Serial magnetic resonance images of a right middle cerebral artery infarction : persistent hyperintensity on diffusion-weighted MRI over 8 months.
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.
Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea.
Seungnam
S
Son
Dae Seob
DS
Choi
Nack-Cheon
NC
Choi
Byeong Hoon
BH
Lim