| Validation of DynaCT in the morphological assessment of abdominal aortic aneurysm for endovascular repair. | |
| | |
MedLine Citation:
|
PMID: 20426634 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
PURPOSE: To evaluate the feasibility of intraoperative 3-dimensional rotational angiography (DynaCT) as a single tool to assess suitability for endovascular aneurysm repair (EVAR) and for sizing the stent-graft. METHODS: Twenty elective patients undergoing EVAR were prospectively recruited. All had preoperative multidetector computed tomography (CT) scans and intraoperative (pre-stent deployment) DynaCT scans. Images were read independently by 4 experienced endovascular practitioners. A total of 17 morphological variables, including aneurysm neck diameter and length, were measured from the CT and DynaCT images and compared. Bland-Altman plots examined intraclass correlation of continuous outcomes; kappa correlation coefficient assessed agreement of ordinal results. RESULTS: The mean DynaCT radiation dose was 3751+/-835 microGym(2). The mean difference between DynaCT and multidetector CT in aneurysm neck diameter measurement was -1.5 mm (95% CI -4.9 to 1.9). Differences in left and right common iliac artery diameters were -1.9 mm (95% CI -6.3 to 2.4) and -2.1 mm (95% CI -6.9 to 2.7), respectively. For presence of neck thrombus, the group kappa statistic was 0.51 (p<0.0001); for neck calcification, the kappa was 0.07 (p = 0.29). Nine (45%) cases had incomplete information on DynaCT because external iliac arteries were not included in the scan. CONCLUSION: DynaCT provides adequate preoperative imaging for morphological assessment of aortic anatomy. The greatest limitation is the evaluation of access vessels and underestimation of calcification. Due to current limited detector size, precise positioning is essential to attain all necessary sizing information using DynaCT. |
| | |
Authors:
|
Ian M Nordon; Robert J Hinchliffe; Amir H Malkawi; Jeremy Taylor; Peter J Holt; Robert Morgan; Ian M Loftus; Matt M Thompson |
Related Documents
:
|
2333824 - Saccular aneurysms of the thoracic aorta. 2349014 - Morphological diagnosis of congenital and acquired heart disease by magnetic resonance ... 17285264 - Comparison of different mri techniques for the assessment of thoracic aortic pathology:... 18292744 - Idiopathic retroperitoneal fibrosis in a patient suspected of impending rupture of the ... 10413344 - Correlation of mr images of disc injuries with anatomic sections in experimental thorac... 19783874 - Reference-based maximum upslope: a cbf quantification method without using arterial inp... |
Publication Detail:
|
Type: Journal Article; Validation Studies |
Journal Detail:
|
Title: Journal of endovascular therapy : an official journal of the International Society of Endovascular Specialists Volume: 17 ISSN: 1545-1550 ISO Abbreviation: J. Endovasc. Ther. Publication Date: 2010 Apr |
Date Detail:
|
Created Date: 2010-04-29 Completed Date: 2010-08-12 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100896915 Medline TA: J Endovasc Ther Country: United States |
Other Details:
|
Languages: eng Pagination: 183-9 Citation Subset: IM |
Affiliation:
|
St George's Vascular Institute, St George's Hospital, London, UK. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Aged Aged, 80 and over Angioplasty* Aortic Aneurysm, Abdominal / radiography*, therapy* Aortography / methods* Blood Vessel Prosthesis Implantation Cohort Studies Feasibility Studies Female Humans Imaging, Three-Dimensional* Male Monitoring, Intraoperative Observer Variation Predictive Value of Tests Reproducibility of Results Tomography, X-Ray Computed* |
| Comments/Corrections | |
Comment In:
|
J Endovasc Ther. 2010 Apr;17(2):190-1
[PMID:
20426635
]
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Cost-effectiveness analysis of endovascular versus open surgical repair of acute abdominal aortic an...
Next Document: Radiofrequency perforation system for in vivo antegrade fenestration of aortic stent-grafts.