Using MRI to Evaluate Anatomic Significance of Aortic Bifurcation, Right Renal Artery, and Conus Medullaris When Locating Lumbar Vertebral Segments
Chang Hee Lee1,
Bo Kyoung Seo1,
Young Chil Choi1,
Hyun Joon Shin1,
Jeong Hee Park1,
Hae Jeong Jeon1,
Kyeong Ah Kim2,
Cheol Min Park2 and
Baek Hyun Kim2
1 Department of Diagnostic Radiology, University of Konkuk, Chung-Ju Hospital,
620-5 Kyohyun-Dong, Chung-Ju City, Chung-Buk 380-704, South Korea.
2 Department of Diagnostic Radiology, University of Korea, Kuro Hospital, 80
Guro-Dong, Guro-Ku, Seoul 151-050, South Korea.
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Fig. 1A. —28-year-old man who presented with lower back pain.
Cervicothoracic sagittal scout MR image shows oil capsule (arrow) at
upper half of T12 (arrowhead).
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Fig. 1B. —28-year-old man who presented with lower back pain. Sagittal
T2-weighted fast spin-echo image of lumbar spine shows oil capsule (white
arrow) at position seen in A. Note level of upper half of L4
vertebra (black arrow).
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Fig. 1C. —28-year-old man who presented with lower back pain. Axial
T2-weighted fast spin-echo image shows aortic bifurcation (arrow) as
longest horizontal position immediately before aorta bifurcates and becomes
two common iliac arteries at upper half of L4 vertebra.
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Fig. 2A. —51-year-old man with herniated disk at L4–L5 level.
Sagittal T2-weighted fast spin-echo image shows proximal portion of right
renal artery (arrow) in right paracentral portion as small round
signal void at level of L1–L2 intervertebral disk space.
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Fig. 2B. —51-year-old man with herniated disk at L4–L5 level. In
sagittal T1-weighted spin-echo image, tip of conus medullaris (arrow)
is shown as most distal point of cord, at level of upper half of L2
vertebra.
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Fig. 3A. —24-year-old woman with transitional vertebra (lumbarization
of S1). Note that paraspinal structures are located more caudad than is
normal. Cervicothoracic sagittal scout MR image shows oil capsule
(arrow) at upper border of L1 vertebra (arrowhead).
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Fig. 3B. —24-year-old woman with transitional vertebra (lumbarization
of S1). Note that paraspinal structures are located more caudad than is
normal. Sagittal T2-weighted fast spin-echo image shows right renal artery
(arrow) at lower half of L2 vertebra.
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Fig. 3C. —24-year-old woman with transitional vertebra (lumbarization
of S1). Note that paraspinal structures are located more caudad than is
normal. Sagittal T1-weighted spin-echo image reveals tip of conus medullaris
(arrow) at lower half of L2 vertebra.
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Fig. 3D. —24-year-old woman with transitional vertebra (lumbarization
of S1). Note that paraspinal structures are located more caudad than is
normal. Axial T2-weighted fast spin-echo image shows aortic bifurcation
(arrow) at level of L4–L5 intervertebral disk space.
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Fig. 4A. —49-year-old woman with transitional vertebra (sacralization
of L5). Note that paraspinal structures are positioned more cephalad than is
normal. Also note spondylolisthesis of L4 onto L5 vertebrae. In
cervicothoracic sagittal scout MR image, oil capsule (arrow) is shown
between T10 and T11 vertebra.
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Fig. 4B. —49-year-old woman with transitional vertebra (sacralization
of L5). Note that paraspinal structures are positioned more cephalad than is
normal. Also note spondylolisthesis of L4 onto L5 vertebrae. Sagittal
T2-weighted fast spin-echo image shows right renal artery (arrow) at
upper half of L1 vertebra.
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Fig. 4C. —49-year-old woman with transitional vertebra (sacralization
of L5). Note that paraspinal structures are positioned more cephalad than is
normal. Also note spondylolisthesis of L4 onto L5 vertebrae. Sagittal
T1-weighted spin-echo image reveals tip of conus medullaris (arrow)
at lower half of T12 vertebra.
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Fig. 4D. —49-year-old woman with transitional vertebra (sacralization
of L5). Note that paraspinal structures are positioned more cephalad than is
normal. Also note spondylolisthesis of L4 onto L5 vertebrae. Axial T2-weighted
fast spin-echo image shows aortic bifurcation (arrow) at level of
L3–L4 intervertebral disk space.
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Copyright © 2004 by the American Roentgen Ray Society.
