Systematic approach towards reliable estimation of abdominal aortic aneurysm size by ultrasound imaging and CT
| Autor: | C A Meijer, Jaap F. Hamming, S.M. Tomee, D A Kies, J H N Lindeman, Jonathan Golledge, Martin N. J. M. Wasser, S. le Cessie |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Intraclass correlation
Interobserver reproducibility 030204 cardiovascular system & hematology 03 medical and health sciences 0302 clinical medicine Medicine Humans 030212 general & internal medicine Aorta Abdominal Ultrasonography Protocol (science) Observer Variation Clinical Trials as Topic business.industry Ultrasound Reproducibility of Results General Medicine Repeatability medicine.disease Abdominal aortic aneurysm Ultrasound imaging Original Article business Nuclear medicine AcademicSubjects/MED00010 Tomography X-Ray Computed Ct measurements Aortic Aneurysm Abdominal |
| Zdroj: | BJS Open BJS Open, 5(1). OXFORD UNIV PRESS |
| ISSN: | 2474-9842 |
| Popis: | Background The management of abdominal aortic aneurysm (AAA) is fully dictated by AAA size, but there are no uniform measurement guidelines, and systematic differences exist between ultrasound- and CT-based size estimation. The aim of this study was to devise a uniform ultrasound acquisition and measurement protocol, and to test whether harmonization of ultrasound and CT readings is feasible. Methods A literature review was undertaken to evaluate evidence for ultrasound-based measurement of AAA. A protocol for measuring AAA was then developed, and intraobserver and interobserver reproducibility was tested. Finally, agreement between ultrasound readings and CT-based AAA diameters was evaluated. This was an observational study of patients with a small AAA who participated in two pharmaceutical intervention trials. Results Based on a literature review, an ultrasound acquisition and reading protocol was devised. Evaluation of the protocol showed an intraobserver repeatability of 1.6 mm (2s.d.) and an interobserver intraclass correlation coefficient (ICC) of 0.97. Comparison of protocolled ultrasound readings and local CT readings indicated a good correlation (r = 0.81), but a systematic +4.1-mm difference for CT. Harmonized size readings for ultrasound imaging and CT increased the correlation (r = 0.91) and reduced the systematic difference to +1.8 mm by CT. Interobserver reproducibility of protocolized CT measurements showed an ICC of 0.94 for the inner-to-inner method and 0.96 for the outer-to-outer method. Conclusion The absence of harmonized size acquisition and reading guidelines results in overtreatment and undertreatment of patients with AAA. This can be avoided by the implementation of standardized ultrasound acquisition and a harmonized reading protocol for ultrasound- and CT-based readings. Absence of harmonized size acquisition and reading guidelines result in overtreatment and undertreatment of patients with an abdominal aortic aneurysm. This can be avoided by the implementation of standardized ultrasound acquisition and the proposed harmonized reading protocol for ultrasound- and CT-based readings. Reducing measurement errors |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|