Publications by authors named "Chul Y Chung"

To determine whether we could train convolutional neural network (CNN) models de novo with a small dataset, a total of 596 normal and abnormal ankle cases were collected and processed. Single- and multiview models were created to determine the effect of multiple views. Data augmentation was performed during training.

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Medical coding and billing processes in the United States are complex, cumbersome and poorly understood by radiologists. Despite the direct implications of radiology documentation on reimbursement, trainees and practicing radiologists typically receive limited relevant training. This article summarizes the payer structure including the state-based Children's Health Insurance Programs, discusses the essential processes by which radiologists request and receive reimbursement, details the mechanisms of coding diagnoses using International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes and imaging services using Current Procedural Terminology (CPT) and Healthcare Common Procedure Coding System (HCPCS) codes, and explores reimbursement and coding-related issues specific to pediatric radiology.

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Objective: Assessment of tumor response to chemotherapy is essential in managing malignant pediatric bone tumors prior to resection.

Subjects And Methods: Pre-chemotherapy and post-chemotherapy osteosarcoma and Ewing sarcoma cases (n=18) were analyzed with apparent diffusion coefficient (ADC) values measured by two readers.

Results: Treated tumors demonstrated significantly greater ADC values compared to untreated tumors (p<0.

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Parenchymal lung metastases are common in malignant melanoma. However, endobronchial metastatic melanoma is uncommon. In this report, we describe a patient with a hyperdense endobronchial mass diagnosed as a melanoma metastasis.

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