beam nonuniformity ratio

(redirected from BNR)
Also found in: Acronyms, Wikipedia.

beam nonuniformity ratio



A measure of the homogeneity of a therapeutic ultrasound wave, expressed as a ratio between the ultrasound unit's average intensity (the metered output) and the peak intensity within the output wave. A completely homogeneous wave is represented by a 1:1 BNR.


FDA regulations require that the BNR be clearly labeled on therapeutic ultrasound units. A BNR of greater than 8:1 is considered to be potentially harmful.
References in periodicals archive ?
BNR Governor John Rwangombwa said the interest on the new bond will be subject to withholding tax at 5 percent to East African Community (EAC) residents and 15 percent to non-EAC members.
Dr Barnard has adapted his BNR technology to suit different climates, environmental limitations and water infrastructure across the globe.
For further information please contact Lee Evan Tabas of TABASFUNDING at 610 896 2400 or David Bartholf of BNR at 610 891 7710.
According to the Appeals Court, the lower courtas decision to extradite Vasilev to Bulgaria on embezzlement charges hasnat taken into account the rights of the defendant guaranteed by international legal agreements as well as Serbiaas justice system, BNR said.
The BNR terabit switch architecture employs 32 satellite ATM switches
In light of the available data and given the need to ensure real broad monetary conditions appropriate for both the achievement of medium-term inflation goals and for a sustainable revival of the lending process in the Romanian economy, the BNR board has decided to lower the monetary policy rate,' the bank said.
Our goal is promoting the telecommunications technology leadership of both the BUPT and BNR.
Hayes held positions in sales and engineering at Cadence, BNR (Nortel Networks), Alcatel Network Systems and General Electric Semiconductor.
Bulgariaas Finance Ministry is in talks over fresh borrowing on international markets to finance increased spending under a 2014 budget update now before parliament, BNR radio reported on Monday.
A further layer of uncertainty is added by the upcoming management changes at both BNT and BNR.
Combining our energies and talented faculty and students with BNR, one of the world's largest and most advanced private-sector research organizations, will successfully position McGill to explore the evolving challenges of fiber optics.