6 - 26 Operator’s Manual
6 Image Acquisition
6.14 RIMT (Real-time Intima-Media Thickness)
RIMT early detects and prevents coronary heart disease, artery vessel from being pathological, and
estimates the therapeutic effects. RIMT detects the changes of the vascular intima in real time, and
monitors and calculates the thickness of the carotid intima automatically.
• RIMT is an option.
• It is merely available to enter RIMT imaging mode in B single window and dual window when
adopting linear probe for carotid exam.
• Do not press the probe after entering RIMT imaging mode when scanning the image in real
time.
Perform the following procedure:
1. Select the probe first. Perform B mode in carotid exam mode. Detect the patient’s carotid in B
mode. Keep the acoustic beam vertical with the anterior and the posterior of the vascular and
make the anterior and the posterior of the intima visible at the carotid stenosis to obtain a
premium image.
2. Tap [RIMT] to activate the function. Use [Side] on the touch screen to select left or right
carotid.
3. Use the trackball/trackpad to locate ROI over the target area. The dotted line of the ROI is in
the middle of the blood vessel. Press <Set> to confirm the position and size of the ROI.
4. Tap [Start Calc] to measure RIMT of left carotid and right carotid. 6 RIMT values (each RIMT
value represents maximum IMT value within one cardiac cycle), RIMT average value
(arithmetic mean value of the 6 RIMT values), SD (standard deviation of the 6 RIMT values)
and ROI length are displayed in the result pane.
– Tap [Accept Result] or press <Set>, the image is frozen. You may save single frame image
and results to the result pane.
– Tap [Cancel Result] to recalculate RIMT. Perform step 4 to reset the RIMT.
5. Tap [Report] on the exam main menu to view the report. Only last acceptable data, including
RIMT on left and right carotid, is in the data sheet.
You can perform:
6 Calculation Results
Window
Displays the calculation results within the current calculation range.
• Dmax: indicates the maximum IVC inner diameter within a
respiratory cycle.
• Dmin: indicates the minimum IVC inner diameter within a
respiratory cycle.
• IVC CI = (Dmax-Dmin)/Dmax
• IVC DI = (Dmax-Dmin)/Dmin
• IVCV = (Dmax-Dmin)/[(Dmax+Dmin)/2]
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