MINDRAY

Ultrasound Diagnostic Imaging Systems

DP6900 and DP6800 Operators Manual Advanced Volume CE v1.1

Operators Manual

81 Pages

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File Name: MINDRAY - DP6900 and DP6800 Operators Manual Advanced Volume CE v1.1.pdf

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Page 1

DP-6900/DP-6800 Digital Ultrasonic Diagnostic Imaging System Operator’s Manual [Advanced Volume]

Contents Intellectual Property Statement ... I About this Manual... II Safety Precautions ... II

Overview ... 1-1 1.1 1.2 1.3 1.4 1.5

Basic Operations and Buttons... 1-1 Measurement Menu ... 1-1 Result Window ... 1-2 Measurement, Calculation and Study ... 1-2 Report ... 1-3 1.5.1 Viewing Report ... 1-3 1.5.2 Editing Report ... 1-3 1.5.3 Printing Report ... 1-3 1.5.4 Exporting Report ... 1-3 1.5.5 Viewing Fetal Growth Curve ... 1-4

Preset Pertinent to Measurements ... 2-1 2.1 2.2 2.3

Basic Operations ... 2-1 Meas Param ... 2-1 OB ... 2-1 2.3.1 GA and FG ... 2-2 2.3.2 Fetal Weight ... 2-4 2.4 Measure Preset ... 2-5

General Measurements ... 3-1 3.1

2D: Measurements ... 3-1 3.1.1 Distance ... 3-1 3.1.2 Area ... 3-1 3.1.3 Angle ... 3-3 3.1.4 Cross ... 3-3 3.1.5 TLength... 3-3 3.1.6 Parallel ... 3-4 3.1.7 B-Profile ... 3-4 3.1.8 B-Hist ... 3-5 3.1.9 Depth ... 3-5 3.2 2D: Calculations ... 3-5 3.2.1 Ratio (D) ... 3-5 3.2.2 Volume ... 3-6 3.2.3 Ratio (A)... 3-6 3.3 M Measurements... 3-7 3.3.1 Heart Rate ... 3-7 3.3.2 Slope ... 3-7 3.3.3 Distance ... 3-7 3.3.4 Time ... 3-8 3.3.5 Velocity ... 3-8

Abdomen ... 4-1 4.1 4.2 4.3

Measurement Items... 4-1 Exam Preparations ... 4-1 Measurement Operations ... 4-1

Contents i

4.4

Exam Report... 4-2

Gynecology... 5-1 5.1 5.2 5.3

Measurement Items ... 5-1 Exam Preparations ... 5-1 Measurement Operations ... 5-2 5.3.1 Measurements ... 5-2 5.3.2 Calculations ... 5-2 5.3.3 Studies ... 5-3 5.4 References ... 5-4

Cardiology ... 6-1 6.1 6.2 6.3

Measurement Items ... 6-1 Exam Preparations ... 6-4 Measurement Operations ... 6-4 6.3.1 Measurements ... 6-4 6.3.2 Calculations ... 6-4 6.3.3 2D Studies... 6-5 6.3.4 M Studies ... 6-18 6.4 References ... 6-20

Vascular ... 7-1 7.1 7.2 7.3

Measurement Items ... 7-1 Exam Preparations ... 7-1 Measurement Operations ... 7-1 7.3.1 Measurements ... 7-1 7.3.2 Calculations ... 7-2 7.3.3 Studies ... 7-2 7.4 References ... 7-2

Urology... 8-1 8.1 8.2 8.3

Measurement Items ... 8-1 Exam Preparations ... 8-2 Measurement Operations ... 8-2 8.3.1 Measurements ... 8-2 8.3.2 Calculations ... 8-2 8.3.3 Studies ... 8-4 8.4 Exam Report... 8-5 8.5 References ... 8-5

Small Parts ... 9-1 9.1 9.2 9.3

Measurement Items ... 9-1 Exam Preparations ... 9-1 Measurement Operations ... 9-1 9.3.1 Measurements ... 9-1 9.3.2 Calculations ... 9-2 9.3.3 Studies ... 9-2 9.4 Exam Report... 9-2 9.5 Reference ... 9-2

