The clinical application of diffusion-weighted MR of low field in the diagnosis of hyperacute cerebral infarction / 中国基层医药

ABSTRACT

Objective To evaluate the clinical application of diffusion-weighted MR of low field in hypera-cute cerebral infarction. Methods Conventional MRI and DWI on 0.35T were performed in 15 patients with highly suspicious hyperacute infarction within 6 hours after presenting symptoms. The coincidence between conventional MRI ,DWI and final clinical diagnosis was analyzed to compare the sensitivity and specificity of diagnosis among DWI,ADC and conventional MRI. Results 12 patients were diagnosed as hyperacute cerebral infarction, identical with final clinical diagnosis. 3 patients were negative on DWI ,who were finally diagnosed as TIA by clinical doctors.The high-intensity zone on DWI appeared infarction in following CT or MRI examination. The sensitivity and speci-ficity of DWI were both 100% ,and those of conventional MRI was 20% and 100% ,respectively. The infarctional region on DWI appeared high intensity and it was in low intensity on ADC maps. Conclusion DWI combined with ADC maps can be an important index in the diagnosis of hyperacute cerebral infarction. Its accuracy for diagnosis was high, which provides objective proofs for early clinical thrombolysis treatment.