P25 Series Advanced User Manual June 2019 PDF download

Statement SonoScape Medical Corp. (hereinafter called SonoScape) owns the intellectual property rights to this manual, and also maintains the contents of this manual as confidential information. This manual is a reference for the operation, maintenance and cleaning of this product and does not convey any license under the patent rights of SonoScape, nor the rights of others. This manual contains the information protected by copyrights or patents. Reproduction, amendment or translation of this manual in any manner whatsoever without the written permission of SonoScape is strictly prohibited. All information contained in this manual is believed to be correct. SonoScape shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this manual. SonoScape does not assume any liability arising out of any infringements of patents or other rights of third parties. This manual is based on the maximum configuration and therefore some contents may not apply to your product. This manual is subject to change without prior notice and legal obligation.

Manufacturer’s Responsibility SonoScape is responsible for the effects on safety, reliability and performance of this product, only if all the following requirements are met. ●● All installation operations, expansions, changes, modifications and repairs of this product are conducted by SonoScape authorized personnel. ●● ●●

The use or application of the product or the use of parts or accessories is approved by SonoScape.

●●

The product is used in accordance with the instructions for use.

The electrical installation of the relevant room complies with the applicable national and local requirements.

Documentation SonoScape provides the documentation consisting of various manuals: ●● The basic user manual describes the basic functions and operating procedures of the system. ●●

The advanced user manual provides information about the measurements and calculations available in each mode.

Understand the meanings of the following items clearly before reading this manual. Item

!

Meaning Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, may result in malfunction or damage of the system. Indicates a potentially biological hazardous situation which, if not avoided, may result in disease transmission. NOTE

Indicates precautions or recommendations that should be used in operating the system.

Boldfaced Word

Indicates controls on the control panel, or on-screen objects such as menu items or keys.

Item

Meaning

Click >

Move the cursor to the controls on the display and press the confirm button on the control panel. Select a menu item or a key following the path.

Contact Information Manufacturer: SonoScape Medical Corp. Address: Room 201 & 202, 12th Building, Shenzhen Software Park Phase II, 1 Keji Middle 2nd Road, Yuehai Subdistrict, Nanshan District, Shenzhen, 518057, Guangdong, China Tel: +86-755-26722890 Fax: +86-755-26722850 E-mail: [email protected] Website: www.sonoscape.com

EU Representative: Shanghai International Holding Corp. GmbH (Europe) Address: Eiffestrasse 80, 20537 Hamburg, Germany Tel: +49-40-2513175 Fax: +49-40-255726 E-mail: [email protected]

Contents 1 General Instructions on Measurements�� 1 1.1

Intended Use�� 1

1.2

Measurement Accuracy�� 1

1.3

Measurement Controls�� 2

1.4

Measurement Menu�� 2

1.5

Measured Result Box�� 4

1.6

Measurement Presets�� 4

2 Basic Measurements and Calculations�� 5 2.1

B-Mode Measurements�� 5 2.1.1 Distance Measurements�� 5 2.1.2 Area Measurements�� 8 2.1.3 Volume Measurements�� 12 2.1.4 Angle Measurements�� 13

2.2

M-Mode Measurements�� 15 2.2.1 Distance Measurement�� 15 2.2.2 Slope Measurement�� 15 2.2.3 %Stenosis Distance Measurement�� 16 2.2.4 Distance Ratio Measurement �� 17 2.2.5 Time Measurement�� 17 2.2.6 Heart Rate Measurement�� 18

2.3

Color Flow-Mode Measurements�� 18 2.3.1 Doppler Area Measurement�� 19 2.3.2 Color Flow Measurement�� 19 2.3.3 Flow Velocity Measurement�� 20

2.4

Spectral Doppler-Mode Measurements�� 20 2.4.1 Generic�� 20 2.4.2 Volume Flow�� 27

2.5

Elastography Imaging Measurements�� 28

2.6

Contrast Imaging Measurements�� 28

2.7

3D/4D Imaging Measurements�� 29

3 Vascular Measurements and Calculations�� 31 3.1

2D Mode Measurements�� 31

3.2

M-Mode Measurement�� 35

3.3

Spectral Doppler-Mode Measurements�� 36

4 Obstetrics Measurements and Calculations�� 37 4.1

2D-Mode Measurements�� 37 4.1.1 General Measurements�� 37 4.1.2 Multiple Fetus Measurement�� 39 4.1.3 EFW�� 40 4.1.4 GA and EDD�� 40 4.1.5 AFI�� 41

