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Time-varying lung ventilation analysis of 4DCT using image registration

Kai Ding, Kaifang Du, Kunlin Cao, Gary E. Christensen, Joseph M. Reinhardt
2011 2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)  
In this paper, we present a new instantaneous ventilation measurement scheme using multiple 4DCT phase images and regularized 3D image registration, which aims at measuring the regional ventilation within  ...  Most of the existing CT and image registration based ventilation measurement methods use two extreme phases (end expiration and end inspiration) while ignoring the important ventilation variation within  ...  Time-Varying Regional Ventilation Analysis from Image Registration After we obtain the optimal warping function, we can calculate the regional ventilation (V ), which is equal to the difference in local  ... 
doi:10.1109/icassp.2011.5947672 dblp:conf/icassp/DingDCCR11 fatcat:ydt6bfjszvg7voqadeqaioxyuu

Use of 4-Dimensional Computed Tomography-Based Ventilation Imaging to Correlate Lung Dose and Function With Clinical Outcomes

Yevgeniy Vinogradskiy, Richard Castillo, Edward Castillo, Susan L. Tucker, Zhongxing Liao, Thomas Guerrero, Mary K. Martel
2013 International Journal of Radiation Oncology, Biology, Physics  
Ventilation images were calculated using 4DCT data, deformable image registration, and a density-change based algorithm.  ...  Methods and Materials-Pretreatment 4DCT data were used to compute pretreatment ventilation images for 96 lung cancer patients.  ...  Vinogradskiy et al (6) evaluated changes in lung function throughout the course of treatment using 4DCT-based ventilation, whereas Yamamoto et al (7) used 4DCT-ventilation to investigate lung function  ... 
doi:10.1016/j.ijrobp.2013.01.004 pmid:23474113 pmcid:PMC3875308 fatcat:b3h7lkpphfhvvec7lfwinte2z4

Respiratory effort correction strategies to improve the reproducibility of lung expansion measurements

Kaifang Du, Joseph M. Reinhardt, Gary E. Christensen, Kai Ding, John E. Bayouth
2013 Medical Physics (Lancaster)  
Methods: Repeat 4DCT image data acquired within a short time interval from 24 patients prior to radiation therapy (RT) were used for this analysis.  ...  Using a tissue volume preserving deformable image registration algorithm, Jacobian ventilation maps in two scanning sessions were computed and compared on the same coordinate for reproducibility analysis  ...  The lung segmentation was used to limit the spatial domain of image registration, subsequent ventilation calculation, and statistics analysis.  ... 
doi:10.1118/1.4829519 pmid:24320544 pmcid:PMC3843762 fatcat:ah5k7qxskfgvjjzwqdzo4u6boi

Measurement of regional compliance using 4DCT images for assessment of radiation treatment

Hualiang Zhong, Jian-yue Jin, Munther Ajlouni, Benjamin Movsas, Indrin J. Chetty
2011 Medical Physics (Lancaster)  
Image registrations were performed on each of the 4DCT images using a multiresolution Demons algorithm. The images at the end of exhalation were selected as a reference.  ...  Conclusions: A 4DCT-based mechanical model has been developed to calculate the ventilation and stress images of the lung.  ...  Image preprocessing and deformable registration Six 4DCT images acquired from lung cancer patients were used in this study.  ... 
doi:10.1118/1.3555299 pmid:21520868 pmcid:PMC3060935 fatcat:6ayarc56rjcvtoluwv4wsir43e

The VAMPIRE challenge: A multi-institutional validation study of CT ventilation imaging

John Kipritidis, Bilal A. Tahir, Guillaume Cazoulat, Michael S. Hofman, Shankar Siva, Jason Callahan, Nicholas Hardcastle, Tokihiro Yamamoto, Gary E. Christensen, Joseph M. Reinhardt, Noriyuki Kadoya, Taylor J. Patton (+16 others)
2019 Medical Physics (Lancaster)  
The VAMPIRE Dataset includes 50 pairs of 4DCT scans and corresponding clinical or experimental ventilation scans, referred to as reference ventilation images (RefVIs).  ...  CT ventilation imaging (CTVI) is being used to achieve functional avoidance lung cancer radiation therapy in three clinical trials (NCT02528942, NCT02308709, NCT02843568).  ...  In order to link each SPECT/CT with the time-averaged 4DCT, a rigid registration was performed between each attenuation correction CT and the 4DCT time average using a Mattes mutual information rigid registration  ... 
doi:10.1002/mp.13346 pmid:30575051 pmcid:PMC6605778 fatcat:vysgbn6hezemxcy32zl27mxydm

