Publications by authors named "Hocheol Choi"

: Peripherally inserted central catheter (PICC) placement plays an important role in clinical practice. This study aimed to provide an equation for the proper estimation of catheter length in cases of PICC placement without imaging guidance in relation to patient height, weight, sex, and age. : For 1137 PICC placement cases in both arm veins of 954 patients at a single center, the elbow crease to the cavoatrial junction length (ECL) was calculated as follows: ECL = (PICC length) + (distance from the elbow crease to the puncture site).

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: Acute mesenteric ischemia (AMI) is a life-threatening condition, and in 50% of patients, AMI is caused by acute superior mesenteric artery (SMA) embolism. Endovascular treatment is increasingly being considered the primary modality in selected cases. Many studies have reported that percutaneous aspiration embolectomy using a guiding catheter and thrombolysis with recombinant tissue plasminogen activator (rtPA) are effective in treating SMA embolism.

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: Biliary cast syndrome, which was first reported in 1975, is a rare disease that occurs after liver transplantation. The incidence is even lower in patients who have not undergone liver transplantation. This study reports a rare case of biliary cast syndrome with cholangiocarcinoma-like lesions in a patient who did not undergo liver transplantation.

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Background and Objectives: This study aimed to evaluate the utility and accuracy of dual-energy automatic plaque removal (DE-APR) in patients with symptomatic peripheral arterial disease (PAD) using digital subtraction angiography (DSA) as the reference standard. Materials and Methods: We retrospectively analyzed 100 patients with PAD who underwent DE computed tomography angiography (DE-CTA) and DSA of the lower extremities. DE-CTA was used to generate APR subtracted images.

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An osteosarcoma of cardiac origin is extremely rare, and a comprehensive description of MR imaging (MRI) findings of cardiac osteosarcoma and its metastasis in the femur have not been reported in the literature. We present a case of cardiac osteosarcoma in a 47-year-old woman and its metastasis to the femur, focusing on the description of MRI findings of the cardiac and metastatic bony osteosarcoma with a histopathologic correlation.

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Purpose: To classify peripheral pulmonary arterial pseudoaneurysms (PAPs) associated with infectious lung diseases according to angiographic findings and to determine treatment options for PAPs on the basis of angiographic classifications.

Materials And Methods: The institutional review board approved this study. A total of 24 patients with massive hemoptysis had PAPs that were detected at pulmonary computed tomographic (CT) angiography; underlying diseases were pulmonary tuberculosis (n = 16), a fungus ball (n = 5), lung abscess (n = 2), and pneumonia (n = 1).

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We report an uncommon case of a life-threatening abdominal wall hematoma after liposuction. One day after liposuction surgery, the patient experienced syncope and low blood pressure. Enhanced computed tomography (CT) demonstrated an extravasation in an abdominal wall hematoma.

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It has been reported that anastomoses between the bronchial and the coronary arteries can become dilated and functional in certain diseases, provoking angina pectoris through coronary steal syndrome. The condition can be treated with endovascular or surgical management. It is possible that this abnormality may be associated with hemoptysis in patients with parenchymal or vascular disease of the lung but this condition is very rare.

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Background: It has been suggested that multidetector computed tomographic coronary angiography (MDCT-CA) may be a reliable modality for the diagnosis and assessment of myocardial bridge (MB). However, the correlation between MB measurements of MDCT-CA and conventional coronary angiography (CCA) has not been determined.

Methods: We assessed the correlation between MDCT-CA and CCA in MB measurements.

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