多体素2D~1H-MRSI-解剖叠加伪彩图在胶质瘤恶性程度分级中的应用

目的 探讨多体素2D1~H-MRSI(proton magnetic resonance Spectroscopy imaging,1~H-MRSI)-解剖叠加伪彩图在星形细胞胶质瘤恶性程度分级中的价值.方法 对经手术切除病理证实的58例星形细胞胶质瘤的术前多体素2D1~H-MRS检查资料,利用机器自带的Functool(2)spectroscopy-2D Brain分析软件,获得1~H-MRSI-解剖叠加伪彩图,包括Cho、Cr、NAA、Lip或Lac代谢-解剖叠加伪彩图以及Cho/NAA和Cho/Cr相对值分布-解剖叠加伪彩图,观测这些代谢物以及相对值在瘤体内的分布情况,依据上述相对值分布-解剖叠加伪彩图,在其相对值分布最大区分别测定(Cho/NAA)_(max)和(Cho/Cr)_(max).结果 上述代谢物以及相对值在瘤体内分布均呈现出异质性,其中Cho/NAA、Cho/Cr以及Cho在瘤体内呈非均匀性升高,相反NAA和Cr在瘤体内呈非均匀性减低,且这种异质性在恶性程度越高胶质瘤中越明显.低度恶性与高度恶性胶质瘤的(Cho/NAA)_(max)和(Cho/Cr)_(max)比值存在显著筹异性(P＜0.01);胶质瘤的(Cho/NAA)_(max)、(Cho/Cr)_(max)相对值与病理级别相关,尤以(Cho/NAA)_(max)相对值反映胶质瘤级别较稳定(相关系数rs分别为0.923、0.802).结论 多体素2D1H-MRSI-解刮叠加伪彩图能间接反映胶质瘤内部肿瘤组织的异质性,依据其所测量(Cho/NAA)_(max)、(Cho/Cr)_(max)在胶质瘤恶性程度评估中具有重要临床参考价值.

Multivoxel 2D ~1H-MRSI overlay anatomy imaging in grading malignancy of gliomas

Objective To explore the clinical value of multivoxel 2D Proton magnetic resonance spectroscopy imaging (1H-MRSI) overlay anatomy imaging in grading the malignancy of gliomas. Methods Totally 58 patients with pathologically verified gliomas were examined before operations using conventional MRI and multi-voxel 2D 1H-MRS. An attached software package Functool (2) spectroscopy-2D Brain was used to gain the 1H-MRSI overlay anatomy imaging, including the metabolic imaging+anatomy imaging (MIDI) color overplay m...