4.2

M-Mode Measurement�� 41

I

Contents 4.3

Spectral Doppler-Mode Measurements�� 42

5 Gynecology Measurements and Calculations�� 45 5.1

2D-Mode Measurements�� 45 5.1.1 Uterus Measurement�� 45 5.1.2 Uterus Artery Measurement�� 46 5.1.3 Ovary Volume Measurement�� 46 5.1.4 Follicle Measurement�� 46 5.1.5 Fibroid Measurement �� 46

5.2

M-Mode Measurements�� 47

5.3

Spectral Doppler-Mode Measurements�� 48

6 Abdomen Measurements and Calculations�� 49 6.1

2D-Mode Measurements�� 49

6.2

M-Mode Measurements�� 50

6.3

Spectral Doppler-Mode Measurements�� 51

7 Cardiology Measurements and Calculations�� 53 7.1

B-Mode Measurements�� 53 7.1.1 Left Ventricle�� 53 7.1.2 Left Atria Volume�� 57 7.1.3 Right Atria Volume�� 58 7.1.4 Right Ventricle�� 58 7.1.5 Left Atria Diameter/Aortic Root Diameter�� 58 7.1.6 Left/Right Ventricular Outflow Tract Diameter�� 59 7.1.7 Mitral Valve Diameter�� 59 7.1.8 Aortic Valve�� 59 7.1.9 Main Pulmonary Artery Diameter �� 60 7.1.10 Tricuspid Valve Diameter�� 60 7.1.11 Pulmonary Valve Diameter�� 60 7.1.12 Left Ventricle Mass�� 60

7.2

Color Flow-Mode Measurements�� 62

7.3

M-Mode Measurements�� 63 7.3.1 Left Ventricle Evaluation�� 64 7.3.2 TEI Index Calculation�� 67

7.4

Spectral Doppler-Mode Measurements�� 68 7.4.1 Aortic Valve �� 68 7.4.2 Mitral Valve�� 70 7.4.3 Mitral Valve Motion �� 72 7.4.4 Tricuspid Valve �� 73 7.4.5 Pulmonary Valve �� 74 7.4.6 Pulmonary and Hepatic Veins�� 76

8 Small Parts Measurements and Calculations�� 79 8.1

2D-Mode Measurements�� 79

8.2

M-Mode Measurements�� 80

8.3

Spectral Doppler-Mode Measurements�� 81

8.4

Elastography Imaging Measurements�� 81

9 Urology Measurements and Calculations�� 83 9.1

2D-Mode Measurements�� 83

II

Contents 9.2

M-Mode Measurements�� 84

9.3

Spectral-Doppler Mode Measurements�� 85

10 Pediatrics Measurements and Calculations��87 10.1 Hip Joint Angle�� 87 10.1.1 2D-Semi Auto�� 87 10.1.2 2D-3Dist�� 88 10.2 d-D Ratio�� 88

11 Measurement Reports��89 11.1 Reviewing the Report�� 89 11.1.1 Reviewing the Current Report�� 89 11.1.2 Reviewing an Archived Report�� 90 11.2 Obstetrical Reports�� 91 11.2.1 Fetal Growth Curves�� 91 11.2.2 Anatomical Survey�� 91 11.2.3 Fetus Compare�� 92 11.2.4 Anatomical Survey�� 93 11.3 Previewing and Printing the Report�� 93 11.3.1 General/Application-Specific Measurement Report�� 93 11.3.2 DICOM Structured Report�� 94

Appendix Clinical Measurement and Calculation Item��95

III

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1

General Instructions on Measurements

The ultrasound system can assist you with the diagnostic information for clinical diagnostic purposes provided by the measurement and calculation packages. The measurement display varies with the exam types and the imaging modes.

