Iterative reconstruction improves evaluation of native aortic and mitral valves by retrospectively ECG-gated thoracoabdominal CTA.
Objectives: To compare native aortic (AV) and mitral valve (MV) image quality on limited-dose retrospectively ECG-gated CTA of the thoracoabdominal aorta reconstructed with iterative reconstruction (IR) and filtered back projection (FBP).Methods: Fifty patients underwent routine care retrospectively...
| Publicado en: | European Radiology Vol. 23; no. 4; pp. 968 - 975 |
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| Autores principales: | , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Apr2013
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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=104252340&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104252340 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Apr2013 vid: 23 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104252340 NLM23064676 2012048148 10.1007/s00330-012-2673-1 NLM23064676 104252340 ppf: 968 ppct: 7 formats: fmt: @attributes: type: P tig: atl: Iterative reconstruction improves evaluation of native aortic and mitral valves by retrospectively ECG-gated thoracoabdominal CTA. aug: au: Willemink, Martin J Habets, Jesse de Jong, Pim A Schilham, Arnold M R Mali, Willem P Th M Leiner, Tim Budde, Ricardo P J affil: Department of Radiology, Utrecht University Medical Center, P.O. Box 85500, E01.132, 3508 GA, Utrecht, The Netherlands, m.willemink@umcutrecht.nl. sug: subj: Aortic Valve Radiography Cardiac-Gated Imaging Techniques Methods Coronary Angiography Methods Mitral Valve Radiography Radiographic Image Enhancement Methods Tomography, X-Ray Computed Methods Aged Female Human Male Radiography, Abdominal Methods Radiography, Thoracic Methods Reproducibility of Results Retrospective Design Sensitivity and Specificity Aged: 65+ years Female Male ab: Objectives: To compare native aortic (AV) and mitral valve (MV) image quality on limited-dose retrospectively ECG-gated CTA of the thoracoabdominal aorta reconstructed with iterative reconstruction (IR) and filtered back projection (FBP).Methods: Fifty patients underwent routine care retrospectively ECG-gated thoracoabdominal limited-dose 256-slice CTA. At 30 % (systole) and 75 % (diastole) of the R-R interval AV and MV were reconstructed using FBP and IR. Objective image quality [density and noise (SD of density measurement)] was measured. Two independent observers scored subjective valve image quality using four-point Likert scales.Results: IR significantly decreased image noise, but did not alter the aorta and interventricular septum density. Interobserver variability was moderate to good. Valve image quality was scored at least moderate in most cases. IR scored one or two Likert scale points higher than FBP in 10 (first observer) and 27 (second observer) scores. Conversely, IR scored one Likert scale point lower than FBP in 1 (first observer) and 4 (second observer) scores.Conclusions: Limited-dose retrospectively ECG-gated thoracoabdominal CTA enables moderate to excellent evaluation of AV and MV in most patients, in addition to the primary diagnostic question. Image quality is further improved by IR. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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