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Hi I work with these magnets. This is the reason why there is safety checking, we ask patients wether they have metal inside their body and outside their body i.e brain shunt, heart pacemaker etc. This things can still be scanned with limitations on the power that we use, it is very important to tell the technologist your health and history of surgeries that involves metals and accidents such as metal shrapnels that went inside their skin. If there is a case that the patient had an unknown metal shrapnels accident specially in the eyes, we tend to abandon the scan and request for an xray. This is why MRI safety questionnaire is in place. Now a days most surgeries that involve metals are MRI compatible so most of MRI technologist knows how to deal with patient that has it. With regards to your query, as long as there is no metal(specially ferrous magnetic i.e iron based) attached on your knee you should be fine. With knee scan most of the patient would comment that they experience a kind of pulling sensation around the area of the scan, this is because the water molecule aligns with the iso center of the machine we also use specific camera (MRI coil) on the part that is being scanned and this entails safety as well. I hope I am able to answer your worry.

@@marifeltiamsic9471 hello. It's not a worry. It's a statement of what happened. My leg was feeling ill for 3 days at least after that. It seems I didn't suffer too much damage (or I'm failing to detect the damage, since it's under the skin and I'm not stupid enough to force load on my injured ligament just to prove a point). Good thing I signaled the MRI stuff to turn it off when I did, other vice I would have suffered that burn 100%. The only thing I found out from your comment is that if you limit the power it's possible to scan with non-ferrous metals present. But failed to highlight that even with no metals present the patient can still suffer a burn if too much power is used (which I'm sure is what happened to me). It's all about money, more power = faster scan, faster can put another patient and take their money.

It should be rem as it is a US made instrument. The use of the rad means you know which type of radiation you are measuring as there is a conversion factor called the RBE or Relative Biological Effectiveness. The RBE is 1 for beta radiation, x-rays and gamma rays, so 1 rad = 1 rem. For alpha particles the RBE is 20, so 1 rem = 20 rad, as the alpha particle is more damaging to biological material. The Roentgen unit is the measure of ionisation of dry air, an older physics unit, so more appropriate for an ionisation counter.

@@karhukivi Thanks.

@@jayytee8062 Its Roentgen, exposure rate (expressed as milliroentgen per hour or mR/hr).

Hi Justin - the requirements to be an RSO can be complicated based on the types of radioactive materials use as well as the regulatory agency (NRC or Agreement State). There are many companies that offer 40 hour RSO courses, either in person or online. Those courses are a great supplement but are often not sufficient to provide all of the required training and experience necessary to function as an RSO. Feel free to drop us a note at info@olympichp.com if you'd like to chat about what your best options are.

@@olympichp I reached out to my state this afternoon after I left this comment. Apparently there isn't a license required to be an RSO here. But in other states, do you need to have an active x-ray license in order to get certified as an RSO?

For this acquisition, we chose "Example Tomo" from the Siemens protocol list. However, any tomographic protocol will work as long as the parameters are changed correctly.

It is true that increasing the mAs increases the quantity of electrons going from the anode to the cathode. However, increasing the kVp only increases the energy of the resultant X-Ray beam - it doesn't increase the quantity of electrons.

@@olympichp It is absolutely true that increasing the kVp shifts the mean electron energy to a higher value (more average energy and hence higher penetration), but it is also true that a 15% increase in kVp is equivalent to a 200% increase of mAs. This is due to the physics of X-ray generation - the more average energy the electrons have when hitting the anode the more X-ray photons are being generated. However, indeed, increasing the kVp does not change the number of electrons generated at the cathode.

Thank you so much for your feedback - we are so happy you find them helpful!

Please reach out by email if we can help you understand anything related to this video.

You're welcome 😊

Thanks so much for your feedback!

We agree! Share with your friends :)

@@olympichp sure sir

Thank you so much!

Hi Matt, and thank you for the feedback. You're correct that many RSO's have additional duties outside of just RAM licensing duties. The ones you mention are common and there are many more. In this video, we focused on the duties of the RSO as they're defined in NUREG 1556, Vol. 9., Rev. 3. to highlight the regulatory expectation of a medical RSO. We updated the description of this video in hopes that will help.

You're so welcome! Let us know if you have an idea or suggestion for an upcoming video.

You're welcome Nic!

As always, you're one step ahead of us Nic :) We will have a Records Retention video coming your way shortly...because...keeping records is super important!

Here is the next video in the series to answer these questions! ruclips.net/video/5qERLcLG5V0/видео.html