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  1. Article

    Open Access

    Deep learning-based prediction of post-pancreaticoduodenectomy pancreatic fistula

    Postoperative pancreatic fistula is a life-threatening complication with an unmet need for accurate prediction. This study was aimed to develop preoperative artificial intelligence-based prediction models. Pat...

    Woohyung Lee, Hyo Jung Park, Hack-** Lee, Ki Byung Song in Scientific Reports (2024)

  2. No Access

    Article

    Association between visceral obesity and tumor recurrence in hepatocellular carcinoma recipients undergoing liver transplantation

    Excessive visceral obesity in recipients of living donor liver transplantation (LDLT) is associated with mortality, and a recent study reported the correlation between visceral adiposity of male LDLT recipient...

    Ji-Hoon Sim, Kyung-Won Kim, YouSun Ko, Young-** Moon in International Journal of Obesity (2023)

  3. No Access

    Article

    Impact of Sarcopenia on Clinical Course of Inflammatory Bowel Disease in Korea

    Reduced body muscle mass is a poor prognostic factor for inflammatory bowel disease (IBD). In this study, we investigated the prevalence of sarcopenia at diagnosis and its clinical significance in Korean patie...

    Kwangwoo Nam, Jae Yong Lee, Yousun Ko, Kyung Won Kim in Digestive Diseases and Sciences (2023)

  4. Article

    Open Access

    The effects of muscle mass and quality on mortality of patients with acute kidney injury requiring continuous renal replacement therapy

    This study examined the effects of muscle mass on mortality in patients with acute kidney injury requiring continuous renal replacement therapy. It was conducted in eight medical centers between 2006 and 2021....

    Jiyun Jung, Jangwook Lee, Jeong-Hoon Lim, Yong Chul Kim, Tae Hyun Ban in Scientific Reports (2023)

  5. No Access

    Article

    Transient severe motion artifacts on gadoxetic acid–enhanced MRI: risk factor analysis in 2230 patients

    To determine risk factors for transient severe motion (TSM) artifact on arterial phase of gadoxetic acid–enhanced MRI using a large cohort.

    Eun Bee Jang, Dong Wook Kim, Sang Hyun Choi, Seung Baek Hong in European Radiology (2022)

  6. Article

    Open Access

    Development and validation of an ensemble artificial intelligence model for comprehensive imaging quality check to classify body parts and contrast enhancement

    Despite the dramatic increase in the use of medical imaging in various therapeutic fields of clinical trials, the first step of image quality check (image QC), which aims to check whether images are uploaded a...

    Seongwon Na, Yu Sub Sung, Yousun Ko, Youngbin Shin, Junghyun Lee in BMC Medical Imaging (2022)

  7. Article

    Open Access

    Publisher Correction: Automated segmentation of the fractured vertebrae on CT and its applicability in a radiomics model to predict fracture malignancy

    Taeyong Park, Min A Yoon, Young Chul Cho, Su Jung Ham, Yousun Ko in Scientific Reports (2022)

  8. Article

    Open Access

    Automated segmentation of the fractured vertebrae on CT and its applicability in a radiomics model to predict fracture malignancy

    Although CT radiomics has shown promising results in the evaluation of vertebral fractures, the need for manual segmentation of fractured vertebrae limited the routine clinical implementation of radiomics. The...

    Taeyong Park, Min A Yoon, Young Chul Cho, Su Jung Ham, Yousun Ko in Scientific Reports (2022)

  9. Article

    Open Access

    A reliable and robust method for the upper thigh muscle quantification on computed tomography: toward a quantitative biomarker for sarcopenia

    We aimed to evaluate the feasibility of the upper thigh level as a landmark to measure muscle area for sarcopenia assessment on computed tomography (CT).

    Yousun Ko, Youngbin Shin, Yu Sub Sung, Jiwoo Lee in BMC Musculoskeletal Disorders (2022)

  10. No Access

    Article

    Final diagnosis and patient disposition following equivocal results on 2-mSv CT vs. conventional-dose CT in adolescents and young adults with suspected appendicitis: a post hoc analysis of large pragmatic randomized trial data

    To compare 2-mSv CT and conventional-dose CT (CDCT, typically 7–8 mSv) regarding final diagnosis and patient disposition following equivocal CT results in adolescents and young adults with suspected appendicitis.