1.1

Intended Use The SonoScape P20 system is a general-purpose ultrasonic imaging instrument intended for use by a qualified physician for evaluation of Fetal, Abdominal, Pediatric, Small Organ (breast, testes, thyroid), Cephalic (neonatal and adult), Transrectal, Trans-vaginal, Peripheral Vascular, Cerebral Vascular, Musculo-skeletal (Conventional and Superficial), Cardiac (pediatric and adult), Trans-esoph.(Cardiac), Laparoscopic, OB/Gyn and Urology. Contraindication: The ultrasound system is not intended for ophthalmic use or any use causing the acoustic beam to pass through the eye.

! 1.2

Precautions must be considered in the use of any application. Otherwise, it may result in system damage or serious injury.

Measurement Accuracy The measurements provided by the system do not define a specific physiologic or anatomic parameter. Rather, what is provided is a measurement of a physical property such as distance or velocity for evaluation by the clinician. NOTE: For each of the measurements available on the system, the measurement accuracy is only valid in the ranges shown below. The the following table is provided on the basis of actual system tests without acoustic beam considerations.

Table 1-1 Measurement Accuracy Parameter

Value Range

Error Range

Display depth

Max. 40.0cm

±3%

Distance

0-31.0cm

±3%

Area

Max. ≥855cm2

±7%

Angle

0.04-179.31º

±3%

Circumference

200cm

±3%

Volume

Max. 25000cm3

±10%

M-Mode time

2,4,6,8s

±1%

Heart Rate

8-1000 beats/min

±3%

Velocity(PW)

0.04-2940 cm/s

Angle≤60°, ≤5%

Velocity(CW)

0.12-3795 cm/s

Angle≤60°, ≤5%

1

1 General Instructions on Measurements

1.3

Parameter

Value Range

Error Range

Strain Ratio

/

Depth≤60cm, ≤20%

Measurement Controls OB

1 D: 22.5 mm 2 D: 24.7 mm

S

Collection Distance Area Volume Angle

1 2

Measurement 2Ponit Length Trace 2 Line Ratio (D) %Sten (D) Exit 0

249

498

Figure 1-1 Measurement and Calculation Screen You should be familiar with the following keys before performing a measurement. These keys on the control panel are described as follows: Key

Description

Calc

Press to activate the application-specific measurement and calculation features.

Trackball

Use to select an item on the screen. Or, use to move the cursor when performing a measurement.

Confirm Key

Press to confirm the operation. Or, press to locate the cursor when performing a measurement.

Clear

Press to clear all measurement markers and calculation results from the screen.

Caliper

Press to activate the basic measurement and calculation features. ●● Press it to perform the distance measurement in the 2D (B/CFM/DPI/TDI)/M/3D/4D mode. ●● Or, press it to activate a velocity measurement in the PW/CW mode.

Update

●● Press it to switch between measurement markers when performing the distance or ellipse measurement. ●● Press it to undo the trace when performing the trace measurement.

Report

1.4

Press to preview the measurement report.

Measurement Menu Basic measurements and application-specific measurements are provided by the system.

2

Advanced User Manual

1 General Instructions on Measurements ●● Press the Caliper key on the control panel to display the basic measurement menu on the monitor and the touch screen respectively. ●● Press the Calc key on the control panel to display the application-specific measurement menu on the monitor and the touch screen respectively. The Vascular Measurement menu (as shown in Figure 1-2) is taken as an example in the following description. You can operate the measurement menu by using the following two ways, ●● Use the trackball to move the cursor to the desired measurement item on the monitor and press the confirm key to confirm. ●● Tap a desired measurement item on the touch screen to start the measurement. NOTE: Changes about the measurement menu displayed on the monitor and the touch screen are stayed synchronized when performing a measurement. Therefore, only operations performed on the touch screen are detailed in the following chapters. Applications

Vascular Applications General OB SMP GYN Vascular Abdomen Cardiac Urology Pediatrics

Exam Type

Measurement Category

Category Carotid UE Art UE Venous LE Art LE Venous

OB

SMP

GYN

Cardiac

Urology

Pediatrics

Carotid

UE Art

UE Venous

Return

Exit

Vascular

Abdomen

LE Art

LE Venous

TCD

TCD Exit

Carotid Collection Lt Subclav A Lt CCA Lt Bulb Lt ICA Lt ECA Lt Vertebral A Measurement Vessel Diam Vessel Area %Sten(D) %Sten(A) IMT Post IMT Ant Exit

