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Yujeong Sim

Korea University · Medicine

About the Lab

Professor Yujeong Sim's research lab specializes in medical imaging and artificial intelligence, focusing on improving diagnostic accuracy and image quality in musculoskeletal and spinal disorders. The lab develops and validates AI-driven tools for detecting fractures, assessing bone age, and synthesizing high-quality MRI from CT scans to enhance diagnostic confidence in patients where MRI is contraindicated or unavailable. A key focus is on reducing metal artifacts in CT imaging and optimizing image reconstruction techniques for better clinical outcomes. The lab also investigates advanced interventional radiology techniques, particularly in spinal pain management using image-guided epidural steroid injections.

medical imagingartificial intelligencespinal disordersimage reconstructionfracture detection

Research Overview

Papers
42
Total Citations
431
Papers (5y)
16
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
16total
2022
2023
2024
2025
2026
Citations per year (5y)
117total
20222023202420252026

Selected Papers

15
1
Review|63 citations·2013
Lymphoma Affecting the Breast: A Pictorial Review of Multimodal Imaging Findings
Euddeum Shim, Sung Eun Song, Bo Kyoung Seo, Young‐Sik Kim, Gil Soo Son
SJR Q2Journal of Breast CancerOA

Hematological malignancies rarely affect the breast, and the majority of those that do are lymphomas. In this review, we describe the clinical aspects and multimodal imaging findings of breast lymphoma. We also illustrate the key clinical and radiological findings that allow it to be distinguished from various other malignant and benign diseases of the breast. Breast lymphoma manifests as a breast mass, a change in the subcutaneous tissue or the skin, or enlargement of the associated lymph node

Pathology and Forensic MedicineMedicine
2
Review|62 citations·2016
Fluoroscopically Guided Epidural Injections of the Cervical and Lumbar Spine
Euddeum Shim, Joon Woo Lee, Eugene Lee, Joong Mo Ahn, Yusuhn Kang, Heung Sik Kang
SJR Q1Radiographics

Advances in imaging and the development of injection techniques have enabled spinal intervention to become an important tool in managing chronic spinal pain. Epidural steroid injection (ESI) is one of the most widely used spinal interventions; it directly delivers drugs into the epidural space to relieve pain originating from degenerative spine disorders—central canal stenoses and neural foraminal stenoses—or disk herniations. Knowledge of the normal anatomy of the epidural space is essential to

Pathology and Forensic MedicineMedicine
3
Article|52 citations·2017
Metal Artifact Reduction for Orthopedic Implants (O-MAR): Usefulness in CT Evaluation of Reverse Total Shoulder Arthroplasty
Euddeum Shim, Yusuhn Kang, Joong Mo Ahn, Eugene Lee, Joon Woo Lee, Joo Han Oh, Heung Sik Kang
SJR Q1American Journal of Roentgenology

The use of O-MAR improved CT image quality for patients with RTSA in the aspect of metal artifact reduction and soft-tissue profile. However, O-MAR tends to degrade depiction of the bone trabeculae and bone cortex and generate new artifacts, including a pseudocemented appearance and scapular pseudonotching.

Biomedical EngineeringEngineering
4
Article|33 citations·2021
Clinical Validation of a Deep Learning-Based Hybrid (Greulich-Pyle and Modified Tanner-Whitehouse) Method for Bone Age Assessment
Kyu-Chong Lee, Kee‐Hyoung Lee, Chang Ho Kang, Kyung‐Sik Ahn, Lindsey Yoojin Chung, Jae-Joon Lee, Suk‐Joo Hong, Baek Hyun Kim, Euddeum Shim
SJR Q1Korean Journal of RadiologyOA

The proposed AI model was accurate for assessing bone age. Furthermore, this model appeared to enhance the clinical efficacy by reducing the reading time and improving the inter-observer reliability.

ArcheologyArts and Humanities
5
Article|29 citations·2023
Clinical Validation of an Artificial Intelligence Model for Detecting Distal Radius, Ulnar Styloid, and Scaphoid Fractures on Conventional Wrist Radiographs
Kyu-Chong Lee, In Cheul Choi, Chang Ho Kang, Kyung‐Sik Ahn, Heewon Yoon, Jae-Joon Lee, Baek Hyun Kim, Euddeum Shim
SJR Q2DiagnosticsOA

This study aimed to assess the feasibility and performance of an artificial intelligence (AI) model for detecting three common wrist fractures: distal radius, ulnar styloid process, and scaphoid. The AI model was trained with a dataset of 4432 images containing both fractured and non-fractured wrist images. In total, 593 subjects were included in the clinical test. Two human experts independently diagnosed and labeled the fracture sites using bounding boxes to build the ground truth. Two novice

SurgeryMedicine
6
Article|28 citations·2022
Lumbar Spine Computed Tomography to Magnetic Resonance Imaging Synthesis Using Generative Adversarial Network: Visual Turing Test
Ki-Taek Hong, Yongwon Cho, Chang Ho Kang, Kyung‐Sik Ahn, Heegon Lee, Joohui Kim, Suk‐Joo Hong, Baek Hyun Kim, Euddeum Shim
SJR Q2DiagnosticsOA

(1) Introduction: Computed tomography (CT) and magnetic resonance imaging (MRI) play an important role in the diagnosis and evaluation of spinal diseases, especially degenerative spinal diseases. MRI is mainly used to diagnose most spinal diseases because it shows a higher resolution than CT to distinguish lesions of the spinal canals and intervertebral discs. When it is inevitable for CT to be selected instead of MR in evaluating spinal disease, evaluation of spinal disease may be limited. In t

