Tokihiro Yamamoto

Lung ventilation estimation based on 4D-CT imaging
Kabus S, von Berg J, Yamamoto T, Opfer R, Keall P J. Proc. of the First International Workshop on Pulmonary Image Analysis, MICCAI. 2008: 73-81
Abstract. The estimation of lung ventilation would allow to prevent high functional lung regions from radiation injuries during radiation therapy of lung cancer. As 4D-CT images are a standard procedure for radiation therapy planning, the usage of these images for the additional lung ventilation estimation would be advantageous over other imaging methods specifically performed for ventilation estimation only. This would require both a registration of images of different respiratory phases yielding deformation vector fields and a suitable metric of ventilation estimation based on the deformation vector fields. We apply two different image registration methods and two different metrics to a set of 4D-CT images and compare them with each other and with a global reference measure based on independent lung volume measures from image segmentation. (http://www.lungworkshop.org/2009/proc2008/8-kabus.pdf)