{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Lau BKF"],"funding":["NIBIB NIH HHS","National Health and Medical Research Council"],"pagination":["1364-1382"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11528889"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["51(2)"],"pubmed_abstract":["<h4>Background</h4>The adoption of four-dimensional cone beam computed tomography (4DCBCT) for image-guided lung cancer radiotherapy is increasing, especially for hypofractionated treatments. However, the drawbacks of 4DCBCT include long scan times (∼240 s), inconsistent image quality, higher imaging dose than necessary, and streaking artifacts. With the emergence of linear accelerators that can acquire 4DCBCT scans in a short period of time (9.2 s) there is a need to examine the impact that these very fast gantry rotations have on 4DCBCT image quality.<h4>Purpose</h4>This study investigates the impact of gantry velocity and angular separation between x-ray projections on image quality and its implication for fast low-dose 4DCBCT with emerging systems, such as the Varian Halcyon that provi"],"journal":["Medical physics"],"pubmed_title":["Faster and lower dose imaging: evaluating adaptive, constant gantry velocity and angular separation in fast low-dose 4D cone beam CT imaging."],"pmcid":["PMC11528889"],"funding_grant_id":["1138899","P41 EB028744"],"pubmed_authors":["O'Brien RT","Lau BKF","Reynolds T","Vinod SK","Dillon O"],"additional_accession":[]},"is_claimable":false,"name":"Faster and lower dose imaging: evaluating adaptive, constant gantry velocity and angular separation in fast low-dose 4D cone beam CT imaging.","description":"<h4>Background</h4>The adoption of four-dimensional cone beam computed tomography (4DCBCT) for image-guided lung cancer radiotherapy is increasing, especially for hypofractionated treatments. However, the drawbacks of 4DCBCT include long scan times (∼240 s), inconsistent image quality, higher imaging dose than necessary, and streaking artifacts. With the emergence of linear accelerators that can acquire 4DCBCT scans in a short period of time (9.2 s) there is a need to examine the impact that these very fast gantry rotations have on 4DCBCT image quality.<h4>Purpose</h4>This study investigates the impact of gantry velocity and angular separation between x-ray projections on image quality and its implication for fast low-dose 4DCBCT with emerging systems, such as the Varian Halcyon that provi","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Feb","modification":"2025-04-18T12:59:46.959Z","creation":"2025-04-06T22:28:46.847Z"},"accession":"S-EPMC11528889","cross_references":{"pubmed":["37427751"],"doi":["10.1002/mp.16585"]}}