Abstract:
:In oral carcinomas close to the mandible, tumour invasion of the mandible is important in selecting segmental or marginal resection. Imaging may play a role in assessing tumour invasion. This study compares the accuracy of panoramic X-ray, CT and MR imaging in assessing invasion of the mandible in 29 patients. At histopathology, 6 patients had mandible erosion, 12 had invasion and 11 had an intact mandible. Magnetic resonance imaging had the highest sensitivity (94%), but a low specificity (73%), with 3 of 11 intact mandibles interpreted as positive. Furthermore, MR often overestimated the extent of tumour invasion. On the other hand, CT and panoramic X-ray had a lower sensitivity (64 and 63%, respectively) and a higher specificity (89 and 90%, respectively). Computed tomography (using 5-mm sections) and panoramic X-ray had a similar accuracy, and negative findings do not exclude invasion. Magnetic resonance imaging was the most sensitive technique but had more false positives and frequently overestimated the extent of tumour invasion. Because none of the radiological techniques are accurate enough, clinical examination seems at present to remain the most important modality in deciding between segmental and marginal resection. Tumour invasion at CT or panoramic X-ray is a strong argument for a segmental resection.
journal_name
Eur Radioljournal_title
European radiologyauthors
van den Brekel MW,Runne RW,Smeele LE,Tiwari RM,Snow GB,Castelijns JAdoi
10.1007/s003300050585subject
Has Abstractpub_date
1998-01-01 00:00:00pages
1552-7issue
9eissn
0938-7994issn
1432-1084journal_volume
8pub_type
杂志文章abstract:OBJECTIVES:To assess the relative diagnostic utility of low- and standard-dose computed tomography (CT)-guided lung biopsy. METHODS:In this single-center, single-blind, prospective, randomized controlled trial, patients were enrolled between November 2016 and June 2017. Enrolled study participants were randomly select...
journal_title:European radiology
pub_type: 杂志文章
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更新日期:2020-03-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1007/BF00181147
更新日期:1996-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2010-04-01 00:00:00
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更新日期:2012-07-01 00:00:00
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更新日期:2016-06-01 00:00:00
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更新日期:2013-05-01 00:00:00
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更新日期:2019-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:1999-01-01 00:00:00
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更新日期:2021-01-16 00:00:00
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更新日期:2009-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:1999-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2004-11-01 00:00:00
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更新日期:1997-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2007-12-01 00:00:00
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更新日期:2016-09-01 00:00:00
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更新日期:2010-05-01 00:00:00
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更新日期:2016-04-01 00:00:00
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更新日期:2013-01-01 00:00:00
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更新日期:2017-06-01 00:00:00
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更新日期:2017-02-01 00:00:00
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journal_title:European radiology
pub_type: 杂志文章
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更新日期:2003-02-01 00:00:00