Mean CT centring knowledge score indicates only moderate proficiency, with greater score variability among less experienced and lower-volume radiographers¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r1 · q2
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? The mean composite knowledge score was 4.66 ± 1.79 out of 8 (median 5, IQR 3), which the authors interpret as only moderate proficiency. → Hadi Yasser H. 2026 q2 i? Greater variability in scores was observed among radiographers without CT-specific qualifications, those with fewer than 10 years of experience, and those performing fewer than 60 scans per week. → Hadi Yasser H. 2026 (2)

Evidence¶

Hadi Yasser H. 2026¶

Hadi Yasser H., Bani‐Ahmad Mo'men, Moore Niamh, Clark Kevin R., Al‐Hayek Yazan, Albeshan Salman M., Alghamdi Sultan B., Precht Helle, England Andrew, McEntee Mark. (2026). Patient Centring in CT: An International Survey of Clinical Practice and Future Directions. Journal of Medical Radiation Sciences. https://doi.org/10.1002/jmrs.70119

q2 · i? · associational · r1

Composite knowledge score (range 0–8) from eight items on vertical mis-centring, ATCM principles, HU accuracy and localiser direction; Shapiro–Wilk W was 0.958 with p < 0.001 (Table 2).

"The mean ± SD score was 4.66 ± 1.79 (median 5 [IQR 3]). Scores were non‐normally distributed (p < 0.001), and the 95% CI for the mean was 4.47–4.86"

Hadi Yasser H. 2026 (2)¶

Hadi Yasser H., Bani‐Ahmad Mo'men, Moore Niamh, Clark Kevin R., Al‐Hayek Yazan, Albeshan Salman M., Alghamdi Sultan B., Precht Helle, England Andrew, McEntee Mark. (2026). Patient Centring in CT: An International Survey of Clinical Practice and Future Directions. Journal of Medical Radiation Sciences. https://doi.org/10.1002/jmrs.70119

q2 · i? · associational · r1

Discussion observation that the wider spread of scores within these groups suggests knowledge in early-career and lower-volume practitioners is less consolidated, implying mean scores may underestimate their educational needs.

"greater variability in scores was observed among radiographers without CT‐specific qualifications, those with fewer than 10 years of experience, and those performing fewer than 60 scans per week."

Discussion¶

Related Claims¶

• Routine post-acquisition verification of HU values is uncommon and knowledge of positioning effects on CT numbers is inconsistent — related
• Access to and consistent use of automated centring technology remain limited among CT radiographers — related
• Radiographers show substantial uncertainty about how localiser radiograph direction affects radiation dose and ATCM behaviour — related
• CT-specific qualification, experience and workload were not significantly associated with high CT centring knowledge scores in the international sample — reports the opposite
• Vertical off-centring below the gantry isocentre is the most frequently reported CT positioning error among radiographers — related