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CT Protocols for Children

CT scans, sometimes called CAT scans, are a diagnostic imaging procedure. The CT machine uses a combination of X-ray equipment and special computer hardware and software to create detailed, multilayered images of the inside of the body. These scans can be used to create images of organ systems or bones to help doctors diagnose problems in a noninvasive fashion. As with most medical tests, there are special procedures for dealing with children requiring a CR scan.

  1. Positioning

    • CT scans require the subject to remain very still, so the machine's imaging can be appropriately clear and sharp. The scan is equivalent to posing for a long-exposure camera shot; moving will blur the images. Since young children can have a harder time holding still than adults, make sure the child is completely comfortable on the machine's table before pulling the table into the machine to start the test.

    Coaching

    • While contemporary CT machines are relatively quiet, the child will hear a series of clicks and clanking sounds while inside the CT machine's tube. The noise, combined with the small enclosure, could be frightening to the child, so it is best to warn and reassure the child about the noises before the test.

    Contrast Material

    • For some scans, contrast material is required to be in the blood stream to emphasize something in the final images. These are administered by intravenous injection or enema. Though usually benign, the child could experience minor side effects, such as flushing and a metallic taste in his mouth, for several minutes. While rare, children could experience a serious allergic reaction to the contrast material. Since children are not as reliable in reporting symptoms as adults, someone should be with the child for several minutes after the contrast material is administered to monitor the child and ensure the child won't have a serious reaction.

    Breathing

    • If the lung is being scanned, then patients need to hold their breath for the part of the procedure when the lung is scanned. Most children older than 6 can hold their breath for long enough for the test to be completed, but this should be determined before the test. If the child cannot hold his breath for the required amount of time, then soft, shallow, breathing is better for the clarity of the image.

    Parents in the Room

    • While parents are allowed to be in the exam room while their child's scan is occurring, they are required to wear a lead apron to minimize their exposure to radiation. If the parent suspects she is pregnant, then another individual should be in the room instead.

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