Accuracy assessment of target tracking using two 5-degrees-of-freedom wireless transponders

Eppenga, Roeland; Kuhlmann, Koert F. D.; Ruers, Theo J.M.; Nijkamp, Jasper

doi:10.1007/s11548-019-02088-9

Cited by 8 publications

(8 citation statements)

References 33 publications

(39 reference statements)

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“…Recently, some high-precision tracking systems such as those using wireless electromagnetic techniques have been applied to surgical navigation in the healthcare industry. It can achieve up to sub-millimetre accuracy which is beneficial to patient safety and improve treatment efficacy (Eppenga et al, 2020). However, in order to minimise our manufacturing cost, we decided to adopt welldeveloped AR technology to overlay our acupoints on the copper model.…”

Section: Discussionmentioning

confidence: 99%

The future of acupuncture education: 3D Augmented Reality (AR) acupuncture model for Chinese Medicine

TONG¹,

CHAN²,

YU³

2023

HKIE Transactions

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Acupuncture is a therapeutic modality in Traditional Chinese Medicine which aims to improve the flow of Qi (chi) or energy around the body by applying needles to specific points on the skin. Traditional Chinese Medicine teaches that Qi must flow freely through the body’s meridians, or channels, to ensure health and well-being. Traditionally, Chinese Medicine practitioners used a wooden, copper or bronze acupuncture model to show the points where needles should be applied to the skin and the meridians through which Qi flows around the body. However, as traditional models depict acupuncture points which are too rigid for teaching purposes, understanding the descriptions of acupuncture points from textbooks in 2D is also another hurdle for beginners to apply them to the human body in 3D. With modern computing and 3D-printing technologies, this article introduces a realistic human model in the form of a 6-foot copper acupuncture sculpture with over 370 virtual acupuncture points using state-of-the-art Augmented Reality (AR) and metal 3D-printing techniques for enhanced teaching, learning, and demonstration of acupuncture principles. It will be a new training model for Western and Chinese medical practitioners as well as for the public to gain interactive acupuncture experience that is beneficial to their own health.

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Section: Discussionmentioning

confidence: 99%

The future of acupuncture education: 3D Augmented Reality (AR) acupuncture model for Chinese Medicine

TONG¹,

CHAN²,

YU³

2023

HKIE Transactions

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“…Comparing the results of the breast phantom study with this ex vivo study confirms recent findings that the updated navigation system provides similar accuracy. 24 Even though the overall median and mean resection-toplanned distance were almost 0 mm, the distribution ranged from approximately -6 to ? 9 mm (Fig.…”

Section: Delineate Contour Of Resection Volumementioning

confidence: 97%

“…26 The transponders were implanted with approximately 25 mm distance and a considerable angle between them. 24 To assess migration of the transponders, three VISICOIL gold markers of 0.35 mm by 3 ± 1 mm (RadioMed Corporation, Bartlett, TN) were implanted in the same area as the two transponders. 27 Steps 3 to 5 were required to prepare the navigation interface (Fig.…”

Section: Preparation Workflowmentioning

confidence: 99%

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Real-Time Wireless Tumor Tracking in Navigated Liver Resections: An Ex Vivo Feasibility Study

et al. 2022

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Background Surgical navigation systems generally require intraoperative steps, such as intraoperative imaging and registration, to link the system to the patient anatomy. Because this hampers surgical workflow, we developed a plug-and-play wireless navigation system that does not require any intraoperative steps. In this ex vivo study on human hepatectomy specimens, the feasibility was assessed of using this navigation system to accurately resect a planned volume with small margins to the lesion. Methods For ten hepatectomy specimens, a planning CT was acquired in which a virtual spherical lesion with 5 mm margin was delineated, inside the healthy parenchyma. Using two implanted trackers, the real-time position of this planned resection volume was visualized on a screen, relative to the used tracked pointer. Experienced liver surgeons were asked to accurately resect the nonpalpable planned volume, fully relying on the navigation screen. Resected and planned volumes were compared using CT. Results The surgeons resected the planned volume while cutting along its border with a mean accuracy of − 0.1 ± 2.4 mm and resected 98 ± 12% of the planned volume. Nine out of ten resections were radical and one case showed a cut of 0.8 mm into the lesion. The sessions took approximately 10 min each, and no considerable technical issues were encountered. Conclusions This ex vivo liver study showed that it is feasible to accurately resect virtual hepatic lesions with small planned margins using our novel navigation system, which is promising for clinical applications where nonpalpable hepatic metastases have to be resected with small resection margins.

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“…laparoscopic US transducer) is rarely used during laparoscopic procedures due to the challenging incorporation of wired EM-sensors into the resections field (e.g., via the access port). However, recent work by Eppenga et al [54][55][56] has illustrated that accurate EM-tracking of mobile targets is feasible by means of two 5-DoF wireless EM-transponders (Calypso, Varian Medical Systems Inc). The EM-transponders could be implanted preoperatively in a percutaneous approach at the radiology department under US or CT guidance.…”

Section: Accepted Articlementioning

confidence: 99%

CBCT‐based navigation system for open liver surgery: Accurate guidance toward mobile and deformable targets with a semi‐rigid organ approximation and electromagnetic tracking of the liver

et al. 2021

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Purpose: The surgical navigation system that provides guidance throughout the surgery can facilitate safer and more radical liver resections, but such a system should also be able to handle organ motion. This work investigates the accuracy of intraoperative surgical guidance during open liver resection, with a semi-rigid organ approximation and electromagnetic tracking of the target area. Methods: The suggested navigation technique incorporates a preoperative 3D liver model based on diagnostic 4D MRI scan, intraoperative contrast-enhanced CBCT imaging and electromagnetic (EM) tracking of the liver surface, as well as surgical instruments, by means of six degrees-of-freedom micro-EM sensors. Results: The system was evaluated during surgeries with 35 patients and resulted in an accurate and intuitive real-time visualization of liver anatomy and tumor's location, confirmed by intraoperative checks on visible anatomical landmarks. Based on accuracy measurements verified by intraoperative CBCT, the system's average accuracy was 4.0 ± 3.0 mm, while the total surgical delay due to navigation stayed below 20 min. Conclusions: The electromagnetic navigation system for open liver surgery developed in this work allows for accurate localization of liver lesions and critical anatomical structures surrounding the resection area, even when the liver was manipulated. However, further clinically integrating the method requires shortening the guidance-related surgical delay, which can be achieved by shifting to faster intraoperative imaging like ultrasound. Our approach is adaptable to navigation on other mobile and deformable organs, and therefore may benefit various clinical applications.

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Accuracy assessment of target tracking using two 5-degrees-of-freedom wireless transponders

Cited by 8 publications

References 33 publications

The future of acupuncture education: 3D Augmented Reality (AR) acupuncture model for Chinese Medicine

The future of acupuncture education: 3D Augmented Reality (AR) acupuncture model for Chinese Medicine

Real-Time Wireless Tumor Tracking in Navigated Liver Resections: An Ex Vivo Feasibility Study

CBCT‐based navigation system for open liver surgery: Accurate guidance toward mobile and deformable targets with a semi‐rigid organ approximation and electromagnetic tracking of the liver

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