| 夏祯,蔡应娱,李鑫,李刚,史秋生,吴蓉,杜联芳,李凡.定量分析≤4 cm实性肾癌灰阶回声特征[J].中国医学影像技术,2019,35(7):1081~1085 |
| 定量分析≤4 cm实性肾癌灰阶回声特征 |
| Quantitative anaysis of echogenicity of ≤4 cm solid renal cell carcinoma with gray-scale ultrasound |
| 投稿时间：2018-12-19 修订日期：2019-05-29 |
| DOI：10.13929/j.1003-3289.201812107 |
| 中文关键词: 肾肿瘤 超声检查 诊断,计算机辅助 定量 |
| 英文关键词:kidney neoplasms ultrasonography diagnosis, computer-assisted quantitative |
| 基金项目:国家自然科学基金（81771838）。 |
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| 中文摘要: |
| 目的 探讨计算机软件辅助分析 ≤ 4 cm实性肾皮质肿瘤回声特征及其诊断效能。方法 回顾分析202例患者的205个 ≤ 4 cm实性肾皮质肿瘤（167个恶性、38个良性）的超声影像资料。采用计算机软件对肿瘤回声特征进行定量分析，以相对单位灰度值为单位，将定量分析数值进一步与肾皮质和肾窦回声进行比较，并半定量归类为明显高回声、稍高回声及低回声。结果 良恶性肿瘤间，相对单位灰度值及回声分布差异均有统计学意义（P均<0.05）；恶性肿瘤多表现为稍高回声（147/167，88.02%），少数表现为低回声（18/167，10.78%）；良性肿瘤主要表现为明显高回声（24/38，63.16%），其次为稍高回声（12/38，31.58%）。良恶性肿瘤之间回声分布差异有统计学意义。以稍高回声及低回声为标准，诊断恶性肾肿瘤的敏感度高（98.80%），但特异度低（63.16%）；以相对单位灰度值<1.51为标准，诊断恶性肾肿瘤的敏感度为75.45%，特异度为73.68%。结论 利用计算机软件可精确定量分析肿瘤回声；稍高回声是 ≤ 4 cm实性肾癌的主要回声表现。 |
| 英文摘要: |
| Objective To investigate the echo characteristics and the diagnostic efficacy of ≤ 4 cm solid renal cortical tumors with computer software. Methods The gray-scale ultrasonic images of 205 solid renal cortical tumors (167 malignant tumors and 38 benign tumors) in 202 patients were retrospectively analyzed. The echogenicity of the tumors were quantitatively analyzed with computer software, and relative unit grayscale values were measured. The graysacle value of the tumor was compared with that of the renal cortex and sinus. The echogenicity of tumors were further semi-quantitatively classified as obvious hyperechoic, slightly hyperechoic or hypoechoic. Results The relative unit grayscale value and the echo distribution had significantly different between benign and malignant tumors (both P<0.05). Slightly hyper echogenicity was the major appearance of malignant renal tumors (147/167, 88.02%),while some malignant tumors showed hypoechoic (18/167, 10.78%). The majority of benign renal tumors were obvious hyperechoic (24/38, 63.16%) and some of them represented as slightly hyperechoic (12/38, 31.58%). There were statistically significant differences of echo distributions between benign and malignant tumors. Taken slightly hyperechoic or hypoechoic as standards for differentiating magligant from benign tumors, the sensitivity was 98.80%, but the specificity was 63.16%. Taken the relative unit gray value <1.51 as standard for differentiating magligant and benign ones, the sensitivity was 75.45%, while the specificity was 73.68%. Conclusion The degree of tumor echo can be accurately quantified with computer software. Most ≤ 4 cm solid renal cell carcinomas show slightly high echogenicity. |
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