Aliasing Artifact | Ultrasound Physics Course | Radiology Physics Course #23

High yield radiology physics past paper questions with video answers
Perfect for testing yourself prior to your radiology physics exam 👇
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Aliasing occurs when the pulse repetition frequency is less than twice the doppler shift frequency of the returning echo. This limit is known as the Nyquist limit. In this talk we review how aliasing occurs and what we can do to reduce aliasing in an image. We will review the determinants of pulse repetition frequency and the doppler equation and how these parameters influence the degree of aliasing in a spectral doppler ultrasound waveform.
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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

[@user-mr5ox5ul7v]

It is incredible how easy you make it look with your videos. Thank you for all this, you have been of incredible help for my veterinary radiology pre-board theory exam. Best regards.

[@abdullahahmed139]

Amazing! just amazing! Thank you!

[@MohamedFayed-cg2jq]

There is still a solution for aliasing. We can use 2 sample volumes and use a High PRF doppler.

[@karamhelal1843]

Dr Michael has been waiting his entire life to find an excuse to explain the wheel thing 😂, Awesome lecture 👍

[@radiologytutorials]

Haha! True!

[@kyrahaus2281]

Wow this was superb. Thank you sir

[@deptofradiodiagnosismpsmc]

super sessions, great learning sir please make videos on CT anatomy of liver segments, CT anatomy of lung segments with bronchial anatomy, CT anatomy of deep neck spaces with their content, CT mediastinal anatomy with standard mediastinal classification,

[@radiologytutorials]

Thank you. I have done all of these videos on my channel. You can check them out under the anatomy playlist

[@sandrajackson1169]

Good explanation 🎉

[@radiologytutorials]

Thank you 🙂

[@SamtaniPradeep]

Sir will aliasing artifact will also be seen in color doppler imaging?? Or it will only be seen in spectral doppler imaging??

[@paediatricspotcases5220]

Not cleared exactly for baseline and frequency reduction

[@meghanakareddy5928]

Sir does transducer frequency changing mean switching between high frequency and low frequency transducers ?

[@radiologytutorials]

Exactly 👍🏼

[@sambatsubhankararay5331]

Sir are these series enough for frcr part 1?

[@radiologytutorials]

I’ve had many people say that they were great for FRCR part 1. The detail I am explaining at should be more than sufficient. I always encourage people to use one resource and then Google/use a textbook/notes etc to review areas of uncertainty

[@caiyu538]

👍

[@chazsison]

Did u stop uploading sir😢?

[@radiologytutorials]

Been on holiday for the last week. Just filmed today’s video. Need to edit, render and upload it still. Will be available this evening

[@chazsison]

@@radiologytutorials thank u Doc Michael. Now i feel bad.It seems I pressured you✌🏻

[@radiologytutorials]

It’s all good. Don’t feel bad Chaz! Appreciate all your support watching the videos