The working teems in the x-ray unite in veterinary branch exposed for daily x-ray dosage ,and must of the working staff afraid from the x-rays power for its disadvantage properties.even the students have the same felling .so we suffering from changing these information ,I know that the over expose to this power with out protection methods or in case of immunity depression is not safe and dangers .
I hope to know how to calculate the real x-ray dosage for both the human being and patient ( x-ray permissible dosage).
The occupational dose limit per year (a) is restricted to 20mSv/a.
See for example the following links:
https://www.remm.nlm.gov/ICRP_guidelines.htm
https://www-ns.iaea.org/tech-areas/communication-networks/orpnet/documents/2.2.BSS-occup-dose-limits-WEB.pd
https://radiopaedia.org/articles/dose-limits
In Germay there is an additional limit of 6mSv/a for employers of (so-called) category B. For a one shift work at about 2000hours/year this means a maximum mean dose of 3µSv/h during work.
In order to ensure this dose limit (e.g. 6mSv/a) employers have to wear a personal dosemeter close to the body. These dosemeter are regularily read out and the results have to be documented for checking by the local radiation protection authorities.
For patients there is no dose limit known to me. It is to my opinion up to the responsibility of the physician. But he still has to follow the principles of radiation protection (e.g. ALARA principle).
https://idexxcom-live-b02da1e51e754c9cb292133b-9c56c33.aldryn-media.com/filer_public/3b/33/3b339044-514b-4481-95e0-4ada22228e03/dd-minimize-radiation-exposure.pdf
It's well known that our environment itself has minimum level of radiation. Added to that radiologist are supposed to work in the same environment. Though 20mSv/a is advisable by US govt, it's advisable to carry Digital Pocket Dosimeter with them.