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MurphyMobile
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Joined: 26 Aug 2006
Posts: 149
Location: WNC
PostPosted: Sat Feb 03, 2007 12:09 am    Post subject: Re: Cr Doses Reply with quote

iraydee8 wrote:
Shocked I cant beleive some of these posts! We use about the same for our CR as we did for our extremity film/screen combo. Example Adult Wrist PA 60KVP @ 2 mas! How can others see an increase in 3 times or more when installing CR?

Puzzeled!


I worked with Orex scanner. An IT person is needed to pre-set the techniques that are further inside the computer program.

MM Cool
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MurphyMobile
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Joined: 26 Aug 2006
Posts: 149
Location: WNC
PostPosted: Sat Feb 03, 2007 12:15 am    Post subject: Re: CR Overexposure Reply with quote

RadMaster wrote:
I've had experience in three different institutions and would say that the overall dose is way up. Most of this is due to techs overexposing and allowing the computer to fix the image. Please post your results for others to see.


I agree with you RadMaster. I have used a portable Orex scanner for mobile radiology. The techniques are different.

I believe that when new employees use this equipment, they are not
sure what they will get. The engineer and IT specialist need to take
more time explaining this to technologists.

If you can get into the software of any program, there are special settings
for different body parts. Even with Fuji, I found that out.

I do not believe the Directors of Radiology want to learn all there is and do
not want to spend the money to show all the students, techs, and other
supervisors.

With the Orex scanner, if it was too dark, I could rescan the image before
erasing the imgage. But that is a lousy reason.

MM Cool
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CTDave
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Joined: 25 Mar 2005
Posts: 220
Location: West Virginia
PostPosted: Wed Mar 21, 2007 5:08 pm    Post subject: Re: Patient Dose and AEC calibration in CR Reply with quote

Charlie wrote:
I have just started a project looking at the optimisation of Automatic Exposure Controls (AEC) as used in CR applications. One of the aspects that I am interested in is the effect that the introduction of CR into radiology has had on patient dose. I'd be very interested in the forums' experience with CR and how, following conversion from film-screen to CR plates, you found your patient doses changing, if at all. Also, I am looking at possible AEC calibration procedures for CR systems and I wondered whether any forum members had experience in this field and what approach they had? Many thanks for any help you can give!


Please read the .pdf article by Terry Eastman here: X-ray Technique in CR
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