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经双段式阵列排列的针具对齐超声影像引导下的进入。

Needle Aligned Ultrasound Image-Guided Access Through Dual-Segment Array.

出版信息

IEEE Trans Biomed Eng. 2023 Sep;70(9):2645-2654. doi: 10.1109/TBME.2023.3260735. Epub 2023 Aug 30.

DOI:10.1109/TBME.2023.3260735
PMID:37030673
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10590177/
Abstract

UNLABELLED

Ultrasound (US) guided access for percutaneous nephrolithotomy (PCNL) is gaining popularity in the urology community as it reduces radiation risk. The most popular technique involves manual image-needle alignment. A misaligned needle however needs to be retracted and reinserted, resulting in a lengthened operation time and complications such as bleeding. These limitations can be mitigated through the co-registration between the US array and needle. The through-hole array concept provides the primary solution, including a hole at the center of the array. Because of the central opening, the image-needle alignment is achieved inherently. Previous literature has described applications that are limited to superficial and intravascular procedures, suggesting that developing a through-hole array for deeper target applications would be a new breakthrough.

OBJECTIVE

Here, we present a dual-segment array with a central opening. As the prototype development, two segments of 32-element arrays are combined with an open space of 10 mm in length in between them.

METHOD

We conducted phantom and ex-vivo studies considering the target depth of the 80-100 mm range. The image quality and needle visibility are evaluated by comparing the signal-to-noise ratio (SNR), full width at half maximum (FWHM), and contrast-to-noise ratio (CNR) results measured with a no-hole linear array under equivalent conditions. An ex-vivo study is performed using porcine kidneys with ceramic balls embedded to evaluate the needle access accuracy.

RESULTS AND CONCLUSION

The mean needle access error of 20 trials is found to be 2.94 ±1.09 mm, suggesting its potential impact on realizing a simple and intuitive deep US image-guided access.

摘要

目的：本研究提出了一种具有中央开口的双段式阵列。作为原型开发，我们将两段 32 元阵列组合在一起，中间有 10mm 的开放空间。

方法：我们进行了体模和离体研究，考虑到目标深度在 80-100mm 范围内。通过在等效条件下测量无孔线性阵列的信噪比（SNR）、半最大值全宽（FWHM）和对比噪声比（CNR）结果，评估图像质量和针的可视性。我们还使用嵌入陶瓷球的猪肾进行了离体研究，以评估针的进入准确性。

结果：20 次试验的平均针进入误差为 2.94±1.09mm，表明其在实现简单直观的深 US 图像引导进入方面具有潜在影响。

结论：该双段式具有中央开口的阵列设计为实现深 US 图像引导的简单直观操作提供了一种有前途的方法。

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