Technetium 99m Puns

Q) Why is Technetium-99m preferred for examining cerebral blood flow in brain scans instead of Iodine-123?The question asks you to reference and compare radiological and biological properties of the radionuclides.

This question has got me completely stuck, I can't find any information relating to this online.

I would really appreciate any help. Thank you :)

[EDIT] My level of understanding in this topic is very basic, so apologies if I ask lots of follow-up questions.

Dr Hywel Owen on Twitter:

https://twitter.com/hywelowen/status/1007360551981379585

"Interesting trip to France today:

1. Took taxi to airport. Lovely taxi driver who voted for #Brexit. I explained about the Govt. dithering about leaving Euratom and the risk of losing access to Technetium-99m, essential for UK medical imaging.

2. Several years ago I co-wrote a report about the risks to the UK of not having access to technetium for scans. Today, the UK does around half a million procedures a year, and we don't make any in the UK. Without Euratom all procedures stop happening. https://arxiv.org/abs/1501.03071

3. Like most people, my taxi driver hadn't even heard of Euratom until the Govt. said we were leaving it because of #Brexit, and she didn't realise one consequence is losing access to this vital medical isotope. You can't stockpile it, because it has a shelf life of about a week.

4. I asked her if she thought she'd voted to lose these vital supplies to all these medical procedures when she voted for #Brexit. She said, 'no, of course not.' Quite.

5. It turns out her husband had to have a technetium scan done last week; he was given dire warning not to miss the appointment, as these scans cost around a £1000 to do. And no technetium, no scan.

6. I told her that without a proper #Brexit deal, then after March 2019 these technetium procedures will just stop. The scan her husband had saved his life. If people need a scan after March next year, we need a deal or there just won't be any technetium.

7. My taxi driver said that leaving Euratom is a stupid idea. I agree with her. #Brexit

8. We also chatted about the lack of nurses in the NHS. My wife is a district nurse, and like many other teams in the UK they run permanently understaffed. Removing the nursing bursary, hostility to EU migrants and visa restrictions is killing nursing in the UK. #Brexit

9. Belatedly the Govt. has relaxed visa rules to try to make up the shortfall in nurses in the UK, but why was it ever restricted? The lack of nurses really harms patient care

10. So, I get to Manchester Airport, and Terminal 3 is in chaos. Security queue extends right through check-in, over 300 meters long. I thought: 'what will happen when we all need visas to come and go to Europe after next March?' #Brexit

11. The point of this week's trip is to finalise a contract for a research beamline; this beamline is aimed at improving UK patient health through research on proton therapy. We rely on skilled c

http://www.ncbi.nlm.nih.gov/pubmed/9884939

I'm an internal medicine resident and my physics-knowledge has suffered those last few years. Today, I unknowingly performed an ultrasound on a patient that had been injected with technetium 99m 10 minutes prior for a bone szintigraphy. I've spent about 30 minutes in very close (touching) proximity of that patient.

... and I'm 7 weeks pregnant.

Now on one side I'm worried because of the pregnancy and would like to know, to how much radiation I have been exposed to. On the other hand, I also want to raise awareness at my hospital for that problem, because there's no protocol that keeps things like that from happening in the future.

I've tried to estimate the amount of radiation I've been exposed to based on the fact that the patient has been injected with about 500-1000mBq Technetiom 99m and I've been close to her for about 30 minutes. My calculations led to about 0.04-0.06mSv but as I said, my physics lectures at university were years ago.

Is anyone here able to calculate that? Thank you guys /gals so much.

I know that Technetium-99 is a very radioactive isotope that is used in medical imaging. Is there a reason why there is an 'm' at the end of the nucleon number?

Hi everybody! I've been having rib pain so my MO sent me for a bone scan. I also had one in Apr 2020. I dont know what to make of it. MO didn't seem concerned but I've done some reading and I'm not so sure. Anyone have experience with this result?

2020: "There is physiologic uptake within the kidneys with excretion into the urinary bladder. Slight asymmetric focus in the posterior images, near the superior pole of the left kidney. This does not definitely overlap the ribs and is most likely soft tissue activity."

"Increased activity is seen only on the posterior images near the superior pole of the left kidney. It does not appear to be related to an osseous structure and likely relates to soft tissue activity, possibly along the kidney. Correlation with renal ultrasound could be performed."

