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illuvionist
affect delayed scanning image plate in computer radiography?
Oct 17 2010, 8:01 PM EDT | Post edited: Oct 17 2010, 8:01 PM EDT
what will happen?
what are you opinion about this statement? Do you find this valuable?    
eliseleblanc
eliseleblanc
1. RE: affect delayed scanning image plate in computer radiography?
Oct 26 2010, 11:56 PM EDT | Post edited: Oct 26 2010, 11:56 PM EDT
According to Bushberg (2002, p. 296), the latent image in a phosphor screen remains there for weeks, but does fade over time. After approximately 8 hours, the fading is noticeable (Saia, 2008, p.234)

Bushberg, J. T. (2002). The Essential Physics of Medical Imaging. 2nd ed.

Saia, D. A. (2008). Lange Q & A: Radiography Examination. 7th ed. 1  out of 1 found this valuable. Do you?    

illuvionist
2. RE: affect delayed scanning image plate in computer radiography?
Nov 2 2010, 2:10 AM EDT | Post edited: Nov 2 2010, 2:10 AM EDT
"According to Bushberg (2002, p. 296), the latent image in a phosphor screen remains there for weeks, but does fade over time. After approximately 8 hours, the fading is noticeable (Saia, 2008, p.234)

Bushberg, J. T. (2002). The Essential Physics of Medical Imaging. 2nd ed.

Saia, D. A. (2008). Lange Q & A: Radiography Examination. 7th ed."
can you give me example of journal about this topic? Do you find this valuable?    
mrenfinger
mrenfinger
3. RE: affect delayed scanning image plate in computer radiography?
Nov 5 2010, 8:51 PM EDT | Post edited: Nov 5 2010, 8:51 PM EDT
How long of a delay are we talking about here? Many textbooks and vendors discuss degradation of the image the longer you wait to scan, and about the high sensitivity to fog with Image Plates. Perhaps a combination of loss of the original charge in the electron traps plus the added fog, over time, will severely degrade the image. Do you find this valuable?    

metal-fan-666
4. RE: affect delayed scanning image plate in computer radiography?
Oct 4 2011, 9:29 PM EDT | Post edited: Oct 18 2011, 8:02 AM EDT
X-ray something and leave it there for increasing amounts of time. X-ray the same object each time with exactly the same paramaters including processing parameters. X-ray it at 9 am, process straight away. x-ray again and leave for 1 hour then process. x-ray again and leave for 2 hours and process. It will mean 1 cassette might have to be removed from circulation for a while but this will unlikely be an issue especially in a large department. repeat until you perform one exposure at the start of your day and process it at the end. Then, increase your units by whole days since exposure instead of hours. Make sure to always leave it in the same spot after the initial exposure has been performed and clearly mark it so your colleagues will know whats going on.

After a week or two you should be able to notice visible results if the degradation does occour quickly. Do you find this valuable?    

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