10 ORTH ... 10-1 10.1 HIP ... 10-1 10.2 Exam Preparations ... 10-2 10.3 Operations ... 10-2

ii Contents

10.4 Exam Report ... 10-2 10.5 References ... 10-2

11 Obstetric ...11-1 11.1 Measurement Items... 11-1 11.2 Clinical GA... 11-4 11.3 Ultrasound GA ... 11-4 11.3.1 GA in OB Items ... 11-4 11.3.2 AUA ... 11-5 11.3.3 CUA ... 11-5 11.4 Exam Preparations ... 11-5 11.5 Multi-fetus Exam... 11-6 11.6 Measurement Operations ... 11-6 11.6.1 Measurements ... 11-6 11.6.2 Calculations ... 11-6 11.6.3 Studies ... 11-6 11.7 Fetal Biophysical Profile ... 11-7 11.8 Fetal Growth Curve ... 11-7 11.9 References ... 11-8

Contents iii

Intellectual Property Statement SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD. (hereinafter called Mindray) owns the intellectual property rights to this Mindray product and this manual. This manual may refer to information protected by copyright or patents and does not convey any license under the patent rights or copyright of Mindray, or of others. Mindray intends to maintain the contents of this manual as confidential information. Disclosure of the information in this manual in any manner whatsoever without the written permission of Mindray is strictly forbidden. Release, amendment, reproduction, distribution, rental, adaptation, translation or any other derivative work of this manual in any manner whatsoever without the written permission of Mindray is strictly forbidden.

IMPORTANT! 1. 2.

No part of this manual may be copied or reprinted, in whole or in part, without written permission. The contents of this manual are subject to change without prior notice and without our legal obligation.

Intellectual Property Statement I

About this Manual Carefully read and understand the manual before using the system to ensure its safe and correct operation. NOTE:

1. When you operate the system, you can refer to the following manuals: z

Operator’s Manual (Basic Volume)

Operator’s Manual (Acoustic Output Data)

2. The functions described in this manual are not provided for all systems sold in all regions. Functions that are available are dependent on the specific system you purchased.

Depending on the software version, the preset settings, and optional configuration, the actual interfaces may appear different from those shown in this manual. All the menus and screens in this manual take the system in full configuration as an example.

Safety Precautions Please observe the following precautions to ensure patient and operator’s safety when using this system.

CAUTION:

1. Select the proper patient image and measurement tools. Only the professionals can decide the appropriate measurements and results. 2. Confine measurement calipers to the actual Region of Interest (RoI). Measurements that extend beyond the RoI will be incorrect. 3. Before examining a new patient, it is necessary to press the <End Exam> key to end the current scan and delete the patient information and data. Otherwise, new patient data will be combined with the previous patient. 4. When the system is turned OFF or the <End Exam> key is pressed, all the data that have not been saved are lost. 5. Changing modes during a measurement will delete the General Measurement data. 6. Pressing <Measure> key during a measurement will clear the General Measurement data. 7. Pressing <Clear> will clear the measurement caliper, all data in the result window, comments and body mark. 8. Ensure that measurement data correctly corresponds to the fetus during the Obstetric Measurement. 9. Fully understand the functionality of this system by referring to the Operator’s manual [Basic Volume].

II About this Manual

Overview

1.1

Basic Operations and Buttons

The title bar of the measurement menu is the name of the current measurement package. If there are more than one available measurement packages of the current exam mode, click the title bar to switch to other packages.

Basic Buttons: <Measure>: Enters/exits measurement. <Menu>: Opens/closes the measurement menu. <Set>: z Move the cursor to select an item in the menu, and press <Set> to activate the item. z During a measurement, press <Set> to confirm and continue. <Change>: z Switches among items: After activating an item, press <Change> continually to switch among the items in the measurement menu before measuring. z Switches between cursors: During a measurement, press <Change> to switch between the fixed end and the active end of the caliper. <Back>: z During a measurement, press <Back> to cancel the last operation. z Press <Back> continually to cancel the finished measurements backward. <Clear>: Clears comments, body mark, measurement calipers and values in the result window.

