{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,20]],"date-time":"2026-07-20T14:18:35Z","timestamp":1784557115727,"version":"3.55.0"},"reference-count":46,"publisher":"Bioscientifica","issue":"11","license":[{"start":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T00:00:00Z","timestamp":1698796800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["eor.bioscientifica.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,11,1]]},"abstract":"<jats:p>\n                    <jats:list list-type=\"bullet\">\n                      <jats:list-item>\n                        <jats:p>CT is the principal imaging modality used for the pre-operative 3D planning and assessment of total hip arthroplasty (THA).<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>The image quality offered by CT has a radiation penalty to the patient. Higher than necessary radiation exposure is of particular concern when imaging young patients and women of childbearing age, due to the greater risk of radiation-induced cancer in this group.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>A harmonised low-dose CT protocol is needed, evidenced by the huge variability in the 17 protocols reviewed. The majority of the protocols were incomplete, leading to uncertainty among radiographers when performing the scans.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>Only three protocols (20%) were optimised for both \u2018field of view\u2019 and image acquisition parameters. 10 protocols (60%) were optimised for \u2018field of view\u2019 only. These protocols included imaging of the relevant landmarks in the bony pelvis in addition to the knees \u2013 the reference for femoral anteversion.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>CT parameters, including the scanner kilovoltage (kV), milliamperage\u2013time product (mAs) and slice thickness, must be optimised with a \u2018field of view\u2019 that includes the relevant bony landmarks. The recommended kV and mAs values were very wide ranging from 100 to 150 and from 100 to 250, respectively.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>The large variability that exists amongst the CT protocols illustrates the need for a more consistent low-dose CT protocol for the planning of THA. This must provide an optimal balance between image quality and radiation dose to the patient.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>Current CT scanners do not allow for measurements of functional pelvic orientation and additional upright imaging modalities are needed to augment them.<\/jats:p>\n                      <\/jats:list-item>\n                    <\/jats:list>\n                  <\/jats:p>","DOI":"10.1530\/eor-22-0141","type":"journal-article","created":{"date-parts":[[2023,11,1]],"date-time":"2023-11-01T08:42:53Z","timestamp":1698828173000},"page":"809-817","update-policy":"https:\/\/doi.org\/10.1530\/crossmarkpolicy-16","source":"Crossref","is-referenced-by-count":5,"title":["The variability of CT scan protocols for total hip arthroplasty: a call for harmonisation"],"prefix":"10.1530","volume":"8","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7396-4068","authenticated-orcid":true,"given":"Angelika","family":"Ramesh","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, University College London, United Kingdom"},{"name":"Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4212-3741","authenticated-orcid":true,"given":"Anna","family":"Di Laura","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, University College London, United Kingdom"},{"name":"Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4086-1609","authenticated-orcid":true,"given":"Johann","family":"Henckel","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1281-6886","authenticated-orcid":true,"given":"Alister","family":"Hart","sequence":"additional","affiliation":[{"name":"Royal National Orthopaedic Hospital NHS Trust, Stanmore, United Kingdom"},{"name":"Institute of Orthopaedics and Musculoskeletal Science, University College London, United Kingdom"},{"name":"Cleveland Clinic London, United Kingdom"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"416","reference":[{"key":"bib1","series-title":"Orthopaedic Surgery","first-page":"1152","article-title":"Validation of CT-based three-dimensional preoperative planning in comparison with acetate templating for primary total hip arthroplasty","volume":"14","author":"Chen","year":"2022","unstructured":"Chen XWang YMa RPeng HZhu SLi SLi SDong XQiu G & Qian W. 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