BiophysicsBiochemistry, Genetics and Molecular Biology
7
Article|20 citations·2020
The correlation between follow-up MRI findings and laboratory results in pyogenic spondylodiscitis
Kyung‐Sik Ahn, Chang Ho Kang, Suk‐Joo Hong, Baek Hyun Kim, Euddeum Shim
SJR Q2BMC Musculoskeletal DisordersOA

BACKGROUND: Although MRI is the gold-standard imaging method in the diagnosis of spondylodiscitis, role of follow-up imaging is debated and there can be discrepancies with regard to the significance of bony or soft tissue responses to treatment. Purpose of our study is to test whether the MRI changes on follow-up imaging correlate with laboratory findings of treatment response. METHODS: A total of 48 patients with pyogenic spondylodiscitis who underwent baseline and follow-up MRI were retrospect

SurgeryMedicine
8
Article|19 citations·2022
Diagnostic performance of electron-density dual-energy CT in detection of cervical disc herniation in comparison with standard gray-scale CT and virtual non-calcium images
Euddeum Shim, Baek Hyun Kim, Woo Young Kang, Suk‐Joo Hong, Chang Ho Kang, Kyung‐Sik Ahn, Hyeonbin Lee, Thomas J. Kwack
SJR Q1European RadiologyOA
Biomedical EngineeringEngineering
9
Article|15 citations·2016
Facet joint injection versus epidural steroid injection for lumbar spinal stenosis: intra-individual study
Euddeum Shim, Joon Woo Lee, E. Lee, Tae Seong Im, Yusuhn Kang, Joong Mo Ahn, Heung Sik Kang
SJR Q2Clinical Radiology
Pathology and Forensic MedicineMedicine
10
Article|14 citations·2013
Lymphoma Affecting the Breast: A Pictorial Review of Multimodal Imaging Findings
심으뜸, 송성은, 김영식, 손길수, 서보경
Journal of Breast Cancer

Hematological malignancies rarely affect the breast, and the majority of those that do are lymphomas. In this review, we describe the clinical aspects and multimodal imaging findings of breast lymphoma. We also illustrate the key clinical and radiological findings that allow it to be distinguished from various other malignant and benign diseases of the breast. Breast lymphoma manifests as a breast mass, a change in the subcutaneous tissue or the skin, or enlargement of the associated lymph node

11
Article|14 citations·2017
Correlation Between Bile Reflux Gastritis and Biliary Excreted Contrast Media in the Stomach
Jong Jin Hyun, Suk Keu Yeom, Euddeum Shim, Jaehyung Cha, Inyoung Choi, Seung Hwa Lee, Hwan Hoon Chung, Sang Hoon Cha, Changhee Lee
SJR Q3Journal of Computer Assisted TomographyOA

OBJECTIVE: This study aimed to evaluate the relationship between biliary excreted contrast media in the stomach and the presence of bile reflux gastritis. METHODS: Consecutive 111 patients who underwent both gadoxetic acid-enhanced magnetic resonance cholangiography (gadoxetic MRC) and gastric endoscopy were included in this study. We performed a review of the gadoxetic-MRC image sets acquired 60 minutes after intravenous injection of contrast media and endoscopic images. We recorded amount of c

GastroenterologyMedicine
12
Article|13 citations·2015
Predictive Factors of Atelectasis Following Endoscopic Resection
Jung Wan Choe, Sung Woo Jung, Jong Kyu Song, Euddeum Shim, Ji Yung Choo, Seung Young Kim, Jong Jin Hyun, Ja Seol Koo, Hyung Joon Yim, Sang Woo Lee
SJR Q2Digestive Diseases and Sciences
Anesthesiology and Pain MedicineMedicine
13
Article|11 citations·2024
Electron density dual-energy CT can improve the detection of lumbar disc herniation with higher image quality than standard and virtual non-calcium images
Juhyun Jeong, Sungwon Ham, Euddeum Shim, Baek Hyun Kim, Woo Young Kang, Chang Ho Kang, Kyung‐Sik Ahn, Kyu-Chong Lee, Hangseok Choi
SJR Q1European Radiology
Biomedical EngineeringEngineering
14
Article|8 citations·2022
Evaluation of Abdominal CT Obtained Using a Deep Learning-Based Image Reconstruction Engine Compared with CT Using Adaptive Statistical Iterative Reconstruction
Yeo Jin Yoo, In Young Choi, Suk Keu Yeom, Sang Hoon, Yunsub Jung, Hyun Jong Han, Euddeum Shim
SJR Q4Journal of the Belgian Society of RadiologyOA

DLIR showed improved image quality and decreased noise under a decreased radiation dose.

Radiology, Nuclear Medicine and ImagingMedicine
15
Article|7 citations·2022
Difference between bone age at the hand and elbow at the onset of puberty
Woo Young Jang, Kyung‐Sik Ahn, Saelin Oh, Ji Eun Lee, Jimi Choi, Chang Ho Kang, Woo Young Kang, Suk‐Joo Hong, Euddeum Shim, Baek Hyun Kim, Bo‐Kyung Je, Hae Woon Jung
SJR Q3MedicineOA

ABSTRACT: In the pubertal period, bone age advances rapidly in conjunction with growth spurts. Precise bone-age assessments in this period are important, but results from the hand and elbow can be different. We aimed to compare the bone age between the hand and elbow around puberty onset and to elucidate the chronological age confirming puberty onset according to elbow-based bone age.A total of 211 peripubertal subjects (127 boys and 84 girls) who underwent hand and elbow radiographs within 2 mo

RehabilitationMedicine

Research Areas

SurgeryRheumatologyBiomedical EngineeringPathology and Forensic MedicineRadiology, Nuclear Medicine and ImagingRehabilitation

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