Digital Imaging Techniques in Radiography

Flashcards summarizing key concepts and technologies related to digital imaging techniques in radiography.

What does DBT stand for in radiography?

Digital Breast Tomosynthesis.

How does the X-ray source operate in the DBT system?

The X-ray source rotates around the compressed breast within a limited angle range to form projection images.

What is formed on the digital detector in the DBT system?

Projection images, which are then reconstructed into slices.

What is the primary function of the photoconductor in flat-panel detectors?

To absorb X-ray photons and convert them into an electrical signal.

What material is commonly used for direct conversion in DR systems?

Amorphous selenium (a-Se).

What is the difference between CCD and CMOS in imaging technologies?

CMOS is made of silicon-based semiconductors and each pixel is connected to a transistor individually, making it less expensive than CCD.

What technology was developed in radiography in 1980?

Computed Radiography (CR) using storage phosphors.

What is a significant advantage of direct conversion in X-ray imaging?

It allows for immediate conversion of X-ray photons into an electrical signal.

What type of imaging technology uses a flat-panel detector?

Direct radiography (DR).

What is an example of scanned projection radiography (SPR)?

CT scan.