计算机辅助肝肿瘤消融：要求和初步结果
Computer-aided hepatic tumour ablation : requirements and preliminary results
摘要：
肝肿瘤的手术切除并不总是可能的，因为它取决于不同的因素，其中包括它们在肝功能段内的位置。替代技术包括局部使用化学或物理试剂来破坏肿瘤。射频和冷冻外科消融是可以永久执行的这种替代技术的示例。这需要在消融期间精确定位肿瘤位置。计算机辅助手术工具可以与这些新的消融技术结合使用，以提高治疗效率，同时受益于微创。本文介绍了计算机辅助肝肿瘤消融系统的原理，并描述了初步实验，重点是数据配准评价。为了接近传统的协议，我们考虑注册术前CT或MRI数据，以术中回波描记数据。
英文摘要：
Surgical resection of hepatic tumours is not always possible, since it depends on different factors, among which their location inside the liver functional segments. Alternative techniques consist in local use of chemical or physical agents to destroy the tumour. Radio frequency and cryosurgical ablations are examples of such alternative techniques that may be performed percutaneously. This requires a precise localisation of the tumour placement during ablation. Computer-assisted surgery tools may be used in conjunction with these new ablation techniques to improve the therapeutic efficiency, whilst they benefit from minimal invasiveness. This paper introduces the principles of a system for computer-assisted hepatic tumour ablation and describes preliminary experiments focusing on data registration evaluation. To keep close to conventional protocols, we consider registration of pre-operative CT or MRI data to intra-operative echographic data.
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