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Xia M, Hu X, Zhang T, Sun J, Chen C, Hu B. Laser ablation under intraductal cholangioscopic guidance for cholangiocarcinoma. Endoscopy 2023; 55:E590-E591. [PMID: 36996886 PMCID: PMC10063346 DOI: 10.1055/a-2051-7984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Affiliation(s)
- Mingxing Xia
- Department of Gastroenterology and Endoscopy, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Xianrong Hu
- Department of Gastroenterology and Endoscopy, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Ting Zhang
- Department of Gastroenterology and Endoscopy, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Jinbing Sun
- Department of Gastroenterology and Endoscopy, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Cui Chen
- Department of Gastroenterology and Endoscopy, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
| | - Bing Hu
- Department of Gastroenterology and Endoscopy, The Third Affiliated Hospital of Naval Medical University, Shanghai, China
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Lim S, Truong VG, Jeong S, Lee J, Lee BI, Kang HW. Balloon-assisted laser application for endoscopic treatment of biliary stricture. Lasers Surg Med 2023; 55:912-920. [PMID: 37727929 DOI: 10.1002/lsm.23726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/24/2023] [Accepted: 09/09/2023] [Indexed: 09/21/2023]
Abstract
OBJECTIVES Malignant biliary stricture is a ductal narrowing of the bile duct that is often diagnosed at an advanced stage, leading to difficulty in resection. The current study aims to evaluate the feasibility of endobiliary laser treatment by quantifying the extent of coagulative necrosis in tissue under various conditions. METHODS Ex vivo and in vivo porcine bile tissues were used for endobiliary laser treatment to characterize the dosimetric responses of the tissue to various treatment conditions: power level, irradiation time, and number of treatments. 532 nm laser light was coupled with a balloon-integrated diffusing applicator (BDA) to deliver the laser light endoscopically for tissue coagulation. The coagulated regions (maximum length and depth) in the treated tissues were evaluated histologically for quantitative comparison. RESULTS Dosimetric evaluations with ex vivo liver tissue confirmed that both maximum length and depth of coagulative necrosis (CN) increased with applied power and number of treatments. Ex vivo bile duct tests demonstrated that BDA-assisted laser treatment at 10 W for 12 s reproducibly yielded CN with a length of 5.8 ± 1.6 mm and a depth of 0.6 ± 0.2 mm. In vivo tests presented that endoscopic laser treatment using the BDA created CN on the ductal surface without any perforation. Microscopic examinations revealed that a dense inflammatory cell infiltration and eosinophilic area in the in vivo treated tissue. The extent of CN in the in vivo tissue was 40% longer and 120% deeper (length: 8.1 ± 0.7 mm; depth: 1.3 ± 0.2 mm), compared to that in the ex vivo tissue. CONCLUSION BDA-assisted laser treatment could be a feasible option for endoscopic treatment of biliary stricture with uniform ablation at the circumference of bile duct. Further in vivo studies will be performed in a large number of stricture-developed porcine models to examine both efficacy and safety of the proposed endobiliary laser treatment for clinical translations.
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Affiliation(s)
- Seonghee Lim
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan, South Korea
| | - Van Gia Truong
- Division of Research and Development, TeCure, Inc., Busan, South Korea
| | - Seok Jeong
- Division of Gastroenterology, Department of Internal Medicine, Inha University School of Medicine, Inha University Hospital, Incheon, South Korea
| | - Jiho Lee
- Division of Smart Healthcare, Major of Biomedical Engineering, College of Information Technology and Convergence, Pukyong National University, Busan, South Korea
| | - Byeong-Il Lee
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan, South Korea
- Division of Smart Healthcare, Major of Human-Bio Convergence, College of Information Technology and Convergence, Pukyong National University, Busan, South Korea
| | - Hyun Wook Kang
- Industry 4.0 Convergence Bionics Engineering, Pukyong National University, Busan, South Korea
- Division of Research and Development, TeCure, Inc., Busan, South Korea
- Division of Smart Healthcare, Major of Biomedical Engineering, College of Information Technology and Convergence, Pukyong National University, Busan, South Korea
- Marine-integrated Biomedical Technology Center, Pukyong National University, Busan, South Korea
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Robinson TP, Pebror T, Krosin ME, Koniaris LG. Ablative Therapy in Non-HCC Liver Malignancy. Cancers (Basel) 2023; 15:cancers15041200. [PMID: 36831543 PMCID: PMC9954041 DOI: 10.3390/cancers15041200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 02/16/2023] Open
Abstract
Surgical extirpation of liver tumors remains a proven approach in the management of metastatic tumors to the liver, particularly those of colorectal origin. Ablative, non-resective therapies are an increasingly attractive primary therapy for liver tumors as they are generally better tolerated and result in far less morbidity and mortality. Ablative therapies preserve greater normal liver parenchyma allowing better post-treatment liver function and are particularly appropriate for treating subsequent liver-specific tumor recurrence. This article reviews the current status of ablative therapies for non-hepatocellular liver tumors with a discussion of many of the clinically available approaches.
