In plain language
Over 15 years, one experienced interventional cardiologist cut median patient dose for coronary angiography from 33.8 to under 1 Gycm2 using collimation, low pulse rates, ECG-gated frames and training. Staff dose was not measured, though such methods usually lower it too.
At a glance
- Type of study
- Original research, Retrospective cohort study
- Who was studied
- Interventional cardiologists, Patients
- Where
- Germany
- Summary based on
- the abstract
What it found
Median patient dose area product for coronary angiography fell sharply over 1997 to 2012 with iterative radiation-reducing strategies by one experienced interventionalist.
Key figures: 33.8 Gycm2 baseline to 2.4 Gycm2 (conventional) and 0.6 Gycm2 (ECG-gated)
Median patient effective dose dropped to submillisievert levels.
Key figures: 6.76 mSv to 0.48/0.13 mSv (C/E mode)
Number of radiographic frames per procedure fell markedly, especially with ECG-gated acquisition.
Key figures: 548 to 105/25 frames
Fluoroscopic dose rate per second fell about tenfold, while fluoroscopy time decreased less.
Key figures: Dose-area product (DAP)(F)/s 48.9 to 4.4/3.1 mGycm2/s; fluoroscopy time 195 to 120/119 s
Final values are far below the 2013 German Registry median DAP for coronary angiography.
Key figures: 19.8 Gycm2 registry median
Limits to keep in mind
Single experienced operator at one centre with representative cohorts of unstated size; only patient dose metrics were measured, not staff dose, and changes over 15 years may reflect equipment upgrades as well as technique.
Related research summaries
- Radiation Safety In The Cardiac Catheterization Lab: A Time Series Quality Improvement Initiative (2017, Original research)
- Comparative Analysis of Radial Versus Femoral Diagnostic Cardiac Catheterization Procedures in a Cardiology Training Program (2016, Retrospective cohort study)
- Efficacy Of A Minicourse In Radiation-Reducing Techniques In Invasive Cardiology (2014, Prospective cohort study)
- Radiation protection practices in diagnostic and interventional cardiology: Position paper from Portuguese Association of Interventional Cardiology (2025, Guideline or consensus statement)
- Radiation Exposure, Training, and Safety in Cardiology (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.