Susceptibility weighted imaging and diffusion weighted imaging in the clinic value of cerebral microbleeds

Objective:To evaluate the clinic value of cerebral microbleeds detection in patients with hypertension by susceptibility weighted imaging(SWI),diffusion weighted imaging(DWI)and conventional FSE sequences.Methods:The study sample consisted of 40patients and 40cases healthy population.All cases were examined using SWI,DWI and conventional FSE sequences by GE 3.0T MR machine with 32tunnel HR head coil.According to the clinical conditions,patients with hypertension were divided into low-mild risk group and high-very risk group.The frequency,numbers and locations of CMBs were analyzed by SWI and DWI.The value of SWI and DWI sequences in founding CMBs were compared.Results:CMBs were founded in 26cases patients with hypertension and 6cases of healthy population.Slight,moderate,severe degrees of CMBs were founded in patients with hypertension.Only slight CMBs were seen in healthy population.CMBs were detected on SWI and DWI sequences mainly located in the Cortico-subcortical region and bilateral basal ganglia area.On both SWI and DWI sequences,compared with the controls subjects and patients of low-mild risk group,patients of high-very risk group had significant increased positive rate and numbers of CMBs(P0.01).Conclusion:SWI sequence is much better than DWI,SWI sequence is more sensitive than DWI in detecting CMBs and should be as the first choice.