1.2

Measurement Menu Menu name To Select the Measurement Parts

Items

Overview 1-1

Menu name: Name of current measurement package. z There can be plural measurement packages corresponding to each exam mode.If there are other available measurement packages in the current exam mode, a “>>” is displayed in the menu name. z Move the cursor to “>>” to open the submenu. The other available measurement packages are listed in the submenu. Click the items in the submenu to switch among available packages. To Select the Measurement Parts: z [Loc (Location Prox/Dist/Mid)]: If an item in the menu is to measure parameters in the Proximal, Middle or Distal vessel, [Loc] appears in the menu. Before using the tool, move the cursor to [Loc] and press <Set> or <Back> to switch among [Prox], [Mid] or [Dist]. z [Side (Left/Right)]: If an item in the menu contains measurement of left or right side respectively, a [Side (Left/Right)] item appears in the menu. Move the cursor to this item, and press <Set> and <Back> to switch between “Left” and “Right”. The system will mark the parameters of different sides with “Left” and “Right”. Items: Items of current measurement package. z Move the cursor to an item, and press <Set> to activate the measurement. z The “►” displayed in the item indicates that this item has sub menu. Move the cursor to the item and press <Set> to open its submenu. In the submenu, click an item to start the measurement. After the measurement is completed, click [Return] to return to the parent menu. z When there is more than one page in the menu, click “▼” or “▲” to display the next or previous page. [Result (On/Off)]: To display/hide the result window.

[Report]: To edit/check the exam report. [Other]: If several image modes (e.g. B+M) are applied in imaging, you can click this item to switch to another mode.

1.3

Result Window

To display/hide the result window: Click [Result display/hide the result window.

(On/Off)] in the measurement menu to

To move the result window: 1. Move the cursor to the title bar of the result window. 2. Press <Set> and the cursor turns to the frame of the result window. 3. Roll the track ball to move the result window to the desired position. 4. Press <Set> to confirm.

1.4

Measurement, Calculation and Study

Measurement: Results of measurements are directly obtained via the measurement tool. Calculate: Results of calculations are calculated by the system, using other measured or calculated values as parameters. If all measurement tools related to a calculation tool are completed, the system will automatically calculate the result. Study: A group of measurement and / or calculations for a specific clinical application.

1-2 Overview

1.5

Report

The report records measurement results, which are automatically saved by system after each measurement. To enter the report dialog box: Click [Report] in the measurement menu to open the report.

1.5.1

Viewing Report

Each measurement result contains three latest values at most and a final value. Select an option from [Method] to determine the final value. The options are [Last], [Avg], [Max] and [Min], respectively representing selecting the last, average, maximum and minimum values from the three values. For values that can calculate GA and EDD, you can select another formula from the drop-down list corresponding to “Formula” to re-calculate the GA and EDD. Click [Prev Page] or [Next Page] to display the previous or next page if the report is more than one page. To save the data: z [Save Data]: To save the data to patient data base permanently. z [OK]: To save the data temporarily in this exam only. The data will be cleared when the exam is ended. To exit: z Click [OK] to save the data temporarily and exit, or z Press <Exit> or click [Cancel] to discard the changes and exit.

1.5.2

Editing Report

1. To edit a value in the report dialog box, move the cursor to the text box and press <Set>, and then modify the value. z Only measurement values can be edited. Calculation values cannot be edited. z After a measurement value is modified, the average value of the tool and the corresponding calculation value will be updated automatically. 2. To add “Comments” to the report: Input the comments in the text box of “Comments” in the report dialog box. 3. To clear all data except the patient information in the report dialog box, click [Clear All]. 4. Click [OK] to confirm the editing and exit; or, press <Exit> or click [Cancel] to discard the editing and exit.

1.5.3

Printing Report

Click [Print] in the report dialog box to print a report. To print report with the last frame in the screen, check “Insert Image”.

1.5.4

Exporting Report

The reports can be exported as standard format files, which can be viewed and edited on a PC. 1. Click [Export] to open the “Export” dialog box. 2. Select a drive from “Drive:”. 3. Select the path. 4. Input the file name in the text box behind “File”. 5. Click [OK] to export the report; or, click [Cancel] to cancel the export.

Overview 1-3

1.5.5

Viewing Fetal Growth Curve

Click [Growth] to view the fetal growth curve in OB reports. Refer to “11.8 Fetal Growth Curve” for details.

