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Advanced Medical Use of Three-Dimensional Imaging in Congenital Heart Disease: Augmented Reality, Mixed Reality, Virtual Reality, and Three-Dimensional Printing

Goo HW, Park SJ, Yoo SJ

Three-dimensional (3D) imaging and image reconstruction play a prominent role in the diagnosis, treatment planning, and post-therapeutic monitoring of patients with congenital heart disease. More interactive and realistic medical experiences...
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Portable Low-Cost MRI System Based on Permanent Magnets/Magnet Arrays

Huang S, Ren ZH, Obruchkov , Gong J, Dykstra R, Yu W

Portable low-cost magnetic resonance imaging (MRI) systems have the potential to enable “point-of-care” and timely MRI diagnosis, and to make this imaging modality available to routine scans and to people...
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Diagnosis of Sarcopenia in Head and Neck Computed Tomography: Cervical Muscle Mass as a Strong Indicator of Sarcopenia

Ufuk F, Herek D, Yüksel D

OBJECTIVES: Patients with head and neck cancer (HNC) have a high risk of sarcopenia, which is associated with poor prognosis. Skeletal-muscle area and index at the third lumbar (L3) vertebra...
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Image Quality and Radiation Dose in CT Venography Using Model-Based Iterative Reconstruction at 80 kVp versus Adaptive Statistical Iterative Reconstruction-V at 70 kVp

Park C, Choo KS, Kim JH, Nam KJ, Lee JW, Kim JY

OBJECTIVE: To compare the objective and subjective image quality indicators and radiation doses of computed tomography (CT) venography performed using model-based iterative reconstruction (MBIR) at 80 kVp and adaptive statistical...
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Three Dimensional Measurement of Ideal Trajectory of Pedicle Screws of Subaxial Cervical Spine Using the Algorithm Could Be Applied for Robotic Screw Insertion

Huh J, Hyun JH, Park HG, Kwak HY

OBJECTIVE: To define optimal method that calculate the safe direction of cervical pedicle screw placement using computed tomography (CT) image based three dimensional (3D) cortical shell model of human cervical...
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Deep Learning in MR Image Processing

Lee D, Lee J, Ko J, Yoon J, Ryu K, Nam Y

Recently, deep learning methods have shown great potential in various tasks that involve handling large amounts of digital data. In the field of MR imaging research, deep learning methods are...
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Coronary CT Angiography with Knowledge-Based Iterative Model Reconstruction for Assessing Coronary Arteries and Non-Calcified Predominant Plaques

Li T, Tang T, Yang L, Zhang X, Li X, Luo C

OBJECTIVE: To assess the effects of iterative model reconstruction (IMR) on image quality for demonstrating non-calcific high-risk plaque characteristics of coronary arteries. MATERIALS AND METHODS: This study included 66 patients (53...
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Morphologic Alterations in Amygdala Subregions of Adult Patients with Bipolar Disorder

Lee HJ, Han KM, Kim A, Kang W, Kang Y, Kang J, Won E, Tae WS, Ham BJ

OBJECTIVES: Previous studies have revealed inconsistent results on amygdala volume in adult bipolar disorder (BD) patients compared to healthy controls (HC). Since the amygdala encompasses multiple subregions, the subtle volume...
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Advanced Methods in Dynamic Contrast Enhanced Arterial Phase Imaging of the Liver

Kim YC

Dynamic contrast enhanced (DCE) magnetic resonance (MR) imaging plays an important role in non-invasive detection and characterization of primary and metastatic lesions in the liver. Recently, efforts have been made...
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CT Image Conversion among Different Reconstruction Kernels without a Sinogram by Using a Convolutional Neural Network

Lee SM, Lee JG, Lee G, Choe J, Do KH, Kim N, Seo JB

OBJECTIVE: The aim of our study was to develop and validate a convolutional neural network (CNN) architecture to convert CT images reconstructed with one kernel to images with different reconstruction...
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Generating Motion- and Distortion-Free Local Field Map Using 3D Ultrashort TE MRI: Comparison with Tâ‚‚* Mapping

