RAD 120 - Ch 23 Technical Considerations in Digital Imaging - Key Terms

Data drop:

occurs when data elements in the detector are essentially overwhelmed with photon energy and become incapable of recognizing high-energy values

Detector saturation:

data drop that involves areas or regions of the detector.

Diagnostic acuity:

clearness, sharpness, the diagnostic quality of the image

Diagnostic efficacy:

The faithful representation of the patient on a medical radiograph

Diagnostic yield:

The amount of clinically significant information produced

Dose creep:

trend in which errors in technique selection are made on the additive side, resulting in an increased exposure technique to decrease chance of image noise and avoid repeats

Electronic masking:

cropping of an image

Electronic annotation:

electronic notes on a radiograph

Image fidelity:

The faithful representation of the patient on a medical radiograph

Optimal kVp:

the maximum kVp level that will produce images with appropriate contrast that are consistently within acceptance limits

Photon starvation:

Inadequate exposure to the detector elements