Radiation Protection in Interventional Procedures

Interventional procedures rely extensively on real-time X-ray imaging to guide minimally invasive therapies, offering substantial clinical benefits but also posing radiation risks to both patients and staff. Scattered and primary radiation during fluoroscopically guided interventions can deliver doses to the skin, lens of the eye and internal organs, with potential deterministic effects such as skin erythema and cataract formation, and stochastic risks including cancer induction. Contemporary practice emphasises dose monitoring, procedural optimisation and engineering controls to maintain exposures As Low As Reasonably Achievable. Protective measures range from personal shielding—lead aprons, thyroid collars and protective eyewear—to equipment innovations such as image noise-reduction algorithms and optimised system settings. Effective radiation protection integrates rigorous dosimetry, staff training, procedural protocols and emerging technologies to harmonise clinical efficacy with safety standards and regulatory dose limits.

Research from Nature Portfolio

A foundational investigation has quantified occupational eye doses among interventional cardiology teams using a novel direct eye dosimeter. Measurements of the 3 mm dose equivalent to the lens revealed that practitioners without dedicated eyewear may exceed new regulatory thresholds, while lead-acrylic glasses attenuate exposure by around 60%. Close agreement between neck dosimeter readings and direct eye dosimetry underscores the feasibility of routine monitoring. These findings have prompted recommendations for routine eye dose assessment and reinforced the critical role of specialised eyewear in meeting contemporary lens dose limits.

Radiation Protection in Interventional Procedures publication trend

The graph below shows the total number of articles in radiation protection in interventional procedures across all publications each year (not limited to Nature Index journals).

Technical terms

Fluoroscopy: A continuous X-ray imaging technique used for real-time visualisation of internal structures during interventional procedures.

Hp(3): The operational quantity for equivalent dose to the eye’s lens, measured at a depth of 3 mm in tissue, reflecting lens-specific exposure.

Kerma area product (KAP): The product of air kerma and the cross-sectional area of the X-ray beam, serving as an indicator of total radiation energy delivered to the patient.

ALARA principle: A radiation safety philosophy mandating that exposures be kept As Low As Reasonably Achievable, balancing diagnostic or therapeutic benefit against potential harm.

Dosimeter: A device worn by staff or placed on patients to record cumulative radiation exposure over a given period or procedure.

References

1. A VR neurointerventional setup for catheter-based interventions focusing on visualizing the risk of radiation. Computers in Biology and Medicine (2024).
2. Occupational eye dose in interventional cardiology procedures. Scientific Reports (2017).
3. Radiation dose in neuroangiography using image noise reduction technology: a population study based on 614 patients. Neuroradiology (2013).
4. Radiation-Induced DNA Damage in Operators Performing Endovascular Aortic Repair. Circulation (2017).
5. Evaluation of novel X-ray protective eyewear in reducing the eye dose to interventional radiology physicians. Journal of Radiation Research (2021).