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Thermoluminescent dosimetry of panoramic radiography

Seo YS, Yu SK

This study aims to calibrate a thermoluminescence dosimeter (TLD) using a diagnostic radiation device and evaluate the dose of panoramic radiography. TLD-100s were calibrated using a solid-state dosimeter (Unfors Mult-O-Meter...
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Low-Dose 3D Rotational Angiography in Measuring the Size of Intracranial Aneurysm: In Vitro Feasibility Study Using Aneurysm Phantom

Ki HJ, Kim Bs, Kim JK, Choi JH, Shin YS, Choi Y, Shin NY, Jang J, Ahn Kj

Purpose: Three-dimensional (3D) measurement of intracranial aneurysms is important in planning endovascular treatment, and 3D rotational angiography (RA) is effective in accurate measurement. The purpose of this study was to...
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Tube Voltage, DNA Double-Strand Breaks, and Image Quality in Coronary CT Angiography

Lin ZX, Zhou F, Schoepf UJ, Pillai B, Zhou CS, Quan W, Bao XQ, Lu GM, Zhang LJ

Objective: To evaluate the effects of tube voltage on image quality in coronary CT angiography (CCTA), the estimated radiationdose, and DNA double-strand breaks (DSBs) in peripheral blood lymphocytes to optimize...
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Abdominal Digital Radiography with a Novel Post-Processing Technique: Phantom and Patient Studies

Kang H, Lee ES, Park HJ, Park BK, Park JY, Suh SW

Purpose The aim of this study was to evaluate the diagnostic image quality of low dose abdominal digital radiography processed with a new post-processing technique. Materials and Methods Abdominal radiographs from...
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Simultaneous Assessment of Left Ventricular Function and Coronary Artery Anatomy by Third-generation Dual-source Computed Tomography Using a Low Radiation Dose

Lee JW, Nam KJ, Kim JY, Jeong YJ, Lee G, Park SM, Lim SJ, Choo KS

BACKGROUND: To assess left ventricular function and coronary artery simultaneously by third-generation dual-source computed tomography (CT) using a low radiation dose. METHODS: A total of 48 patients (36 men, 12 women;...
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Using 2-mSv Appendiceal CT in Usual Practice for Adolescents and Young Adults: Willingness Survey of 579 Radiologists, Emergency Physicians, and Surgeons from 20 Hospitals

Kim HJ, Lee KH, Kim M, Park SB, Ko Y, LOCAT Group

OBJECTIVE: To survey care providers' willingness to use 2-mSv computed tomography (CT) in their usual practice for adolescents and young adults with suspected appendicitis. MATERIALS AND METHODS: An ethical committee approved...
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Myocardial Coverage and Radiation Dose in Dynamic Myocardial Perfusion Imaging Using Third-Generation Dual-Source CT

Takafuji M, Kitagawa K, Ishida M, Goto Y, Nakamura S, Nagasawa N, Sakuma H

OBJECTIVE: Third-generation dual-source computed tomography (3rd-DSCT) allows dynamic myocardial CT perfusion imaging (dynamic CTP) with a 10.5-cm z-axis coverage. Although the increased radiation exposure associated with the 50% wider scan...
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Accuracy of Model-Based Iterative Reconstruction for CT Volumetry of Part-Solid Nodules and Solid Nodules in Comparison with Filtered Back Projection and Hybrid Iterative Reconstruction at Various Dose Settings: An Anthropomorphic Chest Phantom Study

Kim SK, Kim C, Lee KY, Cha J, Lim HJ, Kang EY, Oh YW

OBJECTIVE: To investigate the accuracy of model-based iterative reconstruction (MIR) for volume measurement of part-solid nodules (PSNs) and solid nodules (SNs) in comparison with filtered back projection (FBP) or hybrid...
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Scapular Dyskinesis Assessment with Low Dose Three-Dimensional Wing Computer Tomography after Anatomical Union of Clavicle Fracture

Kim YS, Kim JG, Hwang JT, Shim JC, Jang SH

PURPOSE: Malunions after clavicle fractures are generally considered to cause scapular dyskinesis. This study aims to verify the incidence of scapular dyskinesis following anatomically reduced clavicle fracture and to verify...
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Dose comparison between prescription methods according to anatomical variations in intracavitary brachytherapy for cervical cancer

