An investigation of correlation between external surrogate signal and internal motion according to respiratory irregularity

Changhwan Kim; Jiwon Jang; Eunho Lee; Seyjoon Park; Soorim Han; Min Cheol Han; Chae-Seon Hong; Jin Sung Kim

doi:10.1117/12.3006361

3 April 2024 An investigation of correlation between external surrogate signal and internal motion according to respiratory irregularity

Changhwan Kim, Jiwon Jang, Eunho Lee, Seyjoon Park, Soorim Han, Min Cheol Han, Chae-Seon Hong, Jin Sung Kim

Author Affiliations +

Proceedings Volume 12925, Medical Imaging 2024: Physics of Medical Imaging; 1292526 (2024) https://doi.org/10.1117/12.3006361
Event: SPIE Medical Imaging, 2024, San Diego, California, United States

Abstract

Our study investigated the impact of irregular respiration on correlation between surrogate respiratory signal and internal organ motion in 4DCT. Based on the proposed quantitative index of respiratory irregularity, the study cases were divided into two: the case with regular breathing and the case with irregular breathing. By groups, internal organ movements were measured from 4CT images, and correlation between external surrogate signal and internal organ motion was analyzed. The results showed that the correlation with internal organ motion was obviously deteriorated in the case with irregular breathing, rather than the case with regular breathing. As observed that the irregular respiration may lead to such errors on gating interval up to 20% either phase or amplitude level, it would be necessary to employ the respiratory guidance and feedback system that can minimize the respiratory irregularity.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Changhwan Kim, Jiwon Jang, Eunho Lee, Seyjoon Park, Soorim Han, Min Cheol Han, Chae-Seon Hong, and Jin Sung Kim "An investigation of correlation between external surrogate signal and internal motion according to respiratory irregularity", Proc. SPIE 12925, Medical Imaging 2024: Physics of Medical Imaging, 1292526 (3 April 2024); https://doi.org/10.1117/12.3006361

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