Elastography
CAUTION:
It is provided for reference, not for confirming a diagnosis.
Strain Elastography
Strain Elastography is a separately purchased option. Elastography must be
configured to a programmable function before use. These keys can be configured in
Setup/Keys.
Once configured, elastography is invoked by pressing the configured function key. By
default the image goes to a dual display, with the elastography image on the left and a
reference image on the right. Pressing the Dual key will toggle to a display only showing the
elastography image.
Elastography is available for the following transducers: L8-3, L10-5, L14-5w, L14-5sp, L20-5.
Elastography supports three types of strain acquisition. The softkey OLEDs can be used to
choose between these:
•
Relative (normalized) strain: This generally has similar sensitivity to hard and soft tissue.
•
Absolute strain: Strain is displayed without normalization.
•
Cross-correlation: This assesses the quality of the acquisition by comparing
frame-to-frame correlations.
While in Elastography dual display, generic measurements can be done on either image. A
measurement performed over the strain image will also display on the reference B-mode
image.
ARFI (Acoustic Radiation Force Impulse Imaging)
Configuration
ARFI (Acoustic Radiation Force Impulse Imaging) is a separately purchased option. ARFI
must be configured on a programmable function before use. These keys can be configured in
Setup/Keys. Operations are as follows:
4. Press Setup / Keys.
5. Click to select ARFI to the desired key.
6. Click Save to complete the setting.
Once configured, ARFI is invoked by pressing the configured function key.
ARFI is available on the C4-1 transducer using a preset from the Abdominal Exam Category