Medical B-mode Ultrasound Image - what does it represent?

[elgen]

Dear All,

In medical imaging, the pixel intensity of a MR image may represent T1 relaxation time, T2 relaxation time, or proton density. These are intrinsic properties of tissues.

For a B-mode ultrasound image, what does the pixel intensity represent? Do they represent the magnitude of pressure or scattered energy? or something else? How is the pixel intensity correlated to the intrinsic properties of tissue?

Thank you for the attention. Any comment is welcome.


elgen

 

[NeoDevin]

It represents the magnitude of the reflected US pulse (the pressure measured by the transducer) . It relates to the impedance mismatch of tissues in the body.

 

[elgen]

Thank you for the clarification. This draws the analogy with microwave-pulse based imaging.