| Follow-up CT and MR findings of osteoblastic spinal metastatic lesions after stereotactic radiotherapy. | |
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MedLine Citation:
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PMID: 22492470 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: We retrospectively analyzed pre and post-stereotactic radiotherapy CT and MRI findings and volume changes for osteoblastic spinal metastatic lesions. MATERIALS AND METHODS: Of 114 lesions in 72 patients, 11 were osteoblastic. CT and MR images were reviewed to determine tumor volume, CT attenuation, T2 signal intensities, and contrast enhancement. RESULTS: Tumor volume did not change for 10 lesions and increased for 1 lesion. CT attenuation increased for 8 lesions with heterogeneous T2 signal intensities. Of these 8 lesions, 4 had patterns of dark signal foci and the other 4 had patterns of both dark and bright signal foci. T2 signal intensity became heterogenous, with dark and bright foci, for 2 of 3 lesions for which CT attenuation decreased, and normalized for the third lesion. The degree of contrast enhancement decreased for 6 lesions and did not change for 5 lesions. CONCLUSION: There were no changes in volume except for one case. On CT images, sclerotic changes were more common than loss of sclerotic foci. On T2-weighted images, dark signal intensities with or without bright signal foci developed and the degree of enhancement decreased for more than half of the cases. |
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Authors:
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Yoon Joon Hwang |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-12 |
Journal Detail:
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Title: Japanese journal of radiology Volume: - ISSN: 1867-108X ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-11 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101490689 Medline TA: Jpn J Radiol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Radiology, College of Medicine, Inje University Ilsan Paik Hospital, 2240 Daehwa-dong, Ilsanseo-gu, Goyang-si, Gyeonggi-do, 411-706, Republic of Korea, hyj@paik.ac.kr. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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