- 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
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Kim SK, Kim C, Lee KY, Cha J, Lim HJ, Kang EY, Oh YW
- KMID: 2467030
- Korean J Radiol.
- 2019 Jul;20(7):1195-1206.
- doi: 10.3348/kjr.2018.0893
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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- Quantitative Feasibility Evaluation of ¹¹C-Methionine Positron Emission Tomography Images in Gamma Knife Radiosurgery : Phantom-Based Study and Clinical Application
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Lim SH, Jung TY, Jung S, Kim IY, Moon KS, Kwon SY, Jang WY
- KMID: 2463679
- J Korean Neurosurg Soc.
- 2019 Jul;62(4):476-486.
- doi: 10.3340/jkns.2019.0104
OBJECTIVE: The functional information of ¹¹C-methionine positron emission tomography (MET-PET) images can be applied for Gamma knife radiosurgery (GKR) and its image quality may affect defining the tumor. This study... -
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- Development of a new ball-type phantom for evaluation of the image layer of panoramic radiography
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Yeom HG, Kim JE, Huh KH, Yi WJ, Heo MS, Lee SS, Choi SC
- KMID: 2450165
- Imaging Sci Dent.
- 2018 Dec;48(4):255-259.
- doi: 10.5624/isd.2018.48.4.255
PURPOSE: This study proposes a new ball-type phantom for evaluation of the image layer of panoramic radiography. MATERIALS AND METHODS: The arch shape of an acrylic resin phantom was derived from... -
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- Metal artifact production and reduction in CBCT with different numbers of basis images
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Queiroz PM, Santaella , Groppo FC, Freitas DQ
- KMID: 2406981
- Imaging Sci Dent.
- 2018 Mar;48(1):41-44.
- doi: 10.5624/isd.2018.48.1.41
PURPOSE: To evaluate the effect of different numbers of basis images and the use of metal artifact reduction (MAR) on the production and reduction of artifacts in cone-beam computed tomography... -
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- Optimizing the reconstruction filter in cone-beam CT to improve periodontal ligament space visualization: An in vitro study
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Houno Y, Hishikawa , Gotoh KI, Naitoh M, Mitani A, Noguchi T, Ariji E, Kodera Y
- KMID: 2390085
- Imaging Sci Dent.
- 2017 Sep;47(3):199-207.
- doi: 10.5624/isd.2017.47.3.199
PURPOSE: Evaluation of alveolar bone is important in the diagnosis of dental diseases. The periodontal ligament space is difficult to clearly depict in cone-beam computed tomography images because the reconstruction... -
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- Comparison of Image Quality between Mammography Dedicated Monitor and UHD 4K Monitor, Using Standard Mammographic Phantom: A Preliminary Study
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Lee JY, Cha SJ, Hong SH, Kim SY, Kim YH, Kim YS, Kim JA
- KMID: 2371682
- J Korean Soc Radiol.
- 2017 Mar;76(3):173-178.
- doi: 10.3348/jksr.2017.76.3.173
PURPOSE: Using standard mammographic phantom images, we compared the image quality obtained between a mammography dedicated 5 megapixel monitor (5M) and a UHD 4K (4K) monitor with digital imaging and... -
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- Influence of Bâ‚-Inhomogeneity on Pharmacokinetic Modeling of Dynamic Contrast-Enhanced MRI: A Simulation Study
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Park B, Choi BS, Sung YS, Woo DC, Shim WH, Kim KW, Choi YS, Pae SJ, Suh JY, Cho H, Kim JK
- KMID: 2427227
- Korean J Radiol.
- 2017 ;18(4):585-596.
- doi: 10.3348/kjr.2017.18.4.585
OBJECTIVE: To simulate the Bâ‚-inhomogeneity-induced variation of pharmacokinetic parameters on dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI). MATERIALS AND METHODS: Bâ‚-inhomogeneity-induced flip angle (FA) variation was estimated in a phantom study. Monte... -
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- Evaluation of factors influencing arterial Doppler waveforms in an in vitro flow phantom
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Sung CK, Lee KH, Kim SH
- KMID: 2365575
- Ultrasonography.
- 2017 Jan;36(1):39-52.
- doi: 10.14366/usg.15055
PURPOSE: The aim of this study was to investigate factors that influence arterial Doppler waveforms in an in vitro phantom to provide a more accurate and comprehensive explanation of the... -
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- Preclinical evaluation of acoustic radiation force impulse measurements in regions of heterogeneous elasticity
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Hollerieth K, Gaßmann B, Wagenpfeil S, Moog P, Vo-Cong MT, Heemann U, Stock KF
- KMID: 2354363
- Ultrasonography.
- 2016 Oct;35(4):345-352.
- doi: 10.14366/usg.16024
PURPOSE: The purpose of this study was to compare the reliability of ultrasound-based shear wave elastography in regions of homogeneous versus heterogeneous elasticity by using two different probes. METHODS: Using acoustic... -
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- Contrast reference values in panoramic radiographic images using an arch-form phantom stand
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Shin JM, Lee C, Kim JE, Huh KH, Yi WJ, Heo MS, Choi SC, Lee SS
- KMID: 2408252
- Imaging Sci Dent.
- 2016 Sep;46(3):203-210.
- doi: 10.5624/isd.2016.46.3.203
PURPOSE: The purpose of this study was to investigate appropriate contrast reference values (CRVs) by comparing the contrast in phantom and clinical images. MATERIALS AND METHODS: Phantom contrast was measured using... -
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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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- Evaluation of the effective dose and image quality of low-dose multi-detector CT for orthodontic treatment planning
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Chung GC, Han WJ, Kim EK
- KMID: 2270927
- Korean J Oral Maxillofac Radiol.
- 2010 Mar;40(1):15-23.
PURPOSE: This study was designed to compare the effective doses from low-dose and standard-dose multi-detector CT (MDCT) scanning protocols and evaluate the image quality and the spatial resolution of the... -
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- Measurement of hard tissue density of head phantom based on the HU by using CBCT
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Kim MS, Kim JD, Kang DW
- KMID: 2034178
- Korean J Oral Maxillofac Radiol.
- 2009 Sep;39(3):115-120.
PURPOSE: The purpose of this study was to determine a conversion coefficient for Hounsfield Units(HU) to material density (g cm-3) obtained from cone-beam computed tomography (CBMercuRay(TM)) data and to measure... -
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- Quantitative Analysis of Airway Walls Using CT Software
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Kim TJ, Goo JM, Lee KW, Lee HJ, Kim KG, Im JG
- KMID: 2103927
- J Korean Radiol Soc.
- 2008 Dec;59(6):395-403.
- doi: 10.3348/jkrs.2008.59.6.395
PURPOSE: The purpose of this study was to develop dedicated software for quantitative analysis of the airways and to validate the software using airway phantoms and excised swine lung. MATERIALS AND... -
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- Image characteristics of cone beam computed tomography using a CT performance phantom
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Han CW, Kim GT, Choi YS, Hwang EH
- KMID: 2270901
- Korean J Oral Maxillofac Radiol.
- 2007 Sep;37(3):157-163.
PURPOSE: To evaluate the characteristics of (widely used) cone beam computed tomography (CBCT) images. MATERIALS AND METHODS: Images were obtained with CT performance phantoms (The American Association of Physicists in Medicine;... -
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