• Login
    View Item 
    •   Home
    • The Christie Research Publications Repository
    • All Christie Publications
    • View Item
    •   Home
    • The Christie Research Publications Repository
    • All Christie Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of ChristieCommunitiesTitleAuthorsIssue DateSubmit DateSubjectsThis CollectionTitleAuthorsIssue DateSubmit DateSubjectsProfilesView

    My Account

    LoginRegister

    Local Links

    The Christie WebsiteChristie Library and Knowledge Service

    Statistics

    Display statistics

    Image registration guidelines impact on radiographer inter-observer variability for cervical cancer

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Authors
    Benson, R.
    Rodgers, John
    Nelder, Claire L
    Clough, Abigael
    Parker, Jacqui
    Davies, Lucy
    Bailey, R.
    McMahon, J.
    Kolbe, H.
    Pitt, E.
    Dobby, Ben
    Cree, A.
    Dubec, Michael
    Choudhury, Ananya
    Eccles, Cynthia L
    Show allShow less
    Affiliation
    The Christie NHS Foundation Trust, Radiotherapy, Manchester, United Kingdom
    Issue Date
    2021
    
    Metadata
    Show full item record
    Abstract
    Purpose or Objective This group has previously reported the impact of an educational tool on MR-CT inter-observer image registration variation using a cohort of 4 radiographers (RTI). The introduction of an MR-MR workflow required an extension of this work to evaluate the impact of experience with MR guided Radiotherapy (MRgRT) compared with the use of an image registration guide across three imaging modalities, CBCT-CT, MR-CT and MR-MR. Materials and Methods Eight radiographers participated and were divided into two cohorts, 4 with experience in MRgRT and Monaco planning system (RTMR), and 4 with limited MRgRT and Monaco experience (RTCT). Observers completed offline retrospective image registration in Monaco (v5.11.02) for 10 patients with cervical cancer including 3 CBCT-CT, 3 MR-CT and 2 MR-MR registrations per patient. All observers received an initial overview of Monaco functionality, and an introduction to MRI-based gynaecological anatomy. Rigid translational registrations were undertaken independently using soft tissue alignment of the cervix in all three planes. Resulting translations, time taken for registration and confidence scores using Likert scale of 1(not confident) to 5 (extremely confident) were recorded and compared between cohorts (RTMR, RTCT, RTI) using descriptive statistics. Following a 14 day break, the process was repeated with an education guide (developed by a multi-disciplinary team including therapeutic/diagnostic radiographers and clinicians) being introduced aiming to standardize image registration by highlighting the most relevant anatomic regions. Results Collation of the post-intervention registrations for RTMR and RTCT cohorts is on on-going. However, the initial mean registration confidence was higher in the RTMR group for MR-CT and MR-MR registrations, 2.8 and 3.2 respectively compared to the RTCT group 2.6 and 2.8. The RTCT group were more confident with CBCT-CT registrations (mean 2.1(RTCT) vs 1.7 (RTMR )). The mean pre-intervention MR-CT registration confidence levels for RTI are similar to RTMR (3.2 vs 2.8) with the RTCT cohort slightly lower (2.6). There was no statistically significant difference in registration time between all cohorts and all registration methods, with combined group mean registration times of 2.3 (1.0, 2-5), 2.4 (1.9, 1-10), 2.1(0.6, 1-4) minutes for CBCT-CT, MR-CT and MR-MR respectively. Variation in inter-observer registration was smallest in like-for-like image registration methodologies (CBCT-CT and MR-MR) for the RTMR cohort and in the CT guided methodologies in the RTCT cohort. Table 1 summarizes pre intervention inter-observer registration variations for the RTCT and RTMR cohorts. Conclusion Based on preliminary data it is anticipated that the combination of both a dedicated image registration guide and familiarity with MRI and the MRL specific software will reduce inter-observer variation and time while increasing confidence in undertaking at-treatment MR-CT and MR-MR registrations.
    Citation
    Benson R, Rodgers J, Nelder C, Clough A, Parker J, Davies L, et al. Image registration guidelines impact on radiographer inter-observer variability for cervical cancer. Radiotherapy and Oncology. 2021;161:S1660-S1.
    Journal
    Radiotherapy and Oncology
    URI
    http://hdl.handle.net/10541/624871
    Type
    Meetings and Proceedings
    Language
    en
    Collections
    All Christie Publications

    entitlement

     
    DSpace software (copyright © 2002 - 2025)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.