- 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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- Ideal Bolus Geometry Predicted from In vitro Pulsatile Flow Phantom and Artificial Neural Networks for the Optimization of Image Acquisition Protocols for Aortic Contrast-Enhanced Computed Tomography Angiography
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Youn SW, Kwon J, Kim J, Park J, Ahn D, Lee J
- KMID: 2465771
- Cardiovasc Imaging Asia.
- 2019 Apr;3(2):35-46.
- doi: 10.22468/cvia.2018.00248
OBJECTIVE: This study sought to explore the novel use of artificial neural networks (ANNs) to develop a contrast-enhanced computed tomography (CT) angiographic (CECTA) protocol based on ideal bolus geometry. MATERIALS AND... -
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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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- Analysis of Small-Field Dosimetry with Various Detectors
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Park SY, Choi BG, Lee DM, Jang NY
- KMID: 2434651
- Prog Med Phys.
- 2018 Dec;29(4):164-164.
- doi: 10.14316/pmp.2018.29.4.164
We evaluated the performance of various detectors for small-field dosimetry with field sizes defined by a high-definition (HD) multileaf collimator (MLC) system. For small-field dosimetry, diodes referred to as “RAZOR... -
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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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- Effect of field-of-view size on gray values derived from cone-beam computed tomography compared with the Hounsfield unit values from multidetector computed tomography scans
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Shokri A, Ramezani L, Bidgoli M, Akbarzadeh M, Ghazikhanlu-Sani K, Fallahi-Sichani H
- KMID: 2406980
- Imaging Sci Dent.
- 2018 Mar;48(1):31-39.
- doi: 10.5624/isd.2018.48.1.31
PURPOSE: This study aimed to evaluate the effect of field-of-view (FOV) size on the gray values derived from conebeam computed tomography (CBCT) compared with the Hounsfield unit values from multidetector... -
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- Three-Dimensional Fast Spin-Echo Imaging without Fat Suppression of the Knee: Diagnostic Accuracy Comparison to Fat-Suppressed Imaging on 1.5T MRI
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Cho HW, Suh JS, Park JO, Kim HS, Chung SY, Lee YH, Hahn S
- KMID: 2418901
- Yonsei Med J.
- 2017 Nov;58(6):1186-1194.
- doi: 10.3349/ymj.2017.58.6.1186
PURPOSE: To evaluate the diagnostic performance of three-dimensional fast spin-echo (3D FSE-Cube) without fat suppression (NFS) for detecting knee lesions, using comparison to 3D FSE-Cube with fat suppression (FS). MATERIALS AND... -
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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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- The Effects of Breathing Motion on DCE-MRI Images: Phantom Studies Simulating Respiratory Motion to Compare CAIPIRINHA-VIBE, Radial-VIBE, and Conventional VIBE
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Lee CK, Seo N, Kim B, Huh J, Kim JK, Lee SS, Kim IS, Nickel D, Kim KW
- KMID: 2427941
- Korean J Radiol.
- 2017 Apr;18(2):289-298.
- doi: 10.3348/kjr.2017.18.2.289
OBJECTIVE: To compare the breathing effects on dynamic contrast-enhanced (DCE)-MRI between controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA)-volumetric interpolated breath-hold examination (VIBE), radial VIBE with k-space-weighted image... -
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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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- Dual-Energy CT: New Horizon in Medical Imaging
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Goo HW, Goo JM
- KMID: 2427225
- Korean J Radiol.
- 2017 ;18(4):555-569.
- doi: 10.3348/kjr.2017.18.4.555
Dual-energy CT has remained underutilized over the past decade probably due to a cumbersome workflow issue and current technical limitations. Clinical radiologists should be made aware of the potential clinical... -
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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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- Phantom Study of a New Laser-Etched Needle for Improving Visibility During Ultrasonography-Guided Lumbar Medial Branch Access With Novices
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Park JW, Cheon MW, Lee MH
- KMID: 2356642
- Ann Rehabil Med.
- 2016 Aug;40(4):575-582.
- doi: 10.5535/arm.2016.40.4.575
OBJECTIVE: To compare the visibility and procedural parameters between a standard spinal needle and a new laser-etched needle (LEN) in real-time ultrasonography guided lumbar medial branch access in a phantom... -
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- Change of Radiologic Index of Foot according to Radiation Projection Angle: A Study Using Phantom Foot
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Kim EJ, Seo SG, Lee DY
- KMID: 2132459
- J Korean Foot Ankle Soc.
- 2015 Dec;19(4):165-170.
- doi: 10.14193/jkfas.2015.19.4.165
PURPOSE: The purpose of this study is to analyze the measurement differences of simple radiographs according to radiation projection angle using a phantom and to propose methods for objective analysis... -
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- Intervention Planning Using a Laser Navigation System for CT-Guided Interventions: A Phantom and Patient Study
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Gruber-Rouh T, Lee C, Bolck J, Naguib NN, Schulz B, Eichler K, Aschenbach R, Wichmann J, Vogl TJ, Zangos S
- KMID: 2155545
- Korean J Radiol.
- 2015 Aug;16(4):729-735.
- doi: 10.3348/kjr.2015.16.4.729
OBJECTIVE: To investigate the accuracy, efficiency and radiation dose of a novel laser navigation system (LNS) compared to those of free-handed punctures on computed tomography (CT). MATERIALS AND METHODS: Sixty punctures... -
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- Effect of the High-Pitch Mode in Dual-Source Computed Tomography on the Accuracy of Three-Dimensional Volumetry of Solid Pulmonary Nodules: A Phantom Study
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Hwang SH, Oh YW, Ham SY, Kang EY, Lee KY
- KMID: 2155535
- Korean J Radiol.
- 2015 Jun;16(3):641-647.
- doi: 10.3348/kjr.2015.16.3.641
OBJECTIVE: To evaluate the influence of high-pitch mode (HPM) in dual-source computed tomography (DSCT) on the accuracy of three-dimensional (3D) volumetry for solid pulmonary nodules. MATERIALS AND METHODS: A lung phantom... -
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