Model-based registration for pneumothorax deformation analysis using intraoperative cone-beam CT images.
Annu Int Conf IEEE Eng Med Biol Soc
; 2020: 5818-5821, 2020 07.
Article
in En
| MEDLINE
| ID: mdl-33019297
ABSTRACT
Because the lung deforms during surgery because of pneumothorax, it is important to be able to track the location of a tumor. Deformation of the whole lung can be estimated using intraoperative cone-beam CT (CBCT) images. In this study, we used deformable mesh registration methods for paired CBCT images in the inflated and deflated states, and analyzed their deformation. We proposed a deformable mesh registration framework for deformations of partial organ shapes involving large deformation and rotation. Experimental results showed that the proposed methods reduced errors in point-to-point correspondence. As a result of registration using surgical clips placed on the lung surface during imaging, it was confirmed that an average error of 3.9 mm occurred in eight cases. The result of analysis showed that both tissue rotation and contraction had large effects on displacement.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pneumothorax
Limits:
Humans
Language:
En
Journal:
Annu Int Conf IEEE Eng Med Biol Soc
Year:
2020
Document type:
Article