Vessel size estimation in peripheral artery interventions: Are angiographic measurements reliable?
2005 (English)In: Acta Radiologica, ISSN 0284-1851, E-ISSN 1600-0455, Vol. 46, no 2, 163-169 p.Article in journal (Refereed) Published
Purpose: To describe and evaluate a new technique for angiographic measurement of arterial diameters and to make a comparison with other common techniques. Material and Methods: The Angiometer has a radiopaque metal body with six cylindrical segments of varying diameter. Arterial diameter is estimated by visually relating the vessel to these segments. The measurements (method A) were compared: to measuring in relation to a ruler on the table-top by means of compasses (B), to an automated measurement technique (quantitative angiography) utilizing calibration to a catheter of known diameter (C), and to a computer-based distance measurement using the ruler on the table-top as reference (D). Twenty-five patients were studied. Each method was used twice by each of two independent observers. A phantom with four drilled holes, filled with contrast agent, was also studied. Results: The coefficient of variation was highest for method C and lowest for method A. Correlations between readings were highest for method A and lowest for method C. Mean diameter values were highest for method A and lowest for methods B and D. In the phantom experiments, sizes were overestimated by between 5% and 9% with method A, and underestimated by between 4% and 27% with the other methods. Conclusion: In terms of reproducibility and accuracy, the proposed method compares favorably with alternative methods.
Place, publisher, year, edition, pages
2005. Vol. 46, no 2, 163-169 p.
angioplasty, diameter, digital, quantitative angiography, visual
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-30232DOI: 10.1080/02841850510015992Local ID: 15736OAI: oai:DiVA.org:liu-30232DiVA: diva2:251054