Jihoon Cha
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View article: Effects of Semaglutide With or Without Concomitant Mineralocorticoid Receptor Antagonist Use in Participants With Type 2 Diabetes and Chronic Kidney Disease: A FLOW Trial Prespecified Secondary Analysis
Effects of Semaglutide With or Without Concomitant Mineralocorticoid Receptor Antagonist Use in Participants With Type 2 Diabetes and Chronic Kidney Disease: A FLOW Trial Prespecified Secondary Analysis Open
OBJECTIVE In the Evaluate Renal Function With Semaglutide Once Weekly (FLOW) trial, semaglutide reduced the risk of major kidney and cardiovascular (CV) outcomes and all-cause mortality in people with type 2 diabetes (T2D) and chronic kidn…
Increasing discrepancy of MR imaging and CSF study in patients with leptomeningeal seeding from lung adenocarcinoma after targeted therapy using a tyrosine kinase inhibitor Open
Purpose: To evaluate the correlation between contrast-enhanced (CE) MRI and cerebrospinal fluid (CSF) cytology for the evaluation of leptomeningeal metastasis (LM) on MRI after targeted therapy with tyrosine kinase inhibitors. Methods: We …
Fibromuscular dysplasia of internal carotid arteries: features on high-resolution magnetic resonance imaging Open
Fibromuscular dysplasia (FMD) is a noninflammatory and nonatherosclerotic disease that predominantly affects the renal and internal carotid arteries. However, the cause of this disease remains unclear. Radiological studies are important di…
Diagnostic Accuracy of MR Imaging of Patients with Leptomeningeal Seeding from Lung Adenocarcinoma after Chemotherapy using a Tyrosine Kinase Inhibitor Open
Purpose To assess the diagnostic accuracy of contrast-enhanced(CE) MRI in evaluation of leptomeningeal metastasis(LM) on the MRI after chemotherapy with tyrosine kinase inhibitor(TKI). Methods We retrospectively reviewed data of 35 non-sma…
Dual-Energy Computed Tomography Quantification of Extravasated Iodine and Hemorrhagic Transformation after Thrombectomy Open
After endovascular thrombectomy (EVT) for ischemic stroke, early prediction of hemorrhagic transformation (HT) is important because HT often requires changes in therapeutic strategy. 13][4] Dual-energy computed tomography (DECT) can accura…
High-Resolution Intracranial Vessel Wall MRI Findings Among Different Middle Cerebral Artery Territory Infarction Types Open
The spatial relationship between the perforating artery orifice and plaque varied among different types of MCA territory infarctions. In patients with BOD, the plaque margin was closer and blocked the perforating artery orifice, and stenos…
Vessel Wall Changes on Serial High-Resolution MRI and the Use of Cilostazol in Patients With Adult-Onset Moyamoya Disease Open
ClinicalTrials.gov identifier NCT02074111.
View article: Deep Learning–Based Software Improves Clinicians' Detection Sensitivity of Aneurysms on Brain TOF-MRA
Deep Learning–Based Software Improves Clinicians' Detection Sensitivity of Aneurysms on Brain TOF-MRA Open
Software-aided reading showed significant incremental value in the sensitivity of clinicians in the detection of aneurysms on MRA without a significant increase in false-positive findings, especially for the neurosurgeon and neurologist. S…
Eif2b3 mutants recapitulate phenotypes of vanishing white matter disease and validate novel disease alleles in zebrafish Open
Leukodystrophy with vanishing white matter (VWM), also called Childhood Ataxia with Central Nervous System Hypomyelination, is caused by mutations in the subunits of the eukaryotic translation initiation factor, EIF2B1, EIF2B2, EIF2B3, EIF…
View article: A Deep Learning Model with High Standalone Performance for Diagnosis of Unruptured Intracranial Aneurysm
A Deep Learning Model with High Standalone Performance for Diagnosis of Unruptured Intracranial Aneurysm Open
The present deep learning model for automated detection of unruptured intracranial aneurysms on TOF MRA achieved the target diagnostic performance comparable to that of human radiologists. With high standalone performance, this model may b…
Factors for Enhancement of Intracranial Atherosclerosis in High Resolution Vessel Wall MRI in Ischemic Stroke Patients Open
Introduction: High resolution vessel wall MRI (VW-MRI) has enabled to characterize intracranial atherosclerosis (ICAS). We studied to identify the factors for enhancement of ICAS in VW-MRI in patients with acute ischemic stroke. Methods: C…
Temporal Profile of Blood-Brain Barrier Breakdown in Reversible Cerebral Vasoconstriction Syndrome Open
Background and Purpose— Reversible cerebral vasoconstriction syndrome (RCVS) has a unique temporal course of vasoconstriction. Blood-brain barrier (BBB) breakdown is part of the pathophysiology of RCVS, but its temporal course is unknown. …
Contrast-Enhanced High-Resolution Intracranial Vessel Wall MRI with Compressed Sensing: Comparison with Conventional T1 Volumetric Isotropic Turbo Spin Echo Acquisition Sequence Open
CS may be useful for intracranial VW-MRI as it allows for larger scan coverage with slightly shorter scan time without compromising image quality.
