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Soon Ho Um 5 Articles
Feasibility of Wearable Display Glasses for Medical Students in the Endoscopy Room
Kang Won Lee, Hyuk Soon Choi, Hoon Jai Chun, Jae Min Lee, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Yoon Tae Jeen, Soon Ho Um, Hong Sik Lee
Clin Endosc 2021;54(5):694-700.   Published online March 15, 2021
DOI: https://doi.org/10.5946/ce.2020.246
AbstractAbstract PDFPubReaderePub
Background
/Aims: Several attempts have been made to incorporate smart glasses in the medical field. We applied wearable display glasses to show the position of an observer during endoscopy and compared students’ responses between the conventional and new methods.
Methods
We surveyed 28 medical students regarding the use of wearable display devices. The students used wearable display glasses to observe an endoscopic procedure and answered the prepared questionnaire. Their collected responses were analyzed for statistical correlations between each variable.
Results
The survey of medical students revealed disadvantages including dizziness (dissatisfied and very dissatisfied: 21.5%) and eye fatigue (25% dissatisfied) and advantages including concentration (satisfied and very satisfied: 57.2%) and securing patient rights (71.4%). The students showed more positive than negative reviews regarding the new devices (32.1% vs. 21.5%).
Conclusions
We investigated the advantages and disadvantages of viewing the endoscope image with new wearable display glasses compared to the conventional method using the survey to record user experience. The results revealed relatively positive responses from the medical students in the survey. If the new device compensates for some shortcomings, its use in the endoscopy room will be feasible.

Citations

Citations to this article as recorded by  
  • A remote clinical clerkship program for severe COVID-19 in ICU using smart glasses: questionnaire survey
    Nobuyuki Nosaka, Hideo Yamanouch, Kazuki Takada, Kenji Wakabayashi
    Journal of the Japanese Society of Intensive Care Medicine.2023; 30(4): 261.     CrossRef
  • Smart Glasses to Facilitate Ultrasound Guided Peripheral Intravenous Access in the Simulation Setting for Thai Emergency Medical Service Providers
    Kamonwon Ienghong, Lap Woon Cheung, Pornpawit Wongwan, Korakot Apiratwarakul
    Journal of Multidisciplinary Healthcare.2023; Volume 16: 2201.     CrossRef
  • 3,826 View
  • 99 Download
  • 1 Web of Science
  • 2 Crossref
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Novel Ablation Therapy Using Endoscopic Irreversible Electroporation in the Bile Duct: A Pilot Animal Study
Kang Won Lee, Jae Min Lee, Hyuk Soon Choi, Eun Sun Kim, Bora Keum, Yeon Seok Seo, Yoon Tae Jeen, Soon Ho Um, Hong Sik Lee, Hoon Jai Chun, Chang Duck Kim, Chi Hyuk Oh, Hong Bae Kim
Clin Endosc 2021;54(3):413-419.   Published online October 20, 2020
DOI: https://doi.org/10.5946/ce.2020.126
AbstractAbstract PDFPubReaderePub
Background
/Aims: Irreversible electroporation (IRE) is a relatively new ablation method. However, the application of IRE ablation in the treatment of biliary disease has not been attempted. A minimally invasive approach using endoscopic retrograde cholangiopancreatography (ERCP) can be a novel therapeutic modality for IRE ablation. In this study, we aimed to investigate the feasibility of endoscopic IRE for the biliary tract using an animal model.
Methods
A new catheter-type electrode was developed for endoscopic IRE ablation of the biliary tract. We performed ERCP and endoscopic IRE ablations in the normal common bile duct of Yorkshire pigs. The experimental setting of IRE was 500 V/cm (50 pulses, 100-µs length). The animals were sacrificed after 24 hr, and the ablated bile duct was examined.
Results
Well-demarcated focal color changes were observed on the mucosa of the common bile duct. The depth of change after IRE was confined to the mucosal and submucosal layers. Apoptotic changes in the bile duct were observed only around the IRE ablation area. Immunohistochemistry assay showed cell death in the bile duct along the electrode.
Conclusions
Endoscopic IRE ablation using ERCP was successfully performed in the common bile duct. It can be a potential option for the treatment of biliary tumors.

