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Ryu Jee-il

Hanyang University · Medicine

About the Lab

Professor Ryu Jee-il's research lab specializes in neurosurgical and neurological disorders, with a focus on aging-related brain and bone health, intracranial hemorrhage, and brain tumor biology. The lab investigates the interplay between systemic conditions—such as osteoporosis and chronic subdural hematoma—and intracranial pathologies, using advanced imaging and clinical data analysis. Key research directions include the pathophysiology of bone flap resorption after cranioplasty, the role of Wnt/β-catenin signaling in glioblastoma stemness and immunosuppression, and the association between bone mineral density and cerebral atrophy in healthy aging. The lab integrates neuroimaging, molecular biology, and large-scale clinical data to explore mechanisms underlying neurological outcomes and recurrence in neurosurgical patients.

chronic subdural hematomabone flap resorptionWnt/β-catenin signalingbrain atrophyosteoporosis and brain imaging

Research Overview

Papers
41
Total Citations
405
Papers (5y)
16
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
16total
2020
2022
2023
2024
2026
Citations per year (5y)
75total
20202022202320242026

Selected Papers

15
1
Article|92 citations·2016
Predictive factors for recurrence and clinical outcomes in patients with chronic subdural hematoma
Myung‐Hoon Han, Je Il Ryu, Choong Hyun Kim, Jae Min Kim, Jin Hwan Cheong, Hyeong-Joong Yi
SJR Q1Journal of neurosurgeryOA

OBJECTIVE Chronic subdural hematoma (CSDH) is a common type of intracranial hemorrhage in elderly patients. Many studies have suggested various factors that may be associated with the recurrence of CSDH. However, the results are inconsistent. The purpose of this study was to determine the associations among patient factors, recurrence, and clinical outcomes of CSDH after bur hole surgery performed during an 11-year period at twin hospitals. METHODS Kaplan-Meier analysis was performed to evaluate

NeurologyMedicine
2
Article|29 citations·2015
Bone Flap Resorption Following Cranioplasty after Decompressive Craniectomy: Preliminary Report
Ji Sang Kim, Jin Hwan Cheong, Je Il Ryu, Jae Min Kim, Choong Hyun Kim
SJR Q3Korean Journal of NeurotraumaOA

OBJECTIVE: Resorption of autologous bone flap grafts is a known long-term complication of cranioplasty following decompressive craniectomy (DC). We analyzed our data to identify risk factors for bone flap resorption (BFR) following cranioplasty. METHODS: A total of 162 patients who underwent cranioplasty following DC due to life-threatening elevated intracranial pressure between October 2003 and December 2012, were included in our investigation. Follow-up exceeded one year. RESULTS: BFR occurred

NeurologyMedicine
3
Article|23 citations·2018
Opportunistic osteoporosis screening via the measurement of frontal skull Hounsfield units derived from brain computed tomography images
Min Kyun Na, Yu Deok Won, Choong Hyun Kim, Jae Min Kim, Jin Hwan Cheong, Je Il Ryu, Myung‐Hoon Han
SJR Q1PLoS ONEOA

Clinical brain CT scans can assist in the detection of osteoporosis, and patients with an HU value < 610 as determined via brain CT may be considered for further evaluation for possible osteoporosis.

Orthopedics and Sports MedicineMedicine
4
Article|22 citations·2019
Association between bone mineral density and brain parenchymal atrophy and ventricular enlargement in healthy individuals
In-Suk Bae, Jae Min Kim, Jin Hwan Cheong, Je Il Ryu, Myung‐Hoon Han
SJR Q2AgingOA

Bone, vascular smooth muscle, and arachnoid trabeculae are composed of the same type of collagen. However, no studies have investigated the relationship between bone mineral density deterioration and cerebral atrophy, both of which occur in normal, healthy aging. Accordingly, we evaluated whether bone mineral density was associated with brain parenchymal atrophy and ventricular enlargement in healthy individuals. Intracranial cavity, brain parenchyma, and lateral ventricles volumes were measured

