Characterisation of Lesions after Stereotactic Radiosurgery for Brain Metastases: Impact of Delayed Contrast Magnetic Resonance Imaging

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• 作者：S. Wagner<sup>&lowast ; sup><sup> ; sup><sup>&dagger ; sup><sup> ; sup><sup>sabine-m-wagner@gmx.desup> ; H. Gufler<sup>&Dagger ; sup> ; G. Eichner<sup>&sect ; sup> ; H. Lanfermann<sup>&dagger ; sup><sup> ; sup><sup>¶ ; sup>
• 关键词：Brain metastases ; delayed contrast MRI ; gadolinium-DTPA ; MRI ; radionecrosis ; stereotactic radiosurgery
• 刊名：Clinical Oncology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：29
• 期：3
• 页码：143-150
• 全文大小：1056 K
• 卷排序：29

文摘

After SRS, radiation injuries and malignancies have a statistically different signal-intensity time course on delayed MRI. By measuring signal-intensity at 15 and 55 min after administering Gd-DTPA, all lesions can be correctly categorised. An increase in signal-intensity indicates a radiation injury, whereas a marked decrease indicates malignancy.