Impact of a new metal artefact reduction algorithm in the noninvasive follow-up of intracranial clips, coils, and stents with flat-panel angiographic CTA: initial results
| العنوان: | Impact of a new metal artefact reduction algorithm in the noninvasive follow-up of intracranial clips, coils, and stents with flat-panel angiographic CTA: initial results |
|---|---|
| المؤلفون: | Michael Knauth, Christopher Rohkohl, Bernhard Scholz, Yiannis Kyriakou, Katrin Wasser, Alexander Mohr, Dorothee Wachter, Peter Schramm, Marios-Nikos Psychogios |
| المصدر: | Neuroradiology. 55:813-818 |
| بيانات النشر: | Springer Science and Business Media LLC, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Cone beam computed tomography, Mechanical Thrombolysis, medicine.medical_treatment, Metal artefact, Sensitivity and Specificity, Humans, Medicine, Radiology, Nuclear Medicine and imaging, cardiovascular diseases, CLIPS, Reduction (orthopedic surgery), Aged, Retrospective Studies, Neuroradiology, computer.programming_language, business.industry, Reproducibility of Results, Intracranial Aneurysm, Clipping (medicine), Middle Aged, medicine.disease, Blood Vessel Prosthesis, Cerebral Angiography, Radiographic Image Enhancement, Stenosis, Treatment Outcome, Metals, Radiographic Image Interpretation, Computer-Assisted, Female, Stents, Neurology (clinical), Radiology, Neurosurgery, Artifacts, Tomography, X-Ray Computed, Cardiology and Cardiovascular Medicine, business, Algorithm, computer, Algorithms, Follow-Up Studies |
| الوصف: | Flat-panel angiographic CT after intravenous contrast agent application (ivACT) is increasingly used as a follow-up examination after coiling, clipping, or stenting. The purpose of this study was to evaluate the feasibility of a new metal artefact reduction algorithm (MARA) in patients treated for intracranial aneurysms and stenosis.IvACT was performed on a flat-panel detector angiography system after intravenous application of 80 ml contrast media. The uncorrected raw images were transferred to a prototype reconstruction workstation where the MARA was applied. Two experienced neuroradiologists examined the corrected and uncorrected images on a commercially available workstation.Artefacts around the implants were detected in all 16 uncorrected cases, while eight cases showed remaining artefacts after correction with the MARA. In the cases without correction, there were 11 cases with "extensive" artefacts and five cases with "many" artefacts. After correction, seven cases showed "few" and only one case "many" artefacts (Wilcoxon test, P0.001). Parent vessels were characterized as "not identifiable" in 62% of uncorrected images, while the delineation of parent vessels were classified as "excellent" in 50% of the cases after correction (Wilcoxon test, P = 0.001).Use of the MARA in our study significantly reduced artefacts around metallic implants on ivACT images and allowed for the delineation of surrounding structures. |
| تدمد: | 1432-1920 0028-3940 |
| DOI: | 10.1007/s00234-013-1165-6 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90e55bdd5136211f97e17e9a6cf33c44 https://doi.org/10.1007/s00234-013-1165-6 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....90e55bdd5136211f97e17e9a6cf33c44 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14321920 00283940 |
|---|---|
| DOI: | 10.1007/s00234-013-1165-6 |