Orthopedics and Sports MedicineMedicine
5
Article|20 citations·2022
High DKK3 expression related to immunosuppression was associated with poor prognosis in glioblastoma: machine learning approach
Myung‐Hoon Han, Kyueng‐Whan Min, Yung‐Kyun Noh, Jae Min Kim, Jin Hwan Cheong, Je Il Ryu, Yu Deok Won, Seong‐Ho Koh, Jae Kyung Myung, Ji Young Park, Mi Jung Kwon
SJR Q1Cancer Immunology ImmunotherapyOA

BACKGROUND: Glioblastoma multiforme (GBM) is an aggressive malignant primary brain tumor. Wnt/β-catenin is known to be related to GBM stemness. Cancer stem cells induce immunosuppressive and treatment resistance in GBM. We hypothesized that Wnt/β-catenin-related genes with immunosuppression could be related to the prognosis in patients with GBM. METHODS: We obtained the clinicopathological data of 525 patients with GBM from the brain cancer gene database. The fraction of tumor-infiltrating immun

Molecular BiologyBiochemistry, Genetics and Molecular Biology
6
Article|18 citations·2016
Factors That Predict Risk of Cervical Instability in Rheumatoid Arthritis Patients
Myung‐Hoon Han, Je Il Ryu, Choong Hyun Kim, Jae Min Kim, Jin Hwan Cheong, Koang Hum Bak, Hyoung-Joon Chun, Hyeong-Joong Yi, Jae Bum Jun, Jaewoo Chung
SJR Q1Spine

STUDY DESIGN: Retrospective data analysis. OBJECTIVE: To identify factors affecting the atlantodental interval, the Ranawat value, and subaxial translation after rheumatoid arthritis (RA) diagnosis. In addition, factors predictive for cervical spine instability (CSI) development after RA diagnosis were examined. SUMMARY OF BACKGROUND DATA: Development of CSI affects the prognosis and mortality of RA patients. Previous studies described that obesity is associated with reduced radiographic joint d

SurgeryMedicine
7
Article|17 citations·2018
The frontal skull Hounsfield unit value can predict ventricular enlargement in patients with subarachnoid haemorrhage
Yu Deok Won, Min Kyun Na, Choong Hyun Kim, Jae Min Kim, Jin Hwan Cheong, Je Il Ryu, Myung‐Hoon Han
SJR Q1Scientific ReportsOA

Hydrocephalus is a common complication following subarachnoid haemorrhage (SAH) arising from spontaneous aneurysm rupture. The Hounsfield unit (HU) value from computed tomography scans may reflect bone mineral density, which correlates with body mass index, which in turn is related to post-SAH ventricle size changes. We herein investigated potential associations between frontal skull HU values and ventricle size changes after SAH. HU values from four different areas in the frontal bone were aver

NeurologyMedicine
8
Article|15 citations·2016
Comparison of Transarticular Screw Fixation and C1 Lateral Mass-C2 Pedicle Screw Fixation in Patients with Rheumatoid Arthritis with Atlantoaxial Instability
Je Il Ryu, Koang Hum Bak, Jae Min Kim, Hyoung-Joon Chun
SJR Q2World Neurosurgery
SurgeryMedicine
9
Review|14 citations·2022
Clinical Approaches to Late-Onset Psychosis
Kiwon Kim, Hong Jin Jeon, Woojae Myung, Seung Wan Suh, Su Jeong Seong, Jae Yeon Hwang, Je Il Ryu, Seon‐Cheol Park
SJR Q2Journal of Personalized MedicineOA

Psychosis can include schizophrenia, mood disorders with psychotic features, delusional disorder, active delirium, and neurodegenerative disorders accompanied by various psychotic symptoms. Late-onset psychosis requires careful intervention due to the greater associated risks of secondary psychosis; higher morbidity and mortality rates than early-onset psychosis; and complicated treatment considerations due to the higher incidence of adverse effects, even with the black box warning against antip

