Radiologic Exposure Parameters
This exposure parameter controls the strength and penetration of the X-ray beam.
What is kVp?
This technique uses preset exposure settings based on body part and simplifies imaging.
What is anatomically programmed radiography (APR)?
This method is known for control and flexibility in setting exposure factors.
What is manual kVp/mAs selection?
This exposure factor influences the number of X-ray photons generated and affects image density and patient dose.
What is mAs?
This method increases precision by stopping exposure once enough radiation reaches the detector.
What is automatic exposure control (AEC)?
This method is known for ease and standardization.
What is APR?
This kVp/mAs combination minimizes dose but may lower contrast.
What high kVp/low mAs?
APR can struggle with this if patient anatomy or pathology is unusual.
What is lack of flexibility?
This method excels in dose efficiency and consistency.
What is AEC?
This kVp/mAs combination maximizes contrast but increases radiation exposure.
What is low kVp/ high mAs?
AEC effectiveness depends on these two key factors.
What are proper patient positioning and correct detector cell selection?
Mistakes in using AEC are often caused by these.
What are poor positioning and incorrect detector cell usage?
Manual selection of these two parameters allows technologists to tailor exposure based on patient volume, part, and indication.
What are kVp and mAs?
These preset exposure settings in APR are based on specific body parts and are stored in the system.
What are pre-set algorithms?
Knowing the strengths and weaknesses of manual, APR, and AEC techniques helps radiologic technologists achieve this goal.
What is maximizing patient safety and achieving positive diagnostic results?