Multiple flip angle MRA: data acquisition and post-processing

Author

Mohamed, F.B. ; Faro, S. ; Vinitski ; Ortega, H.V. ; Iwanaga, T.

Author_Institution

Dept. of Radiol., Thomas Jefferson Univ. Hospital, Philadelphia, PA, USA

Volume

1

fYear

1995

fDate

20-25 Sep 1995

Firstpage

455

Abstract

We have implemented a MRA (magnetic resonance angiography) data acquisition and post processing method to improve the assessment of the carotid artery bifurcation needed for correct diagnosis. Axial high resolution MRA images were acquired using 3D time-of-flight (TOF) MRA technique with a multiple flip angle. Composite MRA images of these data sets with at least two different flip angles were created using a MIP (maximum intensity projection) algorithm and formatted into sagittal angiographic projections. Next, color coded MRA images were created using a MIP segmentation algorithm. The resulting images demonstrated improved image quality of the carotid bifurcation. These post-processed MRA images also demonstrate significant increase in the SNR within the carotid bifurcation (p<0.05)

Keywords

biomedical NMR; data acquisition; image coding; image colour analysis; image resolution; image segmentation; medical image processing; signal detection; 3D time-of-flight MRA technique; MIP segmentation algorithm; SNR; axial high resolution MRA images; carotid artery bifurcation; color coded MRA images; correct diagnosis; data acquisition; data sets; image quality; magnetic resonance angiography; maximum intensity projection algorithm; multiple flip angle MRA; post-processing; sagittal angiographic projections; Angiography; Bifurcation; Carotid arteries; Data acquisition; Image quality; Image segmentation; Magnetic resonance; Protocols; Radiology; Tellurium;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.575197

Filename

575197