[PDF] Top 20 Artifact Reduction of Different Metallic Implants in Flat Detector C Arm CT

... The patients in our study did not undergo FDCT before the operation. Therefore, we chose the brain parenchyma in a higher or lower section, which was free of metallic artifacts, as the inter- nal reference of ... See full document

... The standard technique for follow-up imaging after (stent- assisted) coil embolization of intracranial aneurysms is DSA, which only provides a 2D projection of the vascular anatomy and implants. Diagnostic ... See full document

... various metallic objects causing streak artifacts and the application of the MAR ...spine. C and G, A vascular clip used to treat an intracranial ... See full document

... calibrated detector elements as well as by the damaged scintillator crystals of the flat panel ...in different projection direction. Ring artifact reduction techniques so far reported ... See full document

... of metallic restorations in forms of den- tal implants, fillings, crowns, screws, nails, prosthesis and plates in dentistry, and the increasing popularity of CBCT in image-guided therapy, dental CT ... See full document

... silicon flat panel detectors covering an area of approxi- mately 30 ⫻ 40 cm (Artis zee floor; ...frontal C-arm, typically used for 3D rotational angiography or soft-tissue-optimized ... See full document

... acquired during diagnostic catheter angiography, and intravenous FDCTA was acquired during follow-up examinations. A 5 s rotational angiography protocol with intraarterial application of contrast agent, a 10 s or a 20 s ... See full document

... the artifact reduction can effectively eliminate the artifacts generated by metal fixtures, implants, metal clips, and spring coils implanted in different parts of the body and can also ... See full document

... these metallic implants have much higher attenuation coefficients than bones or soft ...the detector. In this situ- ation, if the X-ray detector lacks a sufficient dynamic range in detecting ... See full document

... of metallic im- plants, artifacts caused by the metal often obscure image de- tails and may prevent a proper diagnosis of areas of ...the implants in every studied ...This reduction not only achieved ... See full document

... Presently, no statistically significant difference in estimation of stenosis length was observed in higher stenosis grades (Spear- man rank correlation test; r ⫽ ⫺ 0.12, P ⫽ .13), but length dis- crepancy was more ... See full document

... high-resolution C- arm CT with diluted contrast agents, our study focused on high-re- solution C-arm CT without the use of any contrast ...resolution C-arm ... See full document

... Based on the forward sinogram inpainting MAR framework, in this paper we propose a Gaussian diffusion sinogram inpainting technique based on a prior image to reduce metal artifacts in a Bayesian framework. In this work, ... See full document

... because CT scan- ner image reconstruction systems are much more powerful than the off-line ...Our CT system can reconstruct images by using sino- gram-affirmed iterative reconstruction, another ... See full document

... Alternatively, the radiation dose due to the C-arm CT acqui- sition can be reduced with collimation. Because the physician’s focus is on the device and its relationship to the parent artery, the ... See full document

... Besides the difference in ASPECTS between both modalities caused by the delay between MDCT and FDCT, increased sensi- tivity and specificity for FDCT ASPECTS could have been ex- pected with a higher number of patients ... See full document

... Disclosures: Aditi A. Desai—RELATED: Grant: National Institutes of Health,* Com- ments: The study was funded by a National Institutes of Health grant. Megan K. Strother—RELATED: Grant: National Institutes of ... See full document

... single, flat-plate radiographs involving creative positioning of the patient (eg, Schu¨ller and Stenver projec- tion) to the development of the multisection spiral CT tech- nique, which minimizes ... See full document

... dental implants and had no information of their exact ...of different materials on the artifacts in the applied sequences could not be ad- ...of artifact re- ...of different artifact ... See full document

... of metallic dental devices than those of biologi- cal tissues and teeth, metallic devices make high contrast in every projection image acquired by a 3D dental ...successful reduction of metal ...of ... See full document