Shear Stiffness of 4 Common Intracranial Tumors Measured Using MR Elastography: Comparison with Intraoperative Consistency Grading

• DOI: 10.3174/ajnr.a4832
• Publication Date: 2016-06-23T22:13:04Z
• Authors: N. Sakai; Y. Takehara; S. Yamashita; N. Ohishi; H. Kawaji; T. Sameshima; S. Baba; H. Sakahara; H. Namba
• Keywords: Grading (engineering)

<h3>BACKGROUND AND PURPOSE:</h3> The stiffness of intracranial tumors affects the outcome tumor removal. We evaluated 4 common by using MR elastography and tested whether had potential to discriminate firm preoperatively. <h3>MATERIALS METHODS:</h3> Thirty-four patients with meningiomas, pituitary adenomas, vestibular schwannomas, gliomas scheduled for resection were recruited elastography. On elastogram, mean maximum shear stiffnesses measured placing an ROI on tumor. Blinded findings, surgeons conducted qualitative intraoperative assessment consistency a 5-point scale. Histopathologic diagnosis was confirmed resected specimens. compared histopathologic subtypes, graded surgeons. <h3>RESULTS:</h3> following: 1.9 ± 0.8 kPa 3.4 1.5 1.2 0.3 1.8 0.5 2.0 0.4 2.7 0.2 gliomas. meningiomas higher than those adenomas (<i>P</i> &lt; .05). significantly correlated surgeon9s 5 that nonfirm <h3>CONCLUSIONS:</h3> could evaluate basis their physical property stiffness. may be useful in discriminating