Reproducibility of registration-based measures of lung tissue expansion

Kaifang Du, John E. Bayouth, Kunlin Cao, Gary E. Christensen, Kai Ding, Joseph M. Reinhardt
2012 Medical Physics (Lancaster)  
Methods: 4DCT image data from three white sheep and nine human subjects were used for this analysis. In each case, two 4DCT studies were acquired for each subject within a short time interval.  ...  Respiratory-gated CT imaging and 3D image registration can be used to locally estimate lung tissue expansion and contraction (regional lung volume change) by computing the determinant of the Jacobian matrix  ...  The binary mask obtained from the segmented lung was used to limit the spatial domain of image registration and subsequent lung function analysis.  ... 
doi:10.1118/1.3685589 pmid:22380392 pmcid:PMC3306443 fatcat:w7tkaus7fbcz7bfvzsdeve6kbe

Reproducibility of intensity-based estimates of lung ventilation

Kaifang Du, John E. Bayouth, Kai Ding, Gary E. Christensen, Kunlin Cao, Joseph M. Reinhardt
2013 Medical Physics (Lancaster)  
Respiratory-gated CT imaging and image registration can be used to estimate the regional lung volume change by observing CT voxel density changes during inspiration or expiration.  ...  The intensity-based estimates are compared to the estimates of lung function derived from image registration deformation field.  ...  The binary whole lung mask obtained from the segmented lung was used to limit the spatial domain of the image registration and subsequent transformation-based lung function analysis.  ... 
doi:10.1118/1.4805106 pmid:23718615 pmcid:PMC3676396 fatcat:cy4bkccsxfg6tbmow24zy6kpvq

Evaluating the accuracy of 4D-CT ventilation imaging: First comparison with Technegas SPECT ventilation

Fiona Hegi-Johnson, Paul Keall, Jeff Barber, Chuong Bui, John Kipritidis
2017 Medical Physics (Lancaster)  
Two of these used deformable image registration (DIR) to quantify breathing induced lung density changes (CTVI DIR-HU ), or breathing induced lung volume changes (CTVI DIR-Jac ) between the 4DCT exhale  ...  of CTVI using clinically available 4DCT and Technegas V/Q-SPECT for 11 lung cancer patients.  ...  Acknowledgements and Conflicts of Interest We would like to acknowledge the assistance of the following staff at the Nepean Cancer  ... 
doi:10.1002/mp.12317 pmid:28477378 fatcat:frecdk6uljerdn4szhq4catggi

Estimating lung ventilation directly from 4D CT Hounsfield unit values

John Kipritidis, Michael S. Hofman, Shankar Siva, Jason Callahan, Pierre-Yves Le Roux, Henry C. Woodruff, William B. Counter, Paul J. Keall
2015 Medical Physics (Lancaster)  
Purpose: Computed tomography ventilation imaging (CTVI) aims to visualize airvolume changes in the lung by quantifying respiratory motion in four-dimensional CT (4DCT) using deformable image registration  ...  To address this, we present a streamlined CTVI approach that estimates blood-gas exchange in terms of time-averaged 4DCT Hounsfield Unit (HU) values without relying on DIR.  ...  Typically, CTVI uses deformable image registration (DIR) to visualize breathing-induced air volume changes in terms of lung density changes 3 , or volume changes 4 between the 4DCT exhale/inhale phase  ... 
doi:10.1118/1.4937599 pmid:26745897 fatcat:jfqzpss76ndrthuo2c6cwfwdg4

The Complex Lungs Deformation Involving Large Diaphragm Displacements: Experimental Data Acquisition And Analysis

Dr. Zara Ramzan, Dr. Muhammad Abdullah, Dr. Tooba Javed
2019 Zenodo  
Using an arbitrary reference image, our results showed the proposed 5DCT technique can accurately reproduce the lung deformations associated with the variety of the sampled patient breathing states in  ...  Validation experiments were conducted that compare the motion model generated free-breathing images against the ground truth images of high-pitch helically acquired scans.  ...  Introduction 4DCT imaging is an important lung imaging modality that can Paper Title:-The complex lungs deformation involving large diaphragm displacements: Experimental Data Acquisition and Analysis would  ... 
doi:10.5281/zenodo.4400918 fatcat:ujpjjdiiwretbp37yeub4jwc4u

Effects of individualized electrical impedance tomography and image reconstruction settings upon the assessment of regional ventilation distribution: Comparison to 4-dimensional computed tomography in a porcine model