1-4 Overview

Preset Pertinent to Measurements

2.1

Basic Operations

To enter Preset: Press <Setup> to open the “Setup” menu. To exit Preset: Click [Return] in the preset menu to close the preset menu and exit preset. The basic operations of controls in Preset are as follows: z Text Box: Input text with the keyboard. z Radio Button : Click the button to select an item. At least one and only can be selected. z Check Box : Click the check box to select it or deselect it. Selecting plural boxes and selecting none are both allowed. z Drop-down list: Click the arrow beside the list to select an item.

NOTE:

The Preset parameters take effect only after returning from Preset following the above operations.

2.2

Meas Param

To configure the measurement parameters: Click “System Preset” in the preset menu, and then select “Meas Param” page in the “System Preset” dialog box. For description of parameters of the controls in this page, please refer to the Operator’s Manual [Basic Volume].

2.3

To configure the OB formulae: Click “System Preset” in the preset menu, and then select “OB” page in the “System Preset” dialog box.

Preset Pertinent to Measurements 2-1

2.3.1

GA and FG

The system provides the following .GA (Gestational Age) formulae and FG (Fetal Growth) formulae. Note: “/” means no formula provided for the item. Item

GS (Gestation Sac)

GA formula

Fetal growth curve formula

Tokyo

Rempen

Hellman

Hansmann

Rempen

China

Hansmann

Tokyo Jeanty Hadlock CRL (Crown-rump Length)

Nelson Robinson Rempen Hansmann China

Tokyo Hadlock Robinson Rempen Hansmann ASUM

ASUM

BPD (Biparietal Diameter)

HC (Head Circumference)

Tokyo

Hadlock

Jeanty

Kurtz

Hansmann

Sabbagha

Merz

Hansmann

Rempen

Merz

ChittyOI

Rempen

Osaka

ChittyOI

China

Osaka

Nicolaides

ASUM

Hadlock

Jeanty

Merz

Hansmann

ChittyPL

Nicolaides

ASUM

ASUM Hadlock

AC (Abdominal Circumference)

Hadlock Nicolaides ASUM

Jeanty Merz ChittyPL Nicolaides ASUM

2-2 Preset Pertinent to Measurements

Item

GA formula

Fetal growth curve formula

Tokyo

FL (Femur Length)

Hadlock

Tokyo

Jeanty

Hadlock

Hohler

Merz

Hansmann

O'Brien

Warda

Chitty

Osaka

China

Nicolaides

ASUM

ASUM OFD (Occipitofrontal Diameter)

Hansmann Nicolaides ASUM

Merz Hansmann Nicolaides ASUM

APAD (Anteroposterior Abdominal Diameter)

Merz

TAD (Transverse Abdominal Diameter)

Merz

FTA (Fetal Trunk Cross-sectional Area)

Osaka

Hansmann

APTD (Anteroposterior Trunk Diameter)

YS (Yolk Sac)

TTD (Transverse Trunk Diameter)

Jeanty

Merz

ASUM

Ulna (Ulna Length)

Merz

Tibia (Tibia Length)

Merz

RAD (Radial Length)

Merz

FIB (Fibula Length)

Merz

Yarkoni

THD (Thoracic Diameter)

HUM (Humerus Length)

CLAV (Clavicle Length) TCD (Cerebellum Diameter)

Hill Nicolaides

Goldstein Hill Nicolaides

Preset Pertinent to Measurements 2-3

Item OOD (Outer Orbital Diameter)

GA formula

Fetal growth curve formula

Jeanty

LV (Length of Vertebrae)

NT (Nuchal Translucency)

Cist Magna

Nicolaides Hadlock1 Hadlock2

EFW1/ EFW2

Hadlock3

Tokyo

Hadlock4 Hansmann Tokyo

Select an item in “OB Items” the available formulae appears in “Formula”. The formula with a “√” mark is the default formula. To set/change the default formula of “Fetal Gestational Age” or “Fetal Growth”: 1. In the “System Preset”Æ“OB”Æ“Fetal Gestational Age” or “Fetal Growth” tab sheet, select a measurement item in the “OB Items” column. 2. Select a formula in “Formula”. 3. Click [Default] to set it as default formula, and a “√” mark appears at the front of the item.

