Susceptibility Artifacts
Imaging characteristics of metallic interbody spacers: in vitro score evaluation of susceptibility artifacts considering different MRI sequences
... Implant-related susceptibility ar- tifacts can decrease the quality of MRI scans, thwar- ting proper ...the susceptibility artifacts produced by the metallic spacers showed a high degree of ...
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Temporal Evolution of Susceptibility Artifacts from Coiled Aneurysms on MR Angiography: An In Vivo Canine Study
... Twelve canine aneurysms were embolized, and the average packing attenuation was 22.6 ⫾ 7.7%. Four aneurysms were excluded due to complete or partial aneurysmal thrombosis prior to coil embolization. Representative MR ...
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Magnetic susceptibility artifacts on high resolution MR of the temporal bone
... other artifacts observed in MR, the presence or absence of artifacts actually may be used to provide diagnostic ...described susceptibility artifacts were observed in all studies of healthy ...
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Magnetic susceptibility artifacts in gradient recalled echo MR imaging
... When axial GRE techniques were used, there was greater spatial distortion and signal loss adjacent to the bone fragments and test tube margins with increasing echo delay times caused by [r] ...
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Sellar susceptibility artifacts: theory and implications
... A , T 2-weighted 2800/80 coro nal image of the pituitary gland shows an area of focal high signal arrow near the sellar floor near the junction wit h the sphenoidal septum.. parallel or [r] ...
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Effects of magnetic susceptibility artifacts and motion in evaluating the cervical neural foramina on 3DFT gradient echo MR imaging
... The purpose of this study was to evaluate in vitro the effects of magnetic susceptibility and motion on the estimation of neural foramina I diameter with three-dimensional Fourier transf[r] ...
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Evaluation of a Signal Intensity Mask in the Interpretation of Functional MR Imaging Activation Maps
... of susceptibility artifacts on functional MR imaging (fMRI) studies and their effect on fMRI ...which susceptibility artifacts affected eloquent brain ...a susceptibility artifact in ...
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Score based assessment of implant related post fusion MRI artifacts focused on different interbody disc spacers: An in vitro study
... implant-related susceptibility artifacts can nega- tively impact the complex post-fusion evaluation of MRI ...varying susceptibility results in the area between ...and susceptibility ...
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The Effect of Prior Surgery on Blood Oxygen Level–Dependent Functional MR Imaging in the Preoperative Assessment of Brain Tumors
... A 3T scanner offers a clear advantage in BOLD fMRI signal intensity over a 1.5T scanner. The phys- ical properties that lead to an improved BOLD fMRI signal intensity on a 3T scanner, however, also lead to an increase in ...
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MR artifacts, heat production, and ferromagnetism of Guglielmi detachable coils
... magnetic susceptibility artifacts, the coils were placed in a capped plastic vial containing saline solution and imaged with conventional spin-echo T1- weighted (500/16/2), fast spin-echo proton density– ...
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IJCSMC, Vol. 2, Issue. 12, December 2013, pg.350 – 358 RESEARCH ARTICLE The Study of Various Approaches for Removal of Blocking Artifacts in Spatial Domain
... Image Quality assessment plays an important role in Image processing applications as; it can be used to monitor image quality for quality control systems. Also, it can be used to benchmark image processing systems and ...
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A Post Processing Approach For Ringing-Artifact Reduction
... Ringing artifacts can be reduced by applying bell-shaped filters in the DCT domain, such as a cosine filter, an exponential filter, and a Vandeven filter [5], ...ringing artifacts without blurring of the ...
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Efficient single image dehazing by modifying the dark channel prior
... This paper introduces an innovative method which used a variant of the dark channel that greatly reduces the recurrent artifacts presented when using the classic dark channel. Analyzing the experimental results of ...
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... The degrading effect of high rainfall events on DSTV reception is not only evident on the visual component of the signal (in terms of artifacts displayed and total loss) but also on the audio component of the ...
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Effect of Dental Implant Metal Artifacts on Accuracy of Linear Measurements by Two Cone-beam Computed Tomography Systems Before and After Crown Restoration
... metal artifacts, a higher image quality was observed with NewTom VG than with Planmeca CBCT ...metal artifacts on the accuracy of CBCT images was evaluated ...
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Detection of Sophisticated Network Enabled Threats via a Novel Micro Proxy Architecture
... The basic principle underpinning the micro proxy conceptual architecture is to assume that all input are mali- cious unless proved otherwise, in effect to implement a default deny policy at the application level. In ...
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orensic Archaeometry Applied to Antiquities
... international disputes over the recovery of artifacts illegally exported to other countries. Looting and Illicit Trafficking in Archaeological Artifacts: A Few Notes 168.. The forcible [r] ...
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Carotid Artery Stents: In Vitro Comparison of Different Stent Designs and Sizes Using CT Angiography and Contrast Enhanced MR Angiography at 1 5T and 3T
... found the image quality of medium and sharp image kernels on CTA to be good to fair, whereas a smooth kernel provided only acceptable-to-poor image quality; we used medium image ker- nels (H 40 f), as routinely used on ...
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DESIGN OF EFFICIENT CACHING ALGORITHMS FOR PEER TO PEER NETWORKS TO REDUCE TRAFFIC IN INTERNET
... different artifacts in images as mentioned ...of artifacts in ...based artifacts removal algorithm is to remove all the artifacts simultaneously with preserving ...different artifacts ...
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Evaluation of a Metal Artifacts Reduction Algorithm Applied to Postinterventional Flat Panel Detector CT Imaging
... streak artifacts were noted on the acquired FDCT images of the phantom aneurysm model (Fig 2B, ...The artifacts were caused by the metal alloys contained within the stent and coils, and the artifacts ...
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