Vascular

Left >>

Measurement Collection

Lt Subclav A

Applicat

Exit

Lt CCA

Lt Bulb

Lt ICA

Lt ECA

Vessel Area

%Sten(D)

%Sten(A)

IMT Post

Side Left

Position --

Delete Last

Lt Vertebral A Measurement Item

Vessel Diam

IMT Ant

Function Button

Figure 1-2 Measurement Menu The measurement menu consists of five parts, including exam type, measurement category, measurement collection, measurement item and function button. ●● Exam Type Exam types are listed under Applications. Click on the monitor or tap Applicat on the touch screen to choose the desired exam type.

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1 General Instructions on Measurements ●● Measurement Category and Collection Measurement categories and collections are listed under the desired exam type. Each measurement category includes one or more measurement collections. ●● Measurement Item Click a measurement item to start the relevant measurement and calculation. The number displayed on the measurement item indicates the measurement times you performed during the application-specific measurement. ●● Function Button −− Click Left on the monitor or tap Side Left on the touch screen to select the measurement part. besides the measurement collection > Dist, Mid or Prox on the monitor, or tap Position on the −− Choose touch screen to select the measurement position. besides the measurement item > or tap 2D-Ellipse, 2D-Dist or etc. on the touch screen to select −− Choose the measurement method. −− Click >> to turn the current menu to the next page. −− Click Delete Last on the touch screen to remove the last measurement marker and measurement result from the screen, meanwhile the measurement result will be removed from the measurement report. This chapter only provides a general instruction on measurement, and performances of the relevant measurement items are described in the following chapters.

1.5

Measured Result Box The measurement results appears in the result box after you perform the measurement. ●● Moving a Result In the frozen mode, press the Update key on the control panel, move the result box to a proper position by using the trackball, and press the confirm key on the control panel. ●● Deleting a Result Press the Del key on the key panel or tap Delete Last on the touch screen to remove the last measurement marker and measurement result from the screen, but the measurement result in the report will be kept. ●● Clearing All Results Press the Clear key on the control panel to remove all measurement markers and results from the screen. However, the results still exist in the measurement report.

1.6

Measurement Presets You should make the relevant measurement settings on System Setting > Measure menu. For details, refer to the basic user manual. ●● Specify relevant measurement parameters and result positions ●● Specify the measurement items of the auto trace and manual trace in spectral Doppler mode ●● Select the coefficient of the thyroid volume formula ●● Define the shortcut keys for obstetric, gynecological or cardiac measurements ●● Specify the measurement formula for obstetric measurements ●● Add or delete measurement collections and items, and reorder the list of them NOTE: Measurement presets should be made before you perform a measurement. Otherwise, they will not take effect.

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2

Basic Measurements and Calculations

Basic measurements and calculations mainly refer to the mapping of the ultrasonic image area, the operation of measurement menu, the operation of the measured result box. Generally, basic measured results are not saved in the measurement report, but application-specific measurements are composed of the basic measurements. Basic measurement items and units varies with exam types. The obstetrics measurement is taken as an example in this chapter. Basic measurements consist of measurement menus in four modes: B mode, M mode, color flow mode and Spectral Doppler mode. Some measurements performed in the Color Flow mode are performed the same as they are in the B mode. Therefore, operations related to these measurements in the color flow mode are not detailed in this chapter.

2.1

B-Mode Measurements The basic measurement menu in the B mode is shown in the following figure. Applicat

OB

Distance

Area

2 Line

Volume

Angle

2Point

Length Trace

Ratio (D)

%Sten (D)

Exit

Delete Last

Figure 2-1 Basic Measurement Menu in the B Mode

2.1.1

Distance Measurements Distance measurements in the B mode includes two-point measurement, length trace measurement, two-line measurement, distance ratio measurement and %stenosis distance measurement.

2.1.1.1

Two-Point Measurement Two-point measurement in the B mode is used to measure the distance between two points on the image. Follow the following steps to perform the measurement.

