In plain language
In phantom measurements on clinical angiography systems, scatter from the x-ray tube collimator housing made up 20-50% of total scatter in PA projection. Adding 0.5 mm lead inside the cover lowered its share from 28% to 16%. Health effects on the fluoroscopy team were not measured.
At a glance
- Type of study
- Original research, Phantom or simulation study
- Who was studied
- Phantom or simulation (no people)
- Topics
- Room shielding and protective devicesDosimetry and monitoringDose reduction techniquesRegulation and policy
- Summary based on
- the abstract
What it found
In the PA projection, scatter from the x-ray tube collimator assembly made up a substantial share of total scatter across systems.
Key figures: 20-50% of total scatter
The collimator contribution varied with projection angle.
Key figures: 5% to 56% for -90º to 90º projections
Adding 0.5 mm lead inside the collimator cover reduced the collimator share of scatter.
Key figures: 28% to 16% of total scatter
Systems with kerma-area product meters showed more collimator scatter.
Authors suggest radiation safety practices and guidelines be revised to account for collimator scatter.
Limits to keep in mind
Phantom-based measurements on a limited, unspecified number of angiography systems, with lead modification tested on only two; abstract only, so system count and absolute dose values are not reported.
Related research summaries
- Occupational Protection in Interventional Radiology. A Joint Guideline of the Cardiovascular and Interventional Radiological Society of Europe and the Society of Interventional Radiology (2026, Guideline or consensus statement)
- Radiation exposure in interventional cardiology: a narrative review of health effects and novel approaches to ensure radiation safety (2025, Narrative review)
- Radiation protection practices in diagnostic and interventional cardiology: Position paper from Portuguese Association of Interventional Cardiology (2025, Guideline or consensus statement)
- Radiation Safety in Chronic Total Occlusion Percutaneous Coronary Intervention (2025, Narrative review)
- Addressing the Occupational Risk of Radiation Exposure in the Evolving Field of Interventional Echocardiography (2024, Narrative review)
How this summary was made
ORSIF prepared this summary with AI assistance from the abstract of the paper. A program then checked that the passage supporting each finding appears word for word in that source. A person has not yet reviewed each summary, so read the original before relying on a number. ORSIF summarizes research and does not endorse any product or company. Report a problem with this summary.
Prepared November 3, 2026.