler, Annette
在许多中心，MRI和CT脊髓造影术都被用于退行性脊柱疾病的治疗计划。越来越多的中心购买了3-特斯拉核磁共振扫描仪，其中一些伪影比1.5特斯拉的更明显，这导致图像评估困难。本研究的目的是比较3-特斯拉MRI和CT-脊髓造影的脊柱生理和病理解剖，并回顾现有的影像标准。对47个常用的脊柱节段的3-特斯拉T2加权序列和CT-脊髓造影术进行回顾性评价。测量了椎管、神经孔、脊髓和椎间盘突出的直径。与CT-M相比，使用MRI序列椎管收紧10%，而在MRI上椎孔直径收紧19.7%。这在狭窄的节段比在健康的节段更明显。脊髓大小和椎间盘突出的大小在MRI和CT-脊髓造影术中没有显著差异。与3-Tesla MRI相比，CT-脊髓造影术的主要优势是有关骨结构的可靠信息。脊髓或椎间盘突出等软组织在直径方面与两种方式显示相同。
In many centres both MRI and CT-myelography are performed for treatment planning of degenerative spine disease. More and more centres acquire 3-Tesla MRI scanners in which some artefacts, which lead to difficulties in image evaluation, are more pronounced than at 1.5 Tesla. Aim of this study was to compare spinal physiological and pathological anatomy between 3-Tesla MRI and CT-myelography and to review current imaging standards.In 47 spinal segments commonly used 3-Tesla T2-weighted sequences and CT-myelography studies were evaluated retrospectively. Spinal canal, neural foraminal, spinal cord and disc protrusion diameters were measured.The spinal canal was found to be 10% tighter with the utilized MRI sequences, in comparison to CT-M and foraminal diameters were found to be 19.7% tighter in MRI. This was more pronounced in narrowed than in healthy segments. Spinal cord size and size of disc protrusions displayed no significant difference between MRI and CT-myelography.The main advantage of CT-myelography, in comparison to 3-Tesla MRI, is the reliable information about the bony structures. Soft tissues like the spinal cord or disc protrusions were visualised equivalently with both modalities concerning diameters.