https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/166 2025-12-24T15:28:20Z https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/64145 Title: Imaging peritoneal blood vessels through optical coherence tomography angiography for laparoscopic surgery Authors: Lee, Minsuk; Bang, Hyeonjin; Lee, Eungjang; Park, Sungsoo; Yoo, Hongki; Oh, Wang-yuhl; Lee, Seungrag Abstract: Laparoscopic surgery presents challenges in identifying blood vessels due to lack of tactile feedback. The image-guided laparoscopic surgical tool (IGLaST) integrated with optical coherence tomography (OCT) has potential for in vivo blood vessel imaging; however, distinguishing vessels from surrounding tissue remains a challenge. In this study, we propose utilizing an inter-A-line intensity differentiation-based OCT angiography (OCTA) to improve visualization of blood vessels. By evaluating a tissue phantom with varying flow speeds, we optimized the system's blood flow imaging capabilities in terms of minimum detectable flow and contrast-to-noise ratio. In vivo experiments on rat and porcine models, successfully visualized previously unidentified blood vessels and concealed blood flows beneath the 1 mm depth peritoneum. Qualitative comparison of various OCTA algorithms indicated that the intensity differentiation-based algorithm performed best for our application. We believe that implementing IGLaST with OCTA can enhance surgical outcomes and reduce procedure time in laparoscopic surgeries. This study introduces the Image-Guided Laparoscopic Surgical Tool (IGLaST) combined with Optical Coherence Tomography Angiography (OCTA) for real-time blood vessel imaging during laparoscopic surgery. Testing on tissue phantoms and in vivo experiments on animal models demonstrated successful identification of hidden blood vessels beneath peritoneum. The integration of IGLaST with OCTA shows promise for improving laparoscopic surgical outcomes.image 2024-01-01T00:00:00Z https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/64428 Title: A NOVEL LAPAROSCOPIC ARTICULATING DEVICE FOR LAPAROSCOPIC SLEEVE GASTRECTOMY PLUS DUODENOJEJUNAL BYPASS IN KOREAN OBESE PATIENTS Authors: Lee, Inyoung; Lee, Chang Min Abstract: Background/Objectives For surgical treatment of severely obese patients in South Korea, various bariatric surgery options are available; one of the methods has recently gained interest among foregut surgeons: the sleeve gastrectomy combined with a duodenojejunal bypass. (SG-DJB) Also, a new multi degree-of-freedom (DOF) articulating device, the ArtiSential® device (LivsMed, Seongnam, Korea), emerged to assist scrupulous control during laparoscopic surgeries. Here, we present ten cases of utilizing this device for severely obese patients undergoing SG-DJB. Materials and Methods Between May 2020 and August 2021, we performed laparoscopic SG-DJB using the laparoscopic articulating instruments, ArtiSential® device (LivsMed, Seongnam, Korea) for ten severely obese patients. We used the ArtiSential dissector for tunneling under the duodenum and the ArtiSential needle-holder for performing duodenojejunal anastomosis. Results All operations were successfully completed by laparoscopy. There was one morbidity case, in which the patient underwent the postoperative bleeding from a branch of gastroduodenal artery. There was no mortality. Conclusion Even though the operator had no experience in sleeve gastrectomy plus DJB, it was feasible to perform this operation using ArtiSential device. However, to reach the standardization of this procedure, laparoscopic articulating instruments need to be evolved for easy application. 202308-01-01T00:00:00Z https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/63824 Title: Effectiveness of a personalized digital exercise and nutrition-based rehab program for patients with gastric cancer after surgery: Study protocol for a randomized controlled trial Authors: Kim, Inah; Lim, Ji Young; Kim, Jong Kwang; Lee, Jun Ho; Sohn, Tae Sung; Park, Sungsoo; Kang, Seok Ho; Lee, Ji Youl; Hwang, Ji Hye Abstract: Background Patients with gastric cancer often encounter impaired quality of life and reduced tolerability to adjuvant treatments after surgery. Weight preservation is crucial for the overall prognosis of these patients, and exercise and supplemental nutrition play the main role. This study is the first randomized clinical trial to apply personalized, treatment stage-adjusted digital intervention with wearable devices in gastric cancer rehabilitation intervention for 12 months, commencing immediately after surgery.Methods This is a prospective, multicenter, two-armed, randomized controlled trial and aims to recruit 324 patients from two hospitals. Patients will be randomly allocated to two groups for 1 year of rehabilitation, starting immediately after the operation: a personalized digital therapeutic (intervention) group and a conventional education-based rehabilitation (control) group. The primary objective is to clarify the effect of mobile applications and wearable smart bands in reducing weight loss in patients with gastric cancer. The secondary outcomes are quality of life measured by the EORTC-QLQ-C30 and STO22; nutritional status by mini nutrition assessment; physical fitness level measured by grip strength test, 30-s chair stand test and 2-min walk test; physical activity measured by IPAQ-SF; pain intensity; skeletal muscle mass; and fat mass. These measurements will be performed on enrollment and at 1, 3, 6, and 12 months thereafter.Conclusions Digital therapeutic programs include exercise and nutritional interventions modified by age, body mass index, surgery type and postoperative days. Thus, expert intervention is pivotal for precise and safe calibration of this program. 2023-07-01T00:00:00Z https://scholarworks.korea.ac.kr/kumedicine/handle/2021.sw.kumedicine/63561 Title: Single-port plus one port subcostal robotic-assisted minimally invasive McKewon esophagectomy using the daVinci Single-Port surgical system Authors: Lee, Jun Hee; Hong, Jeong In; Jang, You Jin; Kim, Hyun Koo Abstract: [No abstract available] 2023-06-01T00:00:00Z