Skip to main content
This site will look better in a browser that supports web standards, but it is accessible to any browser or Internet device.

QUESTIONS
» Equipment/QA

These questions are concerned MRI hardware and quality control of images.

« Question list

dB vs. dB(A)

Answer this...

What's the difference between dB and dB(A)?

Decibels (dB) are a measurement of sound intensity over the standard threshold of hearing. dBA is sound intensity with an "A" contour filter. The filter adjusts the measurement to account for the way in which the ear responds to different frequencies of sound. A good introduction may be found at the excellent physics website: Hyperphysics.

« Back to Equipment/QA question list

 
(This page: http://www.revisemri.com/questions/equip_qa/dba)