4D-CTA in neurovascular disease: a review.
AJNR Am J Neuroradiol
; 36(6): 1026-33, 2015 Jun.
Article
em En
| MEDLINE
| ID: mdl-25355812
ABSTRACT
CT angiography is a widely used technique for the noninvasive evaluation of neurovascular pathology. Because CTA is a snapshot of arterial contrast enhancement, information on flow dynamics is limited. Dynamic CTA techniques, also referred to as 4D-CTA, have become available for clinical practice in recent years. This article provides a description of 4D-CTA techniques and a review of the available literature on the application of 4D-CTA for the evaluation of intracranial vascular malformations and hemorrhagic and ischemic stroke. Most of the research performed to date consists of observational cohort studies or descriptive case series. These studies show that intracranial vascular malformations can be adequately depicted and classified by 4D-CTA, with DSA as the reference standard. In ischemic stroke, 4D-CTA better estimates thrombus burden and the presence of collateral vessels than conventional CTA. In intracranial hemorrhage, 4D-CTA improves the detection of the "spot" sign, which represents active ongoing bleeding.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Angiografia Cerebral
/
Transtornos Cerebrovasculares
/
Acidente Vascular Cerebral
/
Tomografia Computadorizada Quadridimensional
Tipo de estudo:
Observational_studies
Limite:
Humans
Idioma:
En
Revista:
AJNR Am J Neuroradiol
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Holanda