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首页> 外文期刊>Radiotherapy and oncology: Journal of the European Society for Therapeutic Radiology and Oncology >High definition three-dimensional ultrasound to localise the tumour bed: a breast radiotherapy planning study.
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High definition three-dimensional ultrasound to localise the tumour bed: a breast radiotherapy planning study.

机译：高清晰度三维超声定位肿瘤床：一项乳腺癌放疗计划研究。

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BACKGROUND AND PURPOSE: Complex radiation techniques, such as conformal radiotherapy for partial breast irradiation, require accurate localisation of the tumour bed. This study investigated high definition 3D ultrasound for breast tumour bed localisation. Study aims were: firstly, to determine how easily a tumour cavity could be visualised with 3D ultrasound; secondly, to determine the accuracy of computed tomography (CT) and 3D ultrasound co-registration; thirdly, to compare 3D ultrasound with other methods of localisation. MATERIALS AND METHODS: 3D ultrasound examinations were carried out in 40 women attending for breast radiotherapy. 3D position data were co-registered with the radiotherapy planning CT. 2D ultrasound and CT, surgical clips and CT, and CT alone were also used to localise the tumour bed in 32/40, 14/40 and 5/40 patients, respectively. Tumour bed volume and centre of gravity measurements for all methods of localisation were compared. RESULTS: Mean surgery to imaging interval was 44 days (range 23-86 days). The post-operative cavity was seen in all cases using the 3D ultrasound, and was graded as highly visible, visible and subtle in 21/40 (53%), 12/40 (30%) and 7/40 (17%) cases, respectively. There was a statistically significant improvement in the ability of 3D ultrasound to localise the tumour bed compared with 2D ultrasound. CT-ultrasound registration was achieved in all cases. Two-dimensional and 3D ultrasound showed smaller tumour bed volumes than clips. CONCLUSIONS: Three-dimensional ultrasound localisation of the tumour bed appears superior to 2D ultrasound. It can also be co-registered with a planning CT, thus allowing additional information on the size and location of the tumour bed to be integrated into complex radiotherapy planning.
机译：背景与目的：复杂的放射技术，例如局部乳腺放射的适形放射疗法，需要精确定位肿瘤床。这项研究调查了高清3D超声对乳腺肿瘤床的定位。研究目的是：首先，确定3D超声可视化肿瘤腔的难易程度。其次，确定计算机断层扫描（CT）和3D超声共配准的准确性;第三，将3D超声与其他定位方法进行比较。材料与方法：对40例接受乳房放疗的妇女进行了3D超声检查。 3D位置数据已与放射治疗计划CT共同注册。还分别使用2D超声和CT，手术夹以及CT和CT分别定位32 / 40、14 / 40和5/40患者的肿瘤床。比较了所有定位方法的肿瘤床体积和重心测量结果。结果：平均手术到成像间隔是44天（范围23-86天）。在所有情况下，使用3D超声都可以看到术后腔，在21/40（53％），12/40（30％）和7/40（17％）情况下，其分级为高度可见，可见和细微， 分别。与2D超声相比，3D超声定位肿瘤床的能力在统计学上有显着提高。在所有情况下均实现了CT超声配准。二维和3D超声显示的肿瘤床体积小于夹子。结论：肿瘤床的三维超声定位似乎优于二维超声。它也可以与计划CT共同注册，从而可以将有关肿瘤床大小和位置的其他信息整合到复杂的放射治疗计划中。

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