Fruitful first experience with an 8K ultra‐high‐definition endoscope for laparoscopic colorectal surgery

Ohigashi, Seiji; Takenaka, Takashi; Shimada, Gen; Kubota, Keiichi; Sunagawa, Hiroki; Kishida, Akihiro

doi:10.1111/ases.12638

Cited by 17 publications

(25 citation statements)

References 11 publications

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“…The 8K UHD laparoscopic camera weighed > 2 kg in 2014, but its weight was reduced to 370 g by Kairos Co. Ltd., and its commercial distribution as a medical device was approved in 2017. 11 Because the 8K laparoscope has 16 times higher resolution than a conventional high-vision laparoscope (1,920 Â 1,080 pixels), it has become possible to identify fine blood vessels and membrane structures and distinguish important nerves that were previously difficult to identify visually. 11 We used the 8K UHD laparoscopic system to examine the hepatic portal region of a child with biliary atresia who was undergoing KPE, and observed slight bile outflow.…”

Section: Discussionmentioning

confidence: 99%

“…11 Because the 8K laparoscope has 16 times higher resolution than a conventional high-vision laparoscope (1,920 Â 1,080 pixels), it has become possible to identify fine blood vessels and membrane structures and distinguish important nerves that were previously difficult to identify visually. 11 We used the 8K UHD laparoscopic system to examine the hepatic portal region of a child with biliary atresia who was undergoing KPE, and observed slight bile outflow. Anastomosis was possible at the intended site, and her postoperative course was uneventful.…”

Section: Discussionmentioning

confidence: 99%

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Advantage of Using 8K Ultra-High-Definition Television System for Kasai Portoenterostomy for Biliary Atresia

Miyagi

Ishii

Hirasawa

et al. 2021

European J Pediatr Surg Rep

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Kasai portoenterostomy (KPE) is currently the first-line treatment for biliary atresia. Many pediatric surgeons have reported that the dissection of the fibrous remnant at the porta hepatis is one of the most important components of this procedure. Furthermore, laparoscopic portoenterostomy is being increasingly used to treat biliary atresia.An advantage of laparoscopic surgery is that surgeons can more easily identify microbiliary ducts, owing to the magnification. We report the case of a 61-day-old girl on whom we performed an exploratory laparotomy and diagnosed type III biliary atresia using intraoperative cholangiography. For the first time, we performed an open KPE using an 8K ultra-high-definition television system. This allowed us to clearly view the porta hepatis and to successfully perform the portoenterostomy.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Advantage of Using 8K Ultra-High-Definition Television System for Kasai Portoenterostomy for Biliary Atresia

Miyagi

Ishii

Hirasawa

et al. 2021

European J Pediatr Surg Rep

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“…The basic premise of the 8K-UHD camera with a rigid endoscope for microscopic use is illustrated in Figure 1A and the new 8K-UHD camera with a macro lens in Figure 1B. Previous 8K-UHD images were captured using our former endoscopes design [6,7,8]. In these cases, a relay lens connects the target side to the 8K-UHD camera.…”

Section: The New 8k-uhd Camera Combined With An Optical Lensmentioning

confidence: 99%

Mechanism and design of a novel 8K ultra-high-definition video microscope for microsurgery

Yamashita

Kobayashi

2021

Heliyon

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The practical application of microscopes using 8K ultra-high definition (UHD) technology is progressing. However, due to insufficiencies in factors such as luminous intensity and stereopsis, it has not been possible to achieve sufficient image quality for close observation of submillimeter order microlymphatic anastomosis using a combination of 8K-UHD cameras with a rigid endoscope. We have improved the quality of microsurgery by the introduction of a new heads up 8K-UHD surgical system. Herein, we show the mechanisms of this next-generation technology that makes optical improvements to the electronic image input data, resolving the initial drawback. We have developed a new 8K-UHD digital microscope system with digital zooming to enable maximum 300X magnification of the surgical field. This system has specific lighting settings for shadows dropped in surgical field to expand the three-dimensional effect while still being a monocular camera. The original mechanism and design enable the increase of the depth of field with optimal angles between the imaging direction and approaching direction towards the surgical field. Assessment during a pre-clinical trial using rats demonstrated that it is possible to perform microlymphatic anastomosis in a heads-up position with a 70-inch 8K-UHD monitor and the 8K-UHD monocular camera system. Performing supermicrosurgery is difficult with conventional surgical microscopes. Our results illustrate the application of this new 8K-UHD microscope system to this new field.

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“…In 2014, the first laparoscopic cholecystectomy procedure using 8K UHD/2K laparoscopy was reported [ 2 ]. In the recent years, the application of 8K UHD laparoscopy has been extended to various operations, including the laparoscopic treatment of colorectal cancer [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

A comparison of laparoscopic procedures performed by novice medical students using 8K ultra-high-definition/two-dimensional and 2K high-definition/three-dimensional monitors

et al. 2021

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Purpose 8K Ultra-high-definition (UHD) imaging has been developed in accordance with the progression of imaging technologies. We evaluated laparoscopic procedures performed by novice medical students using 2K/two-dimensional (2D), 2K/three-dimensional (3D) and 8K/2D monitors, with a particular focus on depth perception. Methods Nine medical students were enrolled. They performed two tasks using 2K/2D, 2K/3D and 8K/2D monitors. In Task 1, they were asked to grasp three metal rods with forceps using each hand. In Task 2, they were asked to grasp a metal rod with forceps held in the right hand, pass the metal rod through a metal ring and transfer it to their left hand. Results In Task 1, when performed with the dominant hand, the procedures performed using 2K/3D took a significantly shorter time than those performed using 8K/2D (P = 0.04). However, there was no significant difference among the three groups in the time required for procedures performed by the non-dominant hand. In Task 2, the procedure time with 2K/2D was significantly longer than that with 2K/3D or 8K/2D (P = 0.02). Conclusion 2K/3D showed superior utility to 8K/2D for performing forceps procedures using the dominant hand. However, when the movement of both hands was coordinated (“bi-hand coordination”), the laparoscopic procedures were performed almost as deftly with 8K/2D and 2K/3D.

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Fruitful first experience with an 8K ultra‐high‐definition endoscope for laparoscopic colorectal surgery

Cited by 17 publications

References 11 publications

Advantage of Using 8K Ultra-High-Definition Television System for Kasai Portoenterostomy for Biliary Atresia

Advantage of Using 8K Ultra-High-Definition Television System for Kasai Portoenterostomy for Biliary Atresia

Mechanism and design of a novel 8K ultra-high-definition video microscope for microsurgery

A comparison of laparoscopic procedures performed by novice medical students using 8K ultra-high-definition/two-dimensional and 2K high-definition/three-dimensional monitors

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