Citations

Citations to this article as recorded by  
  • Balloon‐assisted laser application for endoscopic treatment of biliary stricture
    Seonghee Lim, Van Gia Truong, Seok Jeong, Jiho Lee, Byeong‐il Lee, Hyun Wook Kang
    Lasers in Surgery and Medicine.2023; 55(10): 912.     CrossRef
  • Biliary complications and efficacy after ablation of peribiliary tumors using irreversible electroporation (IRE) or radiofrequency ablation (RFA)
    Somrach Thamtorawat, Rujira Patanawanitkul, Satit Rojwatcharapibarn, Walailak Chaiyasoot, Trongtum Tongdee, Jirawadee Yodying, Sukrit Sorotpinya
    International Journal of Hyperthermia.2022; 39(1): 751.     CrossRef
  • Large Animal Models in Pancreas and Biliary Disease
    Seok Jeong, Jin-Seok Park, Don Haeng Lee
    The Korean Journal of Gastroenterology.2021; 77(3): 99.     CrossRef
  • Comparison of four endoluminal radiofrequency ablation devices and four power generators in an ex vivo bovine liver model
    Stephan Rheinheimer, Anna Jacobsen, Philipp Mayer, Hans-Ulrich Kauczor, Andreas Mahnken
    World Academy of Sciences Journal.2021;[Epub]     CrossRef
  • 5,169 View
  • 161 Download
  • 3 Web of Science
  • 4 Crossref
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Is There a Change in Patient Preference for a Female Colonoscopist during the Last Decade in Korea?
Jung Min Lee, Eun Sun Kim, Hoon Jai Chun, In Kyung Yoo, Jae Min Lee, Seung Han Kim, Hyuk Soon Choi, Bora Keum, Yeon Seok Seo, Hong Sik Lee, Yoon Tae Jeen, Jong-Jae Park, Sang Woo Lee, Soon Ho Um, Chang Duck Kim
Clin Endosc 2018;51(1):72-79.   Published online October 10, 2017
DOI: https://doi.org/10.5946/ce.2017.057
AbstractAbstract PDFPubReaderePub
Background
/Aims: Patients may feel embarrassed during colonoscopy. Our study aimed to assess changes in patient preference, over the past decade, for the sex of their colonoscopist.
Methods
Prospective studies were performed at a single health center from July to September 2008, and from July to September 2016. Subjects included colonoscopy patients (2008: 354, 2016: 304) who were asked to complete a questionnaire before colonoscopy.
Results
In 2016, 69 patients (24.9%) expressed a sex preference, compared with 46 patients (14.6%) in 2008. By 2016, female patient preference for a female colonoscopist had significantly increased to 95% (odds ratio [OR], 2.678; 95% confidence interval [CI], 1.418– 5.057; P=0.002). In multivariate analysis, patient sex (OR, 4.404; P=0.000), patient age (OR, 0.977; 95% CI, 0.961–0.992; P=0.004), and year of procedure (OR, 1.674; 95% CI, 1.028–2.752) were statistically significant factors in sex preference. Between 2008 and 2016, female patients preferred a female colonoscopist because of embarrassment. Male patients also preferred a male colonoscopist, and the primary reason shifted from expertise to patient embarrassment (2008: 29%, 2016: 63%).
Conclusions
Patients have an increased gender preference for the colonoscopist because of embarrassment. Taking this into account can increase patient satisfaction during colonoscopy.

