ACUSON Juniper™ ultrasound system Color Doppler Controls Video

Acuson Juniper ultrasound system touch screen Doppler controls. Welcome in this video we will give you an overview of the acuson Juniper system Doppler optimization functions. These controls, located on the touch screen vary depending on the selected Doppler mode. Upon completion of this video, you will be able to. Select image optimization functions for color Doppler. Choose functions that decrease noise and flash on the color image in color, Doppler velocity, or CDV mode. The velocity and direction of flow are represented with different colors for direction and different shades for velocity. To activate CDV, press the C key control. The bottom row of Softkeys displays with functions for selected preset. The order of these controls can be set on the Softkeys configuration page. When you press the C key, a color box region of interest or ROI appears over your 2D image. Press the set key located next to the trackball to change between color ROI position and size functions. The trackball allows you to reposition and resize the ROI. If you are using a linear transducer, you may use the steer control located on the left of the control panel to steer the color box to the desired angle. To adjust the color gain, turn the color control key. Touchscreen functions vary with the real time or frozen image and with the active color Doppler mode functions associated with the Rotary push controls include filter. Smoothing. Priority. Transmit power. Multi Hertz multiple frequency imaging. Scale. Baseline. Flow. Map. Persistence. Andrez speed settings. The order of these controls can be set on the Softkeys configuration page. The bottom row of soft keys become active when selecting the preset. The following features can be found in the middle of the touch screen. Split. 4B. Invert. Velocity tag. Color display and color Doppler energy. CDV controls available with the frozen image include priority. Baseline. Map. Sonni speed velocity tag. Color display invert and. Sonni editing tools. Let's look at the functions of controls unique to color Doppler. There are multiple transducer dependent wall filters available during real time imaging, sometimes referred to as reject. The filter function reduces the amount of noise and clutter by suppressing the lower level signals that are the result of tissue and vessel wall motion. The priority key allows you to adjust the threshold for overlaying color information on the 2D image. The low settings display more of the two D information and the high settings display more of the color information. The res speed function allows you to optimize the color image for changes in flow. The low setting increases the sensitivity to low velocity flow states. This setting lowers the pulse repetition frequency or per F, but increases flash or motion artifacts. The medium setting provides a balance between the flash suppression and maximum sensitivity by using an adaptive wall filter. The high setting optimizes the system for the high arterial flow common to pulse atile vessels and stenotic conditions. Multi Hertz imaging allows you to select the center transmit frequency for the transducer. This frequency displays on the soft key and on the image. Changing the transmit frequency during color imaging allows you to eliminate color aliasing and adjust color sensitivity to eliminate color aliasing and increased penetration. Use a lower frequency to increase spatial resolution and color sensitivity. Use a higher frequency. Pressing the color display key on the touch screen allows you to remove the color overlay on a frozen real time image, dual image or Cindy loop map selects a processing curve. Assigning a velocity or variance range on the real time or frozen image. The velocity tag. Kia signs or tags a single blood flow velocity or a range of blood flow velocities in a color Doppler image. For a single velocity Range, select single on the touch screen. A single line appears and the trackball icon on the monitor allows you to move and set the level. When selecting range 2, lines appear on the color bar, and the trackball displays set high. Choose your upper level. The icon changes to set low push the set key set position appears, so you can adjust your range. Press the set key to return to color imaging. Split displays two real time images in a dual format. The 2D on the left side and color on the right side. This feature differs from dual as the two images are independent of each other. Invert changes the colors used to show flow direction. For example, if the image had blue away an red towards the transducer. Pressing the invert key. Reverses the colors. Increasing or decreasing the scale adjusts the pulse repetition frequency or per F. This function is available in both the pulse wave, an color Doppler velocity modes. Color Doppler Energy or CD displays the amplitude or intensity of blood flow. It is more sensitive in the detection of low velocity vessels. Also known as power Doppler, this mode is more sensitive to motion an flash artifact. You can also use the dual function to display a CD image next to a CD image. You may also image the direction of flow with power Doppler to activate, tap the directional power key. Remember there are no velocity measurements when using directional power Doppler. There are two color Doppler functions unique to echocardiography. Doppler tissue imaging capability, or DTI and Doppler. Tissue energy or DTE which allow measurement of myocardial velocity. Activation is as simple as tapping the DTI DTE key on the touch screen while in an echocardiography preset. This feature helps the clinician locate small myocardial tissue movement to determine if areas of concern are simply stunned or ischemic. In this video you have learned to use the multi hurts imaging function to eliminate or minimize aliasing and increase color sensitivity. Changing the filter setting helps reduce noise on the color image by controlling low level motion. Often seen when imaging vessels. Adjusting the resolution speed setting helps control the flash artifacts. With color Doppler, we now know that transducer movement while imaging with color Doppler energy. We may see a higher instance of flash artifact.

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