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Affiliation(s)
- Tyler P. Robinson
- Department of Surgery, Indiana University, Indianapolis, IN 46202, USA
- Correspondence: ; Tel.: +1-312-371-8360
| | - Travis Pebror
- Department of Interventional Radiology, Indiana University, Indianapolis, IN 46202, USA
| | - Matthew E. Krosin
- Department of Interventional Radiology, Indiana University, Indianapolis, IN 46202, USA
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Nechay T, Sazhin A, Titkova S, Anurov M, Tyagunov A, Sheptunov S, Yakhutlov U, Nakhushev R, Sannikov A. Thermal Processes in Bile Ducts During Laparoscopic Cholecystectomy with Monopolar Instruments. Experimental Study Using Real-Time Intraluminal and Surface Thermography. Surg Innov 2020; 28:525-535. [PMID: 33372571 DOI: 10.1177/1553350620979829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Introduction. A significant rate of complications during laparoscopic cholecystectomy (LC) occurs due to thermal injury caused by monopolar electrosurgery (MES) equipment. Most of them manifest weeks and months after surgery with the common bile duct (CBD) and large duodenal papilla strictures, some in the early postoperative period with bile leaks. Objective. To study thermal processes occurring in the lumen and on the surface of the bile ducts during monopolar coagulation in a porcine model of LC. Methods. The temperature of the bile ducts was measured using instrumentation consisted of biliary stent with temperature sensors, which was inserted in the porcine CBD, signal amplifier, and current sense transformer. Surface temperature was measured with a scientific grade thermal camera. Cholecystectomy was performed using a standard "critical view of safety" (CVS) approach with 5 mm monopolar laparoscopic instruments. Results. Application of MES caused significant tissue heating. Lateral thermal spread and the rate of tissue heating depended on the duration of energy application and the initial tissue temperature. In 5 out of 6 experiments, the intraluminal temperature rose up to the critical threshold, and the exposure time ranged from 54 to 560 seconds. A sensor positioned at the papilla site was heated in all the experiments but still below the cell damage inducing threshold. The analysis of thermographic charts revealed the presence of the "current channeling" effect and the pedicle effect. Conclusion. There is a possibility of a direct and delayed thermal injury to the bile ducts during LC.
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Affiliation(s)
- Taras Nechay
- 64882Pirogov Russian National Research Medical University, Moscow, Russia
| | - Alexander Sazhin
- 64882Pirogov Russian National Research Medical University, Moscow, Russia
| | - Svetlana Titkova
- 64882Pirogov Russian National Research Medical University, Moscow, Russia
| | - Mikhail Anurov
- 64882Pirogov Russian National Research Medical University, Moscow, Russia
| | - Alexander Tyagunov
- 64882Pirogov Russian National Research Medical University, Moscow, Russia
| | - Sergey Sheptunov
- 54744Institute for Design Technological Informatics of the Russian Academy of Sciences, Moscow, Russia
| | - Umar Yakhutlov
- 54744Institute for Design Technological Informatics of the Russian Academy of Sciences, Moscow, Russia
| | - Rahim Nakhushev
- 54744Institute for Design Technological Informatics of the Russian Academy of Sciences, Moscow, Russia
| | - Alexander Sannikov
- 54744Institute for Design Technological Informatics of the Russian Academy of Sciences, Moscow, Russia
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Korganbayev S, Orrico A, Bianchi L, De Landro M, Wolf A, Dostovalov A, Saccomandi P. Closed-Loop Temperature Control Based on Fiber Bragg Grating Sensors for Laser Ablation of Hepatic Tissue. SENSORS 2020; 20:s20226496. [PMID: 33203048 PMCID: PMC7697476 DOI: 10.3390/s20226496] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/27/2020] [Accepted: 11/11/2020] [Indexed: 12/13/2022]
Abstract
Laser ablation (LA) of cancer is a minimally invasive technique based on targeted heat release. Controlling tissue temperature during LA is crucial to achieve the desired therapeutic effect in the organs while preserving the healthy tissue around. Here, we report the design and implementation of a real-time monitoring system performing closed-loop temperature control, based on fiber Bragg grating (FBG) spatial measurements. Highly dense FBG arrays (1.19 mm length, 0.01 mm edge-to-edge distance) were inscribed in polyimide-coated fibers using the femtosecond point-by-point writing technology to obtain the spatial resolution needed for accurate reconstruction of high-gradient temperature profiles during LA. The zone control strategy was implemented such that the temperature in the laser-irradiated area was maintained at specific set values (43 and 55 °C), in correspondence to specific radii (2 and 6 mm) of the targeted zone. The developed control system was assessed in terms of measured temperature maps during an ex vivo liver LA. Results suggest that the temperature-feedback system provides several advantages, including controlling the margins of the ablated zone and keeping the maximum temperature below the critical values. Our strategy and resulting analysis go beyond the state-of-the-art LA regulation techniques, encouraging further investigation in the identification of the optimal control-loop.
