论文标题
针锥几何形状影响超声增强的细针活检中的弯曲挠度幅度
Needle bevel geometry influences the flexural deflection magnitude in ultrasound-enhanced fine-needle biopsy
论文作者
论文摘要
最近已经证明，与常规的细针吸入活检（FNAB）相比，超声使用超声可以增加超声增强的细针运动活检（USEFNAB）的组织产量。迄今为止，尚未广泛探索斜角几何形状和针头动作之间的关联。在这项研究中，我们研究了各种针状斜角几何形状的针共振特性和偏转幅度，其斜角长度不同。使用常规的柳叶刀，长斜角3.9毫米，空气和水的尖端偏转效率分别为每瓦220微米和105微米。与斜长为4 mm的Axi对称尖端相比，这是较高的，该斜长的长度分别达到了空气和水的每瓦分别为180微米和80微米。这项研究强调了在各种插入介质的背景下，斜角几何形状的弯曲模量之间的关系的重要性，因此，可以通过修改针对USEFNAB应用必不可少的针头斜角几何形状来提供对控制后函数切割作用的理解。
It has been recently demonstrated that use of ultrasound increases the tissue yield in ultrasound-enhanced fine-needle aspiration biopsy (USeFNAB) as compared to conventional fine-needle aspiration biopsy (FNAB). To date, the association between bevel geometry and needle tip action has not been widely explored. In this study, we studied the needle resonance characteristics and deflection magnitude of various needle bevel geometries with varying bevel lengths. With a conventional lancet, having a 3.9 mm long bevel, the tip deflection efficiency in air and water was 220 and 105 micrometres per Watt, respectively. This was higher in comparison to an axi-symmetric tip, having a bevel length of 4 mm, which achieved a deflection efficiency of 180 and 80 micrometres per Watt in air and water, respectively. This study emphasised the importance of relationship between flexural modulus of bevel geometry in the context of various insertion media and, thus, could provide understanding on approaches to control post-puncture cutting action by modifying the needle bevel geometry, essential for the USeFNAB application.
