Multiphase-multistep gadolinium-enhanced MR angiography of the abdominal aorta and runoff vessels

Investigative Radiology
Stefan O SchoenbergT L Chenevert

Abstract

To optimize three-dimensional gadolinium magnetic resonance angiography (3D-Gd-MRA) of the aorta and runoff vessels by addressing fundamentally different requirements for temporal and spatial resolution in a single semiautomated examination. The technique was designed to obtain pure arterial-phase 3D-Gd-MR angiograms with adequate spatial resolution for each station while avoiding incomplete enhancement due to delayed filling vessels as well as venous overlay. During gadolinium-chelate infusion, a breath-held multiphase 3D-Gd-MRA scan was initiated in the aorta by automatic triggering, followed by automatic table movement. The acquisition was tailored to the vessels of interest by tilting of the 3D volumes. A spatial resolution of 1.7 x 1.2 x 0.8 mm in the calves was achieved by use of elliptical-centric k-space reordering. Signal-to-noise ratio was maximized with a 12-element peripheral vascular coil. Twelve patients with peripheral vascular disease were studied. In cases of aortic occlusive disease (n = 2), dissections (n = 3), or aneurysms (n = 4), substantially delayed fill-in of reconstituted arteries, false lumens, or aneurysmal segments occurred, which was detected only on the later 3D-Gd-MRA phase. High-resolution arter...Continue Reading

References

Sep 1, 1996·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·F R KorosecC A Mistretta
Mar 23, 1999·European Radiology·L Van HoeG Marchal
Oct 3, 1999·Journal of Magnetic Resonance Imaging : JMRI·S O SchoenbergM V Knopp
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Citations

May 25, 2006·European Radiology·Henrik J MichaelyStefan O Schoenberg
May 30, 2002·AJR. American Journal of Roentgenology·Yong Yeon JeongTamotsu Kamishima
Jul 23, 2004·Journal of Magnetic Resonance Imaging : JMRI·Deniz BilecenKurt A Jäger
Feb 24, 2009·Seminars in Roentgenology·Hong Lei ZhangMartin R Prince
May 28, 2009·Journal of Magnetic Resonance Imaging : JMRI·Marcel Koenigkam-SantosDiego Martin
Mar 13, 2003·Radiologic Clinics of North America·Vincent B Ho, William R Corse
Mar 12, 2005·Magnetic Resonance Imaging Clinics of North America·Henrik J MichaelyMaximilian F Reiser
Dec 13, 2006·Journal of Magnetic Resonance Imaging : JMRI·Honglei ZhangMartin R Prince
Nov 30, 2005·Topics in Magnetic Resonance Imaging : TMRI·Tim Leiner
Nov 26, 2002·Investigative Radiology·Val M Runge
Nov 1, 2001·Topics in Magnetic Resonance Imaging : TMRI·V M Runge
Apr 19, 2005·Journal of Magnetic Resonance Imaging : JMRI·Michael FenchelStephan Miller
Apr 19, 2005·Journal of Magnetic Resonance Imaging : JMRI·Philippe RobertClaire Corot

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