In the effort to make digital radiography (DR) detectors lighter and easier to handle, manufacturers have reduced the amount of internal shielding on the backside of detectors. While this improves portability, it can also increase the risk of backscatter radiation artifacts — especially during challenging positioning angles and high-exposure exams.
A radiograph affected by backscatter artifact will display a faint image of the detector’s internal electronic components overlaid on the patient image, which can interfere with diagnostic interpretation.
Backscatter artifacts are most often seen in:
Abdomen exams
Lateral spine views
Pelvis imaging
Cross-table lateral hips (particularly prone to artifacts)
While backscatter cannot always be eliminated entirely, there are proven steps technologists can take to minimize its occurrence:
Collimate as much as reasonably possible to limit unnecessary exposure.
Avoid overexposure, especially in high-dose exams.
Place lead shielding behind the detector to help block stray radiation.
Backscatter artifacts are a common but preventable issue in DR imaging. If you need guidance on handling this or other equipment performance concerns, call us at 1-800-701-XRAY.
