Abstract:
PURPOSE:To discuss the sensitivity of three-dimensional time-of-flight (3D TOF) magnetic resonance angiography (MRA) for detecting aneurysms causing third cranial nerve palsy and to propose guidelines for the use of MRA in the evaluation of patients with different clinical presentations of oculomotor nerve palsy. METHODS:From a review of the scientific literature, we determined the proportion of aneurysms of various size that cause third nerve palsy, the sensitivity of MRA in detecting aneurysms of these size classes, and the relationship of aneurysmal size to rupture. RESULTS:The data disclose that properly performed and interpreted 3D TOF MRA will overlook only 1.5% of aneurysms producing third cranial nerve palsy that will, if untreated, rupture during the subsequent 8 years. CONCLUSIONS:Magnetic resonance angiography plays an important diagnostic role in the evaluation of patients with isolated third cranial nerve palsy. However, because of the potentially drastic consequences of overlooking an aneurysm, MRA should be the definitive screening test only among patients with a relatively low likelihood of harboring an aneurysm or a relatively high likelihood of suffering a complication from catheter angiography.
journal_name
Am J Ophthalmoljournal_title
American journal of ophthalmologyauthors
Jacobson DM,Trobe JDdoi
10.1016/s0002-9394(99)00107-5subject
Has Abstractpub_date
1999-07-01 00:00:00pages
94-6issue
1eissn
0002-9394issn
1879-1891pii
S0002939499001075journal_volume
128pub_type
杂志文章,评审abstract::Posterior scleritis was diagnosed in four adolescent boys. These patients represented a distinct subgroup of patients with posterior scleritis that differed from the adult variant by gender, lack of systemic disease, and absence of the associated ocular findings often seen in the adult variant of the disorder. The fou...
journal_title:American journal of ophthalmology
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journal_title:American journal of ophthalmology
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journal_title:American journal of ophthalmology
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journal_title:American journal of ophthalmology
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journal_title:American journal of ophthalmology
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journal_title:American journal of ophthalmology
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journal_title:American journal of ophthalmology
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pub_type: 临床试验,杂志文章
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journal_title:American journal of ophthalmology
pub_type: 杂志文章
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更新日期:2002-03-01 00:00:00
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