Clinical Value of CT Low Dose Perfusion Imaging in the Diagnosis of Acute Cerebral Infarction
This paper explores the clinical value of CT low dose perfusion imaging in the diagnosis of acute cerebral infarction.All patients received two different doses of perfusion imaging, 120 kV conventional voltage and 80 kV Low dose. The image quality, radiation dose and perfusion parameters of the ischemic region in the infarct center were observed and compared. The qualified rate of brain perfusion image of low dose CT was significantly higher than that of conventional CT, and the difference of image quality data between the two groups was prominent, which was applicable to statistical standard (P < 0.05). The average value of ctdlvol, DLP and effective radiation dose of low-dose CT brain perfusion imaging were significantly better than those of conventional CT. The difference of radiation dose and average value between the two groups was significant, and the difference was applicable to statistical standard (P < 0.05). Among the results of CT perfusion imaging at different doses, there was no significant difference between low-dose CT brain perfusion imaging and conventional CT (P TTP remained unchanged (P > 0.05). CT low-dose perfusion imaging is of great value in the clinical diagnosis of patients with acute cerebral infarction, with obvious imaging characteristics. It can well and objectively evaluate the status of infarct area and local blood flow perfusion, and can improve the clinical diagnosis coincidence rate, which is worth popularizing.