Jeong K, Thapa B, Han BS, Kim D, Jeong EK

PURPOSE: To generate phase images with free of motion-induced artifact and susceptibility-induced distortion using 3D radial ultrashort TE (UTE) MRI. MATERIALS AND METHODS: The field map was theoretically derived by solving...
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Computer programme to assess mandibular cortex morphology in cases of medication-related osteonecrosis of the jaw with osteoporosis or bone metastases

Ogura I, Kobayashi , Nakahara K, Haga-Tsujimura M, Igarashi K, Katsumata

PURPOSE: The purpose of this study was to evaluate the morphology of the mandibular cortex in cases of medication-related osteonecrosis of the jaw (MRONJ) in patients with osteoporosis or bone...
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Effects of energy level, reconstruction kernel, and tube rotation time on Hounsfield units of hydroxyapatite in virtual monochromatic images obtained with dual-energy CT

Jeong DK, Lee SS, Kim JE, Huh KH, Yi WJ, Heo MS, Choi SC

PURPOSE: This study was performed to investigate the effects of energy level, reconstruction kernel, and tube rotation time on Hounsfield unit (HU) values of hydroxyapatite (HA) in virtual monochromatic images...
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Tomographic density imaging using modified DF–DBIM approach

Huy TQ, Cuc NT, Nguyen VD, Long TT, Tan TD

Ultrasonic computed tomography based on back scattering theory is the most powerful and accurate tool in ultrasound based imaging approaches because it is capable of providing quantitative information about the...
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A Case of Coumadin Ridge Confirmed by Surgery: Comparison Between Cardiac Computed Tomographic Images and Operative Findings

Yeon MR, Yoo JY, Kim SJ, Hong JM

The coumadin ridge, a ridge of atrial tissue separating the left atrial appendage from the left upper pulmonary vein, is considered to be a normal anatomic variant. A prominent coumadin...
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Added Value of Bone Suppression Image in the Detection of Subtle Lung Lesions on Chest Radiographs with Regard to Reader's Expertise

Hong GS, Do KH, Lee CW

BACKGROUND: Chest radiographs (CXR) are the most commonly used imaging techniques by various clinicians and radiologists. However, detecting lung lesions on CXR depends largely on the reader's experience level, so...
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Diffusion Tensor Imaging and Quantitative Magnetic Resonance Volumetric Assessment in the Diagnosis of Hemimegalencephaly: A Case Report

Yoo SJ, Lee JY, Lee YJ, Park DW, Kim TY, Kim HJ

A 27-year-old female presented with repeated seizures. As the left frontal lobe volume was enlarged in comparison with the right frontal lobe, hemimegalencephaly was suggested. Abnormal white matter fiber tracts...
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Use of Iterative Reconstruction and a Small Contrast Volume in Rabbit Kidney CT: Comparison with Conventional Protocol

Kim R, Kim SY, Cho JY, Lee J, Kim SH

PURPOSE: To investigate the quality of rabbit kidney computed tomography (CT) images obtained using a small contrast volume and iterative reconstruction (IR). MATERIALS AND METHODS: Twenty sedated rabbits were used. Four...
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Contrast-Enhanced CT with Knowledge-Based Iterative Model Reconstruction for the Evaluation of Parotid Gland Tumors: A Feasibility Study

Park CJ, Kim KW, Lee HJ, Kim MJ, Kim J

OBJECTIVE: The purpose of this study was to determine the diagnostic utility of low-dose CT with knowledge-based iterative model reconstruction (IMR) for the evaluation of parotid gland tumors. MATERIALS AND METHODS:...
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What Do We Measure in Oncology PET?

Pak K, Kim SJ

Positron emission tomography (PET) has come to the practice of oncology. It is known that 18F-fluorodeoxyglucose (FDG) PET is more sensitive for the assessment of treatment response than conventional imaging....
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