    Jungheum Cho, Seungjae Lee, Hooney Daniel Min, Hae Young Kim in European Radiology (2021)

  11. Article

    Open Access

    Development of a fully automatic deep learning system for L3 selection and body composition assessment on computed tomography

    As sarcopenia research has been gaining emphasis, the need for quantification of abdominal muscle on computed tomography (CT) is increasing. Thus, a fully automated system to select L3 slice and segment muscle...

    Jiyeon Ha, Taeyong Park, Hong-Kyu Kim, Youngbin Shin, Yousun Ko in Scientific Reports (2021)

  12. Article

    Open Access

    The role of muscle depletion and visceral adiposity in HCC patients aged 65 and over undergoing TACE

    The incidence of hepatocellular carcinoma (HCC) has been increasing among the elderly populations. Trans-arterial chemoembolization (TACE), a widely used first-line non-curative therapy for HCCs is an issue in...

    Jihye Lim, Kyung Won Kim, Yousun Ko, Il-Young Jang, Yung Sang Lee in BMC Cancer (2021)

  13. No Access

    Article

    Intermuscular fat density as a novel prognostic factor in breast cancer patients treated with adjuvant chemotherapy

    Body composition, including sarcopenia and fat parameters, has received much attention as a prognostic factor in breast cancer.

    Ye Won Jeon, Hyung Soon Park, Yousun Ko in Breast Cancer Research and Treatment (2021)

  14. Article

    Open Access

    Pancreatic cancer induces muscle wasting by promoting the release of pancreatic adenocarcinoma upregulated factor

    Cancer cachexia is a highly debilitating condition characterized by weight loss and muscle wasting that contributes significantly to the morbidity and mortality of pancreatic cancer. The factors that induce ca...

    Wonbeak Yoo, Hyunji Choi, Young Hoon Son, Jaemin Lee in Experimental & Molecular Medicine (2021)

  15. No Access

    Article

    Diagnostic sensitivity and specificity of 2-mSv CT vs. conventional-dose CT in adolescents and young adults with suspected appendicitis: post hoc subgroup analysis of the LOCAT data

    To test whether the difference in sensitivity or specificity between 2-mSv CT and conventional-dose CT (CDCT) for the diagnosis of appendicitis differs across subgroups of adolescents and young adults with sus...

    Yousun Ko, Woo Joo Lee, Ji Hoon Park, Hae Young Kim, Ji Ye Sim in European Radiology (2020)

  16. Article

    Open Access

    Development of an algorithm to automatically compress a CT image to visually lossless threshold

    To develop an algorithm to predict the visually lossless thresholds (VLTs) of CT images solely using the original images by exploiting the image features and DICOM header information for JPEG2000 compression a...

    Chang-Mo Nam, Kyong Joon Lee, Yousun Ko, Kil Joong Kim, Bohyoung Kim in BMC Medical Imaging (2018)

  17. Article

    Open Access

    Comparison of strain and shear wave elastography for qualitative and quantitative assessment of breast masses in the same population

    We investigated addition of strain and shear wave elastography to conventional ultrasonography for the qualitative and quantitative assessment of breast masses; cut-off points were determined for strain ratio,...

    Hyo ** Kim, Sun Mi Kim, Bohyoung Kim, Bo La Yun, Mijung Jang in Scientific Reports (2018)

  18. No Access

    Article

    Comparison of filtered back projection and iterative reconstruction in diagnosing appendicitis at 2-mSv CT

    To compare radiologists’ diagnostic performance and confidence, and subjective image quality between filtered back projection (FBP) and iterative reconstruction (IR) at 2-mSv appendiceal CT.

    Ji Hoon Park, Bohyoung Kim, Mi Sung Kim, Hyuk Jung Kim, Yousun Ko in Abdominal Radiology (2016)

  19. No Access

    Article

    The radiologic technologists’ health study in South Korea: study design and baseline results

    To describe the study design, methods, and baseline results of a prospective cohort of radiologic technologists which we have initiated in South Korea.

    Won ** Lee, Mina Ha, Seung-sik Hwang in International Archives of Occupational and… (2015)

  20. No Access

    Article

    A Speculative Parallel DFA Membership Test for Multicore, SIMD and Cloud Computing Environments

    We present techniques to parallelize membership tests for Deterministic Finite Automata (DFAs). Our method searches arbitrary regular expressions by matching multiple bytes in parallel using speculation. We pa...

    Yousun Ko, Minyoung Jung, Yo-Sub Han in International Journal of Parallel Programm… (2014)