- 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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- Determination and classification of intraoral phosphor storage plate artifacts and errors
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Deniz Y, Kaya S
- KMID: 2458371
- Imaging Sci Dent.
- 2019 Sep;49(3):219-228.
- doi: 10.5624/isd.2019.49.3.219
PURPOSE: The aim of this study was to determine the reasons and solutions for intraoral phosphor storage plate (PSP) image artifacts and errors, and to develop an appropriate classification of... -
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- U-net based metal segmentation on projection domain for metal artifact reduction in dental CT
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Hegazy MA, Cho MH, Cho MH, Lee SY
- KMID: 2470032
- Biomed Eng Lett.
- 2019 Aug;9(3):375-385.
- doi: 10.1007/s13534-019-00110-2
Unlike medical computed tomography (CT), dental CT often suffers from severe metal artifacts stemming from high-density materials employed for dental prostheses. Despite the many metal artifact reduction (MAR) methods available... -
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- Comet tail artifact on ultrasonography: is it a reliable finding of benign gallbladder diseases?
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Oh SH, Han HY, Kim HJ
- KMID: 2452548
- Ultrasonography.
- 2019 Jul;38(3):221-230.
- doi: 10.14366/usg.18029
PURPOSE: The aim of this study was to evaluate whether the comet tail artifact on ultrasonography can be used to reliably diagnose benign gallbladder diseases. METHODS: This retrospective study reviewed the... -
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- Cervical Spine CT Using Spectral Shaping: Can It Be a Solution to Overcome Artifacts in the Lower Cervical Spinal Region?
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Lee SM, Choo HJ, Lee SJ, Kim SK, Lee IS, Kim DW, Baek JW, Heo YJ
- KMID: 2438277
- Korean J Radiol.
- 2019 Mar;20(3):469-478.
- doi: 10.3348/kjr.2018.0517
OBJECTIVE: To investigate the image quality, radiation dose, and intermodality agreement of cervical spine CT using spectral shaping at 140 kVp by a tin filter (Sn140-kVp) in comparison with those... -
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- Image quality and artifacts in automated breast ultrasonography
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Kim SH
- KMID: 2433296
- Ultrasonography.
- 2019 Jan;38(1):83-91.
- doi: 10.14366/usg.18016
Three-dimensional automated breast ultrasonography (ABUS) has been approved for screening Epub ahead of print studies as an adjunct to mammography. ABUS provides proper orientation and documentation, resulting in better reproducibility.... -
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- Effect of object position in the field of view and application of a metal artifact reduction algorithm on the detection of vertical root fractures on cone-beam computed tomography scans: An in vitro study
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Nikbin A, Dalili Kajan Z, Taramsari , Khosravifard N
- KMID: 2450164
- Imaging Sci Dent.
- 2018 Dec;48(4):245-254.
- doi: 10.5624/isd.2018.48.4.245
PURPOSE: To assess the effects of object position in the field of view (FOV) and application of a metal artifact reduction (MAR) algorithm on the diagnostic accuracy of cone-beam computed... -
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- Susceptibility Weighted Imaging of the Cervical Spinal Cord with Compensation of Respiratory-Induced Artifact
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Lee H, Nam Y, Gho SM, Han D, Kim EY, Lee SW, Kim DH
- KMID: 2431105
- Investig Magn Reson Imaging.
- 2018 Dec;22(4):209-217.
- doi: 10.13104/imri.2018.22.4.209
PURPOSE: The objective of this study was to obtain improved susceptibility weighted images (SWI) of the cervical spinal cord using respiratory-induced artifact compensation. MATERIALS AND METHODS: The artifact from B0 fluctuations... -
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- Metal Artifact Reduction for Orthopedic Implants: Brain CT Angiography in Patients with Intracranial Metallic Implants
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Sunwoo L, Park SW, Rhim JH, Kang Y, Chung YS, Son YJ, Kim SC
- KMID: 2428951
- J Korean Med Sci.
- 2018 May;33(21):e158.
- doi: 10.3346/jkms.2018.33.e158
BACKGROUND: The purpose of this study was to qualitatively and quantitatively evaluate the effects of a metal artifact reduction for orthopedic implants (O-MAR) for brain computed tomographic angiography (CTA) in... -
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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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- Comparison of Metal Artifact Reduction for Orthopedic Implants versus Standard Filtered Back Projection: Value of Postoperative CT after Hip Replacement
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Rim J, Choi JA, Lee SA, Khil EK
- KMID: 2399302
- J Korean Soc Radiol.
- 2018 Jan;78(1):22-29.
- doi: 10.3348/jksr.2018.78.1.22
PURPOSE: To evaluate Metal Artifact Reduction for Orthopedic Implants (O-MAR, Philips Healthcare) technique compared with standard filtered back projection (SFBP) technique on post-operative hip CT regarding image noise reduction and... -
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- Novel tailoring algorithm for abrupt motion artifact removal in photoplethysmogram signals
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Pu L, Chacon PJ, Wu HC, Choi JW
- KMID: 2397930
- Biomed Eng Lett.
- 2017 Nov;7(4):299-304.
- doi: 10.1007/s13534-017-0037-0
Photoplethysmogram (PPG) signals are widely used for wearable electronic devices nowadays. The PPG signal is extremely sensitive to the motion artifacts (MAs) caused by the subject's movement. The detection and... -
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- Quantitative assessment of image artifacts from root filling materials on CBCT scans made using several exposure parameters
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Rabelo KA, Cavalcanti YW, de Oliveira Pinto MG, Sousa Melo SL, Campos PS, de Andrade Freitas Oliveira LS, de Melo DP
- KMID: 2390084
- Imaging Sci Dent.
- 2017 Sep;47(3):189-197.
- doi: 10.5624/isd.2017.47.3.189
PURPOSE: To quantify artifacts from different root filling materials in cone-beam computed tomography (CBCT) images acquired using different exposure parameters. MATERIALS AND METHODS: Fifteen single-rooted teeth were scanned using 8 different... -
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- A Case of Double Fovea Artifact Detected with Spectral-domain Optical Coherence Tomography
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Park HS, Jeong HK, Shin WB, Yang JY
- KMID: 2388192
- J Korean Ophthalmol Soc.
- 2017 Aug;58(8):1003-1007.
- doi: 10.3341/jkos.2017.58.8.1003
PURPOSE: In the present study, a case of double fovea artifact on spectral-domain optical coherence tomography (SD-OCT) was reported. CASE SUMMARY: A nine-year-old male presented with blurred vision of both eyes.... -
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- Limitations and artifacts in shear-wave elastography of the liver
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Bruce M, Kolokythas O, Ferraioli , Filice C, O'Donnell
- KMID: 2385971
- Biomed Eng Lett.
- 2017 May;7(2):81-89.
- doi: 10.1007/s13534-017-0028-1
Recent studies have shown that real-time, two-dimensional shear-wave elastography (2D-SWE) can monitor liver fibrosis by measuring tissue elasticity (i.e., elastic modulus). Two clinical studies of 2D-SWE in the liver have... -
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- Improvement of Fat Suppression and Artifact Reduction Using IDEAL Technique in Head and Neck MRI at 3T
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Hong JH, Lee HY, Kang YH, Lim MK, Kim YJ, Cho SG, Kim MY
- KMID: 2161369
- Investig Magn Reson Imaging.
- 2016 Mar;20(1):44-52.
- doi: 10.13104/imri.2016.20.1.44
PURPOSE: To quantitatively and qualitatively compare fat-suppressed MRI quality using iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) with that using frequency selective fat-suppression (FSFS)... -
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