Intensive Statin Treatment in Acute Ischaemic Stroke Patients with Intracranial Atherosclerosis: a High-Resolution Magnetic Resonance Imaging study (STAMINA-MRI Study) Open
Objective Intracranial atherosclerosis is a major cause of ischaemic stroke worldwide. A number of studies have shown the effects of statin treatment on coronary and carotid artery plaques, but there is little evidence on the effects of st…
Usefulness of high-resolution three-dimensional proton density-weighted turbo spin-echo MRI in distinguishing a junctional dilatation from an intracranial aneurysm of the posterior communicating artery: a pilot study Open
Background Discriminating a junctional dilatation from a true saccular aneurysm is clinically important. Purpose To evaluate the usefulness of high-resolution three-dimensional proton density-weighted turbo spin-echo magnetic resonance ima…
Differentiation of postoperative changes and residual tumors in dynamic contrast-enhanced sella MRI after transsphenoidal resection of pituitary adenoma Open
To establish magnetic resonance imaging (MRI) features that differentiate residual tumors from postoperative surgical changes following the transsphenoidal approach of a pituitary adenoma. We analyzed residual enhancements at the tumor bed…
Basal cell adenoma and myoepithelioma of the parotid gland: patterns of enhancement at two-phase CT in comparison with Warthin tumor Open
BCAs and MEs of the parotid gland frequently show early enhancement and a washout pattern on two-phase CT, which can be indistinguishable from WTs in the majority of cases.
Data‐driven synthetic MRI FLAIR artifact correction via deep neural network Open
Background FLAIR (fluid attenuated inversion recovery) imaging via synthetic MRI methods leads to artifacts in the brain, which can cause diagnostic limitations. The main sources of the artifacts are attributed to the partial volume effect…
Characterization of clot composition in acute cerebral infarct using machine learning techniques Open
Objective Clot characteristics can provide information on the cause of cerebral artery occlusion and may guide acute revascularization and secondary prevention strategies. We developed a rapid automated clot analysis system using machine l…
Visualization of basilar artery atherosclerotic plaques by conventional T2-weighted magnetic resonance imaging: A case-control study Open
Our data suggest that BA atherosclerosis can be detected by conventional MRI. When the use of HRMR is limited, conventional MR imaging may give additive information to clinicians.
Ischemic Stroke with Cerebral Vasculopathy in POEMS Syndrome Open
Ischemic stroke caused by the cerebral vasculopathy is a rare complication of polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes (POEMS) syndrome. We present a case of recurrent ischemic strokes caused by…
Cav-1 (Caveolin-1) and Arterial Remodeling in Adult Moyamoya Disease Open
Background and Purpose— Moyamoya disease (MMD) is a unique cerebrovascular occlusive disease characterized by progressive stenosis and negative remodeling of the distal internal carotid artery (ICA). We hypothesized that cav-1 (caveolin-1)…
Outcomes after ischemic stroke caused by intracranial atherosclerosis vs dissection Open
Considering the high prevalence of ICAD in the patients with presumed ICAS and the differential outcomes between ICAD and ICAS, HR-MRI may be a useful diagnostic tool in this population.
A case report of isolated orbital vasculitis mimicking retinal migraine: A potential cause of recurrent transient monocular blindness and ipsilateral headache Open
Background Retinal migraine is an important differential diagnosis of recurrent transient monocular blindness accompanied by headache when other etiologies are excluded. Here, we report a case of orbital vasculitis which initially mimicked…
Melanoma of the Sinonasal Tract: Value of a Septate Pattern on Precontrast T1-Weighted MR Imaging Open
A septate pattern on precontrast T1WI might be an adjunctive imaging finding for the diagnosis of sinonasal melanoma. This might be attributed histologically to an uneven distribution of melanin and hemorrhage within the tumors.
Central nervous system superficial siderosis related to spinal lesions Open
Superficial siderosis is a rare disease of the central nervous system, which is characterized by chronic intrathecal hemorrhage leading to hemosiderin deposition on the leptomeninges and subpial layers of the brain and spinal cord. Patient…
Discrepant lesion size estimated on T1- and fat-suppressed T2-weighted MRI: diagnostic value for differentiation between inflammatory pseudotumor and carcinoma of the nasopharynx Open
In contrast to NPCs, NIPTs appear smaller on fat-suppressed T2-weighted images than on T1-weighted images. This discrepancy in the lesion size estimated on T1-weighted and fat-suppressed T2-weighted images may provide a simple and consiste…