attenuation value

attenuation value

A measure of an imaging beam’s reduction in intensity by the tissue through which it passes.
Examples, attenuation values Air has a negative AV; fluids have an AV up to the low 30s; non-calcified solid masses to the low 70s; calcified masses up to 100.
References in periodicals archive ?
[A.sub.E], attenuation value at early-phase CT; [A.sub.D], attenuation value at delayed-phase CT; [A.sub.WO], washout attenuation; RPEWR, relative percentage enhancement washout ratio.
The results obtained by separate laboratory testing indicated that the presence of the level-dependent system in the case of earmuffs did not impact the attenuation value expressed by the [L.sub.Cpeak] parameter, although it was important in the case of earplugs [23].
8(b)) what is manifested by the increased attenuation value with the cable length (Fig.
The attenuator has a large-scale calibrated dial which indicates the attenuation value directly.
In other words, the impact energy initially attenuates dramatically, and the attenuation value can be as high as 40%.
The figure, drawn from www.safe-at-work.com provides an overall perspective of the actual sound attenuation value of various ear plug types compared to laboratory use of the same devices.
[2,3] The measurement of an attenuation value of an anatomical region at CT examination is common.
Suppose d[[bar.P].sub.r] is the attenuation value of the received power, which is affected by rainfall and other factors between radar and the target; this attenuation value can be expressed as
It has been reported that each class of mineral in the stone gives a different attenuation value in NCCT.
The attenuation value is denoted by the number following the hyphen in the Pasternack part number.