Florian Thürk, Stefan Boehme, Daniel Mudrak, Stefan Kampusch, Alice Wielandner, Helmut Prosch, Christina Braun, Frédéric P. R. Toemboel, Johannes Hofmanninger, Eugenijus Kaniusas, Yingchun Zhang
2017 PLoS ONE  
Electrical impedance tomography (EIT) is a promising imaging technique for bedside monitoring of lung function.  ...  Our results suggest that GREIT with noise figure of 0.15 and non-uniform background works best for the assessment of regional ventilation distribution by EIT, as verified versus 4DCT.  ...  The experimental setup was designed for time-synchronized EIT and 4DCT measurements during ongoing mechanical ventilation.  ... 
doi:10.1371/journal.pone.0182215 pmid:28763474 pmcid:PMC5538699 fatcat:g725mvnp5fbinjzzrzrso2wx3y

Comparison of breathing gated CT images generated using a 5DCT technique and a commercial clinical protocol in a porcine model

Dylan P. O'Connell, David H. Thomas, Tai H. Dou, James M. Lamb, Franklin Feingold, Daniel A. Low, Matthew K. Fuld, Jered P. Sieren, Chelsea M. Sloan, Melissa A. Shirk, Eric A. Hoffman, Christian Hofmann
2015 Medical Physics (Lancaster)  
Methods: Respiratory-gated images of an anesthetized, mechanically ventilated pig were generated using a Siemens low-pitch helical protocol and 5DCT for a range of breathing rates and amplitudes and with  ...  Mean landmark displacement between the commercial and 5DCT images was 1.76 ± 1.25 mm while the maximum lung tissue motion over the breathing cycle had a mean value of 27.2 ± 4.6 mm.  ...  Keelin Murphy of the Image Sciences Institute at the University of Utrecht (Utrecht, The Netherlands) for use of the landmark selection and annotation software.  ... 
doi:10.1118/1.4922201 pmid:26133604 pmcid:PMC4464062 fatcat:to6mlmub5jffbm52fbsbycmvie

Predicting radiation pneumonitis with fuzzy clustering neural network using 4DCT ventilation image based dosimetric parameters

Peng Huang, Hui Yan, Zhihui Hu, Zhiqiang Liu, Yuan Tian, Jianrong Dai
2021 Quantitative Imaging in Medicine and Surgery  
The VI were retrospectively calculated from pre-treatment 4DCT data using a deformable image registration (DIR) and an improved VI algorithm.  ...  To develop a fuzzy clustering neural network to predict radiation-induced pneumonitis (RP) using four-dimensional computed tomography (4DCT) ventilation image (VI) based dosimetric parameters for thoracic  ...  The 4DCT ventilation imaging technique can be used for treatment planning, allowing ventilation imaging to be obtained without the additional costs and time of other functional imaging modalities (16)  ... 
doi:10.21037/qims-20-1095 pmid:34888185 pmcid:PMC8611464 fatcat:tamfz523pnfp3o4s7uo2wb6cza

4DCT-based measurement of changes in pulmonary function following a course of radiation therapy

Kai Ding, John E. Bayouth, John M. Buatti, Gary E. Christensen, Joseph M. Reinhardt
2010 Medical Physics (Lancaster)  
Conclusions: With the use of 4DCT and image registration techniques, the pulmonary function prior to and following a course of radiation therapy can be measured.  ...  In this article, the authors propose a method that quantitatively measures the regional changes in lung tissue function following a course of radiation therapy by using 4DCT and image registration techniques  ...  r 2 = 0.73͒ in both static and dynamic image acquisition. 34 This paper describes a technique using 4DCT, image registration, and lung biomechanical analysis to measure regional lung function before  ... 
doi:10.1118/1.3312210 pmid:20384264 pmcid:PMC2842288 fatcat:f44j4q4cw5g53a2ed3jxwl4omq

Effects of Lung Injury on Regional Aeration and Expiratory Time Constants: Insights From Four-Dimensional Computed Tomography Image Registration

Jacob Herrmann, Sarah E. Gerard, Wei Shao, Yi Xin, Maurizio Cereda, Joseph M. Reinhardt, Gary E. Christensen, Eric A. Hoffman, David W. Kaczka
2021 Frontiers in Physiology  
Respiratory structures were aligned using 4D image registration.  ...  These dynamic 4DCT imaging data provide supporting evidence for the susceptibility of poorly aerated regions to ventilator-induced lung injury, and for the functional benefits of short exhalation times  ...  Together with 4DCT image registration, this study enabled a higher resolution analysis of local aeration changes over shorter time scales.  ... 
doi:10.3389/fphys.2021.707119 pmid:34393824 pmcid:PMC8355819 fatcat:r5lyxemalneytg75rzfmaibmz4
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