The diagnostic value of CT value in a small amount errhysis hemorrhagic cerebral infarction

doi:10.3969/j.issn.1002-7386.2016.15.009

Abstract：Objective To explore the diagnostic value of the difference of CT value (ΔCT value ) between suspected a small amount of errhysis part and the same part of cerebral infarction in the diagnosis of a small amount errhysis hemorrhagic cerebral infarction .Methods The clinical data including CT , MRI images of 60 patients that were correspondent with the selected standard from November 2011 to June 2015 were retrospectively analyzed .Taking MRI examinaton results as “gold standard”, the patients with a small amount errhysis hemorrhagic cerebral infarction were divided into two groups :group A (n=42) in which the patients were confirmed by MRI as a small amount errhysis hemorrhagic cerebral infarction ;group B ( n=18 ) in which the patients were confirmed by MRI as simple ischemic cerebral infarction .The CT average values insuspected errhysis part of ischemic cerebral infarction and in cerebral infarction part at the same period in both groups were detected , moreover , their ΔCT values were calculated .The results were analyzed by using statistical soft ware to find the optimized diagnostic critical point .Results The CT average values in suspected errhysis part and in cerebral infarction part at the same period in group A were 21.0~63.0Hu,11.0~24.0Hu,respectively,and ΔCT value was 8.0~45.0Hu.The CT average values in suspected errhysis part and in cerebral infarction part at the same period in group B were 20.0~28.0Hu, 9.0~23.0Hu,respectively,andΔCT value was 5.0~14.0Hu.There was a significant difference in ΔCT value between two groups ( P <0.05).The ΔCT value of 12.5Hu was the optimized diagnostic critical point .Conclusion WhenΔCT value is≥12.5Hu in suspected errhysis part and in cerebral infarction part at the same period ,which suggests that there may exist a small amount of errhysis in ischemic cerebral infarction part .IfΔCT value is <12.5Hu,which indicates that the possibility of a small amount of errhysis in ischemic cerebral infarction part is less .