| Serial Magnetic Resonance Images of a Right Middle Cerebral Artery Infarction : Persistent Hyperintensity on Diffusion-Weighted MRI Over 8 Months. |
| Seungnam Son, Dae Seob Choi, Nack Cheon Choi, Byeong Hoon Lim |
1Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea. brevis1@naver.com
2Department of Radiology, Gyeongsang National University School of Medicine, Jinju, Korea.
3Kyungnam Regional Cardiocerebrovascular Center, Jinju, Korea. |
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| ABSTRACT |
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A lesion that is hyperintense on diffusion-weighted imaging (DWI) and hypointense on the apparent diffusion coefficient (ADC) map is a characteristic magnetic resonance imaging (MRI) finding in acute ischemic infarction. In some cases, however, these findings can persist for a few months after infarct onset. It is thought that these finding reflect the different evolution speeds of the infarcted tissue. We report a patient with a right middle cerebral artery territory infarction with persistent hyperintensity on DWI and hypointensity on the ADC map for over 8 months. To our knowledge, this is the most persistent case of hyperintensity lesion on DWI and the serial MRI images of this patient provide important information on the evolution of infarcted tissue. |
| Key Words:
Apparent diffusion coefficient; Cerebral infarction; Diffusion-weighted imaging; Perfusion-weighted MRI |
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