5

2 Basic Measurements and Calculations 1. Press the Caliper key on the control panel and the system starts the two-point measurement by default, and a marker appears on the screen. 2. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 3. Move the second marker to the desired position. You can press the Update key on the control panel to activate the fixed marker. 4. Press the confirm key to complete the measurement. 5. Repeat steps 2-4 to perform a new distance measurement. The measurement result is displayed as follows: D: 19.9 mm

2.1.1.2

Length Trace Measurement Length trace measurement in the B mode is used to measure the distance between two points on the image by using the trackball to trace a line along the target object. Follow the following steps to perform the measurement.

1. Press the Caliper key on the control panel. 2. Tap Length Trace on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker along the target object by using the trackball. You can press the Update key on the control panel to undo the trace. 5. Press the confirm key to complete the measurement. The measurement result is displayed as follows: L: 30.5 mm

2.1.1.3

Two-Line Meaurement Two-line measurement in the B mode is used to measure the distance between two lines on the image. Follow the following steps to perform the measurement. 1

1

1. Press the Caliper key on the control panel 2. Tap 2 Line and a marker appears on the screen.

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Advanced User Manual

2 Basic Measurements and Calculations 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm the first point of the first line and a second marker appears on the screen. 4. Move the second marker to the desired position to position the second point of the first line. You can press the Update key on the control panel to activate the fixed point. 5. Press the confirm key to confirm the first line and the third marker appears on the screen. 6. Move the marker to the desired position by using the trackball and press the confirm key to confirm the second line. 7. Repeat steps 3-6 to perform a new measurement. The measurement result is displayed as follows: D: 4.84 mm

2.1.1.4

Distance Ratio Measurement The distance ratio measurement in the B mode is used to measure two single distances, and calculate their ratio. Follow the following steps to perform the measurement. 1. Press the Caliper key on the control panel. 2. Tap Ratio (D) on the touch screen and a marker appears on the screen. 3. Move the trackball to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker to the desired position and press the confirm key to complete the first distance measurement. 5. Repeat steps 3-4 to perform the second distance measurement, and the system automatically calculates the ratio by using the following formula. Calculation Item

Formula

Ratio

Ratio=D1/D2

Where, ●● D1 is the first distance. ●● D2 is the second distance. The measurement results are displayed as follows: D1: 15.1 mm D2: 13.3 mm D1/D2: 1.14

2.1.1.5

%Stenosis Distance %Stenosis distance measurement in the B mode is used to measure the outer and inner distances and the Stenosis%. Follow the following steps to perform the measurement. 1. Press the Caliper key on the control panel. 2. Tap %Sten (D) on the touch screen and a marker appears on the screen. 3. Move the trackball to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker to the desired position and press the confirm key to complete the outer distance measurement.

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2 Basic Measurements and Calculations 5. Repeat steps 3-4 to perform the inner distance measurement, and the system automatically calculates the Stenosis% by using the following formula. Calculation Item

Formula

%Sten

%Sten=|D1-D2|/Max(D1, D2)

Where, ●● D1 is the outer distance of the stenosis. ●● D2 is the inner distance of the stenosis. The measurement results are displayed as follows: D1: 22.8 mm D2: 17.2 mm %Sten: 24.68 %

2.1.2

Area Measurements Area measurements in the B mode include trace area measurement, point area measurement, ellipse area measurement, area ratio measurement and %stenosis area measurement.

2.1.2.1

Trace Area Measurement The trace area measurement in the B mode is used to measure circumference and area by operating the trackball along a blocked area on the image. Follow the following steps to perform the measurement.

1. Press the Caliper key on the control panel. 2. Tap Area key on the touch panel, the system starts the trace area measurement by default, and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker along the target object by using the trackball. You can press the Update key on the control panel to undo the trace. 5. Press the confirm key to complete the measurement. The measurement results are displayed as follows: C: 28.5 mm A: 0.36 cm2

2.1.2.2

Point Area Measurement The point area measurement in the B mode is used to measure circumference and area by positioning the points along a blocked area on the image. Follow the following steps to perform the measurement.

