After piercing your taint and depositing......
Iodine 125 seeds into your prostate. How long would it take for those radioactive seeds to deliver 95% of their dose???
This is a relatively easy one, but I wanted to share the pain that I have been going through while prepping for my part two ABR physics exam on August 31. |
62 hours or so? That sucks; tumor?
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much much longer, and indepedent of tumor. half life for I-125 is 60 days.
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Is it
t = -(T½/.693) x ln(Final/Initial) t = -(59.408/.693) x ln(5/100) t = -85.726 x -2.996 t = 256.812 days? |
I agree.
A lead pig (cylinder to put source inside) with 2cm wall thickness is inside a 30cm diameter polyurethane foam shipping drum. HVL of lead is 5.5mm. HVL (half value layer, thickness of material required to reduce exposure rate by 1/2) The exposure rate constant for Ir-192 is 4.69 R cm^2/ MCi hr at 1 meter. What is the max activity to keep the activity at the surface of the shipping container less than 50 mR/hr? |
1 Attachment(s)
2cm/.55cm = 3.6HVL
3.6HVL = 9% 4690mR/hr * .09 = 422.1mR/hr 1m = 100cm 100cm/30cm = 3.3cm πr² * ∫sinx^2x * 3.3cm x = -sinxcosx * ∑f(422.1mR/hr*x)i+2 ln |-sinxcosx| / tan 1-(3.3^422.1mR/hr * x) + ∞ dy/dx (sin/cos x + 3648.2mR/hr * sec³x/cotx) * dy/dx -∫(csc²y)]0-2 3.6HVL / log(dT/dt K(y-T)) + x/2 - 2(ln 32mR/hr) * 372MCi + √(π-i)/(x) / 0 x = Attachment 195707 Just tell people to stay away from the container lol. GL on the exam, I feel for you. |
I was working off a half-life of 13 hours. Google/math fail. Hope it turns out well, though.
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I've got a better idea, drop out of school and get a job in IT. Work hard for a few years and make 6 figures. I should write a book on how to win at life.
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I get 29.9 mCi
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Originally Posted by neogenesis2004
(Post 606581)
I've got a better idea, drop out of school and get a job in IT. Work hard for a few years and make 6 figures. I should write a book on how to win at life.
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Originally Posted by neogenesis2004
(Post 606581)
I've got a better idea, drop out of school and get a job in IT. Work hard for a few years and make 6 figures. I should write a book on how to win at life.
|
Originally Posted by chpmnsws6
(Post 606597)
Or be a male nurse. Find more tail than you can handle while making the same 6 figures.
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Originally Posted by chpmnsws6
(Post 606597)
Or be a male nurse. Find more tail than you can handle while making the same 6 figures.
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Originally Posted by Bond
(Post 606604)
Win
Ohh, here is a cool tool that we use for doing DER and DE calculations: http://www.radprocalculator.com/ When all else fails... wear a dosimeter! :) Check out these guys:http://www.polimaster.us/ If you see anything you like... let me know cuz this is where I work ;) Cheers, M@ |
Originally Posted by faeflora
(Post 606602)
No nurse I have met makes more than 80k.
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my buddy's wife makes into 6 figures. night shift, 4 long days per week.
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Male nurses are knee deep in pussy. Its not like your not already driving a miata anyway.
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Originally Posted by spoolin2bars
(Post 606691)
my buddy's wife makes into 6 figures. night shift, 4 long days per week.
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Originally Posted by faeflora
(Post 606602)
No nurse I have met makes more than 80k.
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Originally Posted by djp0623
(Post 606592)
I get 29.9 mCi
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