Abstract
OBJECTIVE: To identify the pulsatile small vascular lesion by echocardiogram (ECG)-gated computed tomographic (CT) and magnetic resonance (MR) angiographies. METHODS: Seven patients who exhibited small evagination at the cerebral artery bifurcations on 3-dimensional (3D) time-of-flight MR angiogram were enrolled. They were examined by conventional/ECG-gated CT angiogram (n = 6) and ECG-gated MR angiogram (n = 5). Echocardiogram-gated MR angiogram was performed with 3D time of flight, triggered after each time window. From ECG-gated CT and MR angiograms, consecutive 10-phase images within a single cardiac cycle were obtained. RESULTS: The pulsatile change of evagination was demonstrated on both ECG-gated CT angiogram (5 of 6 patients) and ECG-gated MR angiogram (all 5 patients). Flattening of the evagination during the diastolic phase was observed in 4 of 6 ECG-gated CT angiograms and 3 of 5 ECG-gated MR angiograms. Of note was a patient with a tiny evagination (
Original language | English (US) |
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Pages (from-to) | 842-846 |
Number of pages | 5 |
Journal | Journal of Computer Assisted Tomography |
Volume | 34 |
Issue number | 6 |
DOIs | |
State | Published - Nov 2010 |
Externally published | Yes |
Keywords
- aneurysm
- angiography
- brain
- cerebrovascular disorders
- magnetic resonance imaging
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging