Publications by authors named "Jeong-Jin Park"

is a spore-forming, Gram-positive bacterium that can cause infections in subjects with weakened immune system or following antibiotic treatment. These infections may lead to pseudomembranous colitis and antibiotic-associated diarrhea in humans. As such, is a major cause of nosocomial illness worldwide.

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Cerebrovascular accident is a leading cause of death and disability. Early detection of cerebrovascular diseases is crucial for timely treatment. This study introduces a novel method for the simultaneous generation of color-coded arteriography, venography, and dynamic angiography derived from dynamic contrast-enhanced magnetic resonance angiography and computed tomography perfusion.

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: To quantitatively assess the long-term volume stability of acellular dermal matrix (ADM) in oncoplastic breast-conserving surgery (OBCS) and analyze surgical and aesthetic outcomes. : This retrospective study examined 172 breast cancer patients who underwent OBCS with immediate ADM-based volume replacement (2020-2022). Patients received either diced ADM with sheet ADM ( = 102) or diced ADM with paste ADM (n = 70).

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Objective: Acute vertebrobasilar occlusion can led to a fatal outcome, but lack of established procedures poses many difficulties in its management. Although mechanical thrombectomy (MT) has shown positive outcomes recently, high reocclusion rate remains a hurdle. This study is to share experience and to review technical challenges of rescue angioplasty and/or stenting (RAS) for refractory occlusions after MT in posterior circulation ischemic stroke (PCIS).

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Background: Technological advancements have made three-dimensional printing prevalent in orthopedic surgery. It facilitates the production of customized implants and tailored patient instruments, enhancing surgical planning and results. This review focuses on the uses and effectiveness of patient-specific products manufactured using three-dimensional printing in ankle surgery.

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Background: Intra-articular corticosteroid injection is commonly used for pain relief in ankle osteoarthritis (OA). The effects of corticosteroids (CS) are short-lived, whereas hyaluronic acid (HA) have longer-lasting effects. The objective was to compare the efficacy of dual injections of CS and HA to CS alone.

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Purpose: To compare the prognostic abilities of multiphase CT angiography (mCTA) and multiphase MR angiography (MRA) collateral map in acute anterior circulation ischemic stroke.

Methods: This secondary analysis of a prospective observational study included data from participants with acute ischemic stroke due to steno-occlusion of the internal carotid artery and/or middle cerebral artery within 8 h of symptom onset between January 1, 2016, and March 31, 2021. The intermethod agreement of the collateral scores (CSs) from mCTA and the collateral perfusion scores (CPSs) from the MRA collateral map was analyzed.

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Purpose: To evaluate the efficacy of assistant arthroscopy in the surgical treatment of distal radius fractures (DRFs) by the functional and radiological outcomes between the arthroscopic and control groups.

Methods: We searched the PubMed, Embase, Web of Science, and Cochrane Library databases for studies that compared the clinical outcomes of patients who underwent surgery with or without adjuvant arthroscopy. After screening the studies, we identified six randomized controlled trials.

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To validate the clinical feasibility of deep learning-driven magnetic resonance angiography (DL-driven MRA) collateral map in acute ischemic stroke. We employed a 3D multitask regression and ordinal regression deep neural network, called as 3D-MROD-Net, to generate DL-driven MRA collateral maps. Two raters graded the collateral perfusion scores of both conventional and DL-driven MRA collateral maps and measured the grading time.

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Purpose: To investigate the clinical feasibility of a CT collateral map compared with an MRA collateral map, focusing on collateral perfusion (CP) estimation and baseline lesion assessment in acute ischemic stroke (AIS).

Materials And Methods: This retrospective analysis used selected data from a prospectively collected database. We generated CT collateral maps derived from CT perfusion, encompassing images of arterial, capillary, early venous (CMEV), late venous, and delay phases.

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Introduction: Ruptured vertebral artery dissections frequently exhibit pearl-and-string signs, a characteristic also observed in many unruptured dissections. This study examines the natural course of 50 unruptured acute vertebral artery dissections presenting with pearl-and-string signs and compares them to 10 ruptured dissections of the same morphological pattern.

Methods: We reviewed 633 radiology reports of head and neck imaging studies that included the keyword 'dissection'.

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We investigated the effect of high mobility group box 1 (HMGB1) on intracranial aneurysms (IAs) by analyzing single-nucleotide polymorphisms (SNPs) based on genome-wide association study (GWAS) data. HMGB1 mRNA and protein expression levels in plasma were also analyzed. : This study was a comprehensive analysis of a GWAS dataset, including 250 patients with IAs and 294 controls.

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Article Synopsis
  • - Ruptured aneurysms of the lateral spinal artery (LSA) are rare but pose unique diagnostic and therapeutic challenges, particularly due to their intricate anatomy that differs from common aneurysms found in the circle of Willis.
  • - A literature review revealed 11 patients with LSA aneurysms causing subarachnoid hemorrhage (SAH), with diagnostic imaging showing low detection rates on initial CT angiography but better results with transfemoral cerebral angiography.
  • - Treatment strategies varied, with most patients undergoing either microsurgical clipping or endovascular treatment; complications noted included PICA infarction and subdural hematoma, highlighting the need for individualized approaches based on patient-specific vascular anatomy.
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: Recent studies utilizing weight-bearing computed tomography have identified abnormal internal rotation of the talus in advanced varus ankle arthritis (VAA) with a large talar tilt (TT), influenced by the posterior tibial tendon (PTT). This study aimed to evaluate the clinical and radiographic results of supramalleolar osteotomy (SMO) combined with PTT release and lateral ligament augmentation for VAA with a large TT. : From January 2015 to September 2018, 15 patients with VAA and a large TT (greater than 5°) underwent SMO combined with PTT release.

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Objective: The dominant vertebral artery (VA) approach is primarily considered in mechanical thrombectomy (MT) for acute occlusion of the vertebrobasilar (VB) artery. As accessing the dominant artery is sometimes difficult, we present our experience treating acute VB stroke via a nondominant VA approach through a comparison with the dominant VA approach.

Methods: Among 2785 patients diagnosed with hyperacute ischemic stroke between January 2014 and December 2022, 50 patients with VB ischemic stroke underwent recanalization therapy through either dominant, nondominant, or bilateral VA approach.

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Currently, commercial sunscreens cause a number of biotoxicity and environmental issues, making it imperative to develop biocompatible alternatives. In this study, we aimed to develop an alternative sunscreen from two ecofriendly and biocompatible natural polyphenolic compounds, tannic acid (TA) and quercetin (Que). The sunscreen was prepared through a simple process using an oil-in-water emulsion as the medium and hyaluronic acid (HA) as the base polymer to improve biocompatibility.

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Article Synopsis
  • A cloud-based telemedicine platform is being developed for patients with intracerebral hemorrhage (ICH) in rural areas of Gangwon state, integrating artificial intelligence and remote neurosurgeon consultations.
  • The goal is to create an ICH treatment protocol aimed at helping less experienced emergency room doctors provide appropriate early care before transferring patients to specialized hospitals.
  • The guidelines for ICH management have been simplified by neurosurgeons from university hospitals to enhance accessibility for more doctors, with the hope of improving treatment quality in underserved regions.
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Purpose: This study aimed to verify the value of arterial spin labeling (ASL) collateral perfusion estimation for predicting functional outcomes in acute anterior circulation ischemic stroke.

Methods: This secondary analysis of an ongoing prospective observational study included data from participants with acute ischemic stroke due to steno-occlusion of the internal carotid artery and/or the middle cerebral artery within 8 h of symptom onset. We compared the collateral map, which is a 5-phase collateral imaging derived from dynamic contrast-enhanced magnetic resonance angiography, and ASL to validate the ASL collateral perfusion estimation.

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Article Synopsis
  • * After treating the filler, the researchers created composites through melt-mixing and extrusion-injection molding to assess compatibility and migration behavior.
  • * Results showed that using butyl acrylate and maleic anhydride improved filler migration issues while preserving mechanical properties, but too much hydrophobicity from lauric acid decreased compatibility, indicating a balance is needed for effective automotive applications.
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Objectives: This study evaluated the collateral map's ability to predict lesion growth and penumbra after acute anterior circulation ischemic strokes.

Methods: This was a retrospective analysis of selected data from a prospectively collected database. The lesion growth ratio was the ratio of the follow-up lesion volume to the baseline lesion volume on diffusion-weighted imaging (DWI).

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The appropriate surgical management of osteochondral lesions of the talus (OLT) remains a challenge for foot and ankle surgeons. Currently, microfracture (MF) is the first-line operative treatment for small osteochondral lesions. However, the fibrous cartilage regenerated after MF is mechanically inferior to hyaline cartilage regeneration and is susceptible to deterioration over time.

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Objective: Collateral circulation is associated with the differential treatment effect of endovascular thrombectomy (EVT) in acute ischemic stroke. We aimed to verify the ability of the collateral map to predict futile EVT in patients with acute anterior circulation ischemic stroke.

Methods: This secondary analysis of a prospective observational study included data from participants underwent EVT for acute ischemic stroke due to occlusion of the internal carotid artery and/or the middle cerebral artery within 8 hours of symptom onset.

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Objectives: To establish reproducible measurements of the sustentaculum tali (ST) fragment regarding fracture classification and patient-related factors.

Design: Retrospective.

Setting: Trauma center, University Hospital.

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Article Synopsis
  • During the COVID-19 pandemic, the use of face masks increased significantly, leading to discomfort for many, including patients with full-thickness skin grafts (FTSG) in the retroauricular area.
  • A study involving 27 patients examined complications from mask use, specifically looking at pain, itching, and discomfort at the graft site compared to the normal side.
  • Results showed minimal complications, with only slight pain or itching reported, and none affected the ability to wear masks, supporting the continued use of the retroauricular region as a donor site for FTSG during the pandemic.
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We evaluated the therapeutic effects of bone-marrow-derived mesenchymal stem cells (BMSCs) on behavioral and cognitive function in a mouse model of mild subarachnoid hemorrhage (SAH) and explored the underlying mechanisms in conjunction with the HMGB1-RAGE axis. The SAH models were generated in a total of 126 male C57BL/6J mice via endovascular perforation and evaluated 24 h and 72 h after the intravenous administration of BMSCs (3 × 10 cells). The BMSCs were administered once, at 3 h, or twice, at 3 h and 48 h after the model induction.

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