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1. Press the Caliper key on the control panel. 2. Tap Area > Point and a marker appears on the screen. 3. Move the marker to the desired point by using the trackball, press the confirm key on the control panel to confirm the starting point and a second marker appears on the screen. 4. Move the second marker to the desired point along the target object by using the trackball and press the confirm key to confirm it. 5. Repeat step 4 to position more points. You can press the Update key on the control panel to delete the last point. 6. Press the confirm key to complete the measurement. The measurement results are displayed as follows: C: 28.5 mm A: 0.36 cm2

2.1.2.3

Ellipse Area Measurement The ellipse area measurement in the B mode is used to measure the circumference and area of a blocked area on the image Follow the following steps to perform the measurement.

1. Press the Caliper key on the control panel. 2. Tap Area > Ellipse on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker along the target object by using the trackball. 5. Move the second marker to the desired position, and press the confirm key to confirm. The two points fixed above define one axis of the ellipse to be measured. You can press the Update key on the control panel to adjust the fixed points. 6. Adjust the other axis of the ellipse by using the trackball. You can press the Update key to position the ellipse. 7. Press the confirm key to complete the measurement, and the system automatically calculates the circumference and area by using the following formula.

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2 Basic Measurements and Calculations

Calculation Item

Formula

C

C=π

A

A = (π/4) × D1 × D2

Where, ●● D1 is the first axis distance of ellipse. ●● D2 is the second axis distance of ellipse. The measurement results are displayed as follows: D1: 10.6 mm D2: 21.6 mm

2.1.2.4

C:

44.3 mm

A:

1.80 cm²

Area Ratio Measurement The area ratio measurement in the B mode is used to measure two ellipse areas, and calculate their ratio. Follow the following steps to perform the measurement. 1. Press the Caliper key on the control panel. 2. Tap Area > A1/A2 on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker to the desired position, and press the confirm key to confirm. The two points fixed above define one axis of the ellipse to be measured. You can press the Update key on the control panel to adjust the fixed points. 5. Adjust the other axis of the ellipse by using the trackball. You can press the Update key to position the ellipse. 6. Press the confirm key to complete the first area measurement. 7. Repeat steps 3-6 to perform the second area measurement and the system automatically calculates the ratio by using the following formula. Calculation Item

Formula

A1

A1 = (π/4) × D11 × D12

A2

A2 = (π/4) × D21 × D22

A1/A2

A1/A2 = A1/A2

Where, ●● D11 is the first axis distance of the first ellipse. ●● D12 is the second axis distance of the first ellipse. ●● D21 is the first axis distance of the second ellipse. ●● D22 is the second axis distance of the second ellipse. The measurement results are displayed as follows:

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2 Basic Measurements and Calculations A1: 0.90 cm2 A2: 0.57 cm2 A1/A2: 1.57

2.1.2.5

%Stenosis Area %Stenosis area measurement in the B mode is used to measure inner and outer areas and the %Stenosis area. Ellipse and trace methods are provided for this measurement.

■

Ellipse Method Follow the following steps to perform the measurement. 1. Press the Caliper key on the control panel. 2. Tap Area > %Sten (A) > 2D-Dbl. Ellipse on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker to the desired position, and press the confirm key to confirm. The two points fixed above define one axis of the ellipse to be measured. You can press the Update key on the control panel to adjust the fixed points. 5. Adjust the other axis of the ellipse by using the trackball. You can press the Update key to position the ellipse. 6. Press the confirm key to complete the outer area measurement. 7. Repeat steps 3-6 to perform the inner area measurement and the system automatically calculates the %Stenosis area by using the following formula. Calculation Item

Formula

A1

A1 = (π/4) × D11 × D12

A2

A2 = (π/4) × D21 × D22

%Sten

%Sten = |A1 - A2|/Max(A1,A2)

Where, ●● D11 is the first axis distance of the first ellipse. ●● D12 is the second axis distance of the first ellipse. ●● D21 is the first axis distance of the second ellipse. ●● D22 is the second axis distance of the second ellipse. The measurement results are displayed as follows: A1: 0.76 cm2 A2: 0.72 cm2 %Sten: 4.80 %

■

Trace Method Follow the following steps to perform the measurement. 1. Press the Caliper key on the control panel. 2. Tap Area > %Sten(A) > 2D-Dbl. Trace on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen.

