Sir, You have knowledge of the subject matter coupled with the ability to give examples to quickly and easily teach others. I will most definitely share your video with family and friends! Thank you for taking the subject of how we calculate what really matters in radiation exposure and converting it into something readily usable in this great little video presentation!
Its so nice to see someone who understands this to such a degree that they can explain it in terms that regular people can understand. Einstein would be proud.
@@HowRadiologyWorks sir is it true that head ct exposes to around 75 mgy And it exposes approx 30% to the brain and 70% to eyes, skull, ears, salivary glands, bone marrow, thyroid and skin
1. What organs will receive radiation from a CT colonography? 2. How do I know if the damaged DNA have been repaired? 3. If a damaged DNA from radiation is going to mutate to become cancer, how long does it take? 4. If a damaged DNA from radiation is going to mutate to become cancer, can diet or any stuff prevent it from becoming cancer? Thanks.
For an abdominal Ct Scan that had 152 mGy*cm -- is that a lot of radiation? How much in msv? I know they grade CT scans like 1-8 sometimes? Chest Xray is .01 ?
Xray of sinuses - "Image And Fluoroscopy Area Dose Product" = 1.673, which according to DICOM info is dGy*cm*cm. When doing head CT it's 1.7 mSv.. But when converting sinus xray's 1.6 dGy to mSv, that's 163 mSv... Is this correct? How is this number so large and higher than for head CT?
@@HowRadiologyWorks Hello, I already calculated my dose and it puts 0.46, is this real, does it seem little? I have seen that Men have echoed 227 images and it seems to me many, is it normal that 227 images are 0.46 mSv? Thanks for your reply
I am 23 year old. I had CT angio Aorta with Contrast. As per the radiologist, radiation used is 1608mcgy. Isn't to high if we use 1 conversion factor then 1608msv?
How radiation is absorbed? What does absorbed means x ray or gamma photons ejecting an electron and transferring their energy to kinetic energy to the electron? Or something else And why there’s many units confuses me
Exactly Peator, absorbed radiation is where the energy of the radiation is deposited in the tissue. This can result in heating the tissue slightly (not easily measured) but also the ionization events are the more damaging ones. Sorry for all the terms, they are needed so each term is unique.
@@HowRadiologyWorks I thought 1 mGy equals 1 msv? If a typical brain scan is around 2 msv wouldn't it be 2 mGy? I'm a layperson BTW, not a student or anything.
It is the energy deposited for a given mass. The x-rays will interact quickly and will not remain in matter (such as your body). So it is not absorbed like water in a sponge. But absorbed does mean that radiation deposits energy.
Thabks fir explaining every bidy knows that and all is talked the same in the internet we need to see luve examples on xeays ion chambers and dosimeters this way no one will understand for thaousands if yeara if you really want to make people what u r talking about and the internet inly speak of equivelant sievert and gray but no examples how will anybody uderstand with ni luve examples
You can request a dose report with your images but again it will be in CTDI and DLP. But you don’t need to worry about your exact number you can get a general sense of the dose for common procedures here howradiologyworks.com/x-ray-ct-dose-to-background/
![How to measure X-ray or CT Dose ( with Ion Chambers ) [Rad Techs]](http://i.ytimg.com/vi/PTTzdRwIo1I/mqdefault.jpg)
![How to measure X-ray or CT Dose ( with Ion Chambers ) [Rad Techs]](/img/tr.png)
Sir, You have knowledge of the subject matter coupled with the ability to give examples to quickly and easily teach others. I will most definitely share your video with family and friends!
Thank you for taking the subject of how we calculate what really matters in radiation exposure and converting it into something readily usable in this great little video presentation!
Thanks for the thoughtful comments much appreciated
Its so nice to see someone who understands this to such a degree that they can explain it in terms that regular people can understand. Einstein would be proud.
Thanks for the high praise, much appreciated
This video actually makes sense compared to others, thanks!
High praise, we aim to make sense as much as possible!
@@HowRadiologyWorks sir is it true that head ct exposes to around 75 mgy
And it exposes approx 30% to the brain and 70% to eyes, skull, ears, salivary glands, bone marrow, thyroid and skin
This is an excellent easy to understand explanation!
Great thanks for the comment
thank you.. so made it so simple that i won't forget it ...thank you again .
You’re welcome, glad we could simplify it for you.
thank you, as others said yours is the only video that made sense and made it simple!! 😭
Great, thanks Anika. That is what we are all about. Let me know if there are other areas of x-Ray that we haven’t covered yet
1. What organs will receive radiation from a CT colonography? 2. How do I know if the damaged DNA have been repaired? 3. If a damaged DNA from radiation is going to mutate to become cancer, how long does it take? 4. If a damaged DNA from radiation is going to mutate to become cancer, can diet or any stuff prevent it from becoming cancer? Thanks.
Thank u so much!!! Finally u explained it the most easy way!!! So gratefull
Glad to help. Check out our other videos and share with your friends.
love these bite-sized contents
I love the explanation. I wish you a great day!
