Department of Radiology, Selçuk University Medicine Faculty, Konya, Turkey.
Department of Nuclear Medicine, Faculty of Medicine, Selçuk University, Selçuklu, Konya, Turkey..
Med Ultrason. 2021 Aug 11;23(3):289-296. doi: 10.11152/mu-2875. Epub 2021 Apr 1.
The purpose of this study was to investigate the effectiveness of the vascularization index (VI) obtained using color superb microvascular imaging (cSMI) technique in the assessment of thyroid surgical bed for remnant thyroid tissue (RTT).
We evaluated the thyroid surgical bed of 65 patients who had underwent total thyroidectomy (TT) due to papillary carcinoma (PC) using thyroid scintigraphy and cSMI. Color SMI was also performed for the examination of the thyroid parenchyma of 39 healthy asymptomatic participants. VI measurements were performed by manually drawing the contours of the RTT in those with remnant thyroid, the thyroid surgical bed in the patients' group without remnant thyroid, and normal thyroid parenchyma in the control group, using the free region of interest (ROI) with 2-dimensional color SMI VI (2DcSMIVI) mode. The volume of ROI was measured and echogenicity was evaluated. The quantitative 2DcSMIVI values of the surgical bed with RTT (Group A), the surgical bed without RTT (Group B) and normal thyroid of healthy asymptomatic participants (Group C) were compared.
The mean 2DcSMIVI values of Group A was significantly higher than Group B and C (p=0.001). The presence of RTT can be diagnosed with 89.1% sensitivity and 87.5% specificity when 1.75 2DcSMIVI is designated as the cut-off value.
The 2DcSMIVI is an effective imaging technique that can be used for the diagnosis of RTT.
本研究旨在探讨彩色超微血流成像（cSMI）技术获取的血管化指数（VI）在评估甲状腺切除术后残甲状腺组织（RTT）的甲状腺床中的有效性。
我们评估了 65 例因乳头状癌（PC）而行甲状腺全切除术（TT）的患者的甲状腺床，这些患者均接受了甲状腺闪烁显像和 cSMI 检查。还对 39 名无症状健康参与者的甲状腺实质进行了彩色 SMI 检查。在有残余甲状腺的患者中，通过手动绘制残余甲状腺的轮廓来测量彩色 SMI 的 VI 测量值，在无残余甲状腺的患者的甲状腺床中，以及在对照组的正常甲状腺实质中，使用二维彩色 SMI VI（2DcSMIVI）模式的自由感兴趣区（ROI）手动绘制轮廓。测量 ROI 的体积并评估回声强度。比较有 RTT 的手术床（A 组）、无 RTT 的手术床（B 组）和健康无症状参与者的正常甲状腺（C 组）的定量 2DcSMIVI 值。
A 组的平均 2DcSMIVI 值明显高于 B 组和 C 组（p=0.001）。当将 1.75 2DcSMIVI 指定为截断值时，RTT 的存在可以以 89.1%的灵敏度和 87.5%的特异性进行诊断。
2DcSMIVI 是一种有效的成像技术，可用于诊断 RTT。
