Image‐guided focal ablation procedures are first‐line therapy options in the treatment of liver cancer tumors that provide advantageous reductions in patient recovery times and complication rates relative to open surgery. However, extensive physician training is required and image guidance variabilities during freehand therapy applicator placement limit the sufficiency of ablation volumes and the overall potential of these procedures. We propose the use of three‐dimensional ultrasound (3D US) to provide guidance and localization of therapy applicators, augmenting current ablation therapies without the need for specialized procedure suites. We have developed a novel scanning mechanism for geometrically variable 3D US images, a mechanical tracking system, and a needle applicator insertion workflow using a custom needle applicator guide for targeted image‐guided procedures.

中文翻译：

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几何可变三维超声，用于局灶性肝癌肿瘤的机械辅助图像引导治疗。

图像引导的局部消融术是治疗肝癌肿瘤的一线治疗选择，与开放手术相比，可以显着减少患者的恢复时间和并发症发生率。但是，需要进行大量的医师培训，徒手治疗涂药器放置期间图像指导的可变性限制了消融量的充分性以及这些手术的总体潜力。我们建议使用三维超声（3D US）来提供治疗施药者的指导和定位，从而增加当前的消融疗法，而无需专门的手术套件。我们开发了一种新颖的扫描机制，用于处理几何可变的3D US图像，机械跟踪系统，