Citations

Citations to this article as recorded by  
  • Screening Perspectives: The Role of Colorectal Cancer Awareness in Shaping Attitudes Toward Colonoscopy in Palestine
    Mohamedraed Elshami, Maram Albandak, Mohammed Alser, Ibrahim Al-Slaibi, Mohammed Ayyad, Mohammad F. Dwikat, Shoruq A. Naji, Balqees M. Mohamad, Wejdan S. Isleem, Adela Shurrab, Bashar Yaghi, Yahya Ayyash Qabaja, Fatma K. Hamdan, Raneen R. Sweity, Remah T.
    JCO Global Oncology.2024;[Epub]     CrossRef
  • Gender of endoscopist and endoscopy staff: Patient preference
    Mayank Jain
    Indian Journal of Gastroenterology.2023; 42(1): 143.     CrossRef
  • Sex/gender differences in gastrointestinal endoscopy from the perspective of patients and gastroenterologists
    Nayoung Kim
    Clinical Endoscopy.2023; 56(3): 268.     CrossRef
  • Canadian Gastroenterology Career Pathway Experiences: Exploring the Gender Divide
    Noor Jawaid, Monica Boctor, Jordan LoMonaco, Natasha Bollegala
    Journal of the Canadian Association of Gastroenterology.2022; 5(4): 177.     CrossRef
  • Intentions to undergo primary screening with colonoscopy under the National Cancer Screening Program in Korea
    Kyeongmin Lee, Haejoo Seo, Sunho Choe, Seung-Yong Jeong, Ji Won Park, Mina Suh, Aesun Shin, Kui Son Choi, Filipe Prazeres
    PLOS ONE.2021; 16(2): e0247252.     CrossRef
  • Does provider gender matter in endoscopy? An international perspective
    Pascale Anglade, Halah Ibrahim, Sawsan Abdel-Razig
    Gastrointestinal Endoscopy.2021; 93(5): 1160.     CrossRef
  • Identifying Gender Barriers for Colorectal Cancer Screening and Assessing the Need for a Multigender Endoscopy Team: A Prospective Multicenter Study
    Harshit S. Khara, Darshan Suthar, Marika Bergenstock, Andrea Berger, Jessica L. McKee, Dana Stewart, Samuel R. Theis, Michael Komar, Amitpal S. Johal, Diego R. Valencia Chavez, William B. Hale, Rakhee Mangla
    American Journal of Gastroenterology.2021; 116(8): 1646.     CrossRef
  • Unique perspective of Muslim patients on gender preference for GI endoscopists: a multicenter survey
    Lubna Kamani, Nazish Butt, Farheen Taufiq, Ana Garcia de Paredes, Elizabeth Rajan
    Gastrointestinal Endoscopy.2021; 94(6): 1110.     CrossRef
  • Using Etomidate and Midazolam for Screening Colonoscopies Results in More Stable Hemodynamic Responses in Patients of All Ages
    Jung Min Lee, Geeho Min, Bora Keum, Jae Min Lee, Seung Han Kim, Hyuk Soon Choi, Eun Sun Kim, Yeon Seok Seo, Yoon Tae Jeen, Hoon Jai Chun, Hong Sik Lee, Soon Ho Um, Chang Duck Kim
    Gut and Liver.2019; 13(6): 649.     CrossRef
  • 6,292 View
  • 123 Download
  • 8 Web of Science
  • 9 Crossref
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Feasibility of Obtaining Quantitative 3-Dimensional Information Using Conventional Endoscope: A Pilot Study
Jong Jin Hyun, Hoon Jai Chun, Bora Keum, Yeon Seok Seo, Yong Sik Kim, Yoon Tae Jeen, Hong Sik Lee, Soon Ho Um, Chang Duck Kim, Ho Sang Ryu, Jong-Wook Lim, Dong-Gi Woo, Young-Joong Kim, Myo-Taeg Lim
Clin Endosc 2012;45(3):182-188.   Published online August 22, 2012
DOI: https://doi.org/10.5946/ce.2012.45.3.182
AbstractAbstract PDFPubReaderePub
Background/Aims

Three-dimensional (3D) imaging is gaining popularity and has been partly adopted in laparoscopic surgery or robotic surgery but has not been applied to gastrointestinal endoscopy. As a first step, we conducted an experiment to evaluate whether images obtained by conventional gastrointestinal endoscopy could be used to acquire quantitative 3D information.

Methods

Two endoscopes (GIF-H260) were used in a Borrmann type I tumor model made of clay. The endoscopes were calibrated by correcting the barrel distortion and perspective distortion. Obtained images were converted to gray-level image, and the characteristics of the images were obtained by edge detection. Finally, data on 3D parameters were measured by using epipolar geometry, two view geometry, and pinhole camera model.

Results

The focal length (f) of endoscope at 30 mm was 258.49 pixels. Two endoscopes were fixed at predetermined distance, 12 mm (d12). After matching and calculating disparity (v2-v1), which was 106 pixels, the calculated length between the camera and object (L) was 29.26 mm. The height of the object projected onto the image (h) was then applied to the pinhole camera model, and the result of H (height and width) was 38.21 mm and 41.72 mm, respectively. Measurements were conducted from 2 different locations. The measurement errors ranged from 2.98% to 7.00% with the current Borrmann type I tumor model.

Conclusions

It was feasible to obtain parameters necessary for 3D analysis and to apply the data to epipolar geometry with conventional gastrointestinal endoscope to calculate the size of an object.

Citations

Citations to this article as recorded by  
  • Three-dimensional light-field microendoscopy with a GRIN lens array
    Tara M. Urner, Andrew Inman, Benjamin Lapid, Shu Jia
    Biomedical Optics Express.2022; 13(2): 590.     CrossRef
  • 3D light-field endoscopic imaging using a GRIN lens array
    Changliang Guo, Tara Urner, Shu Jia
    Applied Physics Letters.2020;[Epub]     CrossRef
  • Current and emerging robotic assisted intervention for Notes
    Siyang Zuo, Shuxin Wang
    Expert Review of Medical Devices.2016; 13(12): 1095.     CrossRef
  • Application of robotics in gastrointestinal endoscopy: A review
    Baldwin Po Man Yeung
    World Journal of Gastroenterology.2016; 22(5): 1811.     CrossRef
  • Quantitative analysis of velopharyngeal movement using a stereoendoscope: accuracy and reliability of range images
    Asuka Nakano, Katsuaki Mishima, Ruriko Shiraishi, Yoshiya Ueyama
    Computer Aided Surgery.2015; 20(1): 29.     CrossRef
  • The Evolution of the Conventional Endoscope in an Era of 3-Dimensional Technology
    Geun Am Song
    Clinical Endoscopy.2012; 45(3): 181.     CrossRef
  • 5,902 View
  • 49 Download
  • 6 Crossref
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Comparison on the Efficacy of Disinfectants Used in Automated Endoscope Reprocessors: PHMB-DBAC versus Orthophthalaldehyde
Sun Young Kim, Hong Sik Lee, Jong Jin Hyun, Min Ho Seo, Sun Young Yim, Ha Young Oh, Hye Sook Kim, Bora Keum, Yeon Seok Seo, Yong Sik Kim, Yoon Tae Jeen, Hoon Jai Chun, Soon Ho Um, Chang Duck Kim, Ho Sang Ryu
Clin Endosc 2011;44(2):109-115.   Published online December 31, 2011
DOI: https://doi.org/10.5946/ce.2011.44.2.109
AbstractAbstract PDFPubReaderePub
Background/Aims

