- Effect of Total Collimation Width on Relative Electron Density, Effective Atomic Number, and Stopping Power Ratio Acquired by Dual-Layer Dual-Energy Computed Tomography
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Jung S, Kim B, Yoon E, Kim Ji, Park JM, Choi CH
- KMID: 2524164
- Prog Med Phys.
- 2021 Dec;32(4):165-171.
- doi: 10.14316/pmp.2021.32.4.165
Purpose: This study aimed to evaluate the effect of collimator width on effective atomic number (EAN), relative electron density (RED), and stopping power ratio (SPR) measured by dual-layer dual-energy computed... -
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- Influence of receiver bandwidth on MRI artifacts caused by orthodontic brackets composed of different alloys
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Abdala-Junior R, No-Cortes J, Arita ES, Ackerman JL, Berbel da Silva RL, Kim JH, Gonzalez Cortes AR
- KMID: 2527087
- Imaging Sci Dent.
- 2021 Dec;51(4):413-419.
- doi: 10.5624/isd.20210099
Purpose: The aim of this in vitro study was to assess the role of bandwidth on the area of magnetic resonance imaging (MRI) artifacts caused by orthodontic appliances composed of... -
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- Efficacy of 3D-Printed Titanium Mesh-Type Patient-Specific Implant for Cranioplasty
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Yoon HG, Ko Y, Kim YS, Bak KH, Chun HJ, Na MK, Yang S, Yi HJ, Choi KS
- KMID: 2523218
- Korean J Neurotrauma.
- 2021 Oct;17(2):91-99.
- doi: 10.13004/kjnt.2021.17.e25
Objective: Autologous bone grafting for cranioplasty is associated with a high infection rate and bone absorption. Synthetic implant materials for cranioplasty have been developed. In this study, we evaluated the... -
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- Comparison of the Quality of Various Polychromatic and Monochromatic Dual-Energy CT Images with or without a Metal Artifact Reduction Algorithm to Evaluate Total Knee Arthroplasty
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Choo HJ, Lee SJ, Kim DW, Lee YJ, Baek JW, Han Jy, Heo YJ
- KMID: 2518718
- Korean J Radiol.
- 2021 Aug;22(8):1341-1351.
- doi: 10.3348/kjr.2020.0548
Objective: To compare the quality of various polychromatic and monochromatic images with or without using an iterative metal artifact reduction algorithm (iMAR) obtained from a dual-energy computed tomography (CT) to... -
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- Cone-beam computed tomography artifacts in the presence of dental implants and associated factors: An integrative review
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Terrabuio BR, Carvalho CG, Peralta-Mamani M, Silva Santos PSd, Rubira-Bullen IRF, Fischer Rubira CM
- KMID: 2527050
- Imaging Sci Dent.
- 2021 Jun;51(2):93-106.
- doi: 10.5624/isd.20200320
Purpose This study was conducted to review the literature regarding the types of cone-beam computed tomography (CBCT) artifacts around dental implants and the factors that influence their formation. Materials and Methods A search... -
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- Feasibility of Improving the Accuracy of Dose Calculation Using Hybrid Computed Tomography Images: A Phantom Study
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Jeon H, Kim DW, Joo JH, Ki Y, Kim W, Park D, Nam J, Kim DH
- KMID: 2514822
- Prog Med Phys.
- 2021 Mar;32(1):18-24.
- doi: 10.14316/pmp.2021.32.1.18
Purpose: Kilovoltage computed tomography (kV-CT) is essential for radiation treatment planning. However, kV-CT images are significantly distorted by artifacts when a metallic prosthesis is present in the patient's body. Thus, the... -
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- Assessment of the efficiency of a pre- versus post-acquisition metal artifact reduction algorithm in the presence of 3 different dental implant materials using multiple CBCT settings: An in vitro study
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Shahmirzadi S, Sharaf RA, Saadat S, Moore WS, Geha H, Tamimi D, Kocasarac HD
- KMID: 2527049
- Imaging Sci Dent.
- 2021 Mar;51(1):1-7.
- doi: 10.5624/isd.20200094
Purpose The aim of this study was to assess artifacts generated in cone-beam computed tomography (CBCT) of 3 types of dental implants using 3 metal artifact reduction (MAR) algorithm conditions (pre-acquisition... -
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- Influence of CBCT metal artifact reduction on vertical radicular fracture detection
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Oliveira MR, Sousa TO, Caetano AF, Paiva RRd, Valladares-Neto J, Yamamoto-Silva FP, Garcia Silva MA
- KMID: 2527042
- Imaging Sci Dent.
- 2021 Mar;51(1):55-62.
- doi: 10.5624/isd.20200191
Purpose This study evaluated the influence of a metal artifact reduction (MAR) tool in a cone-beam computed tomography (CBCT) device on the diagnosis of vertical root fractures (VRFs) in teeth with... -
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- Characteristics of Magnetic Resonance-Based Attenuation Correction Map on Phantom Study in Positron Emission Tomography/Magnetic Resonance Imaging System
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Hong C
- KMID: 2510480
- Prog Med Phys.
- 2020 Dec;31(4):189-193.
- doi: 10.14316/pmp.2020.31.4.189
An MR-based attenuation correction (MRAC) map plays an important role in quantitative positron emission tomography (PET) image evaluation in PET/magnetic resonance imaging (MRI) systems.However, the MRAC map is affected by... -
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- Deep Learning in MR Motion Correction:a Brief Review and a New Motion Simulation Tool (view2Dmotion)
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Lee S, Jung S, Jung KJ, Kim DH
- KMID: 2510449
- Investig Magn Reson Imaging.
