The value of the three-dimensional angiotomography in diagnosis from the intracranial aneurysms, when compared at the standard method ( digital subtraction angiography ): systematic review

THESES

The value of the three-dimensional angiotomography in diagnosis from the intracranial aneurysms, when compared at the standard method ( digital subtraction angiography ): systematic review (Abstract)^*. Dissertation. São Paulo, 2004

Guilherme Cabral de Andrade

^{Correspondence}

To evaluate the sensitivity and specificity of tridimensional computerized tomography angiography (3DCTA) in the detection of intracranial aneurysms, correlating with the digital subtraction angiography (DSA) and to determine the smaller size of the intracranial aneurysms diagnosed with the 3DTCA. The tridimensional computerized tomography angiography has utilized on the intracranial aneurysms diagnosis.

A comprehensive, computer-based, online search of the world literature on the 3 DTCA was performed (MEDLINE, LILACS, EMBASE, COCHRANE LIBRARY). All probable terms for 3DTCA were determined from initial experience with the literature on the topic. These included "CT angiography", "computerized tomographic angiography", "computerized tomography angiography", "computer tomography angiography", "computer tomographic angiography", "three dimensional computed angiography"; the relevant terms used were "subarachnoid hemorrhage" e "aneurysm(s)". The initial criteria for inclusion in the systematic review were study design and examination methodology, image review process and presentation of result data.

The results demonstrated that the 26 studies identified by using this search, with total of the 1.483 intracranial aneurysms diagnosed through the digital subtraction angiography and 1.391 (94%) of these diagnosed at the 3DCTA and the smaller size was 2mm. The intracavernous carotid aneurysms were the majority of the false negative results.

In conclusion, the sensitivity of the 3DCTA was the 95% as 100% by 63% these studies and the specificity was the 95% as 100% by 50% these studies. The smaller size of the intracranial aneurysms diagnosed was 2 mm, with the false negative cases more frequents were the intracavernous carotid aneurysms(25%) because of the proximity with bone structures; the middle cerebral artery aneurysms (19%) because of the presence the loops and posterior communicating artery aneurysms because of the infundibular dilatation.

Key words: cerebral aneurysms, angiotomography.

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*

O valor da angiotomografia tridimensional no diagnóstico dos aneurismas intracranianos quando comparado ao método standard (angiografia digital convencional): revisão sistemática da literatura.(Resumo). Dissertação de Mestrado, Universidade Federal de São Paulo, UNIFESP / EPM (Área: Neurocirurgia). Orientador: Fernando Menezes Braga.

Publication Dates

• Publication in this collection
  13 Apr 2005
• Date of issue
  Mar 2005