GE Logiq P5 User Manual
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Generic Measurements LOGIQ 5 Basic User Manual 7-91 Direction 2300002-100 Rev. 2 Max Pressure Gradient (PG) To measure Max PG: 1. From the Doppler Generic Touch Panel, select Max PG. The system displays an active caliper with vertical and horizontal dotted lines. 2. To position the caliper at the first pressure gradient point, move the Trackball. 3. To fix the measure point, press Set. The system displays a second active caliper. 4. To position the second caliper at second pressure gradient point, move the Trackball. 5. To complete the measurement, press Set. The system displays the two V max measurements and the Max PG in the Results Window. Set the first caliper on V max and the second on Vd. Automatic Calculation of Max PGWhen you select Max PG, if you previously measured and calculated velocity in Doppler Mode, the system automatically calculates Max PG from the V max and Vd measurements taken for velocity.
General Measurements and Calculations 7-92 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Mean Pressure Gradient (PG) To measure Mean PG (Mean Pressure Gradient): 1. From the Doppler Generic Touch Panel, select Max PG. The system displays a trace caliper. 2. To position the caliper at the beginning of the waveform (V max), move the Trackball. 3. To fix the start point, press Set. The system displays a second active caliper. 4. To trace the waveform from V max to Vd move the Trackball. 5. To complete the measurement, press Set. The system displays TAMAX and Mean PG in the Results Window. If Trace Auto is selected, the waveform is automatically traced after the second caliper is fixed. If Trace Auto is not selected, manually trace the desired portion of the waveform. Automatic Calculation of Mean PGIf velocity was previously measured and calculated in Doppler Mode, Mean PG is calculated from the velocity value when Mean PG is first selected in the Touch Panel. The waveform is automatically traced. Velocity and Mean PG are also displayed on the screen. If Trace Auto is off, the Auto Trace function is off and traces can be performed manually.
Generic Measurements LOGIQ 5 Basic User Manual 7-93 Direction 2300002-100 Rev. 2 Heart Rate To measure heart rate, See ‘Heart Rate’ for more information. or select any of the following measurements. SV Diam (Stroke Volume Diameter)To measure SV Diam: 1. From the Doppler Generic Touch Panel, select the SV folder. 2. Select SV Diam. SV TAMEAN (Stroke Volume TAMEAN)To measure SV TAMEAN: 1. From the Doppler Generic Touch Panel, select the SV folder. 2. Select SV TAMEAN. CO HR (Cardiac Output Heart Rate)To measure CO HR: 1. From the Doppler Generic Touch Panel, select the SV folder. 2. Select CO HR.
General Measurements and Calculations 7-94 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Helpful hints HINTSThe following hints can help when making a measurement • If you press P1 while making a measurement, the system completes the measurement and sends the data to the worksheet (unless the VCR is assigned to the P1 key). • Prior to making measurements, use the Cine function, if necessary, to display the best image. • As you take measurements, each measurement is given a sequential number on the display and in the Results Window. Nine measurements can be displayed in the Results Window at one time. • Once the Results Window has nine measurements, if you make any further measurements, the system erases the top (first) measurement and adds the new measurement last (first in, first out). • While you are taking a measurement, the value in the Results Window updates until you complete the measurement.
LOGIQ 5 Basic User Manual 8-1 Direction 2300002-100 Rev. 2 Chapter 8 Abdomen and Small Parts Describes how to perform Abdomen and Small Parts measurements and calculations.
Abdomen and Small Parts 8-2 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Abdomen/Small Parts Exam Preparation Introduction Measurements and calculations derived from ultrasound images are intended to supplement other clinical procedures available to the attending physician. The accuracy of measurements is not only determined by the system accuracy, but also by use of proper medical protocols by the user. When appropriate, be sure to note any protocols associated with a particular measurement or calculation. Formulas and databases used within the system software that are associated with specific investigators are so noted. Be sure to refer to the original article describing the investigators recommended clinical procedures. Calculation formulas are available in the Advanced Reference Manual. General Guidelines New Patient information must be entered before beginning an exam. See ‘Beginning a New Patient’ for more information. Any measurement can be repeated by selecting that measurement again from the Touch Panel Menu.
Abdomen LOGIQ 5 Basic User Manual 8-3 Direction 2300002-100 Rev. 2 Abdomen Introduction Abdominal measurements offer a few different types of measurement studies: Figure 8-1. Abdomen Exam Category Touch Panel • Generic–Common to all applications. See ‘Generic Measurements’ for more information. • Abdomen • Renal Artery 1. Press Exam Calcs. The Vascular exam category allows you to choose from the displayed studies. 2. To select another study, press the desired study folder.
Abdomen and Small Parts 8-4 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 B-Mode Measurements The following measurements are located in the Exam Calcs tab for the Abdomen exam category. Some measurements are only available in certain Exam Calcs. Those specific measurements (splenic length, splenic width, splenic height, Aorta Diameter, and Renal Length) are listed on the following pages. In B-Mode, the Generic Exam Calcs for Abdomen includes the following measurements: • % Stenosis • Volume • Angle • A/B Ratio Figure 8-2. Generic Calculations B-Mode Touch Panel See ‘B-Mode Measurements’ for more information.
Abdomen LOGIQ 5 Basic User Manual 8-5 Direction 2300002-100 Rev. 2 Splenic length, width, and height These measurements are found in the Abdomen Exam Calcs tab. Each of these is a standard distance measurement. Length is typically measured in the sagittal plane. Width and height are measured in the axial plane. To measure splenic length, width, or height: 1. Scan the patient in the appropriate scan plane. 2. Select the Splenic folder, then select Splenic L, Splenic W, or Splenic H. An active caliper displays. 3. Perform a standard distance measurement: a. To position the active caliper at the start point, move the Trackball. b. To fix the start point, press Set. The system fixes the first caliper and displays a second active caliper. c. To position the second active caliper at the end point, move the Trackball. A dotted line connects the measurement points. d. To complete the measurement, press Set. The system displays the distance value in the Results Window. 4. To make the second and third distance measurement, repeat steps 2–3. After you complete the third distance measurement, the system displays the splenic volume in the Results Window.
Abdomen and Small Parts 8-6 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Aorta Diameter This measurement is found in the Abdomen Exam Calcs tab. To measure aorta diameter, make one distance measurement: 1. Select Aorta Diameter; an active caliper displays. 2. To position the active caliper at the start point, move the Trackball. 3. To fix the start point, press Set. The system fixes the first caliper and displays a second active caliper. 4. To position the second active caliper at the end point, move the Trackball. A dotted line connects the measurement points. 5. To complete the measurement, press Set. The system displays the aorta diameter in the Results Window. Renal Length This measurement is found in the Renal Artery Exam Calcs tab. To measure renal length, make one distance measurement: 1. Select Renal Length; an active caliper displays. 2. To position the active caliper at the start point, move the Trackball. 3. To fix the start point, press Set. The system fixes the first caliper and displays a second active caliper. 4. To position the second active caliper at the end point, move the Trackball. A dotted line connects the measurement points. 5. To complete the measurement, press Set. The system displays the renal length in the Results Window.