Psychiatry and Mental healthMedicine
10
Review|13 citations·2018
Cervical Epidural Hematoma That Induced Sudden Paraparesis After Cervical Spine Massage: Case Report and Literature Review
Je Il Ryu, Myung Hoon Han, Jae Min Kim, Choong Hyun Kim, Jin Hwan Cheong
SJR Q2World Neurosurgery
SurgeryMedicine
11
Article|13 citations·2017
Influence of systemic bone mineral density on atlantoaxial subluxation in patients with rheumatoid arthritis
Myung‐Hoon Han, Je Il Ryu, C. H. Kim, J. M. Kim, Jin Hwan Cheong, Koang Hum Bak, Hyoung-Joon Chun
SJR Q1Osteoporosis International
SurgeryMedicine
12
Article|11 citations·2022
A Machine-Learning-Algorithm-Based Prediction Model for Psychotic Symptoms in Patients with Depressive Disorder
Kiwon Kim, Je Il Ryu, Bong Ju Lee, Euihyeon Na, Yu‐Tao Xiang, Shigenobu Kanba, Takahiro A. Kato, Mian‐Yoon Chong, Shih‐Ku Lin, Ajit Avasthi, Sandeep Grover, Roy Abraham Kallivayalil
SJR Q2Journal of Personalized MedicineOA

Psychotic symptoms are rarely concurrent with the clinical manifestations of depression. Additionally, whether psychotic major depression is a subtype of major depression or a clinical syndrome distinct from non-psychotic major depression remains controversial. Using data from the Research on Asian Psychotropic Prescription Patterns for Antidepressants, we developed a machine-learning-algorithm-based prediction model for concurrent psychotic symptoms in patients with depressive disorders. The ad

Experimental and Cognitive PsychologyPsychology
13
Article|11 citations·2019
Association between cerebral atrophy and osteoporotic vertebral compression fractures
In-Suk Bae, Jae Min Kim, Jin Hwan Cheong, Myung‐Hoon Han, Je Il Ryu
SJR Q1PLoS ONEOA

We observed a significant association between OVCF and volume percentage of brain parenchyma. Degeneration of the brain may lead to a high incidence of falls, and OVCF may occur more frequently in patients with osteoporosis.

Orthopedics and Sports MedicineMedicine
14
Article|10 citations·2017
The Effects of Clinical Factors and Retro-Odontoid Soft Tissue Thickness on Atlantoaxial Instability in Patients with Rheumatoid Arthritis
Je Il Ryu, Myung Hoon Han, Jin Hwan Cheong, Jae Min Kim, Choong Hyun Kim, Hyoung-Joon Chun, Koang Hum Bak
SJR Q2World Neurosurgery
SurgeryMedicine
15
Article|10 citations·2022
Efficacy of Cytokine-Induced Killer Cell Immunotherapy for Patients With Pathologically Pure Glioblastoma
Myung‐Hoon Han, Jae Min Kim, Jin Hwan Cheong, Je Il Ryu, Yu Deok Won, Gun He Nam, Choong Hyun Kim
SJR Q2Frontiers in OncologyOA

The most common malignant central nervous system tumor is glioblastoma multiforme (GBM). Cytokine-induced killer (CIK) cell therapy is a promising type of adoptive cell immunotherapy for various cancers. We previously conducted a randomized clinical trial on CIK cell therapy in patients with GBM. The aim of this study was to evaluate the efficacy of CIK immunotherapy for patients with pathologically pure GBM, using data from our previous randomized clinical trial. The difference between overall

OncologyMedicine

Research Areas

NeurologySurgeryOrthopedics and Sports MedicinePathology and Forensic MedicineExperimental and Cognitive PsychologyOncology

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