Question

After performing an abdominal scan for trauma, the radiologist requests reconstructed images of the lumbar spine. The raw data is not saved on the CT scanner. This will require:

Answer 1

Without saved raw data from a CT scan, the patient must undergo another scan for lumbar spine reconstruction, leading to additional radiation exposure.

Step-by-step explanation:

When the radiologist requests reconstructed images of the lumbar spine from an abdominal scan for trauma but finds that the raw data is not saved on the CT scanner, it implies that the original scans need to be retaken in order to generate the new images.

Computed tomography (CT) or computed axial tomography (CAT) scanners create detailed three-dimensional images of the body by collecting X-ray images in "slices" as the scanner revolves around the patient. Complex computer-image processing then analyzes the relative absorption of the X-rays from different directions.

However, without the raw data, the patient will have to undergo another scan. This is not only time-consuming but also exposes the patient to additional radiation, which is a significant concern, especially given that CT scanning involves higher doses of radiation compared to standard X-rays.