1. What is the SISCO mAs Calculation?

The SISCO method calculates mAs (milliampere-seconds) by multiplying mA (milliamperes) by exposure time in seconds. This is a fundamental calculation in radiography for determining the total radiation exposure.

2. How Does the Calculator Work?

The calculator uses the SISCO formula:

Where:

• \( mA \) — Milliamperes (tube current)
• \( s \) — Exposure time in seconds
• \( mAs \) — Milliampere-seconds result

Explanation: The mAs value represents the total quantity of radiation exposure, which is crucial for achieving proper image density in radiographic imaging.

3. Importance of mAs Calculation

Details: Accurate mAs calculation is essential for producing diagnostic quality radiographs while minimizing patient radiation exposure. It directly affects image density and contrast.

4. Using the Calculator

Tips: Enter mA value in milliamperes and exposure time in seconds. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: Why is mAs important in radiography?
A: mAs controls the quantity of radiation and directly affects image density. Higher mAs produces darker images, while lower mAs produces lighter images.

Q2: What is the relationship between mA and exposure time?
A: mA and exposure time have an inverse relationship. To maintain the same mAs, if you double the mA, you must halve the exposure time.

Q3: What are typical mAs values in radiography?
A: Typical mAs values range from 0.5 to 100 mAs depending on the anatomical part being imaged, patient size, and equipment used.

Q4: How does mAs affect patient dose?
A: mAs is directly proportional to patient radiation dose. Higher mAs values result in higher patient radiation exposure.

Q5: When should I use this calculation?
A: This calculation is essential when setting up radiographic exposures, especially when changing technical factors or working with different equipment.