To browse a formula 1. In the “System Preset”Æ“OB”Æ“Fetal Gestational Age” or “Fetal Growth” tab sheet, select a measurement item in the “OB Items” column. 2. Select a formula in “Formula”. 3. Click [Browse] to browse it.

[Load Factory]: Click [Load Factory] to restore to factory default.

2.3.2

Fetal Weight

EFW is a calculation item. It is obtained by measuring multiple fetal parameters. z If all tools required for EFW formula have been performed, EFW will be obtained automatically. z If some tools have been performed already, the EFW value will be recalculated based on the latest values of the measurement tools. z Check/uncheck the combo box corresponding to “EFW1” and “EFW2” to display or hide it. z To set the unit of Fetal Weight: Select the unit (Metric, English, English & Metric) from the drop-down list of Fetal Weight Unit. The available EFW formulae are:

Formula

Description

Unit of EFW

Unit of Items

Hadlock1

EFW=10^(1.304+(0.05281*AC)+(0.1938*FL)-(0.004*AC*FL))

Hadlock2

EFW=10^(1.335-(0.0034*AC*FL)+(0.0316*BPD)+(0.0457*AC) +(0.1623*FL))

Hadlock3

EFW=10^(1.326-(0.00326*AC*FL)+(0.0107*HC)+(0.0438*AC) +(0.158*FL))

2-4 Preset Pertinent to Measurements

Formula

Description

Unit of EFW

Unit of Items

Hadlock4

EFW=10^(1.3596-(0.00386*AC*FL)+(0.0064*HC+ (0.00061*BPD*AC) + (0.0424*AC)+(0.174*FL))

Shepard

EFW (Kg) =10^(-1.7492+(0.166*BPD)+(0.046*AC)(2.646*AC*BPD/1000))

Merz1

EFW=-3200.40479+(157.07186*AC)+(15.90391*(BPD^2))

Merz2

EFW=0.1*(AC^3)

Hansmann

EFW=(-1.05775*BPD)+(0.0930707*(BPD^2)+(0.649145*THD)(0.020562*(THD^2)+0.515263

Tokyo

EFW=(1.07*(BPD^3))+(3.42*APTD*TTD*FL)

Osaka

EFW=(1.25674*(BPD^3))+(3.50665*FTA*FL)+6.3

Campbell

EFW (Kg)=EXP (-4.564+(0.282*AC)-(0.00331*(AC^2)))

2.4

Measure Preset

The measurement library of this system provides Measurement, Calculate and Study items of General, Abdomen, Gynecology, Cardiac, Vascular, Urology, SmallPart, ORTH and Obstetric. You can select appropriate items to create measurement packages. To Configure the Application Measurement Packages 1. Select an exam mode from the “Exam Mode” drop-down list. 2. If the name of the measurement package is empty, input the name of the measurement package in the text box behind “Meas Pack”. To manage the measurement packages, please click [Advanced]. 3. Select the category (General, Abdomen …) and type (Measurement, Calculate …) of the item to filter the items. 4. Add/remove items to/from application measurement packages:

[>]: Select an item in “Available Items”, and click [>] to add it to “Selected Items”. [>>]: Click [>>] to add all items in “Available Items” to “Selected Items”. [<]: Select an item in “Available Items”, and click [<] to remove it from “Selected Items”. [<<]: Click [<<] to remove all items from “Selected Items”. Sorting: Select an item in “Selected Items”, and click [Move Up] or [Move Down] to sort the items. h [Default]: Select an item in “Selected Items”, and click [Default] to set it as default measurement items. 5. To set the sequence of the measurement package, select an option in “Measure Sequence”: h h h h h

h None: The cursor returns to the measurement menu after the measurement. h Repeat: Repeats current item after the measurement. h Next: Activates next item in the menu after current measurement. 6. Select the other scan mode to configure the measurement package of the other scan mode. To use the same measurement menu for all scan modes, please check “Use same menu for all scan mode”.

