经会阴四维超声成像结合图像降噪技术评估产后盆底功能障碍的价值探讨  

Evaluation on postpartum pelvic floor dysfunction by transperineal four-dimensional ultrasound imaging combined with image denoising technology

作　　者：黄弋庭 周莹[1] 尤沛[1] 周凯[1] HUANG Yiting;ZHOU Ying;YOU Pei;ZHOU Kai(Department of Ultrasound,Yangzhou Health Center for Women and Children,Jiangsu 225000,China)

机构地区：[1]江苏省扬州市妇幼保健院超声科

出　　处：《临床超声医学杂志》2019年第9期664-667,共4页Journal of Clinical Ultrasound in Medicine

摘　　要：目的探讨经会阴四维超声成像结合图像降噪技术评估产后盆底功能障碍的价值。方法应用FieldⅡ软件模拟医学超声图像,分别利用基于NSCT变换算法、噪声图像法、小波软阈值法、GenLik算法、SRAD算法对噪声图像进行降噪,比较各种方法的降噪性能,选择最佳方法进行四维超声图像的降噪。将140例行经会阴四维超声检查的女性分为产后组70例和未育组70例,产后组根据有无盆底功能障碍分为盆底功能障碍组53例和无障碍组17例,分别在静息状态、Valsalva状态及缩肛状态时采集二维和四维超声图像,使用最佳方法进行降噪,测量并比较各组四维超声重建后的肛提肌裂孔面积(LHA)、肛提肌厚度(LAT)、从收缩状态到Valsalva状态肛提肌裂孔面积的变化(△LHA)。结果基于NSCT变换算法的超声图像降噪方法的降噪性能最佳,优于其他算法。经会阴四维超声检查结果显示,产后组在静息状态、缩肛状态、Valsalva状态下的LHA、LAT、△LHA均明显高于未育组,差异均有统计学意义(均P<0.01);盆底功能障碍组在静息状态、缩肛状态、Valsalva状态下的LHA、LAT、△LHA均明显高于无障碍组,差异均有统计学意义(均P<0.01)。结论基于NSCT变换算法的超声图像降噪方法能有效抑制斑点噪声,很好地保留图像的细节信息,降噪品质较高。经会阴四维超声成像结合有效的超声图像降噪技术对盆底结构及功能的评估具有一定优势。Objective To evaluate the postpartum pelvic floor dysfunction by transperineal four-dimensional ultrasound imaging combined with image denoising technology.Methods FieldⅡsoftware was applied to simulate medical ultrasound images.NSCT transform-based algorithm,noise image method,wavelet soft threshold method,GenLik algorithm and SRAD algorithm were respectively used to reduce noise of noise images.The noise reduction among various methods was compared,and the best method was selected to reduce noise of four-dimensional ultrasound images.A total of 140 women who underwent transperineal four-dimensional ultrasound were selected,they were divided into the postpartum group(n=70)and the childless group(n=70).The postpartum group was divided into the pelvic floor dysfunction group(n=53)and non-dysfunction group(n=17).Two-dimensional and four-dimensional images were collected during resting state,maximum Valsalva movement,and anal retraction state,respectively,and the optimal method was used for noise reduction.The changes of levator ANI hiatus area(LHA),levator ANI thickness(LAT),and levator ANI hiatus area from contraction state to Valsalva state(delta LHA)after four-dimensional ultrasound reconstruction of each subject were measured and compared.Results The ultrasonic image denoising method based on NSCT transformation algorithm has the best denoising performance than other algorithms.Transperineal four-dimensional ultrasound showed that the LHA,LAT and△LHA in the postpartum group were significantly higher than those in the childless group in the resting state,the rectal state and the Valsalva state,and the differences were statistically significant(all P<0.01).The LHA,LAT and△LHA in pelvic floor dysfunction group were significantly higher than those in non-dysfunction group in the resting state,the rectal state and the Valsalva state(all P<0.01).Conclusion The ultrasonic image denoising method based on NSCT transform can suppress speckle noise more effectively,better preserve the detail information of the image

关 键 词：超声检查 四维 经会阴 图像降噪技术 盆底功能障碍 肛提肌 

分 类 号：R445.1[医药卫生—影像医学与核医学] R711.2[医药卫生—诊断学]