Same to you, have a great one
For an abdominal Ct Scan that had 152 mGy*cm -- is that a lot of radiation? How much in msv? I know they grade CT scans like 1-8 sometimes? Chest Xray is .01 ?
If I have a target absorbed dose in mGy and a known area how do I calculate the kVp and mAs required to produce a given DAP in mGy?
What are the radiation weighting factors for Alpha, Beta, Gamma? (I'm a Nuclear Medicine student.)
Here is a more detailed post, alpha is around 20 as it does much more damage
Thanks
That was really helpful
Glad to hear that! Share the love and thanks for commenting.
Xray of sinuses - "Image And Fluoroscopy Area Dose Product" = 1.673, which according to DICOM info is dGy*cm*cm. When doing head CT it's 1.7 mSv.. But when converting sinus xray's 1.6 dGy to mSv, that's 163 mSv... Is this correct? How is this number so large and higher than for head CT?
These are different units. I have a separate video on Dose Area Product or Kerma Area Product but I don’t have a calculator currently
absolutely the best
Thanks for your comment Nela, that helps keep us going
Hello, at the hospital they did a CT of my paranasal sinuses and it says that they used 222.6 mgy*cm, how much is this in mSv? Thank you
We have a calculator on our website for just this case, try it out howradiologyworks.com/dlp-calculator/
@@HowRadiologyWorks Hello, I already calculated my dose and it puts 0.46, is this real, does it seem little? I have seen that Men have echoed 227 images and it seems to me many, is it normal that 227 images are 0.46 mSv? Thanks for your reply
They told me i got 250 mgy cm2, is this low or high or what?
@@jericho9653 Are you talking about sinus CT? If so, it's low, don't worry.
@@milena9338 chest ct scan? What you think?
What about depleted uranium exposure? If you had to breathe it in and it's on your clothes for weeks?
My expertise is on radiology, sorry I don’t have familiarity with this topic
I hope you're not asking for yourself brother.
How would you calculate the effective dose on a frontal abdomina AP / X-ray where there absorbed dose was 0.0667 (nose to rectum)
Sorry we don't answer specific dose questions.
Although you arw bettwr then others good job
Thanks
Thankk youuu...
You’re welcome ☺️
I am 23 year old. I had CT angio Aorta with Contrast. As per the radiologist, radiation used is 1608mcgy. Isn't to high if we use 1 conversion factor then 1608msv?
This is the video you want since you’re input is in DLP. Dose Length Product to Effective Dose, (DLP to mSv)
ruclips.net/video/W_jx1jLk7q4/видео.html
@HowRadiologyWorks but in your video its mgy.cm but my radiologist told 1608mcgy
Is mean glandular dose the same as average glandular dose in mammography? Is this also the same as 'organ dose'
Thank you
You're welcome
How radiation is absorbed? What does absorbed means x ray or gamma photons ejecting an electron and transferring their energy to kinetic energy to the electron? Or something else
And why there’s many units confuses me
Exactly Peator, absorbed radiation is where the energy of the radiation is deposited in the tissue. This can result in heating the tissue slightly (not easily measured) but also the ionization events are the more damaging ones. Sorry for all the terms, they are needed so each term is unique.
Total DLP as 21mgycm for lung with k constant for lung 0,015 means nearly 0,30 mSv ?
Sorry we don't answer specific dose questions.
So how much is absorbed in a typical head scan in terms of mGy?
The CTDI for a typical head is in the 30-60 mGy range
@@HowRadiologyWorks I thought 1 mGy equals 1 msv? If a typical brain scan is around 2 msv wouldn't it be 2 mGy?
I'm a layperson BTW, not a student or anything.
Is 519 mGy cm big dose for neck CT?
No that’s a normal dose
@@HowRadiologyWorks Thanks!
On my CTA said i took 3975.17 mgy How much is It in MsV? I never seen that mgy before
If you go to Howradiologyworks.com and use the Rad Calc for DLP to mSv you can compute, you will also need to enter the patient age and body part
So absorbed dose is it the amount in your body?
It is the energy deposited for a given mass. The x-rays will interact quickly and will not remain in matter (such as your body). So it is not absorbed like water in a sponge. But absorbed does mean that radiation deposits energy.
Thabks fir explaining every bidy knows that and all is talked the same in the internet we need to see luve examples on xeays ion chambers and dosimeters this way no one will understand for thaousands if yeara if you really want to make people what u r talking about and the internet inly speak of equivelant sievert and gray but no examples how will anybody uderstand with ni luve examples
How can I know my ct scan dose value in msv....it only mention 110 kv and 200 mAs....
The CT scanners should also report the CTDI (mGy) and DLP. I will have a video coming on how those relate to mSv
@@HowRadiologyWorks no. Nothing is mention in my report ....can I calculate msv value in given kv and mAs....
You can request a dose report with your images but again it will be in CTDI and DLP. But you don’t need to worry about your exact number you can get a general sense of the dose for common procedures here howradiologyworks.com/x-ray-ct-dose-to-background/
Sir one more question sir....how much dose for ct sinus ....kindly reply sir
Around 0.75 mSv , significantly less than a year of background radiation