Follow-up CT and CT angiography after intracranial aneurysm clipping and coiling-improved image quality by iterative metal artifact reduction.
Purpose: This paper aims to evaluate a new iterative metal artifact reduction algorithm for post-interventional evaluation of brain tissue and intracranial arteries. Methods: The data of 20 patients that underwent follow-up cranial CT and cranial CT angiography after clipping or coiling of an intrac...
| Publicado en: | Neuroradiology Vol. 59; no. 7; pp. 649 - 655 |
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| Autores principales: | , , , , , , |
| Formato: | diagnostic images research tables/charts Journal Article |
| Publicado: |
Springer Nature
Jul2017
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=123905141&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 123905141 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00283940 NYZ jtl: Neuroradiology issn: 00283940 maglogo: N pubinfo: dt: Jul2017 vid: 59 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 123905141 123905141 143970296 123905141 10.1007/s00234-017-1855-6 123905141 ppf: 649 ppct: 6 formats: fmt: @attributes: type: P tig: atl: Follow-up CT and CT angiography after intracranial aneurysm clipping and coiling-improved image quality by iterative metal artifact reduction. aug: au: Bier, Georg Bongers, Malte Hempel, Johann-Martin Örgel, Anja Hauser, Till-Karsten Ernemann, Ulrike Hennersdorf, Florian affil: Department of Diagnostic and Interventional Neuroradiology , Eberhard Karls University Tuebingen , 72076 Tuebingen Germany sug: subj: Angiography, Digital Subtraction Cerebral Aneurysm Summated Rating Scaling Algorithms Evaluation Artifacts Wilcoxon Signed Rank Test Kruskal-Wallis Test Study Design Retrospective Design Data Analysis Scales Confidence Intervals ab: Purpose: This paper aims to evaluate a new iterative metal artifact reduction algorithm for post-interventional evaluation of brain tissue and intracranial arteries. Methods: The data of 20 patients that underwent follow-up cranial CT and cranial CT angiography after clipping or coiling of an intracranial aneurysm was retrospectively analyzed. After the images were processed using a novel iterative metal artifact reduction algorithm, images with and without metal artifact reduction were qualitatively evaluated by two readers, using a five-point Likert scale. Moreover, artifact strength was quantitatively assessed in terms of CT attenuation and standard deviation alterations. Results: The qualitative analysis yielded a significant increase in image quality ( p = 0.0057) in iteratively processed images with substantial inter-observer agreement ( ĸ = 0.72), while the CTA image quality did not differ ( p = 0.864) and even showed vessel contrast reduction in six cases (30%). The mean relative attenuation difference was 27% without metal artifact reduction vs. 11% for iterative metal artifact reduction images ( p = 0.0003). Conclusions: The new iterative metal artifact reduction algorithm enhances non-enhanced CT image quality after clipping or coiling, but in CT-angiography images, the contrast of adjacent vessels can be compromised. pubtype: Academic Journal doctype: diagnostic images research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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