intro to digital imaging 2

Question 1

What are the key components of the digital imaging system?

Answer 1

• X-ray tube (radiation source).
• The patient (source of diagnostic information).
• Remnant beam (radiation pattern exiting the patient).
• Image receptor (captures diagnostic information).
• Image processing and display system.

Question 2

What is the function of the X-ray tube in diagnostic imaging?

Answer 2

Production of X-rays

Question 3

Why do X-ray photons have different abilities to penetrate tissues?

Answer 3

Different tissues in the body attenuate (absorb) X-ray photons to varying degrees, creating contrasts in the diagnostic image.

Question 4

Why is the patient a key element in the imaging chain?

Answer 4

The patient contains all the useful diagnostic information, which is transferred and captured by the X-ray system

Question 5

What is remnant radiation?

Answer 5

• Remnant radiation is the beam exiting the patient, containing a pattern of X-ray photons corresponding to the patient’s anatomical structures.
• This radiation is used to create the diagnostic image.

Question 6

How do modern digital image receptors differ from analog systems?

Answer 6

Analog systems: Use film-based recording and viewing systems.
Digital systems: Use electronic devices for recording, processing, and viewing images.

Question 7

What are the steps in capturing a digital diagnostic image?

Answer 7

• The remnant beam exits the patient and interacts with the image receptor.
• The receptor absorbs the beam’s energy, converting it into an electronic signal.
• The signal is processed to produce the diagnostic image.

Question 8

What is the role of the radiographer in digital imaging?

Answer 8

Understand the basic concepts and roles of each component in the digital imaging system.

Align the characteristics of the X-ray beam with the anatomical structures under investigation for optimal image quality.