GE Logiq P5 User Manual
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Pediatrics Calculations LOGIQ 5 Basic User Manual 13-3 Direction 2300002-100 Rev. 2 Pediatrics Calculations Overview Pediatrics measurements offer two different types of measurement studies: • Generic. The Generic Calculations study is common to all applications. See ‘Generic Measurements’ for more information. • Pediatrics. • This chapter describes Pediatrics B-Mode measurements. • The Pediatrics M-Mode measurements are common to other applications. See ‘M-Mode Measurements’ for more information. • The Pediatrics Doppler measurements are common to other applications. See ‘Doppler Mode Measurements’ for more information.
Pediatrics 13-4 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 Pediatrics B-Mode Measurements Figure 13-1. Pediatrics B-Mode Measurement Touch Panel The following generic measurements are common to other exam applications: • %Stenosis • Volume • Angle • A/B Ratio See ‘B-Mode Measurements’ for more information.
Pediatrics Calculations LOGIQ 5 Basic User Manual 13-5 Direction 2300002-100 Rev. 2 B-Mode Measurements (continued) Hip Dysplasia MeasurementThe HIP calculation assists in assessing the development of the infant hip. In this calculation, three straight lines are superimposed on the image and aligned with the anatomical features. The two angles are computed, displayed, and can be used by the physician in making a diagnosis. The three lines are: 1 1. The baseline connects the osseous acetabulum convexity to the point where the joint capsule and the perichondrium unite with the iliac bone. 2. The inclination line connects the osseous convexity to labrum acetabulare. 3. The Acetabulum roof line connects the lower edge of the osilium to the osseous convexity. The α (Alpha) angle is the supplement of the angle between 1 and 3. It characterizes the osseous convexity. The β (Beta) angle is the angle between lines 1 and 2. It characterizes the bone supplementing additional roofing by the cartilaginous convexity. Figure 13-2. Hip Dysplasia 1Source: R GRAF, journal of Pediatric Orthopedics, 4: 735- 740(1984) Anatomical Landmarks a. Ilium d. Bony Roof b. Iliac Bone e. Cartilaginous acetabular roof c. Labrum f. Femoral Head
Pediatrics 13-6 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 B-Mode Measurements (continued) Hip Dysplasia Measurement (continued)To make a Hip Dysplasia measurement: MeasureFrom the Touch Panel, select HIP. A horizontal dotted line displays. To place the baseline, move the Trackball. Position the crosshairs edge at the osseous convexity of the ilium. To rotate or change inclination, adjust the Ellipse control or the Hip Orientation knob. SetTo fix the baseline, press Set. The system displays a second dotted line at an angle. To place the line along the inclination line of the osseous convexity to labrum acetabulare, move the Trackball. To rotate or change inclination, adjust the Ellipse control or the Hip Orientation knob. SetTo fix the second measurement line, press Set. The system displays a third dotted line at an angle.
Pediatrics Calculations LOGIQ 5 Basic User Manual 13-7 Direction 2300002-100 Rev. 2 B-Mode Measurements (continued) Hip Dysplasia Measurement (continued) To place the caliper along the acetabular roof line, move the Trackball. To rotate or change inclination, adjust the Ellipse control or the Hip Orientation knob. SetTo fix the third measurement line and complete measurement, press Set. The system displays the hip measurements (α and β) in the Results Window.
Pediatrics 13-8 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 B-Mode Measurements (continued) Alpha HIPThe Alpha HIP measurement measures the angle between the iliac baseline and the bony roof line. To make an Alpha HIP measurement: MeasureFrom the Touch Panel, select Alpha HIP. A horizontal dotted line displays. To place the baseline, move the Trackball. Position the crosshairs edge at the osseous convexity of the ilium. To rotate or change inclination, adjust the Ellipse control or the Hip Orientation knob. SetTo fix the baseline, press Set. The system displays a second dotted line at an angle. To place the caliper along the acetabular roof line, move the Trackball. To rotate or change inclination, adjust the Ellipse control or the Hip Orientation knob. SetTo fix the second measurement line, press Set. The system displays the alpha hip measurement (α) in the Results Window.
Pediatrics Calculations LOGIQ 5 Basic User Manual 13-9 Direction 2300002-100 Rev. 2 B-Mode Measurements (continued) d:D Ratio MeasurementThe d:D Ratio measurement measures the percentage of the femoral head coverage under the bony roof. To make this measurement: MeasureFrom the Touch Panel, select d:D Ratio. A horizontal dotted line displays. Use the Trackball to place the baseline along the ilium. Position the crosshairs edge at the osseous convexity of the ilium. Use the Ellipse control or the Hip Orientation Touch Panel knob to adjust or change inclination. SetPress Set to fix the baseline. The system displays a circle representing the femoral head. Use the Trackball to position the circle. Use the Ellipse control to size the femoral head circumference. SetPress Set to fix the femoral head circumference. The system displays the d:D ratio for the femoral head in the Results Window.
Pediatrics 13-10 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2
LOGIQ 5 Basic User Manual 14-1 Direction 2300002-100 Rev. 2 Chapter 14 Report Generation Describes how to generate reports.
Report Generation 14-2 LOGIQ 5 Basic User Manual Direction 2300002-100 Rev. 2 This feature is not available at this time.