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3D time of flight MR angiography: aquisition with small field of view and low phase encodes
- Source :
- Europe PubMed Central
- Publication Year :
- 2003
- Publisher :
- Elsevier BV, 2003.
-
Abstract
- The aim of the study was to evaluate and compare the image quality of the 3D TOF MRA acquired with a small FOV and low phase encodes with those MR angiographic images acquired with standard pulse sequence parameters. Twenty patients who were referred to our institution for MR imaging of the brain and strictly satisfied the selection criteria were included in this study. Apart from the routine protocol for MR imaging of the brain, 3D TOF MRA of the circle of Willis with a small FOV and a standard FOV were performed. The image quality of all MRA was evaluated by two independent observers who were blind to the pulse sequence parameters. From the standard FOV MRA, 22.5, 12.5, and 5% of the patients were graded as mild, moderate, and severe stenosis of the internal carotid artery, respectively. On the contrary, no apparent stenosis was observed from the small FOV MRA with low phase encodes. Regarding the reduction in MR artifacts and acquisition time achieved with the small FOV 3D TOF MRA with low phase encodes, this might be a useful MR angiographic technique to be used in routine clinical practice.
- Subjects :
- Adult
Male
medicine.medical_specialty
Image quality
Phase (waves)
Health Informatics
Time of flight mr angiography
Magnetic resonance angiography
Imaging, Three-Dimensional
medicine.artery
medicine
Humans
Radiology, Nuclear Medicine and imaging
Small field of view
Radiological and Ultrasound Technology
medicine.diagnostic_test
business.industry
equipment and supplies
medicine.disease
Computer Graphics and Computer-Aided Design
Stenosis
Cerebrovascular Circulation
Female
Computer Vision and Pattern Recognition
Radiology
Internal carotid artery
business
Magnetic Resonance Angiography
Circle of Willis
Subjects
Details
- ISSN :
- 08956111
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Computerized Medical Imaging and Graphics
- Accession number :
- edsair.doi.dedup.....28fd3920952408dd23ba6d5ad75fd795