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Learning Ultrasound Physics, Doppler, and Artifacts doesn’t have to be Terrible!

Learn Ultrasound Physics in a Practical, Relevant, and Clinically USEFUL way.

New Blog Post! 👉🔗Pocus101.com/Physics

#medtweetorial👇(1/20)
(2/20) Ultrasound machines create images using the Piezoelectric Effect

👉🔗Pocus101.com/Physics
(3/20) Here are the main Ultrasound values and trends you need to understand ultrasound physics

👉🔗Pocus101.com/Physics
(4/20) Frequency = speed of sound/wavelength

High frequency probes have shorter wavelengths.
Lower frequency probes have longer wavelengths.

👉🔗Pocus101.com/Physics
(5/20) How ultrasound probe frequency relates to resolution versus penetration

Low frequency probe: better penetration, lower resolution
High frequency probe: high resolution, low penetration

👉🔗Pocus101.com/Physics
(6/20) Ultrasound REFLECTION occurs because of large differences in Impedance between two tissues. This is the physics that causes A-lines in Lung Ultrasound

👉🔗Pocus101.com/Physics
(7/20) Ultrasound REFRACTION occurs because of slight differences in impedance between two tissues.

👉🔗Pocus101.com/Physics
(8/20) Attenuation is the loss and absorption of ultrasound energy through a medium

👉🔗Pocus101.com/Physics
(9/20) Doppler is EASY!
Learn how to use the Doppler Shift equation to help you with your Doppler Settings

👉🔗Pocus101.com/Physics
(10/20) Learn about the “BART” mnemonic for Color Doppler: Blue AWAY, Red TOWARDS

👉🔗Pocus101.com/Physics
(11/20) Don’t make Doppler hard. Learn about the concepts of how Pulse Wave, Continuous Wave, and Tissue Doppler ALL work.

👉🔗Pocus101.com/Physics
(12/20) Learn the Relevant Ultrasound Artifacts!

👉🔗Pocus101.com/Physics

• Mirror Image Artifact
• Acoustic Shadowing
• Posterior Acoustic Enhancement
• Edge Shadowing Artifact
• Reverberation Artifact
• Comet Tail Artifact
• Ring Down Artifact
• Side Lobe Artifact
(13/20) Mirror Image Artifact. Usually seen in right or left upper quadrant but can also been seen on cardiac views!

👉🔗Pocus101.com/Physics
(14/20) Acoustic Shadowing Artifact

👉🔗Pocus101.com/Physics
(15/20) Posterior Acoustic Enhancement

👉🔗Pocus101.com/Physics
(16/20) Edge Shadowing Artifact

👉🔗Pocus101.com/Physics
(17/20) Reverberation Artifact

👉🔗Pocus101.com/Physics
(18/20) Comet Tail Artifact.

Comet tail and ring down artifacts are not the same. Learn the differences:👉🔗Pocus101.com/Physics
(19/20) Ring Down Artifact (B-lines)

👉🔗Pocus101.com/Physics
(20/20) Side Lobe Artifact

👉🔗Pocus101.com/Physics
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POCUS 101
@Pocus101
Learning Diastolic Dysfunction can seem Overwhelming! But what if ANYONE could Learn/Understand #Diastology using a Simple "PUSH and PULL" Analogy?

New Blog Post! Step By Step #POCUS Guide, PDF Pocket Card, & Calculator.
👉🔗pocus101.com/diastology

#medtweetorial👇(1/18)
(2/18) Learning diastolic dysfunction doesn’t have to be hard. In this Post, we will go over the TWO main findings: Mitral Inflow and Tissue Doppler Measurements.

Download the summary Pocket Card PDF:
👉🔗pocus101.com/diastology
(3/18) Mitral Inflow measures BLOOD coming into the LV during diastolic filling (E and A waves).

Here are some Pulse Wave Doppler tips:
1. Place the sample gate at mitral valve tips
2. Bring the baseline down
3. Set Scale to about 120cm/s

👉🔗pocus101.com/diastology
Read 18 tweets
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POCUS 101
@Pocus101
Stop KILLING Your Patients with Fluid! Learn how to avoid Fluid Overload with Venous Congestion Evaluation using #POCUS

New BLOG POST on the #VExUS Protocol! Step By Step Guide, Downloadable PDF Pocket Guide, & Calculator
👉🔗pocus101.com/vexus

#medtweetorial👇(1/10)
(2/10) It’s not just about the IVC it’s about what is affected beyond the IVC. Don’t forget the Liver, Gut, and Kidneys.

Venous Congestion in these organs can lead to significant comorbidity. Download the PDF: 👉🔗pocus101.com/vexus
(3/10) Step 1: Look at the IVC if < 2cm then Grade 0, If > 2cm proceed to the next steps. 🔗pocus101.com/vexus
Read 12 tweets
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POCUS 101
@Pocus101
#COVID19 Damages So Many Organs at 3 Different Stages/Time Points!

New Post on Multiorgan #POCUS Approach with ED/Outpatient and Inpatient Algorithms. #tweetorial #medtweetorial👇 (1/6)

pocus101.com/multiorgan-poc…

#POCUSforCOVID #cardiotwitter ImageImageImage
1) Knowing the 3 Stages #COVID19 can help figure out when to look for specific diseases during the admission process

Stage 1: Constitutional symptoms
Stage 2: Pulmonary Complications
Stage 3: Cardiac/Thromboembolic Complications

Figure by Akhmerov 2020
pocus101.com/multiorgan-poc… Image
2) ED/Outpatient Setting should initially focus on Stage 2 (Pulmonary Complications) on #POCUS but still screen for Stage 3 Cardiovascular Complications Using Cardiac/DVT ultrasound.
pocus101.com/multiorgan-poc… Image
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