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Affiliation(s)
- Sanzhar Korganbayev
- Department of Mechanical Engineering, Politecnico di Milano Milan, 20133 Milano MI, Italy; (A.O.); (L.B.); (M.D.L.); (P.S.)
- Correspondence: ; Tel.: +39-348-776-1649
| | - Annalisa Orrico
- Department of Mechanical Engineering, Politecnico di Milano Milan, 20133 Milano MI, Italy; (A.O.); (L.B.); (M.D.L.); (P.S.)
| | - Leonardo Bianchi
- Department of Mechanical Engineering, Politecnico di Milano Milan, 20133 Milano MI, Italy; (A.O.); (L.B.); (M.D.L.); (P.S.)
| | - Martina De Landro
- Department of Mechanical Engineering, Politecnico di Milano Milan, 20133 Milano MI, Italy; (A.O.); (L.B.); (M.D.L.); (P.S.)
| | - Alexey Wolf
- Laboratory of Fiber Optics, Institute of Automation and Electrometry SB RAS, Novosibirsk 630090, Russia; (A.W.); (A.D.)
| | - Alexander Dostovalov
- Laboratory of Fiber Optics, Institute of Automation and Electrometry SB RAS, Novosibirsk 630090, Russia; (A.W.); (A.D.)
| | - Paola Saccomandi
- Department of Mechanical Engineering, Politecnico di Milano Milan, 20133 Milano MI, Italy; (A.O.); (L.B.); (M.D.L.); (P.S.)
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Saccomandi P, Marescaux J, Di Matteo FM, Quero G, Gassino R, Lapergola A, Barberio M, Schena E, Perrone G, Vallan A, Costamagna G. Laser ablation in biliary tree: analysis of the intraductal and superficial thermal effects during the treatment. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2020; 2019:162-165. [PMID: 31945869 DOI: 10.1109/embc.2019.8856313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The treatment of choice for the unresectable cholangiocarcinoma is based on biliary decompression procedures. Despite stent placement is the standard of care, it is related to well-known complications. Hence, alternative techniques were proposed. Ideally, they should guarantee an adequate intraductal disobstruction, without injuring the surrounding tissues.This pre-clinical study aims to investigate the thermal effects of the laser ablation (LA) in the biliary tree, in terms of intraductal and surrounding tissue temperature achieved with different laser settings. The common bile ducts (in their upper and lower portions) of two pigs were ablated for 6 minutes with a diode laser at 3 W and 5 W. A custom-made laser applicator was used to obtain a circumferential ablation within the ducts. The intraductal temperature (Tid) was monitored by means of a fiber Bragg grating (FBG) sensor, while an infrared thermal camera monitored the T distribution in the surrounding tissues (Tsup). A maximum T difference of 65 °C and 57 °C was evidenced between the two power settings for the Tid measured in the upper and lower ducts, respectively. The mean difference between Tid and the averaged Tsup values was evaluated. At 5 W, a difference of 37±3 °C and 44±10 °C were obtained for the upper and lower ducts, respectively. At 3 W, a T difference of 2±1 °C was obtained for the upper biliary duct, while a difference of 8±1 °C was documented for the lower duct. Based on the results obtained in this preliminary study, the possibility to equip the laser probe with temperature sensor can improve the control and the safety of the procedure; this solution will guarantee the monitoring of the treatment while preserving the lumen and the surrounding structures.
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