MR Diffusion-Weighted Imaging and ADC Value Measurement in the Diagnosis of Breast Axillary Lymph Node Cancer / 医疗卫生装备

ABSTRACT

Objective To value diffusion-weighted imaging and ADC value measurement of benign and malignant axillary lymph node identification value. Methods From 2006-06 to 2008--02, by collecting in the hospital for breast dynamic con-trast-enhanced scans and diffusion-weighted imaging, 217 lesions in 56 cases with a clear outcome of the surgery and pathology and/or needle biopsy results were retrospectively analyzed.Results The DWI could accurately show the lymph node of the armpit abnormality, 163 cases of 47 breast cancer cases with lymph node metastasis showed high signal in DWI image that did not decrease with increasing b value, similar to the 54 cases of 9 benign enlarged responsive prolifer-ative lymph nodes. But the former showed higher signal than the later. The ADC values were(1.017±0.114)×10-3mm2/s and (1.905±0.136)×10-3mm2/s respectively, and showed significant difference between two groups (P<0.05). Conclusion The dynamic contrast-enhanced subtraction MR technology benign and malignant breast lesions has high diagnosis and differ-ential diagnosis importance. DWI and ADC value measurement is a safe, non-invasive, accurate and rapid diagnosis of metastasis axillary lymph nodes and benign proliferative response of the lymph nodes means.