FujiFilm VisualSonics Vevo F2 User Manual page 158

PA-Mode
PA-Mode (Photoacoustics mode) is the photoacoustic imaging mode for the Vevo F2 Imaging System.
Photoacoustic imaging works by illuminating tissue with laser light. Tissues then give off ultrasonic waves
proportional to how much of the light was absorbed by the tissue. These ultrasonic waves are then detected
by the transducer to produce an image.
WARNING:
Safety on page 461 and Laser Safety on page 464.
Before You Begin
PA-Mode requires the Vevo LAZR-X laser cart and the following components:
A transducer equipped with a Vevo Fiber Jacket
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A Vevo Optical Fiber
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Before using PA-Mode:
Read all safety instructions listed in Laser Safety on page 464.
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Ensure the test environment is prepared. For more information, refer to Vevo LAZRTight on
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page 429.
Ensure the laser is calibrated. For more information, refer to Laser Calibration on page 190.
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Determine which wavelength range to use and connect the Vevo Optical Fiber to the appropriate port
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on the laser cart. For more information, refer to Connecting Transducers to the Vevo LAZR-X laser
cart on page 423.
Staging and Acquisition States
PA-Mode has a "staging" and an "acquisition" state.
The Staging state is when PA-Mode is selected on the control panel, but before the Start button is pressed.
This mode allows the user to set up desired acquisition features before starting the laser. Once
preparations are complete, press Start to start image acquisition.
The Acquisition state occurs after pressing the Start button on the control panel. Once this happens, the
laser begins firing, and the system begins acquiring image data.
PA-Mode Image Display Interface
This section covers how the Image Display interface looks when in PA-Mode.
Note: For a list of interface elements that appear for all imaging modes, refer to
Image Display on page 36.
Modes
Before using PA-Mode, users must read Vevo F2 Imaging System
Vevo F2 Imaging System User Manual
158