Re: Equine radiology

[garyi@trinityphysics.com]

Eyeball estimate from NCRP 54 Fig 4 is 6 mR/mAs at 90 kVp 40".  It 

seems likley that your suplicant meant mAs instead of mA, so using 20 

mAs gives 120 mrem entrance dose per image.  Using the rough 

approximation of 0.1% scatter at 1 meter, the handlers will get about 

0.2 mrem per image, of course dependent on how close they are.  



So, ~ 100 to 160 mrem to the horse and ~ 0.1 to 0.4 mrem for the 

handlers.



-Gary Isenhower



Subject:        	Equine radiology

Date sent:      	Tue, 6 Apr 2004 11:44:48 -0500

From:           	"Stabin, Michael" 

<michael.g.stabin@vanderbilt.edu>

To:             	<radsafe@list.vanderbilt.edu>

Send reply to:  	"Stabin, Michael" 

<michael.g.stabin@vanderbilt.edu>





Anyone with some equine radiology experience out there? Got this

request this morning:



"Please tell me approximately how many mrem the equine patient and

horse handler are exposed to during a standard limb 

(hoof)radiographic

procedure using a portable x-ray machine (70-90 kVp and 10-30 

mA)?"



Hey, with a question like this, "who ya gonna call?" Radsafe, of

course, Dosebusters Extraodinaire.



Mike



Michael G. Stabin, PhD, CHP

Assistant Professor of Radiology and Radiological Sciences 

Department of Radiology and Radiological Sciences 

Vanderbilt University 

1161 21st Avenue South

Nashville, TN 37232-2675 

Phone (615) 343-0068

Fax   (615) 322-3764

Pager (615) 835-5153

e-mail     michael.g.stabin@vanderbilt.edu 

internet   www.doseinfo-radar.com





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