Preset Pertinent to Measurements 2-5

To manage the measurement packages: Click [Advanced] to manage the measurement packages. [>]: Select a package in “Available Items”, and click [>] to add it to “Selected Items”. [>>]: Click [>>] to add all packages in “Available Items” to “Selected Items”. [<]: Select a package in “Available Items”, and click [<] to remove it from “Selected Items”. [<<]: Click [<<] to remove all packages from “Selected Items”. Sorting: Select a package in “Selected Items”, and click [Move Up] or [Move Down] to sort the items. z [Default]: Sets the default measurement package. Select a package in “Selected Items”, and click [Default] to set it as default package of current exam mode. z [New]: To create a new package. Click [New] to create a new package. To edit this package, please add it to “Selected Items” and click [Default] to set it as default. z [Delete]: To delete the selected package. Select a package in “Available Items”, and click [Delete] to delete it. z z z z z

2-6 Preset Pertinent to Measurements

General Measurements

General measurements provide basic measurement items.

3.1

2D: Measurements

3.1.1

Distance

Function: Measures the distance between two points in B Mode image. Operations: 1. Click [Distance] in the measurement menu to activate “Distance”. 2. Move the cursor to the starting point with the track ball. 3. Press <Set> to set the starting point. 4. Move the cursor to the end point with the track ball. Here, z To cancel the starting point, please press <Back>. z To switch between the active end and the set starting point, please press <Change>. 5. Press <Set> to set the end point.

3.1.2

Area

Function: Measures the area and perimeter of a closed region. The methods to create a closed region are: z Ellipse: Applicable to regions close to ellipse. It creates an ellipse region with two lines perpendicular to each other. z Trace: Applicable to regions of irregular shapes. It creates a free closed region with a random trace. z Spline: It creates a spline curve with a series of reference points (12 points at most). z Cross: To set a closed region with two axes perpendicular to each other. The starting point and the end point of the axes can both be fixed freely. These four methods are also applicable to other measurement items, and will not be repeated when mentioned below. The operations are as follows.

Ellipse 1. Select [Ellipse] from the drop-down list on the right of [Area] in the menu to activate “Area”. The cursor appears on the screen. 2. Move the cursor to a point on the edge of the region to be measured. 3. Press <Set> to set the starting point of the first axis of the ellipse. 4. Move the cursor to the end point of the first axis of the ellipse. Here, h To switch between the fixed end and the active end of the first axis, please press <Change>. h To cancel the starting point of the first axis of the ellipse, please press <Back>. 5. Press <Set> to set the end point of the first axis of the ellipse. The second axis appears on the screen. 6. Roll the track ball to change the length of the second axis to approach the region to be measured: h To lengthen the second axis, please roll the track ball rightward or upward.

General Measurements 3-1

h To shorten the second axis, please roll the track ball leftward or downward. h To cancel setting end point of the first axis, please press <Change> or <Back>. 7. Press <Set> to set the ellipse region and the measurement results appear in the results window.

Trace 1. Select <Trace> from the drop-down list on the right of [Area] in the menu. The cursor appears on the screen. 2. Move the cursor to a point in the edge of the region to be measured. 3. Press <Set> to set the starting point of the trace. 4. Roll the trackball to move the cursor along the edge of the desired region and trace the outline of the region. 5. To modify the trace line, please rotate the <Multi-Functional Knob (R)>: Rotate the knob anticlockwise to cancel a series of points. Rotate the knob clockwise to resume a series of points. 6. Press <Set> and the trace line will be closed with a straight line connecting the starting and end points. The trace will also be closed when the cursor is very near to the starting point.

Spline 1. Select [Spline] from the drop-down list on the right of [Area] in the menu, and the cursor appears on the screen. 2. Move the cursor to a point on the edge of the region to be measured. 3. Press <Set> to set the first reference point of the spline. 4. Move the trackball along the area of interest. Press <Set> to anchor the second point. 5. Roll the track ball, and a spline defined by the first and second reference points and the active cursor appears on the screen. 6. Roll the track ball along the edge of the target region and go on setting more reference points to make the spline approach the target region as close as possible. To correct a previous point, press <Back>. 7. After setting 12 reference points, the spline is fixed automatically. To end with the reference points less than 12, press <Set> twice to set current reference point and fix the spline. The results appear in the result window.

