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首页> 外文期刊>Academic radiology >Semiautomatic Volumetric Tumor Segmentation for Hepatocellular Carcinoma. Comparison between C-arm Cone Beam Computed Tomography and MRI.
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Semiautomatic Volumetric Tumor Segmentation for Hepatocellular Carcinoma. Comparison between C-arm Cone Beam Computed Tomography and MRI.

机译：肝细胞癌的半自动体积肿瘤分割。 C形臂锥梁计算断层扫描和MRI的比较。

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摘要

Rationale and Objectives: To evaluate the precision and reproducibility of a semiautomatic tumor segmentation software in measuring tumor volume of hepatocellular carcinoma (HCC) before the first transarterial chemo-embolization (TACE) on contrast-enhancement magnetic resonance imaging (CE-MRI) and intraprocedural dual-phase C-arm cone beam computed tomography (DP-CBCT) images. Materials and Methods: Nineteen HCCs were targeted in 19 patients (one per patient) who underwent baseline diagnostic CE-MRI and an intraprocedural DP-CBCT. The images were obtained from CE-MRI (arterial phase of an intravenous contrast medium injection) and DP-CBCT (delayed phase of an intra-arterial contrast medium injection) before the actual embolization. Three readers measured tumor volumes using a semiautomatic three-dimensional volumetric segmentation software that used a region-growing method employing non-Euclidean radial basis functions. Segmentation time and spatial position were recorded. The tumor volume measurements between image sets were compared using linear regression and Student's t-test, and evaluated with intraclass-correlation analysis (ICC). The inter-rater Dice similarity coefficient (DSC) assessed the segmentation spatial localization. Results: All 19 HCCs were analyzed. On CE-MRI and DP-CBCT examinations, respectively, 1) the mean segmented tumor volumes were 87 ± 8 cm3 (2-873) and 92 ± 10 cm3 (1-954), with no statistical difference of segmented volumes by readers of each tumor between the two imaging modalities and the mean time required for segmentation was 66 ± 45 seconds (21-173) and 85 ± 34 seconds (17-214) (P =.19); 2) the ICCs were 0.99 and 0.974, showing a strong correlation among readers; and 3) the inter-rater DSCs showed a good to excellent inter-user agreement on the spatial localization of the tumor segmentation (0.70 ± 0.07 and 0.74 ± 0.05, P =.07). Conclusion: This study shows a strong correlation, a high precision, and excellent reproducibility of semiautomatic tumor segmentation software in measuring tumor volume on CE-MRI and DP-CBCT images. The use of the segmentation software on DP-CBCT and CE-MRI can be a valuable and highly accurate tool to measure the volume of hepatic tumors.
机译：理由和目的：评价在对比度增强的磁共振成像（CE-MRI）和过程内的第一transarterial化疗栓塞（TACE）之前测量肝细胞癌（HCC）的肿瘤体积的半自动肿瘤分割软件的精度和再现性双相C形臂的锥形束计算机断层摄影（DP-CBCT）图像。材料与方法：19肝癌19例（每名患者之一）进行了针对性谁接受基线诊断CE-MRI和过程内DP-CBCT。实际栓塞前从CE-MRI（静脉内注射造影剂的动脉相）和DP-CBCT（动脉内注射对比剂的延迟相位）获得的图像。三个阅读器使用使用采用非欧几里德径向基函数的区域生长方法的半自动三维体积分割软件来测量肿瘤体积。分割的时间和空间位置的记录。使用线性回归和学生t检验进行比较图像组之间的肿瘤体积测量，并用组内相关分析（ICC）来评价。在评估者间骰子相似系数（DSC）所评估的分割空间定位。结果：19对肝癌进行了分析。在CE-MRI和DP-CBCT检查，分别1）平均分割肿瘤体积是87±8立方厘米（2-873）和92±10立方厘米（1-954），与由读者分段体积的差异无统计学意义对分割所需的两个成像模态的平均时间之间的每个肿瘤为66±45秒（21-173）和85±34秒（17-214）（P = 0.19）; 2）相关系数均0.99和0.974，表现出读者之间的较强的相关性;和3）评估者间DSC的表现出良好的对肿瘤分割（0.70±0.07和0.74±0.05，P = 0.07）的空间定位优良的用户间的协议。结论：本研究显示很强的相关性，高精度和优异的在测量上CE-MRI和DP-CBCT图像肿瘤体积半自动肿瘤分割软件再现性。使用在DP-CBCT和CE-MRI分割软件，可以衡量肝肿瘤的体积有价值的和高度精确的工具。

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  • 来源
    《Academic radiology》 |2013年第4期|共7页
  • 作者

    TacherV.; LinM.; ChaoM.; GjestebyL.; BhagatN.; MahammediA.; ArdonR.; MoryB.; GeschwindJ.-F.;

  • 作者单位

    Russell H. Morgan Department of Radiology and Radiological Science Division of Vascular and;

    Clinical Informatics Interventional and Translational Solutions Philips Research North America;

    Russell H. Morgan Department of Radiology and Radiological Science Division of Vascular and;

    Russell H. Morgan Department of Radiology and Radiological Science Division of Vascular and;

    Russell H. Morgan Department of Radiology and Radiological Science Division of Vascular and;

    Russell H. Morgan Department of Radiology and Radiological Science Division of Vascular and;

    Medysis Philips Research Suresnes France;

    Medysis Philips Research Suresnes France;

    Russell H. Morgan Department of Radiology and Radiological Science Division of Vascular and;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 放射医学;
  • 关键词

    C-arm cone beam CT; Dice similarity coefficient; Hepatocellular carcinoma; MRI; TACE; Tumor segmentation software;

    机译：C形臂锥梁CT;骰子相似系数;肝细胞癌;MRI;TACE;肿瘤分割软件;

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