Impact of contrast injection and stent-graft implantation on reproducibility of volume measurements in semiautomated segmentation of abdominal aortic aneurysm on computed tomography.
Purpose: To assess the impact of contrast injection and stent-graft implantation on feasibility, accuracy, and reproducibility of abdominal aortic aneurysm (AAA) volume and maximal diameter (D-max) measurements using segmentation software.Materials and Methods: CT images of 80 subjects presenting AA...
| Publicado en: | European Radiology Vol. 24; no. 7; pp. 1594 - 1602 |
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| Autores principales: | , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Jul2014
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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=103827366&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 103827366 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09387994 NPH jtl: European Radiology issn: 09387994 maglogo: N pubinfo: dt: Jul2014 vid: 24 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 103827366 NLM24801978 2012607288 10.1007/s00330-014-3175-0 NLM24801978 103827366 ppf: 1594 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Impact of contrast injection and stent-graft implantation on reproducibility of volume measurements in semiautomated segmentation of abdominal aortic aneurysm on computed tomography. aug: au: Morin-Roy, Florence Kauffmann, Claude Tang, An Hadjadj, Sofiane Thomas, Olivier Piché, Nicolas Elkouri, Stéphane Yang, Dan Yang Therasse, Eric Soulez, Gilles Therasse, Éric affil: Department of Radiology, Centre Hospitalier Universitaire de Montréal (CHUM), Hôpital Notre-Dame, 1560 Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1, florencemorinroy@gmail.com. sug: subj: Aortic Aneurysm, Abdominal Radiography Angiography Methods Blood Vessel Prosthesis Contrast Media Administration and Dosage Multidetector Computed Tomography Methods Stents Aged Aged, 80 and Over Aortic Aneurysm, Abdominal Surgery Contrast Media Diagnostic Use Cross Sectional Studies Pilot Studies Female Prospective Studies Human Image Processing, Computer Assisted Male Middle Age ROC Curve Reproducibility of Results Retrospective Design Aged: 65+ years Aged, 80 & over Middle Aged: 45-64 years Female Male ab: Purpose: To assess the impact of contrast injection and stent-graft implantation on feasibility, accuracy, and reproducibility of abdominal aortic aneurysm (AAA) volume and maximal diameter (D-max) measurements using segmentation software.Materials and Methods: CT images of 80 subjects presenting AAA were divided into four equal groups: with or without contrast enhancement, and with or without stent-graft implantation. Semiautomated software was used to segment the aortic wall, once by an expert and twice by three readers. Volume and D-max reproducibility was estimated by intraclass correlation coefficients (ICC), and accuracy was estimated between the expert and the readers by mean relative errors.Results: All segmentations were technically successful. The mean AAA volume was 167.0 ± 82.8 mL and the mean D-max 55.0 ± 10.6 mm. Inter- and intraobserver ICCs for volume and D-max measurements were greater than 0.99. Mean relative errors between readers varied between -1.8 ± 4.6 and 0.0 ± 3.6 mL. Mean relative errors in volume and D-max measurements between readers showed no significant difference between the four groups (P ≥ 0.2).Conclusion: The feasibility, accuracy, and reproducibility of AAA volume and D-max measurements using segmentation software were not affected by the absence of contrast injection or the presence of stent-graft.Key Points: • AAA volumetry by semiautomated segmentation is accurate on CT following endovascular repair. • AAA volumetry by semiautomated segmentation is accurate on unenhanced CT. • Standardization of the segmentation technique maximizes the reproducibility of volume measurements. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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