Targeted ROTational magnetic resonance angiography (TROTA).
An MR angiographic method is presented in which a rotating 2D slice is centered on and targets a region or vessel of interest. Collecting a series of slices rotating about the center of the targeted region yields projection data sufficient for the calculation of 3D volumetric data of the region using conventional backprojection reconstruction techniques. These volumetric data depict the internal structure of the vessel and can be processed and displayed with multiplanar reformation, maximum intensity projections, and 3D rendering algorithms. The rotational angiographic acquisition preserves the high temporal resolution of 2D-MR digital subtraction angiography with the added benefit of 3D reformatting and display. The method is explained in detail and results from phantom and human experiments are presented.
Goldfarb
James W
JW
Department of Research and Education, Saint Francis Hospital, Roslyn, New York 11576, and Program in Biomedical Engineering, SUNY Stony Brook, NY, USA. James.Goldfarb@chsli.org
D000368:Aged; D000465:Algorithms; D015901:Angiography, Digital Subtraction / Q000379:methods; D002339:Carotid Arteries / Q000033:anatomy & histology; D017536:Carotid Artery, Common / Q000033:anatomy & histology; D003287:Contrast Media; D005260:Female; D005583:Fourier Analysis; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007091:Image Processing, Computer-Assisted / Q000379:methods; D021621:Imaging, Three-Dimensional / Q000379:methods; D018810:Magnetic Resonance Angiography / Q000379:methods*; D019047:Phantoms, Imaging; D012399:Rotation; D013997:Time Factors
D003287:Contrast Media; C064925:gadodiamide; D005682:Gadolinium; D019786:Gadolinium DTPA