Choi E, Kim JH, Kim OB, Byun SJ, Kim JH, Oh YK

PURPOSE: We compared how doses delivered via two-dimensional (2D) intracavitary brachytherapy (ICBT) and three-dimensional (3D) ICBT varied anatomically. MATERIALS AND METHODS: A total of 50 patients who received 30 Gy of...
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Patient Radiation Dose in Neurointerventional Radiologic Procedure: A Tertiary Care Experience

Riabroi K, Khanungwanitkul K, Wattanapongpitak P, Krisanachinda A, Hongsakul

PURPOSE: Neurointerventional radiology procedures often require a long time to perform. Patient radiation dose is an important issue due to the hazards of ionizing radiation. The objective of this study...
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Uses of cone-beam computed tomography in San José, Costa Rica

Barba L, Berrocal A, Hidalgo A

PURPOSE: To analyze cone-beam computed tomography (CBCT) use, indications, and exposure parameters in San José, Costa Rica. MATERIALS AND METHODS: A cross-sectional study was performed. All CBCT examinations over a period...
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Comparison of Image Qualities of 80 kVp and 120 kVp CT Venography Using Model-Based Iterative Reconstruction at Same Radiation Dose

Baek HJ, Choo KS, Nam KJ, Hwang JY, Lee JW, Kim JY, Jung HJ

PURPOSE: To compare image qualities of 80 kVp CT venography (CTV) and 120 kVp CTV by model-based iterative reconstruction (MBIR) at the same radiation dose. MATERIALS AND METHODS: Sixty-nine patients that...
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Estimation of the effective dose of dental cone-beam computed tomography using personal computer-based Monte Carlo software

Kim EK, Han WJ, Choi JW, Battulga B

PURPOSE: To calculate the effective doses of cone-beam computed tomography (CBCT) using personal computer-based Monte Carlo (PCXMC) software (Radiation and Nuclear Safety Authority, Helsinki, Finland) and to compare the calculated...
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Size-Specific Dose Estimation In the Korean Lung Cancer Screening Project: Does a 32-cm Diameter Phantom Represent a Standard-Sized Patient in Korean Population?

Kim EY, Kim TJ, Goo JM, Kim HY, Lee JW, Lee S, Lim JT, Kim Y

OBJECTIVE: The purposes of this study were to evaluate size-specific dose estimate (SSDE) of low-dose CT (LDCT) in the Korean Lung Cancer Screening (K-LUCAS) project and to determine whether CT...
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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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Effective Dose in Abdominal Digital Radiography: Patient Factors

Jang JS, Koo HJ, Yang HJ, Park JH, Cho YC, Do KH

PURPOSE: To identify independent patient factors associated with an increased radiation dose, and to evaluate the effect of patient position on the effective dose in abdominal digital radiography. MATERIALS AND METHODS:...
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Assessment of Maxillary Sinus Wall Thickness with Paranasal Sinus Digital Tomosynthesis and CT

Byun J, Shim SS, Kim Y, Kong KA

PURPOSE: This study was performed to compare paranasal sinus tomosynthesis with computed tomography (CT) imaging as a radiologic tool to evaluate the paranasal sinuses, using measurement of the soft tissue...
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Windows Setting for Low kVp Abdominal CT: Comparison to 120-kVp CT Images

Kim JS, Choi JI, Choi MH, Park MY, Rha SE, Oh SN, Jung SE, Byun JY

PURPOSE: The purpose of the study is to identify the optimal window level (WL) and window width (WW) to maximize visualization of the findings for low kVp abdominal CT images...
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Factors Affecting Radiation Exposure during Lumbar Epidural Steroid Injection: A Prospective Study in 759 Patients

Kim S, Shin JH, Lee JW, Kang HS, Lee GY, Ahn JM

OBJECTIVE: To estimate and compare radiation exposure and intervention time during lumbar epidural steroid injection (ESI) 1) under different practitioners and methods with continuous fluoroscopic monitoring, and 2) under one...
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