Hak Cheol Ko

Staged posterior fossa decompression and microvascular decompression for trigeminal neuralgia in autosomal dominant osteopetrosis type I: A case report

Sung-Soo Bae, Seung Hoon Lim, Hee Sup Shin, Hak Cheol Ko

RATIONALE: Osteopetrosis is a rare hereditary skeletal disorder characterized by increased bone density resulting from defective osteoclast-mediated bone resorption. This condition may lead to cranial nerve compression syndromes, with trigeminal neuralgia (TN) occurring infrequently. PATIENT CONCERNS: We report the case of a …

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Analysis of the behavior of degradation products derived from expanded polystyrene in simulated marine environmental experiments: Sedimentation and sand sorption

Hak Cheol Ko, Inseong Hwang

A Study on the Healthcare Workforce and Care for Acute Stroke: Results From the Survey of Hospitals Included in the National Acute Stroke Quality Assessment Program

Jong Young Lee, Jun Kyeung Ko, Hak Cheol Ko, Hae‐Won Koo et autres

BACKGROUND: With growing elderly populations, management of patients with acute stroke is increasingly important. In South Korea, the Acute Stroke Quality Assessment Program (ASQAP) has contributed to improving the quality of stroke care and practice behavior in healthcare institutions. While the mortality …

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Prediction of Hemifacial Spasm Re-Appearing Phenomenon after Microvascular Decompression Surgery in Patients with Hemifacial Spasm Using Dynamic Susceptibility Contrast Perfusion Magnetic Resonance Imaging

Seung Hoon Lim, Xiao‐Yi Guo, Hyug‐Gi Kim, Hak Cheol Ko et autres

OBJECTIVE: Hemifacial spasm (HFS) is treated by a surgical procedure called microvascular decompression (MVD). However, HFS re-appearing phenomenon after surgery, presenting as early recurrence, is experienced by some patients after MVD. Dynamic susceptibility contrast (DSC) perfusion magnetic resonance imaging (MRI) and two …

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Stretched and fractured Neuroform Atlas® stent during a stent‑assisted coil embolization: A case report

Hak Cheol Ko, Hee Sup Shin

The Neuroform Atlas® stent is one of the most recently developed stents for coil embolization, with advancements in a lower‑profile delivery system, enhanced trackability, smaller cell size, and increased wall conformability. Because of these advantages, the Neuroform Atlas® stent shows high technical …

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Proper Head Rotation when Performing Microvascular Decompression for Hemifacial Spasm: An Orthometric Consideration Based on Preoperative MRI

Hak Cheol Ko, Seung Hwan Lee, Hee Sup Shin

BACKGROUND: The classic surgical position for microvascular decompression (MVD) is lateral decubitus with the head rotated 10 degrees away from the affected side. In this study, we measured the angles of the posterior fossa, specifically focusing on the surgical corridors used in …

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Direct Cannulation of a Calvarial Diploic Vein for Embolization of a Symptomatic Intraosseous Arteriovenous Fistula: A Case Report

Jung In Jo, Chang‐Woo Ryu, Hak Cheol Ko, Hee Sup Shin

Diploic arteriovenous fistulas (AVFs) or intraosseous dural AVFs are rare arteriovenous shunts. A diploic AVF is formed between a meningeal artery and an intraosseous diploic vein or the transosseous emissary vein, and the nidus is located exclusively within the bone. Currently, endovascular …

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Reversible cerebral vasoconstriction syndrome presenting with intracranial hemorrhage: a case report and literature review

Taewon Choi, Hee Sup Shin, Seung Hwan Lee, Jun Seok Koh et autres

IntroductionReversible cerebral vasoconstriction syndrome (RCVS) is characterized by recurrent thunderclap headaches with segmental vasoconstriction of the intracranial arteries.RCVS may result in ischemic stroke or intracranial hemorrhage (ICH), but the pathophysiology and data of RCVS-related ICH are not well known [1].The purpose of …

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The clinical outcomes of mechanical thrombectomy for proximal M1 occlusion involving lenticulostriate perforators

Hak Cheol Ko

ABSTRACT: Although the success rate of recanalization in acute intracranial artery occlusion is high, there is a poor rate of improvement in functional clinical outcome. The purpose of this study was to assess the functional outcome of mechanical thrombectomy for proximal M1 …

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Rescue balloon-assisted remodeling technique for protrusion of coil loop

Hak Cheol Ko

RATIONALE: Among the possible complications during endovascular embolization of intracranial aneurysms, coil protrusion into the parent artery is associated with parent artery occlusion or thromboembolic of the distal arteries. There is no clearly established management strategy for coil protrusion. This report demonstrates …

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Human mesenchymal stem cells derived from umbilical cord and bone marrow exert immunomodulatory effects in different mechanisms

Youngseok Song, Jean K. Lim, Tze-Peng Lim, Keon-Il Im et autres

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Treatment for Hemifacial Spasm Associated with a Dissecting Vertebral Artery Aneurysm Requiring Microvascular Decompression in Addition to Endovascular Trapping: A Case Report with Literature Review

Hak Cheol Ko, Seung Hwan Lee, Hee Sup Shin, Jun Seok Koh

BACKGROUND: The treatment protocol for hemifacial spasm (HFS) associated with dissecting vertebral artery aneurysm (DVAA) has not been established. CASE DESCRIPTION: A-42-year-old man with left HFS underwent endovascular trapping for a DVAA that was identified on brain imaging. Although the dissecting segment …

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