Application of a computed tomography based cystic fibrosis scoring system to chest tomosynthesis

Christina Söderman; Åse Johnsson; Jenny Vikgren; Hans Rystedt; Jonas Ivarsson; Rauni Rossi Norrlund; Lena Nyberg Andersson; Magnus Båth

doi:10.1117/12.2006761

28 March 2013 Application of a computed tomography based cystic fibrosis scoring system to chest tomosynthesis

Christina Söderman, Åse Johnsson, Jenny Vikgren, Hans Rystedt, Jonas Ivarsson, Rauni Rossi Norrlund, Lena Nyberg Andersson, Magnus Båth

Author Affiliations +

Proceedings Volume 8673, Medical Imaging 2013: Image Perception, Observer Performance, and Technology Assessment; 86731H (2013) https://doi.org/10.1117/12.2006761
Event: SPIE Medical Imaging, 2013, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

In the monitoring of progression of lung disease in patients with cystic fibrosis (CF), recurrent computed tomography (CT) examinations are often used. The relatively new imaging technique chest tomosynthesis (CTS) may be an interesting alternative in the follow-up of these patients due to its visualization of the chest in slices at radiation doses and costs significantly lower than is the case with CT. A first step towards introducing CTS imaging in the diagnostics of CF patients is to establish a scoring system appropriate for evaluating the severity of CF pulmonary disease based on findings in CTS images. Previously, several such CF scoring systems based on CT imaging have been published. The purpose of the present study was to develop a CF scoring system for CTS, by starting from an existing scoring system dedicated for CT images and making modifications regarded necessary to make it appropriate for use with CTS images. In order to determine any necessary changes, three thoracic radiologists independently used a scoring system dedicated for CT on both CT and CTS images from CF patients. The results of the scoring were jointly evaluated by all the observers, which lead to suggestions for changes to the scoring system. Suggested modifications include excluding the scoring of air trapping and doing the scoring of the findings in quadrants of the image instead of in each lung lobe.

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Christina Söderman, Åse Johnsson, Jenny Vikgren, Hans Rystedt, Jonas Ivarsson, Rauni Rossi Norrlund, Lena Nyberg Andersson, and Magnus Båth "Application of a computed tomography based cystic fibrosis scoring system to chest tomosynthesis", Proc. SPIE 8673, Medical Imaging 2013: Image Perception, Observer Performance, and Technology Assessment, 86731H (28 March 2013); https://doi.org/10.1117/12.2006761

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