Time-of-Flight Angiography, Flow Related Enhancement and Saturation Bands | MRI Physics Course #24

MRI physics question bank is now live!
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Let's turn our attention to time-of-flight effects that cause brightness in blood vessels. This phenomenon is known as flow related enhancement. Blood entering the slice during the gradient echo pulse sequence is unsaturated and therefore provides high signal. Stationary tissues become partially saturated and appear dark.
Blood can be saturated using saturation bands to prevent signal generation from blood flowing in to the slice from a particular direction.
The 2D slices can then be aggregated and a 3D maximum intensity projection can be formed.
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Not sure if the question banks are for you?
If you're here, you're likely studying for a radiology physics exam. I've spent the last few months collating past papers from multiple different countries selecting the most commonly asked questions. You'll be surprised how often questions repeat themselves!
The types of questions asked in FRCR, RANZCR AIT, ARRT, FC Rad Diag (SA), ABR qualifying Core Physics and MICR part 1 are surprisingly similar and the key concepts remain the same throughout. I've taken the most high-yield questions and answered them in video format so that I can take you through why certain answers are correct and others are not.
Happy studying,
Michael
#radiology #radres #FOAMrad #FOAMed

[@tommysleczka]

Studying for my second Discipline in MR right now, national exam is in a few days these videos are amazing. I APPRETIATE YOU! going to purchase the extra material right away here. Cheers!

[@fazaltahir4216]

Superb presentation 🎉

[@brightugwueze4512]

Have been waiting for this❤

[@nadeem822]

Thanks for sharing 🙏

[@Imyourrfather]

Thank you for your effort sir🙏🙏.

[@user-mn9jt6uu1i]

Thank you very much for the insightful lecture series especially on Sonography and MRI Principles. you and Dr. Michael Lipton are my favorites youtube tutors. thank you

[@radiologytutorials]

You're very welcome! Glad you're enjoying them 😊

[@ELDHO360]

You are extraordinary 😊😊

[@radiologytutorials]

Thank you!

[@user-xv5zi5ds8n]

Thankyou micheal

[@user-re4cz8gr9u]

Thanks

[@user-hc3fe7zr1e]

Thankyou sir

[@user-qt3ku6yi3q]

Thanku u🎉🎉

[@user-gh9qr5oi9q]

Sir please make dedicated whole talk to merits and demerits of MRI

[@maddalenaiorga937]

Hello Michael, could you please make a video about x-rays Image evaluation explain the exposure contrast, density, sharpness?? I am currently on my MSc program in radiography and quite confused still about this.

[@carlam6669]

I have a very basic question. My understanding is that when the transverse spins of various protons lose phase with each other, the effect is that the received signal drops off to zero because spins cancel each other out (T2 effect). And yet in the phase encoding step, you purposely force a line of protons to become out of phase. Wouldn’t this also cause signal to disappear because of all these spins that are now out of phase?

[@Will67898]

Yes, signal gets lost due to dephasing by the echo gradients. The differences in signal fill up K-Space and enable us to localize in the y plane, as far as i understood his explanation in the first videos.

[@Km1tidjeik]

Thanks a lot❤
Do you have plan to make lecture about CT physics?
I’ve studied x-ray, US and MRI physics with your lecture for my board exam.
And it’s too difficult to study CT physics without you😢

[@mirzawaqas9563]

Same 🥲

[@radiologytutorials]

Really hoping to get the chance to get to CT some time in 2024, so keep your eye out 😊👍

[@gameologist5723]

hello doctor thank you for your great effort, you videos are so helpful. is there expected timetable to end MRI course, since my FRCR physics on march @@radiologytutorials

[@ghazanbadar2441]

Helo sir! Can u guide us about ur question bank. Is it helpful in FRCR exam? What is the format of ur questions?(mcqs or true/false)

[@sohailkohri7269]

❤❤

[@frostbited7]

😍😍😍😍

[@caiyu538]

👍

[@mo2menhosny505]

May I ask how many MRI videos are remaining ?

[@radiologytutorials]

Hi :) there are roughly 5 videos still to be made 👍. Hoping they will be out soon

[@mo2menhosny505]

@@radiologytutorials thank you so much .. appreciate your efforts 🙏🙏