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Sung-Bum Pyun

Korea University · Medicine

About the Lab

Professor Sung-Bum Pyun's research lab specializes in neurological rehabilitation and neuroimaging, focusing on stroke recovery, language impairments, and respiratory function following stroke. The lab investigates neuromodulation techniques such as repetitive transcranial magnetic stimulation (rTMS) combined with action observation, respiratory muscle training, and advanced imaging methods like diffusion tensor imaging (DTI) to understand brain-behavior relationships. A key focus is on developing AI-driven tools—such as deep learning models for automated analysis of videofluoroscopic swallowing studies—to improve diagnostic efficiency and treatment personalization.

stroke rehabilitationaphasianeuroimagingrTMSdeep learning in neurology

Research Overview

Papers
204
Total Citations
2,699
Papers (5y)
30
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
30total
2022
2023
2024
2025
2026
Citations per year (5y)
162total
20222023202420252026

Selected Papers

15
1
Article|47 citations·2006
Dysphagia and Hoarseness Associated with Painless Aortic Dissection: A Rare Case of Cardiovocal Syndrome
Sang‐Il Lee, Sung‐Bom Pyun, Dae‐Hyun Jang
SJR Q1Dysphagia
Pulmonary and Respiratory MedicineMedicine
2
Article|40 citations·2008
The Effect of Anatomical Variation of the Sural Nerve on Nerve Conduction Studies
Sung‐Bom Pyun, Hee-Kyu Kwon
SJR Q1American Journal of Physical Medicine & Rehabilitation

Because the sural nerve formation is highly variable, the possibility of anatomical variation should be considered when the sural sensory nerve action potential is of low amplitude and disproportionate to the neurologic evaluation.

Radiology, Nuclear Medicine and ImagingMedicine
3
Article|39 citations·2019
Effects and safety of combined rTMS and action observation for recovery of function in the upper extremities in stroke patients: A randomized controlled trial
Jun Soo Noh, Ji Hoon Lim, Tae Woong Choi, Seung Gul Jang, Sung‐Bom Pyun
SJR Q3Restorative Neurology and Neuroscience

BACKGROUND: Repetitive transcranial magnetic stimulation (rTMS) modulates cortical excitability and facilitates motor learning to improve motor recovery after stroke. Action observation (AO) therapy effectively facilitates physical training for motor memory formation. OBJECTIVE: To compare the effectiveness of rTMS alone with that of combined rTMS and AO for the functional recovery of upper extremity function in subacute stroke patients and to verify the safety of the interventions. METHODS: The

RehabilitationMedicine
4
Article|31 citations·2016
Neural substrates of lower extremity motor, balance, and gait function after supratentorial stroke using voxel-based lesion symptom mapping
Hyun Im Moon, Sung‐Bom Pyun, Woo‐Suk Tae, Hee Kyu Kwon
SJR Q1Neuroradiology
RehabilitationMedicine
5
Article|31 citations·2018
Efficacy of Bedside Respiratory Muscle Training in Patients With Stroke
Hyun-Joon Yoo, Sung‐Bom Pyun
SJR Q1American Journal of Physical Medicine & Rehabilitation

OBJECTIVE: Inspiratory and expiratory muscles are important for effective respiratory function. This study aimed to investigate the efficacy of bedside respiratory muscle training on pulmonary function and stroke-related disabilities in stroke rehabilitation. DESIGN: Patients with stroke (N = 40) in a rehabilitation unit were randomly assigned to either the intervention group (n1 = 20) or the control group (n2 = 20). Both groups participated in a conventional stroke rehabilitation program. Durin

Speech and HearingHealth Professions
6
Article|26 citations·2021
Automatic Pharyngeal Phase Recognition in Untrimmed Videofluoroscopic Swallowing Study Using Transfer Learning with Deep Convolutional Neural Networks
Ki-Sun Lee, Eunyoung Lee, Bareun Choi, Sung‐Bom Pyun
SJR Q2DiagnosticsOA

BACKGROUND: Video fluoroscopic swallowing study (VFSS) is considered as the gold standard diagnostic tool for evaluating dysphagia. However, it is time consuming and labor intensive for the clinician to manually search the recorded long video image frame by frame to identify the instantaneous swallowing abnormality in VFSS images. Therefore, this study aims to present a deep leaning-based approach using transfer learning with a convolutional neural network (CNN) that automatically annotates phar

Speech and HearingHealth Professions
7
Review|25 citations·2022
Language systems from lesion-symptom mapping in aphasia: A meta-analysis of voxel-based lesion mapping studies
Yoonhye Na, JeYoung Jung, Christopher R. Tench, Dorothee P. Auer, Sung‐Bom Pyun
SJR Q1NeuroImage ClinicalOA

The association patterns of lesion topography and specific language deficits provide key insights into the specific underlying language pathways. Our meta-analysis results strongly support the dual pathway model of language processing, capturing the link between the different symptom complexes of aphasias and the different underlying location of damage.

Cognitive NeuroscienceNeuroscience
8
Article|24 citations·2020
Clinical and neuroimaging factors associated with aphasia severity in stroke patients: diffusion tensor imaging study
Sekwang Lee, Yoonhye Na, Woo‐Suk Tae, Sung‐Bom Pyun
SJR Q1Scientific ReportsOA

This study investigated factors associated with aphasia severity at both 2 weeks and 3 months after stroke using demographic and clinical variables, brain diffusion tensor imaging (DTI) parameters, and lesion volume measurements. Patients with left hemisphere stroke were assessed at 2 weeks (n = 68) and at 3 months (n = 20) after stroke. Demographic, clinical, and neuroimaging data were collected; language functions were assessed using the Western Aphasia Battery. For neuroimaging, DTI parameter

Radiology, Nuclear Medicine and ImagingMedicine
9
Article|22 citations·2023
Clinical efficacy of overground powered exoskeleton for gait training in patients with subacute stroke: A randomized controlled pilot trial
Hyun-Joon Yoo, Cho Rong Bae, Hyeonsoon Jeong, Myoung-Hwan Ko, Yoon‐Kyoo Kang, Sung‐Bom Pyun
SJR Q3MedicineOA

BACKGROUND: To investigate the efficacy and usefulness of 12 sessions of overground robot-assisted gait training (RAGT) in subacute stroke patients. METHODS: In this pilot study, 17 subacute stroke survivors were randomly assigned to the intervention (n = 9) and control (n = 8) groups. In addition to the conventional stroke neurorehabilitation program, the intervention group received 30 minutes of overground exoskeletal RAGT, while the control group received 30 minutes of conventional gait train

RehabilitationMedicine
10
Article|22 citations·2009
A home programme for patients with cognitive dysfunction: A pilot study
Sung‐Bom Pyun, Hee-Seung Yang, Sang‐Il Lee, Jinsook Yook, Jaesung Kwon, Eun-Mi Byun
SJR Q3Brain Injury

The results of this study showed that an individualized home programme improved IADL performance in patients with cognitive dysfunction and may have a beneficial effect on cognition, as assessed by general cognitive measures.

Psychiatry and Mental healthMedicine
11
Article|20 citations·2009
Pseudodysphagia Due to Omohyoid Muscle Syndrome
Lina Kim, Hee-Kyu Kwon, Sung‐Bom Pyun
SJR Q1Dysphagia
SurgeryMedicine
12
Article|20 citations·2011
Application of 3-Dimensional Ultrasonography in Assessing Carpal Tunnel Syndrome
Sung‐Bom Pyun, Chang Ho Kang, Joon Shik Yoon, Hee Kyu Kwon, Jung Hyuk Kim, Kyoo Byung Chung, Yu Whan Oh
SJR Q2Journal of Ultrasound in Medicine

Our results show that 3DUS could markedly decrease scanning time, and measurement of the median nerve cross-sectional area combined with morphologic analysis using 3DUS is a promising supplementary method for the diagnosis of carpal tunnel syndrome.

Radiology, Nuclear Medicine and ImagingMedicine
13
Article|17 citations·2019
Prediction of functional outcome and discharge destination in patients with traumatic brain injury after post-acute rehabilitation
Doo-Young Kim, Sung‐Bom Pyun
SJR Q2International Journal of Rehabilitation Research

As the survival rate of traumatic brain injury increases, the burden of care for patients with traumatic brain injury is emerging as a socioeconomic issue and the discharge destination is one of the important outcome measures in the post-acute rehabilitation unit. To investigate the predictors of functional outcome and discharge destination in patients with traumatic brain injury after post-acute rehabilitation. A retrospective review was performed on 86 patients who were admitted to the rehabil

NeurologyMedicine
14
Article|16 citations·2008
Differential Reorganization of Fusiform Gyrus in Two Types of Alexia after Stroke
Sung‐Bom Pyun, Hyo-Jeong Sohn, Jae-Bum Jung, Kichun Nam
SJR Q2Neurocase

Lesions affecting the left fusiform gyrus (FG) commonly result in dyslexia and recovery largely depends on efficient reorganization of the reading network. We performed a follow-up fMRI study to elucidate the reorganization patterns of the FG according to the recovery of reading ability in two patients (MH with pure alexia and KM with alexia with agraphia) after stroke involving the left FG. Initially, MH was an effortful letter-by-letter (LBL) reader, and she improved to become a proficient LBL

Cognitive NeuroscienceNeuroscience
15
Article|16 citations·2022
Structural Changes in the Arcuate Fasciculus and Recovery of Post-stroke Aphasia: A 6-Month Follow-up Study using Diffusion Tensor Imaging
Cho Rong Bae, Yoonhye Na, Minjae Cho, Yu Mi Hwang, Woo‐Suk Tae, Sung‐Bom Pyun
SJR Q1Neurorehabilitation and neural repair

Background Temporal changes in the structural connectivity of major language tracts after stroke and their contribution to aphasia recovery are unclear. Objective To investigate longitudinal arcuate fasciculus (AF) integrity changes and their relationship with post-stroke aphasia recovery using diffusion tensor imaging (DTI). Methods Thirty-five patients with aphasia due to first-ever left hemispheric stroke underwent the Korean version of the Western Aphasia Battery and DTI at 1- and 6-month po

Radiology, Nuclear Medicine and ImagingMedicine

Research Areas

Radiology, Nuclear Medicine and ImagingRehabilitationCognitive NeuroscienceSpeech and HearingNeurologyDevelopmental and Educational Psychology

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