Repository logo
Log In
  1. Home
  2. Unibas
  3. Publications
  4. Inter-fractional Respiratory Motion Modelling from Abdominal Ultrasound: A Feasibility Study
 
  • Details

Inter-fractional Respiratory Motion Modelling from Abdominal Ultrasound: A Feasibility Study

Date Issued
2019-01-01
Author(s)
Giger, Alina  
Jud, Christoph  
Nguyen, Damien  
Krieger, Miriam
Zhang, Ye
Lomax, Antony J.
Bieri, Oliver  
Salomir, Rares
Cattin, Philippe C.  
DOI
10.1007/978-3-030-32281-6_2
Abstract
Motion management strategies are crucial for radiotherapy of mobile tumours in order to ensure proper target coverage, save organs at risk and prevent interplay effects. We present a feasibility study for an inter-fractional, patient-specific motion model targeted at active beam scanning proton therapy. The model is designed to predict dense lung motion information from 2D abdominal ultrasound images. In a pretreatment phase, simultaneous ultrasound and magnetic resonance imaging are used to build a regression model. During dose delivery, abdominal ultrasound imaging serves as a surrogate for lung motion prediction. We investigated the performance of the motion model on five volunteer datasets. In two cases, the ultrasound probe was replaced after the volunteer has stood up between two imaging sessions. The overall mean prediction error is 2.9 mm and 3.4 mm after repositioning and therefore within a clinically acceptable range. These results suggest that the ultrasound-based regression model is a promising approach for inter-fractional motion management in radiotherapy.
File(s)
Loading...
Thumbnail Image
Name

20210112202559_5ffdf7c718958.pdf

Size

2.48 MB

Format

Adobe PDF

Checksum

(MD5):279e6eafb7b4ef6127d7e2b650bfd580

University of Basel

edoc
Open Access Repository University of Basel

  • About edoc
  • About Open Access at the University of Basel
  • edoc Policy

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Privacy policy
  • End User Agreement