dc.contributor.author | Kember, SA | |
dc.contributor.author | Hansen, VN | |
dc.contributor.author | Fast, MF | |
dc.contributor.author | Nill, S | |
dc.contributor.author | McDonald, F | |
dc.contributor.author | Ahmed, M | |
dc.contributor.author | Thomas, K | |
dc.contributor.author | McNair, HA | |
dc.date.accessioned | 2016-08-26T15:48:36Z | |
dc.date.issued | 2016-07-01 | |
dc.identifier.citation | The British journal of radiology, 2016, 89 (1063), pp. 20150933 - ? | |
dc.identifier.issn | 0007-1285 | |
dc.identifier.uri | https://repository.icr.ac.uk/handle/internal/84 | |
dc.identifier.eissn | 1748-880X | |
dc.identifier.doi | 10.1259/bjr.20150933 | |
dc.description.abstract | OBJECTIVE: To evaluate three image acquisition presets for four-dimensional cone beam CT (CBCT) to identify an optimal preset for lung tumour image quality while minimizing dose and acquisition time. METHODS: Nine patients undergoing radical conventionally fractionated radiotherapy for lung cancer had verification CBCTs acquired using three presets: Preset 1 on Day 1 (11 mGy dose, 240 s acquisition time), Preset 2 on Day 2 (9 mGy dose, 133 s acquisition time) and Preset 3 on Day 3 (9 mGy dose, 67 s acquisition time). The clarity of the tumour and other thoracic structures, and the acceptability of the match, were retrospectively graded by visual grading analysis (VGA). Logistic regression was used to identify the most appropriate preset and any factors that might influence the result. RESULTS: Presets 1 and 2 met a clinical requirement of 75% of structures to be rated "Clear" or above and 75% of matches to be rated "Acceptable" or above. Clarity is significantly affected by preset, patient, observer and structure. Match acceptability is significantly affected by preset. CONCLUSION: The application of VGA in this initial study enabled a provisional selection of an optimal preset (Preset 2) to be made. ADVANCES IN KNOWLEDGE: This was the first application of VGA to the investigation of presets for CBCT. | |
dc.format | Print-Electronic | |
dc.format.extent | 20150933 - ? | |
dc.language | eng | |
dc.language.iso | eng | |
dc.publisher | BRITISH INST RADIOLOGY | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc/4.0 | |
dc.subject | Lung | |
dc.subject | Humans | |
dc.subject | Lung Neoplasms | |
dc.subject | Radiotherapy Dosage | |
dc.subject | Radiotherapy Planning, Computer-Assisted | |
dc.subject | Reproducibility of Results | |
dc.subject | Cone-Beam Computed Tomography | |
dc.subject | Four-Dimensional Computed Tomography | |
dc.title | Evaluation of three presets for four-dimensional cone beam CT in lung radiotherapy verification by visual grading analysis. | |
dc.type | Journal Article | |
dcterms.dateAccepted | 2016-04-20 | |
rioxxterms.versionofrecord | 10.1259/bjr.20150933 | |
rioxxterms.licenseref.uri | https://creativecommons.org/licenses/by-nc/4.0 | |
rioxxterms.licenseref.startdate | 2016-07 | |
rioxxterms.type | Journal Article/Review | |
dc.relation.isPartOf | The British journal of radiology | |
pubs.issue | 1063 | |
pubs.notes | No embargo | |
pubs.organisational-group | /ICR | |
pubs.organisational-group | /ICR/Primary Group | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Lung Radiotherapy | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Radiotherapy Physics Modelling | |
pubs.organisational-group | /ICR/Primary Group/Royal Marsden Clinical Units | |
pubs.organisational-group | /ICR | |
pubs.organisational-group | /ICR/Primary Group | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Lung Radiotherapy | |
pubs.organisational-group | /ICR/Primary Group/ICR Divisions/Radiotherapy and Imaging/Radiotherapy Physics Modelling | |
pubs.organisational-group | /ICR/Primary Group/Royal Marsden Clinical Units | |
pubs.publication-status | Published | |
pubs.volume | 89 | |
pubs.embargo.terms | No embargo | |
pubs.oa-location | http://dx.doi.org/10.1259/bjr.20150933 | |
icr.researchteam | Lung Radiotherapy | |
icr.researchteam | Radiotherapy Physics Modelling | |
dc.contributor.icrauthor | Nill, Simeon | |