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2 Basic Measurements and Calculations 4. Move the second marker along the target object by using the trackball. You can press the Update key on the control panel to undo the trace. 5. Press the confirm key to complete the outer area measurement. 6. Repeat steps 3-5 to perform the inner area measurement and the system automatically calculates the %Stenosis area. The measurement results are displayed as follows: A1: 0.27 cm2 A2: 0.16 cm2 %Sten: 38.22 %

2.1.3

Volume Measurements Volume measurements in the B mode include three-distance measurement and ellipse+distance measurement.

2.1.3.1

Three-Distance Measurement Three-distance measurement in B mode is used to measure the volume of a cuboid shaped object by measuring the length, height and width. Follow the following steps to perform the measurement. 1. Press the Caliper key on the control panel. 2. Tap Volume on the touch screen, the system starts the three-distance measurement by default, and a marker appears on the screen. 3. Perform two distance measurements for the length and the width. 4. Rescan an image which is perpendicular to the previous image. 5. Perform a distance measurement for the height and the system automatically calculates the volume by using the following formula. Calculation Item

Formula

V

V = (1/6) × π × D1 × D2 × D3

Where, ●● D1 is length. ●● D2 is width. ●● D3 is height. The measurement results are displayed as follows: D1: 6.9 mm D2: 9.7 mm D3: 10.5 mm V:

2.1.3.2

0.37 cm³

Ellipse+Distance Measurement Ellipse+Distance measurement in the B mode is used to measure the volume of an egg shaped object. Follow the following steps to perform the measurement.

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1. Press the Caliper key on the control panel. 2. Tap Volume > Ellipse+Dist on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key on the control panel to confirm, and a second marker appears on the screen. 4. Move the second marker to the desired position, and press the confirm key to confirm. The two points fixed above define one axis of the ellipse. You can press the Update key on the control panel to adjust the fixed points. 5. Adjust the other axis of the ellipse by using the trackball. You can press the Update key to adjust the position of the ellipse. 6. Press the confirm key to confirm. 7. Rescan an image that is perpendicular to the previous image. 8. Perform a distance measurement for the height. The system automatically calculates the result by using the following formula. Calculation Item

Formula

V

V= (1/6) × π × D1 × D2 × D3

Where, ●● D1 is the first axis distance of ellipse. ●● D2 is the second axis distance of ellipse. ●● D3 is height of the object. The measurement results are displayed as follows: D1: 11.3 mm D2: 12.4 mm D3: 10.5 mm V:

2.1.4

0.78 cm³

Angle Measurements Angle measurements in the B mode include three-point angle measurement and two-line angle measurement.

2.1.4.1

Three-Point Angle Measurement Three-point angle measurement in the B mode is used to measure the angle by setting three points on two intersected planes. The range of this angle is 0°-180°. Follow the following steps to perform the measurement.

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2 Basic Measurements and Calculations

1. Press the Caliper key on the control panel. 2. Tap Angle on the touch screen, the system starts the three-point angle measurement by default, and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key to confirm and a second marker appears on the screen. 4. Move the second marker to the desired position by using the trackball, press the confirm key to confirm and a third marker appears on the screen. 5. Move the third marker to the desired position by using the trackball, press the confirm key to complete the measurement. The system automatically calculates the angle. The measurement result is displayed as follows: Angle: 37.01o

2.1.4.2

Two-Line Angle Measurement Two-line angle measurement in the B mode is used to measure the angle between two lines on two intersected planes. The range of the angle is 0°-180°. Follow the following steps to perform the measurement.

1. Press the Caliper key on the control panel. 2. Tap Angle > 2Line on the touch screen and a marker appears on the screen. 3. Move the marker to the desired position by using the trackball, press the confirm key to confirm and a second marker appears on the screen. 4. Move the second marker to the desired points. You can press the Update key on the control panel to activate the fixed marker. 5. Press the confirm key to confirm the first line. 6. Repeat steps 3-5 to confirm the second line and the system automatically calculates the angle. The measurement result is displayed as follows: Angle: 37.01o

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Advanced User Manual