三维超声造影对肾肿瘤血管结构的初步研究

目的 探讨三维超声造影(three-dimensional contrast-enhanced ultrasound,3D-CEUS)在显示肾肿瘤血管结构中的应用价值.方法 121例常规超声提示肾肿瘤的患者,均经手术后病理证实.首先进行常规超声及超声造影检查,待造影剂基本廓清,再次注射造影剂进行3D-CEUS检查并存储图像.应用QLAB工作软件进行3D-CEUS图像重建,按照血供丰富程度将3D-CEUS图像分为4级.结果 肾良恶性肿瘤3D-CEUS血管结构表现不同.肾细胞癌实质早期3D-CEUS血管结构主要表现为迂曲扩张的粗网状或杂乱树枝状(83.17%,84/101),部分存在充盈缺损区(60.40%,61/101)及假包膜(14.85%,15/101).恶性肿瘤实质早期的血管结构主要是Ⅲ级或Ⅳ级.肾错构瘤实质早期3D-CEUS主要表现为云雾状,局部呈网状或树枝状(31.58%,6/19)或云雾状基础上叠加网状(63.16%,12/19).3D-CEUS对肾肿瘤血管结构的显示优于超声造影.结论 肾肿瘤超声造影三维重建是超声造影的有益补充.

Abstract：

Objective To evaluate the feasibility of three-dimensional contrast-enhanced ultrasound (3D-CEUS) in showing vascular patterns of renal tumors.Methods The images of 3D-CEUS examination were retrospectively analyzed in one hundred and twenty one renal tumors which were confirmed sequentially by pathology.3D-CEUS was performed after conventional ultrasound and contrast-enhanced ultrasound (CEUS).The 3D-CEUS images were reconstructed by QLAB workstation and classified into 4 grades based on the blood supply characteristics.Results All the tumors were confirmed by pathology and operations,including clear cell renal cell carcinoma (CCRCC) (n=91),papillary renal cell carcinoma (PRCC) (n=5),chromophobe renal cell carcinoma (CRCC) (n=5),renal angiomyolipoma (RAML) (n=19),and cystic nephroma (n=1).Three-dimensional reconstruction could provide clear stereoscopic views of the interested structures and morphological characteristics of lesions.The three-dimensional ultrasonography of a particular renal tumor could be a mixture of different basic grades.There were significant differences between benign and malignant renal tumors in 3D-CEUS.The image quality was the best in early parenchymal phase comparing to other phases.In early parenchymal phase,84 RCCs (83.17%) were tortuous expansive reticular or irregular messy dendritic,61 cases (60.40%) with filling defect areas and 15 cases (14.85%) with pseudocapsules.Grade Ⅲ and Grade Ⅳ were the main vascular patterns in maglinant tumors.In early parenchymal phase,6 RAMLs (31.58%) were nebulous with dendritic in part,12 cases(63.16%) were reticular on the basis of nebulous with homogeneous internal structures.The vascular pattern was shown better in 3D-CEUS than CEUS.Conclusions 3D-CEUS can provide clear stereoscopic structures and morphological characteristics of the lesions,it is a useful adjuvant of CEUS for the diagnosis of renal tumors.

Pilot study of three-dimensional contrast-enhanced ultrasound in vascular patterns of renal tumors

Objective To evaluate the feasibility of three-dimensional contrast-enhanced ultrasound (3D-CEUS) in showing vascular patterns of renal tumors.Methods The images of 3D-CEUS examination were retrospectively analyzed in one hundred and twenty one renal tumors which were confirmed sequentially by pathology.3D-CEUS was performed after conventional ultrasound and contrast-enhanced ultrasound (CEUS).The 3D-CEUS images were reconstructed by QLAB workstation and classified into 4 grades based on the blood supply characteristics.Results All the tumors were confirmed by pathology and operations,including clear cell renal cell carcinoma (CCRCC) (n=91),papillary renal cell carcinoma (PRCC) (n=5),chromophobe renal cell carcinoma (CRCC) (n=5),renal angiomyolipoma (RAML) (n=19),and cystic nephroma (n=1).Three-dimensional reconstruction could provide clear stereoscopic views of the interested structures and morphological characteristics of lesions.The three-dimensional ultrasonography of a particular renal tumor could be a mixture of different basic grades.There were significant differences between benign and malignant renal tumors in 3D-CEUS.The image quality was the best in early parenchymal phase comparing to other phases.In early parenchymal phase,84 RCCs (83.17%) were tortuous expansive reticular or irregular messy dendritic,61 cases (60.40%) with filling defect areas and 15 cases (14.85%) with pseudocapsules.Grade Ⅲ and Grade Ⅳ were the main vascular patterns in maglinant tumors.In early parenchymal phase,6 RAMLs (31.58%) were nebulous with dendritic in part,12 cases(63.16%) were reticular on the basis of nebulous with homogeneous internal structures.The vascular pattern was shown better in 3D-CEUS than CEUS.Conclusions 3D-CEUS can provide clear stereoscopic structures and morphological characteristics of the lesions,it is a useful adjuvant of CEUS for the diagnosis of renal tumors.