Personal protective equipment (PPE) is essential for healthcare workers exposed to radiation. However, it’s only one piece of the puzzle when it comes to radiation safety protection. While PPE like lead aprons and thyroid shields help minimize exposure, they can’t fully protect healthcare workers performing long fluoroscopy-guided procedures or back-to-back diagnostic imaging procedures from scatter radiation.
Lead shields, radiation barriers, and room design address this challenge by enhancing protection. Read on to understand how these complementary safeguards work alongside PPE and how they fit into a comprehensive radiation safety program.
What Are Lead Shields and Radiation Barriers, and What Do They Actually Do?
Lead shields and radiation barriers are physical structures that intercept scatter radiation before it reaches healthcare workers, patients, or anyone else in the procedure area. While PPE protects the individual, these structures extend that protection to the entire area, providing coverage that wearable garments can’t.
Barriers come in several forms, each suited to different clinical settings:
- Fixed operator screens are built directly into the procedure area and provide consistent protection without any setup time required.
- Mobile barriers sit on wheeled stands and can be repositioned during procedures or moved easily between rooms.
- Semi-fixed barriers combine the features of both fixed operator screens and mobile barriers.
All these barriers excel at minimizing radiation exposure because they contain lead, which has a high atomic number and density. These qualities make it effective at absorbing and scattering X-ray photons before they travel far enough to reach people — a process known as attenuation.
Note: While these barriers offer protection, they aren’t a substitute for PPE. Staff in the procedure area still need both structural protection and garments for better scatter radiation protection.
Where Are Radiation Barriers Most Commonly Used in Hospitals?
Radiation barriers protect staff in clinical environments where they must remain present during imaging. This includes:
- Fluoroscopy suites, where some specialized exams can take up to three hours and scatter radiation builds up significantly over time.
- Interventional radiology suites, where staff work near radiation sources during image-guided procedures.
- Cardiac catheterization labs, where multiple procedures are performed daily using equipment that produces scatter radiation.
- Operating rooms with C-arms, where a mobile imaging unit makes structural protection especially challenging.
Mobile radiation barriers are particularly practical in the operating room setting. Because the C-arm moves frequently during surgery, fixed screens aren’t ideal for these environments. In contrast, mobile barriers are suitable as staff can reposition them as the C-arm moves without compromising the sterile field or disrupting the surgical workflow.
How Does Room Design Contribute to Radiation Protection?
It’s easy to overlook medical room design. Yet, it’s one of the most important aspects of a comprehensive radiation protection program.
A well-designed room offers an extra layer of protection without requiring any ongoing intervention. In contrast, a poorly designed room might require remediation if it doesn’t meet compliance standards, which can be disruptive and costly.
When designing rooms to protect individuals from radiation exposure, professionals usually focus on structural shielding. Structural shielding or fixed shielding involves the permanent installation of lead-lined walls, ceilings, floors, doors, and leaded glass observation windows that work together to contain radiation within the imaging area.
Lead-lined room design must safeguard individuals from primary and scatter radiation from all directions. This includes adjacent spaces above and below the imaging room.
During room design, the operator barrier in radiology settings (usually a control booth) deserves special attention. Designed as a primary protective barrier, it should meet a minimum of 1/16-inch lead equivalence per standard guidelines and provide sufficient unobstructed floor space for staff to work safely.
Before any room modification or new equipment installation, OSHA recommends consulting a qualified expert (typically a health physicist) to evaluate the shielding design. While doing this might feel like an additional time-consuming step, consulting can prevent construction delays, costly remediations, or compliance issues during inspections.
What Should Change if a Facility Upgrades Imaging Equipment?
Facilities must conduct formal shielding reviews whenever any of the following happen:
- New imaging equipment is installed, or existing equipment is replaced.
- Procedural workloads increase significantly.
- The use or occupancy of adjacent rooms changes.
In each of these scenarios, assuming that existing shielding remains adequate may be a safety risk. Newer imaging equipment typically operates at higher energy levels than its predecessor. As a result, shielding designed for older technology may be unable to handle the increased output.
Older facilities are particularly at risk, as walls, ceilings, and floors may not have been designed to support increased energy demands, necessitating supplemental shielding.
How Do Engineering Controls Like Shields and Room Design Fit Into the ALARA Framework?
ALARA (As Low As Reasonably Achievable) is the guiding principle behind every radiation protection decision. The ALARA principle in radiology isn’t a single intervention. Rather, it’s a layered framework that organizes radiation protection into three distinct layers. These include:
- Engineering controls in radiation safety include lead shields, radiation barriers, and room design. These controls minimize baseline radiation exposure before procedures begin.
- Administrative controls that supplement engineering controls. These include signage, warning systems, and operating procedures that govern how staff work within the clinical setting.
- PPE is the final layer of protection and includes lead aprons, gloves, hats, and other protective accessories.
AORN’s Guidelines for Perioperative Practice reflect the ALARA framework. In its guidelines for ORs using C-arms, AORN recommends that staff:
- Wear appropriate PPE throughout imaging procedures.
- Stand at least six feet from the radiation source when possible.
- Use efficient imaging techniques to reduce exposure time.
Basically, the ALARA framework doesn’t place the full burden on PPE. It requires engineering and administrative controls to work alongside PPE to enhance radiation shielding in hospitals.
How Does RadCare Services Support a Complete Radiation Protection Program?
Lead shields, radiation barriers, and room design form the structural foundation of a solid radiation safety program. However, they are just one part of the equation. The garments your staff wear during every procedure also play a major role in providing radiation protection.
That’s where RadCare Services (RCS) comes in. We are the nation’s first and only full-service platform for X-ray garment lifecycle management. From deep cleaning and disinfection to repairs and compliant disposal, we’ll handle your garment management needs so you can focus on what matters most, caring for patients. Contact us today.
