Usefulness of Segmented TrueFISP Cardiac Pulse Sequence in Evaluation of Congenital and Acquired Adult Cardiac Abnormalities
F. S. Pereles1,
V. Kapoor1,
J. C. Carr1,
O. P. Simonetti2,
E. A. Krupinski3,
V. Baskaran1 and
J. P. Finn1
1
Department of Radiology, Northwestern University Medical School, 676 N. St.
Clair, Ste. 800, Chicago, IL 60611.
2
Siemens Medical Systems, 448 E. Ontario, Ste. 700, Chicago, IL 60611.
3
University of Arizona Health Sciences Center, 1609 N. Warren, Bldg. 112,
Tucson, AZ 85724.
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Fig. 1A. —Technique for obtaining valve plane images depicted in images
of 66-year-old female patient. Horizontal long-axis trueFISP MR image (TR/TE,
3.0/1.6) shows image orientation through aortic outflow tract.
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Fig. 1B. —Technique for obtaining valve plane images depicted in images
of 66-year-old female patient. Outflow tract image shows image orientation
through aortic valve plane.
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Fig. 1C. —Technique for obtaining valve plane images depicted in images
of 66-year-old female patient. Resultant aortic valve plane image.
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Fig. 2A. —43-year-old man with normal aortic and mitral valve
structure. LA = left atrium, LV = left ventricle. Horizontal long-axis
trueFISP MR image (TR/TE, 3.0/1.6) clearly reveals anterior and posterior
leaflets (short arrows) of mitral valve, left atrium, left ventricle,
and aortic outflow tract (long arrow).
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Fig. 2B. —43-year-old man with normal aortic and mitral valve
structure. LA = left atrium, LV = left ventricle. Horizontal long-axis FLASH
(fast low-angle shot) MR image (8.0/4.0) shows poor blood—myocardium
contrast and barely visible aortic and mitral valve leaflets.
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Fig. 2C. —43-year-old man with normal aortic and mitral valve
structure. LA = left atrium, LV = left ventricle. Horizontal long-axis
trueFISP MR image (3.0/1.6) clearly reveals closed mitral valve (short
arrows), left atrium, left ventricle, and aortic outflow tract (long
arrow).
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Fig. 2D. —43-year-old man with normal aortic and mitral valve
structure. LA = left atrium, LV = left ventricle. Horizontal long-axis FLASH
MR image (8.0/4.0) shows poor blood—myocardium contrast and barely
visible aortic and mitral valves.
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Fig. 3A. —69-year-old man with circumflex and right main coronary
artery aneurysms. Axial trueFISP MR image (TR/TE, 3.0/1.6) shows circumflex
coronary artery aneurysm (thin arrow) and right main coronary artery
aneurysm (thick arrow). Incidentally noted hepatic cyst is visualized
on trueFISP image but not seen in corresponding FLASH (fast low-angle shot)
image (B).
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Fig. 3B. —69-year-old man with circumflex and right main coronary
artery aneurysms. Axial FLASH MR image (8.0/4.0) shows circumflex coronary
artery aneurysm (thin arrow) and right main coronary artery aneurysm
(thick arrow) seen retrospectively.
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Fig. 4. —80-year-old woman with atrial septal defect with septal
aneurysm. Axial TrueFISP MR image (TR/TE, 3.0/1.6) shows septal aneurysm
(arrow) bowing from right atrium (RA) to left atrium (LA).
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Fig. 5A. —25-year-old man with aortic regurgitation. Axial trueFISP MR
image (TR/TE, 3.0/1.6) reveals aortic regurgitation as flow void
(arrows) in left ventricle.
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Fig. 5B. —25-year-old man with aortic regurgitation. On axial FLASH
(flash low-angle shot) MR image (8.0/4.0), aortic regurgitation is not as
clearly seen as on trueFISP image (A).
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Fig. 6A. —40-year-old man with normal aortic valve structure. Aortic
valve plane trueFISP MR image (TR/TE, 3.0/1.6) shows normal aortic valve
(arrows). Note poor blood—valve leaflet contrast obtained with
trueFISP imaging.
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Fig. 6B. —40-year-old man with normal aortic valve structure. Aortic
valve plane FLASH (fast low-angle shot) MR image (TR/TE, 8.0/4.0) shows normal
aortic valve (arrows) and good valve architecture definition and
valve orifice contrast.
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Fig. 7A. —41-year-old man with partially fused anterior commissure of
aortic valve. Aortic valve plane trueFISP MR image (TR/TE, 3.0/1.6) shows
apparently normal aortic valve architecture because of poor
orifice—valve leaflet contrast in trueFISP.
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Fig. 7B. —41-year-old man with partially fused anterior commissure of
aortic valve. Aortic valve plane FLASH (fast low-angle shot) MR image
(8.0/4.0) reveals partially fused anterior commissure (arrows) with
good valve architecture definition and valve orifice (O) contrast.
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Fig. 8A. —67-year-old woman with bicuspid aortic valve. In aortic valve
plane trueFISP MR image (TR/TE, 3.0/1.6), bicuspid aortic valve
(arrows) is not clearly seen because of poor orifice—valve
leaflet contrast.
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Fig. 8B. —67-year-old woman with bicuspid aortic valve. Aortic valve
plane FLASH (fast low-angle shot) MR image (8.0/4.0) of bicuspid aortic valve
(arrows) shows excellent valve architecture definition and valve
orifice (O) contrast.
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Copyright © 2001 by the American Roentgen Ray Society.
