| 郝金华,孙小影,王涛,邓惠慧,凌岳,赵小华.超声耦合剂软胶袋垫衬法对睾丸DWI图像质量的影响[J].中国医学影像技术,2018,34(6):929~933 |
| 超声耦合剂软胶袋垫衬法对睾丸DWI图像质量的影响 |
| Effect of ultrasonic coupling agent-soft rubber bag padding method on DWI image quality of testis |
| 投稿时间：2017-08-25 修订日期：2018-04-18 |
| DOI：10.13929/j.1003-3289.201708177 |
| 中文关键词: 耦合剂 软胶袋 睾丸 扩散磁共振成像 |
| 英文关键词:Coupling agent Soft rubber bag Testicle Diffusion magnetic resonance imaging |
| 基金项目:广东省佛山市医学类科技攻关项目（2016AB003263）、实用新型专利（专利号：ZL201620600219.X）。 |
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| 中文摘要: |
| 目的 探讨CT能谱成像对血友病性关节病（HA）患者膝关节滑膜含铁血黄素沉积（SHD）的评估价值。方法 对25例HA患者40个膝关节行CT能谱和MR扫描。根据MR IPSG评分将关节SHD分轻度组和重度组，以同层腘窝处半膜肌为对照组，测量并计算滑膜ROI的CT值、铁浓度（FeC）、水浓度（WC）、有效原子序数（Eff-Z）和平均能谱曲线斜率（aSCS）。采用单因素方差分析比较3组各参数，根据ROC曲线评估能谱参数诊断SHD的阈值和效能。结果 3组CT值、FeC、WC、Eff-Z和aSCS差异均有统计学意义（F=148.08、307.88、7.80、364.62和261.50，P均<0.01），组间两两比较除WC外，余各参数差异均有统计学意义（P均<0.05）。aSCS评价SHD的ROC曲线下面积（AUC）最大，诊断重度和轻度SHD的阈值分别为1.84和0.42。结论 CT能谱成像多参数可用于分析评估血友病性滑膜炎SHD的严重程度，具有重要临床意义。 |
| 英文摘要: |
| Objective To explore an auxiliary method to improve DWI image quality of testis. Methods Thirty healthy male volunteers were selected, and EPI-DWI and FSE-T2WI scanning with the same parameters were successively performed according to three different schemes. Scheme A:Padding ultrasonic coupling agent-soft rubber bag at the scanning position. Scheme B:Padding physiological saline-soft rubber bag at the scanning position. Scheme C:No pre-examination treatment at the scanning position. FSE-T2WI (the same scheme and the same slice) was used as the reference of anatomic form, and the images were conducted by two attending doctors. The image geometric distortion, signal uniformity and anatomical clarity were scored by 5 points method. SNR and CNR of were calculated by one of the two doctors. The scoring consistency between the two doctors was evaluated. The scoring of image geometric distortion, signal uniformity, anatomic clarity, SNR and CNR of the three schemes were statistically analyzed. Results The scoring consistency of image geometrical distortion, signal uniformity and anatomical clarity of the three schemes were relatively good or better between the two doctors (Kappa=0.805, 0.737 and 0.713). There were significant differences of image geometrical distortion, signal uniformity and anatomical clarity scoring obtained from three schemes (comparisons between groups and overall comparison, all P<0.05), superiority:Scheme A > Scheme B > Scheme C. Conclusion Ultrasonic coupling agent-soft rubber bag padding method can significantly improve DWI imaging quality of testis. |
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