- Adaptive Iterative Dose Reduction Algorithm in CT: Effect on Image Quality Compared with Filtered Back Projection in Body Phantoms of Different Sizes
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Kim M, Lee JM, Yoon JH, Son H, Choi JW, Han JK, Choi BI
- KMID: 1705573
- Korean J Radiol.
- 2014 Apr;15(2):195-204.
- doi: 10.3348/kjr.2014.15.2.195
OBJECTIVE: To evaluate the impact of the adaptive iterative dose reduction (AIDR) three-dimensional (3D) algorithm in CT on noise reduction and the image quality compared to the filtered back projection... -
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- Which Phantom Is Better for Assessing the Image Quality in Full-Field Digital Mammography?: American College of Radiology Accreditation Phantom versus Digital Mammography Accreditation Phantom
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Song SE, Seo BK, Yie A, Ku BK, Kim HY, Cho KR, Chung HH, Lee SH, Hwang KW
- KMID: 1397509
- Korean J Radiol.
- 2012 Dec;13(6):776-783.
- doi: 10.3348/kjr.2012.13.6.776
OBJECTIVE: To compare between the American College of Radiology (ACR) accreditation phantom and digital mammography accreditation phantom in assessing the image quality in full-field digital mammography (FFDM). MATERIALS AND METHODS: In... -
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- A Comparison of Two Commercial Volumetry Software Programs in the Analysis of Pulmonary Ground-Glass Nodules: Segmentation Capability and Measurement Accuracy
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Kim H, Park CM, Lee SM, Lee HJ, Goo JM
- KMID: 1715775
- Korean J Radiol.
- 2013 Aug;14(4):683-691.
- doi: 10.3348/kjr.2013.14.4.683
OBJECTIVE: To compare the segmentation capability of the 2 currently available commercial volumetry software programs with specific segmentation algorithms for pulmonary ground-glass nodules (GGNs) and to assess their measurement accuracy. MATERIALS... -
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- Effects of MR Parameter Changes on the Quantification of Diffusion Anisotropy and Apparent Diffusion Coefficient in Diffusion Tensor Imaging: Evaluation Using a Diffusional Anisotropic Phantom
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Kim SJ, Choi CG, Kim JK, Yun SC, Jahng GH, Jeong HK, Kim EJ
- KMID: 2070173
- Korean J Radiol.
- 2015 Apr;16(2):297-303.
- doi: 10.3348/kjr.2015.16.2.297
OBJECTIVE: To validate the usefulness of a diffusional anisotropic capillary array phantom and to investigate the effects of diffusion tensor imaging (DTI) parameter changes on diffusion fractional anisotropy (FA) and... -
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- The Relationship between Subjective and Objective Parameters in CT Phantom Image Evaluation
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Park HJ, Jung SE, Lee YJ, Cho WI, Do KH, Kim SH, Kim KH
- KMID: 1093964
- Korean J Radiol.
- 2009 Oct;10(5):490-495.
- doi: 10.3348/kjr.2009.10.5.490
OBJECTIVE: To evaluate whether there is a relationship between subjective parameters determined by a reviewer (spatial resolution, low contrast resolution, and artifacts) and objective parameters (the CT number of water,... -
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- Comparison of Unmonochromatized Synchrotron Radiation and Conventional X-rays in the Imaging of Mammographic Phantom and Human Breast Specimens: A Preliminary Result
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Jung H, Kim HJ, Kim EK, Hong JO, Je JH, Hwu Y, Tsai WL, Magaritondo G, Yoo HS
- KMID: 2158118
- Yonsei Med J.
- 2005 Feb;46(1):95-103.
- doi: 10.3349/ymj.2005.46.1.95
A simple imaging setup based on the principle of coherence-based contrast X-ray imaging with unmonochromatized synchrotron radiation was used for studying mammographic phantom and human breast specimens. The use of... -
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- Digital Tomosynthesis of the Chest: Comparison of Patient Exposure Dose and Image Quality between Standard Default Setting and Low Dose Setting
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Hwang HS, Chung MJ, Lee KS
- KMID: 1705470
- Korean J Radiol.
- 2013 Jun;14(3):525-531.
- doi: 10.3348/kjr.2013.14.3.525
OBJECTIVE: To determine the optimum low dose (LD) digital tomosynthesis (DT) setting, and to compared the image quality of the LD DT with that of the standard default (SD) DT. MATERIALS... -
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- The T2-Shortening Effect of Gadolinium and the Optimal Conditions for Maximizing the CNR for Evaluating the Biliary System: a Phantom Study
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Lee MJ, Kim MJ, Yoon CS, Song SY, Park K, Kim WS
- KMID: 1122333
- Korean J Radiol.
- 2011 Jun;12(3):358-364.
- doi: 10.3348/kjr.2011.12.3.358
OBJECTIVE: Clear depiction of the common bile duct is important when evaluating neonatal cholestasis in order to differentiate biliary atresia from other diseases. During MR cholangiopancreatography, the T2-shortening effect of... -
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- Estimating the Absorbed Dose to Critical Organs During Dual X-ray Absorptiometry
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Dizaji MM, Sharafi AA, Larijani B, Mokhlesian N, Hasanzadeh H
- KMID: 1098188
- Korean J Radiol.
- 2008 Apr;9(2):102-110.
- doi: 10.3348/kjr.2008.9.2.102
OBJECTIVE: The purpose of this study is to estimate a patient's organ dose (effective dose) during performance of dual X-ray absorptiometry by using the correlations derived from the surface dose... -
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- Quantitative Analysis of the Effect of Iterative Reconstruction Using a Phantom: Determining the Appropriate Blending Percentage
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Kim HG, Chung YE, Lee YH, Choi JY, Park MS, Kim MJ, Kim KW
- KMID: 2352814
- Yonsei Med J.
- 2015 Jan;56(1):253-261.
- doi: 10.3349/ymj.2015.56.1.253
PURPOSE: To investigate the optimal blending percentage of adaptive statistical iterative reconstruction (ASIR) in a reduced radiation dose while preserving a degree of image quality and texture that is similar... -
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- Optimization of the Scan Protocol for the Reduction of Diaphragmatic Motion Artifacts Depicted on CT Angiography: a Phantom Study Simulating Pediatric Patients with Free Breathing
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Baek JH, Lee W, Chang KH, Chung JW, Park JH
- KMID: 1779453
- Korean J Radiol.
- 2009 Jun;10(3):260-268.
- doi: 10.3348/kjr.2009.10.3.260
OBJECTIVE: This study was designed to optimize the scan protocol of CT angiography to reduce diaphragmatic motion artifacts in pediatric patients with free-breathing. MATERIALS AND METHODS: A phantom with twelve... -
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