Chapter 14: Immobilization Techniques

A set of vocabulary flashcards based on Chapter 14, covering the principles, devices, and specific techniques for immobilizing patients during radiographic procedures.

Motion distortion

One of the most significant contributing factors to unacceptable image quality, resulting from involuntary and voluntary patient movement.

Positioning inaccuracies

A factor that contributes to suboptimum image quality by failing to align the anatomy correctly.

Positioning sponges

A common immobilization aid used to reduce patient motion and increase accuracy by supporting the patient or specific anatomic area of interest.

Sandbags

Immobilization devices used to support or weight down anatomy, such as across the forearm or on the palm, to reduce motion.

Stockinette

Stretchable cotton fabric in the shape of a sleeve pulled over extremities; it is effective as a pediatric restraint when secured with tape.

Stability bar

A commercially available device effective in controlling many degrees of patient motion.

Cervical collar

The most common spinal trauma traction device; it should not be removed until a qualified practitioner has determined it is safe to move the patient.

Trauma spine backboard

A device used to immobilize patients in variety of situations, typically made of radiolucent material to avoid obstructing the image.

Mummification technique (Sheet restraint)

An effective, simple, and inexpensive method of restraining an infant by wrapping them in a triangular folded sheet to limit movement.

Pigg-O-Stat

A commercial upright restraint device specifically designed as an infant immobilizer for procedures such as posteroanterior chest images.

Pedia-Poser

A commercial upright restraint device used for pediatric immobilization.

Octostop Restraint Board

A radiolucent, durable restraint device limited to pediatric patients up to $1$ year old that allows the patient to be rotated $360^{\circ}$ into eight different positions.

Artifacts

Unwanted markings on a radiographic image that can be caused by certain immobilization devices; these should be indicated or annotated if they appear on the final image.

Radiolucent

A property of materials, such as those used in spine boards or Octostop boards, that allows X-rays to pass through with minimal interference.

Rapport

A relationship of trust and understanding established with a patient, which is particularly critical when working with pediatric and geriatric populations.