FATE

Before you start scanning


A systematic approach is a prerequisite to successful imaging performed by a novice

Always have the FATE card in front of you or use the posters available during the workshops

Ask yourself – and during the workshop also the rest of the group:
1. Which position – 1, 2, 3 or 4?
2. How should I hold the probe?
3. Where should the orientation marker (OM) be pointing to?
4. What should appear on the screen?

Image missing
Scanning guide available as posters at the workshops – use it to optimise learning.

Scanning procedure


Recall the content of the scanning guide on the previous page

Holding the probe in your right hand:
1. Apply gel without touching the footprint of the probe with the gel dispenser
2. Place the transducer on the chest wall where you expect to get the desired image
3. Move your hand in small circles until you recognize any anatomical structures on the screen
4. Then stop circling and optimize the image in only one plane at a time by means of:
– rotating
– tilting
– sliding
the transducer

Never move in more than one direction at a time
When you are familiar with this scanning procedure proceed to the next topic

Image missing
Figure showing movements in three different spatial directions. The icon at the bottom indicates that movement should only take place in one plane at the time.

Position 1: The subcostal 4-chamber view (S4CH)


The subcostal 4-chamber view is obtained from position 1

In this view these cardiac structures can be visualised:
– Left atrium (LA)
– Right atrium (RA)
– Left ventricle (LV)
– Right ventricle (RV)

Image missing

Position 1: Ultrasound image (S4CH)


The subcostal 4 chamber view shows how the image by convention should appear on the screen

Observe the liver lying “above” the heart, and the base of the heart at the left side of the screen, and the apex of the heart at the right side of the screen

The subcostal 4-chamber view is suitable for a quick qualitative evaluation of:
– Pathology
– Wall thickness
– Chamber dimensions
– Bi-ventricular function

Image missing

Sector angle


The sector angle is important as it affects the frame rate dramatically

A narrow sector angle (width) allows either (1) a higher frame rate (the time required to build the image is reduced by reducing the number of beams for a whole sector) or (2) a better lateral resolution (the line density can be increased).

A higher frame rate increases temporal resolution

A higher line density increases lateral resolution

By using a sector just wide enough to include all relevant details, the capacity of the ultrasound system capacity is best used

Image missing
Different sector angles for an apical 4 chamber view of the heart. The middle image has an appropriate sector, where all relevant parts of the heart can be seen. In the top image the sector angle is too narrow, and in the bottom image the sector angle is too broad.

Time gain compensation (TGC)


TGC is a user controlled selective amplification of signals reflected from particular depths in the tissue

TGC compensates for the depth-dependent attenuation of the ultrasound wave

A typical user control panel is illustrated in the image

Image missing
By fine tuning TGC, optimal image quality can be achieved at all depths of the image.
In the top image TGC is increased in the upper bands resulting in increased (more white) gain in the near field. In the bottom image TGC is increased in the lower bands. The middle image has appropriate TGC.

Summary – Equipment and skills


You are now familiar with the ultrasound system and the probe and how to optimise the ultrasound image

After testing your new knowledge with a few quiz questions, you are ready to start the lessons about the FATE protocol

The questions will prepare you for the final quiz at the end of the course

Click on the quiz in the side menu to start it

Image missing

Full Basic FATE examination

A full Basic FATE examination includes images of the heart and pleura obtained from four different positions, or “windows”, in the thorax

From these positions 6 imaging views can be achieved:
– Position 1: Subcostal 4-chamber view
– Position 2: Apical 4-chamber view
– Position 3: Parasternal views: the long-axis and short-axis view
– Position 4: Pleural views. Right pleura and left pleura

This module will give an overview of these 6 imaging views and how to achieve them

At the end of module 4 (position 1) inferior vena cava (IVC) has been added as a service for those of you who want to learn IVC now

IVC is one of the extended views and therefore a part of Advanced FATE

Image missing
This image shows the FATE positions on the FATE torso and corresponding cardiac positions on a human body

Display of the sector on the screen


The ultrasound image on the screen can be turned upside/down or left/right with user controls

In FATE and adult cardiac ultrasound, the ultrasound image displays the sector with the two radii diverging from the top of the screen

The OI is on the right side of the screen, and the arc of the sector is displayed towards the bottom of the screen

Image missing
The video clip shows the ultrasound sector placed correctly and incorrectly. Remember that the right orientation is with the top of the sector pointing upwards, and the orientation indicator (OI) on the right side of the screen.

ECG


Connect ECG to the patient in order to generate and save echocardiographic loops

Image missing