Cross 1. Select [Cross] from the drop-down list on the right of [Area] in the menu, and the cursor appears on the screen. 2. Move the cursor to a point on the edge of the region to be measured. 3. Press <Set> to set the end point of the first axis. 4. Move the cursor to the end point of the first axis. Here, h Press <Change> to switch between the starting point and the end point of the first axis. Or, h Press <Back> to cancel setting the starting point of the first axis. 5. Press <Set> to set the end point of the first axis. The second axis of cross appears on the screen. 6. Move the cursor to the starting point of the second axis, and press <Set> to fix the starting point of the second axis. 7. Move the cursor to the end point of the second axis. Here, h Press <Change> to switch between the starting point and the end point of the second axis. Or, h Press <Back> to cancel setting the starting point of the first axis. 8. Press <Set> to set the end point of the second axis and fix the region. The results appear in the result window.

3-2 General Measurements

3.1.3

Angle

Function: Measures the angle of two crossing planes on the image and the range is: 0°-180°. Operations: 1. Click [Angle] in the menu, and the cursor appears on the screen. 2. Set two line segments as described in “Distance”.The angle appears in the result window after setting the line segments.

3.1.4

Cross

Function: Measures the length of two line segments perpendicular to each other. Operations: 1. Click [Cross] in the menu and the cursor appears on the screen. 2. Move the cursor to the measurement starting point. 3. Press <Set> to set the starting point of the first line segment. 4. Move the cursor to the end point of the first line segment. Here, press <Change> to switch between the starting point and the end point of the first line segment. Or press <Back> to cancel setting the end point of the first line segment. 5. Press <Set> to set the end point of the first line segment. The second line segment perpendicular to the fixed line segment appears on the screen. 6. Move the cursor to the starting point of the second line segment. 7. Press <Set> to set the starting point of the second line segment. Or press <Change> or <Back> to cancel setting the end point of the first line segment. 8. Move the cursor to the end point of the second line segment. Here, z Press <Change> to switch between the starting point and the end point of the second line segment. Or z Press <Back> to cancel setting the starting point of the second line segment. 9. Press <Set> to set the end point of the second line segment.

3.1.5

TLength

Function: Measures the length of a curve on the image. The available measurement methods are Trace and Spline. Trace 1. Select [Trace] from the drop-down list of [TLength] in the menu, and the measure cursor appears on the screen. 2. Move the cursor to the measurement starting point. 3. Press <Set> to set the starting point of the trace. 4. Move the cursor along the target to trace the outline of the target. To modify the trace line, please rotate the <Multi-Functional Knob (R)>: Rotate the knob anticlockwise to cancel a series of points. Rotate the knob clockwise to resume a series of points. 5. Press <Set> to set the end point of the trace.

General Measurements 3-3

Spline 1. Select [Spline] from the drop-down list of [TLength] in the menu, and the measure cursor appears on the screen. 2. Move the cursor to the starting point of the spline. 3. Press <Set> to set the starting point of the spline. 4. Move the cursor along the target and press <Set> to set the second, third … reference points (12 at most). The reference points are joined with smooth curves. To correct a previous point, press <Back>. 5. Press <Set> twice to set the end point of the spline.

3.1.6

Parallel

Function: Measures the distance between every two line segments of up to five parallel line segments. Operations: 1. Click [Parallel] in the menu, and then two lines perpendicular to each other appear on the screen. The intersection is the starting point of the line segment. 2. Rotate the Multifunctional Knob to change the angle of the lines and press <Set> to confirm. 3. Move the cursor to the starting point of the line segment. 4. Press <Set> to set the starting point of the segment and the first line. 5. Move the cursor and press <Set> to set the other four parallel lines. When the last parallel line is set, the end point of the line segment set. During the measurement, press <Set> twice to set the last parallel line and complete the measurement.

3.1.7

B-Profile

Function: Measures the gray distribution of ultrasonic echo signals on a line. B-Profile must be measured on the frozen image. Operations: 1. Click [B-Profile] in the menu and the cursor appears on the screen. 2. Refer to the method for distance measurement to set a line segment.

Descriptions of the parameters in result window: z z z z z

No: Number of the result window, the last two results will be displayed on the screen. Gmax: The maximum gray. Gmin: The minimum gray. Gmean: The average gray. Gsd: The variance of gray.

3-4 General Measurements

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