Since endoscopes are reusable apparatus classified as semicritical item, thorough reprocessing to achieve high-level disinfection is of utmost importance to prevent spread of infection. To improve disinfection efficacy and safety, disinfectants and endoscope reprocessors are continuously evolving. This study aimed to compare the efficacy of the combination of polyhexamethylenebiguanide hydrochloride-alkyldimethylbenzylammonium chloride (PHMB-DBAC) and orthophthalaldehyde (OPA) used respectively in ultrasonographic cleaning incorporated automated endoscope reprocessors: COOLENDO (APEX Korea) or OER-A (Olympus Optical).

Methods

A total of 86 flexible upper endoscopes were randomly reprocessed with either COOLENDO/PHMB-DBAC or OER-A/OPA. Culture samplings were done at two sites (endoscope tip and working channel) which were later incubated on blood agar plate. Bacterial colonies were counted and identified.

Results

The culture-positive rate at the endoscope tip and working channel was 0% and 2.33% for COOLENDO/PHMB-DBAC and 4.65% and 0% for OER-A/OPA. Staphylococcus hominis was cultured from one endoscope reprocessed with COOLENDO/PHMB-DBAC and Pseudomonas putida was isolated from two endoscopes reprocessed with OER-A/OPA.

Conclusions

The reprocessing efficacy of COOLENDO/PHMB-DBAC was non-inferior to that of OER-A/OPA (p=0.032; confidence interval, -0.042 to 0.042). During the study period, significant side effect of PHMB-DBAC was not observed.

Citations

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  • Recommendations and guidelines for endoscope reprocessing: Current position statement of digestive endoscopic society of Taiwan
    Wei-Kuo Chang, Chen-Ling Peng, Yen-Wei Chen, Cheuk-Kay Sun, Chieh-Chang Chen, Tao-Chieh Liu, Yin-Yi Chu, I-Fang Tsai, Chen-Shuan Chung, Hsiao-Fen Lin, Fang-Yu Hsu, Wei-Chen Tai, Hsi-Chang Lee, Hsu-Heng Yen, E-Ming Wang, Shu-Hui Chen, Cheng-Hsin Chu, Ming-
    Journal of Microbiology, Immunology and Infection.2024; 57(2): 211.     CrossRef
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    Fatimah M. Alzahrani, Stephen G. Yeates, Michelle Webb, Hind Ali Alghamdi
    Asian Journal of Chemistry.2020; 32(6): 1491.     CrossRef
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    Van Nam Tran, Chakradhar Dasagrandhi, Van Gia Truong, Young-Mog Kim, Hyun Wook Kang, Michael R. Hamblin
    PLOS ONE.2018; 13(8): e0202821.     CrossRef
  • Comparison of the efficacy of disinfectants in automated endoscope reprocessors for colonoscopes: tertiary amine compound (Sencron2®) versus ortho-phthalaldehyde (Cidex®OPA)
    Hyun Il Seo, Dae Sung Lee, Eun Mi Yoon, Min-Jung Kwon, Hyosoon Park, Yoon Suk Jung, Jung Ho Park, Chong Il Sohn, Dong Il Park
    Intestinal Research.2016; 14(2): 178.     CrossRef
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    Ji Kon Ryu, Eun Young Kim, Kwang An Kwon, Il Ju Choi, Ki Baik Hahm
    Clinical Endoscopy.2015; 48(5): 351.     CrossRef
  • Recent Update of Gastrointestinal Endoscope Reprocessing
    Kyong Hee Hong, Yun Jeong Lim
    Clinical Endoscopy.2013; 46(3): 267.     CrossRef
  • Steps of Reprocessing and Equipments
    Yong Kook Lee, Jeong Bae Park
    Clinical Endoscopy.2013; 46(3): 274.     CrossRef
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    N. Govindji, P. Wills, M. Upton, N. Tirelli, S. Yeates, M. Webb
    Journal of Applied Microbiology.2013; 114(5): 1285.     CrossRef
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