MO wanted a CT instead of ultrasound. CT was clear.

2021: "Activity overlying the posterior aspect of the upper pole of the left kidney, just below the 12th rib on the left, is again noted. No abnormal finding seen on the previous CT in this region. This appears similar to the previous study with no additional abnormality."

"Stable bone scan with lesion again seen overlying the posterior aspect of the upper pole of the left kidney."

Thanks in advance!

Atomic number: 43

Melting point: 2157°C

Boiling point: 4262°C

Relative atomic mass: 98

Technetium is an oddball of the transition metals, being a synthetic, radioactive metal. Technetium samples are highly sought after and hard to acquire, being rare and expensive. It is usually only produced as a by-product of the nuclear power industry.

The gamma-ray emitting technetium-99m is widely used for medical diagnostic studies. Several chemical forms are used to image different parts of the body.

Use this post to discuss your sample or to give any opinions on Technetium. Next week's element will be Ruthenium. Have a good week!

I don't want to step on anybody's toes here, but the amount of non-dad jokes here in this subreddit really annoys me. First of all, dad jokes CAN be NSFW, it clearly says so in the sub rules. Secondly, it doesn't automatically make it a dad joke if it's from a conversation between you and your child. Most importantly, the jokes that your CHILDREN tell YOU are not dad jokes. The point of a dad joke is that it's so cheesy only a dad who's trying to be funny would make such a joke. That's it. They are stupid plays on words, lame puns and so on. There has to be a clever pun or wordplay for it to be considered a dad joke.

Again, to all the fellow dads, I apologise if I'm sounding too harsh. But I just needed to get it off my chest.

Do your worst!

My wife is having a bone scan and was injected with radioactive contrast agent which has a 6 hour half life. The doctor recommended that she not hold our kids or even be in a car with them (will take her about 2 hours to get home). Is this an overreaction?

I get not holding a young child after this procedure, but have a hard time believing that it would be safe to injection someone with something so radioactive that it isn’t safe to be in a car with them for 2 hours. After all, if I recall radiation declines with the 4th power of distance. However the doctor said that patients are routinely stopped in the NYC tunnels by DHS because they set off the Geiger counters.

When is it actually safe to drive home with the kids?

I'm surprised it hasn't decade.

For context I'm a Refuse Driver (Garbage man) & today I was on food waste. After I'd tipped I was checking the wagon for any defects when I spotted a lone pea balanced on the lifts.

I said "hey look, an escaPEA"

No one near me but it didn't half make me laugh for a good hour or so!

Edit: I can't believe how much this has blown up. Thank you everyone I've had a blast reading through the replies 😂

It really does, I swear!

They’re on standbi

Buenosdillas

Pilot on me!!

Hello everyone!

I'm confused about technetium-99m (Tc-99m) being a radioactive tracer (or a radiopharmaceutical).

I know that technetium-99m is a radionuclide, so, it's an unstable atom. Textbooks and websites say that Tc-99m is a radioactive tracer, or is used as a radioactive tracer. But I thought that radioactive tracers are composed of a radionuclide AND a biological molecule. So wouldn't it be more correct to say that "Tc-99m is used as a part of a radioactive tracer" since Tc-99m isn't a tracer by itself for nuclear medicine imaging or am I missing something?

Please let me know if i got anything wrong!

Dad jokes are supposed to be jokes you can tell a kid and they will understand it and find it funny.

This sub is mostly just NSFW puns now.

If it needs a NSFW tag it's not a dad joke. There should just be a NSFW puns subreddit for that.

Edit* I'm not replying any longer and turning off notifications but to all those that say "no one cares", there sure are a lot of you arguing about it. Maybe I'm wrong but you people don't need to be rude about it. If you really don't care, don't comment.

When I got home, they were still there.

What did 0 say to 8 ?

" Nice Belt "

So What did 3 say to 8 ?

" Hey, you two stop making out "

I won't be doing that today!

[Removed]

Nothing, he was gladiator.

You take away their little brooms

This morning, my 4 year old daughter.

Daughter: I'm hungry

Me: nerves building, smile widening

Me: Hi hungry, I'm dad.

She had no idea what was going on but I finally did it.

Thank you all for listening.

There hasn't been a post all year!

Why

It’s pronounced “Noel.”