- 2020 Dec;24(4):196-206.
- doi: 10.13104/imri.2020.24.4.196
With the development of deep-learning techniques, the application of deep learning in MR imaging processing seems to be growing. Accordingly, deep learning has also been introduced in motion correction and... -
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- Advanced Wiener Filter for Helical Windmill Artifact Reduction
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Kim H, Cho S, Cho S
- KMID: 2510052
- Prog Med Phys.
- 2020 Sep;31(S1):S24.
Purpose: Inadequate sampling along the longitudinal direction in a helical fan-/cone-beam CT can cause a windmill artifact rotating with black/white patterns in the axial planes. Furthermore, this artifact contaminates structural... -
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- Heart Rate Variability Analysis: How Much Artifact Can We Remove?
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Sheridan DC, Dehart R, Lin A, Sabbaj M, Baker SD
- KMID: 2507272
- Psychiatry Investig.
- 2020 Sep;17(9):960-965.
- doi: 10.30773/pi.2020.0168
Objective Heart rate variability (HRV) evaluates small beat-to-beat time interval (BBI) differences produced by the heart and suggested as a marker of the autonomic nervous system. Artifact produced by movement... -
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- Influence of reconstruction parameters of micro-computed tomography on the analysis of bone mineral density
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Gaêta-Araujo H, Nascimento EHL, Brasil DM, Madlum DV, Haiter-Neto F, Oliveira-Santos C
- KMID: 2506012
- Imaging Sci Dent.
- 2020 Jun;50(2):153-159.
- doi: 10.5624/isd.2020.50.2.153
Purpose:This study was conducted evaluate the influence of reconstruction parameters of micro-computed tomography (micro-CT) images on bone mineral density (BMD) analyses. Materials and Methods:The sample consisted of micro-CT images of the... -
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- Influence of tooth position within the field of view on the intensity of cone-beam computed tomographic imaging artifacts when assessing teeth restored with various intracanal materials
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Pinto MGdO, Melo SLS, Cavalcanti YW, Lima EDd, Bento PM, Melo DPd
- KMID: 2506011
- Imaging Sci Dent.
- 2020 Jun;50(2):141-151.
- doi: 10.5624/isd.2020.50.2.141
Purpose:This study aimed to quantify the influence of tooth position within the field-of-view (FOV) on cone-beam computed tomography (CBCT) imaging artifacts' intensity when assessing teeth restored with various intracanal materials. Materials... -
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- Perceived Dark Rim Artifact in First-Pass Myocardial Perfusion Magnetic Resonance Imaging Due to Visual Illusion
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Shin T, Nayak KS
- KMID: 2471812
- Korean J Radiol.
- 2020 Apr;21(4):462-470.
- doi: 10.3348/kjr.2019.0449
OBJECTIVE: To demonstrate that human visual illusion can contribute to sub-endocardial dark rim artifact in contrast-enhanced myocardial perfusion magnetic resonance images. MATERIALS AND METHODS: Numerical phantoms were generated to simulate the... -
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- Does the metal artifact reduction algorithm activation mode influence the magnitude of artifacts in CBCT images?
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Fontenele , Nascimento EHL, Santaella , Freitas DQ
- KMID: 2471842
- Imaging Sci Dent.
- 2020 Mar;50(1):23-30.
- doi: 10.5624/isd.2020.50.1.23
PURPOSE: This study was conducted to assess the effectiveness of a metal artifact reduction (MAR) algorithm activated at different times during cone-beam computed tomography (CBCT) acquisition on the magnitude of... -
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- Magnitude of beam-hardening artifacts produced by gutta-percha and metal posts on cone-beam computed tomography with varying tube current
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Gaêta-Araujo H, Nascimento EHL, Fontenele , Mancini AX, Freitas DQ, Oliveira-Santos C
- KMID: 2471839
- Imaging Sci Dent.
- 2020 Mar;50(1):1-7.
- doi: 10.5624/isd.2020.50.1.1
PURPOSE: This study was performed to evaluate the magnitude of artifacts produced by gutta-percha and metal posts on cone-beam computed tomography (CBCT) scans obtained with different tube currents and with... -
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- Metallic Artifacts on MR Imaging and Methods for Their Reduction
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Choo HJ, Lee SJ, Lee YH
- KMID: 2469181
- J Korean Soc Radiol.
- 2020 Jan;81(1):41-57.
- doi: 10.3348/jksr.2020.81.1.41
Metallic artifacts on MR imaging are typically induced by differences in magnetic susceptibility between the metallic implant and surrounding tissue. Conventional techniques for metal artifact reduction require MR machines with... -
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- Parameters Affecting India Ink Artifacts on Opposed-Phase MR Images
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Kim BR, Ha DH
- KMID: 2468051
- Investig Magn Reson Imaging.
- 2019 Dec;23(4):341-350.
- doi: 10.13104/imri.2019.23.4.341
PURPOSE: To determine the MR parameters affecting India ink artifacts on opposed-phase chemical shift magnetic resonance (MR) imaging. MATERIALS AND METHODS: The use of a female Sprague-Dawley rat was approved by... -
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- The “Lip Sign†in MRI of the Spinal Cord
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Tarafdar S, Mohan A, Nagarajan
- KMID: 2459166
- Korean J Radiol.
- 2019 Oct;20(10):1474-1475.
- doi: 10.3348/kjr.2019.0486
No abstract available. -
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