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Discussion: Lead Sheet and X-Rays ----------------------------
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aqdem |
Lead Sheet and X-Rays ----------------------------
Aug 6 2010, 12:58 AM EDT
if any member of our Family (wiki radiography) can aswer to my doubt about if 2mm lead is installed in X-Ray room for 125kv this room is in use for almost 5 years dose X-Rays will effect this lead thickness as the sorce is still 125kv and shell we replace the lead after some time to prevent radition leakage? thanks & best regards Baig Do you find this valuable? |
eliseleblanc |
1. RE: Lead Sheet and X-Rays ----------------------------
Aug 25 2010, 9:07 PM EDT
Hi Baig, I have never heard that x-rays effect lead thickness over time. Where did you hear this? I suppose if the building shifts over time the lead sheets in the wall might move away from each other creating a gap there could be an increase in radiation leakage. Hope you find an answer to this question, Elise 1 out of 1 found this valuable. Do you? |
vitharana |
2. RE: Lead Sheet and X-Rays ----------------------------
Aug 26 2010, 10:56 PM EDT
The is no reason why lead sheets should be changed unless it is cracked or damaged. X- rays cannot change lead thickness. Is there any theory implying x-rays will change lead?
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aqdem |
3. RE: Lead Sheet and X-Rays ----------------------------
Aug 27 2010, 12:58 AM EDT
Dear friend,I must thank you for your intrest and reply, with that has cleared my doubts and now I can sleep well, thank you once again best regards Baig 2 out of 2 found this valuable. Do you? |
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ali_nahardani |
4. RE: Lead Sheet and X-Rays ----------------------------
Sep 16 2010, 12:59 PM EDT
hi, i talked about it with a medical radiation engineer and he said that it could affect the lead sheet's width. because as the result of photoelectric effect we have ions, and this ion reacts with the air molecules and the ions of the air in each exposure, the width gets lower.
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vitharana |
5. RE: Lead Sheet and X-Rays ----------------------------
Sep 16 2010, 11:11 PM EDT
| Post edited: Sep 16 2010, 11:13 PM EDT
Dear Ali Nahardani,What your engineer has told might have some truth. Yet the erosion caused by oxidation of lead should be quite neglegible. And the ionization caused by the x-ray exposure is not permanent. The electrons do not leave the material leaving the ion alone. Otherwise think of the life span of the lead sheets used in the light beam diaphragm. Do we ever change them during life time of the equipment, because their thickness is reduced? 1 out of 1 found this valuable. Do you? |
