摘要
Abstract
Objective To prospectively compare the difference in image quality between turbo spin-echo diffusion-weighted imaging(TSE-DWI)and planar echo diffusion-weighted imaging(EP-DWI)for nasal sinus lesions.To investigate the diagnostic value of the apparent diffusion coefficient(ADC)values of TSE-DWI and EP-DWI in identifying benign and malignant nasal sinus lesions.Methods Ninety-three patients with nasal sinus lesions seen in our hospital from October 2022 to August 2023 were prospectively selected for the study.A Philips 1.5T MRI scanner was used for scanning,and all patients underwent TSE-DWI and EP-DWI imaging after routine nasal sinus MRI plain scanning.Image quality was compared through subjective and objective evaluation of TSE-DWI and EP-DWI images by two physicians.The agreement between the two physicians,the agreement between the ADC values of the two DWI sequences,and the Pearson correlation coefficient were evaluated.The differences in ADC values of benign and malignant nasal sinus lesions were compared and the diagnostic efficacy of ADC values for identifying benign and malignant nasal sinus lesions was calculated using ROC curves.Results The mean values of all subjective scores,signal-to-noise ratios and contrast-to-noise ratios of TSE-DWI images were higher than those of EP-DWI(P<0.05),and the distortion rate of TSE-DWI images was lower than that of EP-DWI(P<0.05).Regarding subjective scoring of images,the agreement between the two physicians was good(Kappa>0.4).For ADC value measurement,the agreement between two physicians was excellent(ICC>0.74).The agreement between the ADC values of the two DWI sequences was excellent(ICC>0.74)and showed a very strong positive correlation(Pearson's correlation coefficient>0.8).The difference in ADC values for benign and malignant lesions was statistically significant(P<0.05).The ADC values of the two DWI sequences had the same sensitivity,specificity,positive predictive value,negative predictive value and accuracy in identifying benign and malignant lesions of the nasal sinuses,which were 90.1%,90.9%,97.0%,74.1%,90.3%,respectively.Conclusion The magnetic resonance TSE-DWI sequence can effectively improve the image quality of nasal sinus sites and is suitable for a wide range of clinical applications.The ADC value has high diagnostic efficacy in identifying benign and malignant nasal sinus lesions.关键词
鼻腔鼻窦病变/TSE-DWI/EP-DWI/图像质量/良恶性病变/表观扩散系数Key words
nasal sinus lesions/TSE-DWI/EP-DWI/image quality/benign and malignant lesions/apparent diffusion coefficient
