Effect of Thin-Section Diffusion-Weighted MR Imaging on Stroke Diagnosis
Hisao Nakamuraa,
Kei Yamadaa,
Osamu Kizua,
Hirotoshi Itoa,
Sachiko Yuena,
Takaaki Itoa,
Kenji Yoshikawab,
Kensuke Shigab,
Masanori Nakagawab and
Tsunehiko Nishimuraa
a Department of Radiology, Kyoto Prefectural University of Medicine, Kajii-cyo, Kawaramachi Hirokoji Noboru, Kamigyo-ku, Kyoto City, Japan
b Department of Neurology, Kyoto Prefectural University of Medicine, Kajii-cyo, Kawaramachi Hirokoji Noboru, Kamigyo-ku, Kyoto City, Japan
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FIG 1. Images in a 67-year-old man with oculomotor nerve palsy.
A, Conventional DW imaging fails to show any significant abnormality.
B, The thin-section DW imaging shows a tiny hyperintense lesion at the left paramedian midbrain (arrow). The TOAST diagnosis was changed from normal to small-vessel disease.
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FIG 2. Images obtained in a 67-year-old man with aphasia.
A and B, Conventional DW images do not depict any lesions.
C and D, Thin-section DW images depict lesions in the cerebral hemisphere in the middle cerebral artery territory (arrows). The TOAST diagnosis was changed from normal to large-artery atherosclerosis.
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FIG 3. Images obtained in a 45-year-old woman with atrial fibrillation.
A, Conventional DW imaging shows a hyperintense lesion (arrow) in the left frontal lobe.
B, Thin-section DW imaging does not show this lesion, and the first finding is determined to be an artifact.
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