Mindray M5 Exp, Operator'S Manual

Page: 134 / 357

5-54 Image Optimization
Parameter Description
MPR Line
Function: using the lines to show the position information of the other
sections on a section image or 3D image.
Selection: Entire, Partial, Off. Entire means to display the whole line
crossing the section image. Partial means to display part of the line at
both ends of the MPR line.
Colorize/Colorize
Map
Switch on/off colorize map, selection: Off, 1-5.
Quick Rot.
To quick rotation the 3D image.
Selection: 0°, 90°, 180°, 270°.
Reset Ori To reset the volume rotation, shifting and zooming to original status.
Reset All To reset volume to original orientation and original parameters.
Display Format
Image display format: click [Display Format] in the soft menu to set the image display
format, each adjustment cycles you to the next setting. Here,
Select [Single], the system displays one image, which can be a section image or a 3D
image.
Select [Dual], system displays two images left and right. (The left one can be section
A, section B or section C image, and the right one is 3D image.)
Or directly press <Dual> on the control panel.
Select [Quad], system displays four images. (The upper left one is section A image,
the lower left one is sectional C image, the upper right one is section B image, and the
lower right one is 3D image.)
Or directly press <Quad> on the control panel.
Adjust VOI
Function
Adjusting the VOI box size and position is to select the volume data needed to
re-render the 3D image and improve the re-render effect.
Procedures
(1) In image viewing mode, click [Accept VOI] to be “Off”.
(2) Select a desired sectional plane by clicking [Current Window X]. Then VOI on
section A, B and C are adjustable.
(3) Roll the trackball to change the ROI size and position as well as VOI curve, press
the <Set> to toggle among setting the ROI size, position and VOI curve, or, rotate
the multifunction knob to change the position of VOI.
Click [Accept VOI] to be “On” to exit VOI adjusting. In Accept VOI, a green dotted-line
is displayed presenting the position of the section plane, using the trackball to move
the reference point on the MPR to slicing, and the point is the rotation center. Roll the
trackball to view a section image; you can see the corresponding MPR lines are
moving.
Figure a and Figure b below show the 3D image before and after VOI adjusting. VOI
adjusting helps to re-render a better 3D image.