MRI findings of subacute cerebral infarction

Subacute cerebral infarction refers to cerebral infarction from 3 days to 10 days after onset. The most typical characteristics of cerebral infarction are low signal intensity on T1 sequence, high signal intensity on T2 sequence and cerebrospinal fluid suppression sequence. The acute phase is more sensitive to diffusion imaging sequence, showing slightly high signal intensity, ADC map signal no longer decreases. High signal refers to bright, white signal on the picture; low signal is dark, and the density signal of water is similar. Cerebral infarction is a disorder of blood supply of brain tissue caused by various reasons, resulting in ischemia, hypoxia and necrosis of local brain tissue, and then a series of clinical manifestations can be produced. However, both diffusion imaging and cerebrospinal fluid suppression sequences showed high signal intensity in subacute phase. As long as there was this characteristic manifestation, subacute cerebral infarction was defined.