Radiofrequency Ablation of Liver Tumors

Clavien, P.A.; Awad, Michael M.; Choti, Michael A.

doi:10.1007/978-3-540-68866-2_47

Cited by 2 publications

(3 citation statements)

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“…Radiofrequency (RF) ablator needle probes are the next in the list of surgical tools used in US-guided robotic surgical platforms. Radiofrequency ablation is one of the most promising minimally invasive techniques for the treatment of liver cancer where malignant tumors are unresectable such as hepatocellular carcinoma, colorectal metastases, neuroendocrine tumors, or other types of metastases [73]- [76], [104]- [105]. The rigid needle probes are usually 14-17.5 gauge, 15-25 cm long, insulated cannulas containing one to three straight needle electrodes or five to ten individual hook-shaped electrode arms or tines used for liver cancer biopsy and ablation [105].…”

Section: Surgical Instruments Considered In Us-guided Rmismentioning

confidence: 99%

“…Radiofrequency ablation is one of the most promising minimally invasive techniques for the treatment of liver cancer where malignant tumors are unresectable such as hepatocellular carcinoma, colorectal metastases, neuroendocrine tumors, or other types of metastases [73]- [76], [104]- [105]. The rigid needle probes are usually 14-17.5 gauge, 15-25 cm long, insulated cannulas containing one to three straight needle electrodes or five to ten individual hook-shaped electrode arms or tines used for liver cancer biopsy and ablation [105]. In US-guided robotic surgical platforms, these needles are either inserted manually using a passive needle guide [75] or with a driver robot which aligns and positions the needle automatically [76].…”

Section: Surgical Instruments Considered In Us-guided Rmismentioning

confidence: 99%

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3D Shape Estimation Of Tendon-Driven Catheters Using Ultrasound Imaging

Hashemi¹,

Sharifi²,

Tavakkoli³

2022

Preprint

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Active cable/tendon-driven catheters are becoming an established part of the minimally invasive surgical procedures. Therefore, there has been growing interest in literature in estimating the shape of their distal end especially using clinical ultrasound (US) imaging systems. The purpose of this thesis is to use a B-mode US imaging system to design time-efficient, accurate and robust algorithm for 3D shape estimation of tendon-driven catheters. Kalman filter (KF), Adaptive Kalman filter (AKF) and Particle filter (PF) algorithms were developed for this purpose. First, they were applied to a series of simulated US B-mode images where AKF provided the best estimate (error: 0.2 ± 0.1 mm). Second, they were applied to a series of experimentally obtained US B-mode images. Calibration procedures were carried out to calibrate these US images in the experiment’s workspace. The PF was shown to provide the best 3D shape estimate (error: 8.6 ± 0.1 mm). However, since almost the same accuracy could be achieved with AKF in ten times less computational time, AKF was concluded to be the best method, in terms of accuracy and efficiency, to estimate the 3D shape of tendon-driven catheters.

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Section: Surgical Instruments Considered In Us-guided Rmismentioning

confidence: 99%

Section: Surgical Instruments Considered In Us-guided Rmismentioning

confidence: 99%

3D Shape Estimation Of Tendon-Driven Catheters Using Ultrasound Imaging

Hashemi¹,

Sharifi²,

Tavakkoli³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…RFA is another local therapy used in several solid tumors, which involves the production of high temperatures inside the tumor leading to tissue necrosis and consequently reduction in tumor size [ 93 ]. RFA can be performed percutaneously, intra-operatively, or endoscopically.…”

Section: Loco-regional Therapiesmentioning

confidence: 99%

Personalized Endoscopy in Complex Malignant Hilar Biliary Strictures

Boškoski

Schepis

Tringali

et al. 2021

JPM

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Malignant hilar biliary obstruction (HBO) represents a complex clinical condition in terms of diagnosis, surgical and medical treatment, endoscopic approach, and palliation. The main etiology of malignant HBO is hilar cholangiocarcinoma that is considered an aggressive biliary tract’s cancer and has still today a poor prognosis. Endoscopy plays a crucial role in malignant HBO from the diagnosis to the palliation. This technique allows the collection of cytological or histological samples, direct visualization of the suspect malignant tissue, and an echoendoscopic evaluation of the primary tumor and its locoregional staging. Because obstructive jaundice is the most common clinical presentation of malignant HBO, endoscopic biliary drainage, when indicated, is the preferred treatment over the percutaneous approach. Several endoscopic techniques are today available for both the diagnosis and the treatment of biliary obstruction. The choice among them can differ for each clinical scenario. In fact, a personalized endoscopic approach is mandatory in order to perform the proper procedure in the singular patient.

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Radiofrequency Ablation of Liver Tumors

Cited by 2 publications

References 0 publications

3D Shape Estimation Of Tendon-Driven Catheters Using Ultrasound Imaging

3D Shape Estimation Of Tendon-Driven Catheters Using Ultrasound Imaging

Personalized Endoscopy in Complex Malignant Hilar Biliary Strictures

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