Radiographers show substantial uncertainty about how localiser radiograph direction affects radiation dose and ATCM behaviour¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r1–r2 · q2
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person · recheck by 2031: baselines and conditions change

Subclaims¶

q2 i? Only 31.0% considered the effect of localiser direction on dose definite, 35.4% thought it probable, and 14.1% were uncertain, indicating incomplete recognition of a modifiable dose factor. → Hadi Yasser H. 2026 q2 i? On the ATCM statement about localiser radiograph direction, 55.2% disagreed or strongly disagreed, suggesting its dependency on the localiser was less consistently recognised than core ATCM principles. → 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 · r2

Survey results section reporting responses on whether X-ray tube direction during scout acquisition affects dose; most acknowledged a potential effect, though uncertainty remained, with 14.1% uncertain and 16.0% believing it probably would not affect dose.

"113 (35.4%) believed it would probably affect dose in mis‐centred patients, while 99 (31.0%) considered the effect definite; 45 (14.1%) were uncertain, whereas 51 (16.0%) believed it would probably not affect dose."

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

Likert-scale item (Figure 2) on whether localiser radiograph direction influences ATCM; the article interprets the dispersed pattern as showing the localiser dependency "was less consistently recognised" than foundational ATCM principles.

"Here, 177 respondents (55.2%) selected disagree or strongly disagree, while 68 (20.7%) neither agreed nor disagreed and only 68 (20.7%) agreed or strongly agreed."

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
• Mean CT centring knowledge score indicates only moderate proficiency, with greater score variability among less experienced and lower-volume radiographers — related
• Vertical off-centring below the gantry isocentre is the most frequently reported CT positioning error among radiographers — related
• CT-specific qualification, experience and workload were not significantly associated with high CT centring knowledge scores in the international sample — related