Description and validation of a scoring system for tomosynthesis in pulmonary cystic fibrosis.Vult von Steyern, Kristina; Björkman-Burtscher, Isabella; Höglund, Peter; Bozovic, Gracijela; Wiklund, Marie; Geijer, Mats Vult von Steyern, K., Björkman-Burtscher, I., Höglund, P., Bozovic, G., Wiklund, M., & Geijer, M. (2012). Description and validation of a scoring system for tomosynthesis in pulmonary cystic fibrosis. European Radiology, 22(12), 2718Radiology, 22(12), -2728Radiology, 22(12), . https://doi.org/10.1007Radiology, 22(12), /s00330-012-2534 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal Take down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
ABSTRACTObjectives: To design and validate a scoring system for tomosynthesis (digital tomography) in pulmonary cystic fibrosis.
Methods:A scoring system dedicated to tomosynthesis in pulmonary cystic fibrosis was designed. Three radiologists independently scored 88 pairs of radiographs and tomosynthesis examinations of the chest in 60 patients with cystic fibrosis and 7 oncology patients.Radiographs were scored according to the Brasfield scoring system and tomosynthesis examinations were scored using the new scoring system.
Results:Observer agreements for the tomosynthesis score were almost perfect for the total score with square-weighted kappa >0.90, and generally substantial to almost perfect for subscores. Correlation between the tomosynthesis score and the Brasfield score was good for the three observers (Kendall's rank correlation tau 0.68, 0.77 and 0.78). Tomosynthesis was generally scored higher as a percentage of the maximum score. Observer agreements for the total score for Brasfield score were almost perfect (square-weighted kappa 0.80, 0.81 and 0.85).
Conclusions:The tomosynthesis scoring system seems robust and correlates well with the Brasfield score. Compared with radiography, tomosynthesis is more sensitive to cystic fibrosis changes, especially bronchiectasis and mucus plugging, and the new tomosynthesis scoring system offers the possibility of more detailed and accurate scoring of disease severity.