SAR Reduction Techniques - MR Parameters

Dear MRI Community,
We all know that MRI is an imaging modality that has revolutionized the field of diagnostics. However, it's crucial to ensure patient safety during the MRI procedure, and SAR reduction plays a pivotal role in achieving this objective. In this video, we discover the art of optimising MR parameters to minimise the 𝑺𝑨𝑹 and avoid potential conflicts during the examination. You will learn how adjusting flip angle, repetition time (TR), and the number of slices can effectively reduce SAR levels while maintaining image quality. Don't miss out on this concise guide to maximizing patient safety and diagnostic outcomes.
If you want hear more about 𝑬𝒗𝒆𝒓𝒚𝒕𝒉𝒊𝒏𝒈 𝑴𝑹𝑰 please subscribe to the channel and follow us on our social media platforms: linktr.ee/everythingmri 🔔
Thank you for your continued support, and we look forward to connecting with you on all of our platforms 🧲
In case you missed the first part of this video click here: • SAR Reduction Techniqu...
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[@hanthejan]

Thank you so much for this excellent and most helpful video.

[@everything-mri]

Thank you so much. I am really glad you found the video useful 🙏🏻

[@armangonzales7084]

Hi Julien, with regards to TR values you mentioned we have a larger threshold using a 3T scanner. Aside from having a stronger magnetic field, anymore reason regarding larger threshold with a 3T magnet

[@everything-mri]

Hello. Thank you so much for watching. Regarding your question, the main reason for the extended TR threshold in a 3T scanner compared to a 1.5T is the increased T1 relaxation time at higher magnetic field strengths. T1 relaxation time is the time it takes for the longitudinal magnetization to recover to 63% of its original value after being perturbed by radiofrequency pulses. At higher field strengths, like 3T for example, tissues have longer T1 relaxation times, which necessitates longer TRs to allow for sufficient recovery of longitudinal magnetization and better contrast in the resulting images. I hope this make sense!

[@armangonzales7084]

@@everything-mri Thanks. You guys are doing a great job! Keep it up👍

[@francescasharif1436]

Reaching out to all the nbc fans Juli 😂 love it! X

[@everything-mri]

🤣 🤣 🤣

[@TAHA-TOUABA-RADIOGRAPHER]

Thank you so much pro

[@everything-mri]

Thanks for watching

[@LilCash217]

Thank you Can you please go over Grappa when to use it what to tweak Thank you

[@everything-mri]

Thank you for your comment. Subscribe to the channel, we will go through a multitude of MR parameters with some dedicated videos in the near future 😊

[@shahnavajtamboli9166]

Sir could you please explain cardiac MRI post processing Lv function, T1 T2 mapping,Flow quantification

[@everything-mri]

Hello. This is a recurrent question. Sadly, I am not the best expert as far as cardiac post processing is concerned. BUT, I am pretty sure for the future we can invite someone who can gently explain further the topic 👌🏻 stay tuned!

[@laurentiumihai4332]

Very good Intel broather 🙏🏻🙏🏻 I'm playing mostly with the concatenations, it let me low the tr, even if ta will rise, what you think about this?

[@everything-mri]

Increasing the concatenations is a very good strategy to avoid changing the weighting of the sequence you want to perform. It can also help you to prevent some specific type of artifacts 👍🏻 well done

[@manuelconte709]

I definitely agree. However, the chances of movement artefacts might increase.