Patient immobilization techniques: Rad Tech

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Immobilization of patients during imaging procedures is a critical step in obtaining quality images. It's a lot easier to take a picture of a cheetah lounging in a tree than when it's sprinting.
The same is true when producing diagnostic quality radiologic images. The slightest movement can cause a blurred image and decrease the accuracy of the image.
Likewise, improper positioning can reduce image clarity and diagnostic accuracy. As a radiologic technologist, your goal is to obtain a diagnostic quality image the first time.
When an image must be repeated, the patient and healthcare team are exposed to additional radiation. Reducing repeat exposures is one of the key reasons why patient immobilization is so important.
Effective immobilization begins with proper positioning and clear communication. Before the procedure, introduce yourself and explain your role.
Describe the examination in simple, easy to understand language and emphasize how the patient's cooperation helps produce the best possible image.
Taking time to answer questions and provide reassurance can help reduce anxiety and build rapport. Patient comfort also plays an important role in preventing movement during an imaging examination.
Patients who are uncomfortable are more likely to move during the examination, which can adversely affect image quality.
Maintaining the patient's privacy and helping them achieve a comfortable position can make it easier for them to remain still throughout the procedure.
OK, let's discuss the routine immobilization devices that you'll encounter as a radiologic technologist. These devices play an important role in reducing patient movement, improving positioning accuracy, and minimizing the need for repeat imaging.
Positioning sponges are one of the most commonly used immobilization devices. They come in a variety of shapes and sizes and are used to support the patient or the body part being examined.
By reducing the physical effort required to maintain a position, sponges help patients remain still and make accurate positioning easier.
They are commonly used for areas such as the hand, spine, and head. Stability bars are found on most upright bucky units, which are vertical upright X-ray stands.
They provide support for patients during upright examinations and help reduce swaying or loss of balance. During lateral chest imaging, the stability bar can also help position the arms out of the area of interest while providing additional steadiness for the patient.
Velcro straps help support patients who are unsteady during upright examinations or help maintain positions that can be difficult or uncomfortable for the patient to hold.
For example, a Velcro strap can help maintain dorsiflexion of the ankle during an examination of the heel bone. During CT and MR imaging, Velcro straps are commonly used to reduce movement and help secure imaging coils in the correct position.
In MR, all immobilization devices must be confirmed MR safe or MR conditional before use. Sandbags can be used alone or in combination with positioning sponges.
Because sandbags are radio opaque, they must be placed outside the area being imaged to avoid obscuring the anatomical area of interest.
Head clamps may be used during imaging of the skull. Rather than physically restraining the patient, they help remind them to remain still.
Since patients can easily move away from the clamps if necessary, this makes them more of a positioning tool than a true immobilization device.
Some patients arrive for imaging with specialized immobilization devices already in place. These devices are commonly encountered in trauma settings and are designed to stabilize injured areas, prevent further injury, and allow safe transport.
Two common trauma immobilization devices are a cervical collar and a backboard. A cervical collar helps stabilize the cervical spine and limits movement of the head and neck.
A backboard supports the body during transport and initial trauma imaging and can be used for patients with suspected spinal, pelvic, hip, or lower extremity injuries.
These devices are typically made from radiolucent materials, allowing initial imaging to be performed without removing them.
These devices must remain in place until a physician or other qualified provider has reviewed the images and determined that removal is safe.
Because trauma patients often can't be repositioned normally, the technologist must adapt the imaging equipment to the patient rather than moving the patient to fit the equipment.
For example, when a cervical collar prevents normal head movement, the X-ray tube, image receptor, or central ray angle may need to be adjusted to obtain the required projection.
You may also encounter specialized immobilization devices used in radiation therapy. These devices, which may include custom molds and other patient-specific supports, help ensure that the patient is positioned the same way during every treatment session.
Consistent positioning is essential because radiation must be delivered accurately to the intended treatment area while minimizing exposure to surrounding healthy tissues.
Pediatric and geriatric patients require special immobilization considerations. When working with pediatric patients, communication is often one of the most effective immobilization techniques.
Children can often remain still for an examination when instructions are delivered with patience, honesty, and reassurance.
Speaking at the child's eye level, using a calm voice and turning the examination into a game can help build trust and encourage cooperation.
When parents or caregivers are present, explaining that immobilization techniques help reduce repeat exposures, minimize discomfort, and produce the best possible diagnostic images can help them understand the purpose of these devices.
For infants and very young children who are unable to cooperate fully, immobilization devices are often necessary. One common technique is the mummy wrap, which is a sheet or blanket that's used to gently limit movement while helping the child feel secure.
Commercial devices such as the Pigostat and Pedia poser pediatric position chair may be used to safely position and immobilize children during imaging examinations.
Infant immobilizers, sometimes called restraint boards, use a contoured base and Velcro straps to help maintain positioning during procedures such as abdominal imaging.
Similar devices such as a plexiglass paddle, gauze and tape, or soft stockinet can help reduce movement and serve as reminders for children to remain still during the examination.
For geriatric patients, security, warmth and comfort are especially important. Many older adults are concerned about falling because mobility, balance, and agility often decrease with age.
Taking extra time, providing clear explanations, and assisting them during positioning can help them feel safe and secure.
Older adults may also become chilled more easily than younger patients. Providing warm blankets when appropriate can improve comfort and help them maintain the required position.
Additional support, such as radio loosened pads on the imaging table or positioning sponges under their knees, can reduce discomfort and make it easier for them to remain still throughout the examination.
Alright, as a quick recap, patient immobilization plays an important role in producing high quality diagnostic images while minimizing repeat exposures and unnecessary radiation.
Effective immobilization begins with clear communication, establishing rapport and patient comfort, all of which can help reduce patient movement during an examination.
As a radiologic technologist, you'll use a variety of routine and specialized immobilization devices to support positioning, improve patient safety, and maintain image quality.
Special considerations are needed when working with trauma patients, where immobilization devices often remain in place during initial imaging, as well as pediatric and geriatric patients, where communication, comfort, and security are essential for successful immobilization.