Vivid 7 and EchoPAC PC Reference Manual Vol 2 Ver 6.x.x

MANUAL STATUS FC092859-02

© GE Medical Systems. All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of GE Medical Systems.

01/10/2006 COMPANY DATA:

GE VINGMED ULTRASOUND A/S Strandpromenaden 45, N-3191 Horten, Norway Tel.: (+47) 3302 1100 Fax: (+47) 3302 1350

Table of Contents

Table of Contents Table of Contents Chapter 1 Measurements Measurement overview ... 2 Cardiac measurements... 2 Measurement formulas ... 16 Formulas–Cardiac ... 16 Formulas–Generic ... 50 Formulas–OB... 52 Formulas–GYN ... 57 Formulas–Vascular... 59 Measurement accuracy ... 60 General ... 60 Sources of error ... 60 Optimizing Measurement Accuracy ... 61 Measurement Uncertainties... 62 DICOM SR Measurements ... 64 Supported parameters ... 64 Supported methods ... 71

Chapter 2 OB Tables ASUM ... 74 Berkowitz... 76 Brenner ... 77 Campbell ... 77 Eriksen... 78 Goldstein ... 79 Hadlock ... 80 Vivid 7/EchoPAC PC Reference Manual FC092859-02

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Table of Contents Hansmann ...87 Hellman ... 96 Hill...96 Hohler ...97 Jeanty ... 97 JSUM ...110 Kurtz ... 114 Mayden ... 115 Mercer ... 116 Merz ... 117 Moore ...127 Nelson ... 127 Osaka ... 128 Paris ... 132 Rempen ... 135 Robinson ... 140 Tokyo ... 140 Tokyo Shinozuka ...144 Williams ... 151 Yarkoni ... 151

Chapter 3 Acoustic information The real-time display of acoustic output indices... 155 Thermal Index ... 155 Mechanical Index: ...156 Track 3 ALARA Educational Program... 158 Default Settings and Output Levels ... 158 Controls Affecting Acoustic Output... 158 Track 3 Summary Table ... 161 Acoustic Parameters as Measured in Water ... 162 Definitions, symbols and abbreviations ... 162 Explanation of Footnotes... 186 Multiple focal-zones... 186 Operating Conditions... 187

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Table of Contents Acoustic Output Reporting Tables for Track 3/IEC 60601-2-37 .. 188 Transducer Model: 3S ... 189 Transducer Model: M3S ... 195 Transducer Model: 3V ... 201 Transducer Model: M4S ... 208 Transducer Model: 5S ... 214 Transducer Model: 7S ... 220 Transducer Model: 10S ... 226 Transducer Model: 3.5C ... 232 Transducer Model: 4C ... 237 Transducer Model: 5C ... 242 Transducer Model: M7C ... 247 Transducer Model: 8C ... 252 Transducer Model: 7L... 257 Transducer Model: 9L... 262 Transducer Model: 10L... 267 Transducer Model: 12L... 272 Transducer Model: M12L... 277 Transducer Model: E8C... 282 Transducer Model: 6T/6T-OR... 287 Transducer Model: 9T... 293 Transducer Model: P2D... 299 Transducer Model: P6D... 301 Transducer Model: i13L ... 303 Transducer Model: i8L ... 308

Chapter 4 Electromagnetic Compatibility Appendix Statements on the safety of ultrasound ... 322 AIUM Statement on Clinical Safety... 322 AIUM Statement on Mammalian in Vivo Ultrasonic Biological Effects... 322 Medical Ultrasound Safety - AIUM ... 323 Track 3 ALARA Educational Program ... 323

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Table of Contents

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Vivid 7/EchoPAC PC Reference Manual FC092859-02

Measurements

Chapter 1 Measurements This chapter includes the following information:

• Measurement overview ... 2 • Cardiac measurements ... 2 • Measurement formulas... 16 • Formulas–Cardiac ... 16 • Formulas–Generic... 50 • Formulas–OB ... 52 • Formulas–GYN ... 57 • Formulas–Vascular ... 59 • Measurement accuracy ... 60 • General ... 60 • Sources of error ... 60 • Optimizing Measurement Accuracy ... 61 • Measurement Uncertainties ... 62 • DICOM SR Measurements ... 64 • Supported parameters ... 64 • Supported methods... 71

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Measurements

Measurement overview The following table shows the cardiac measurements available on the Vivid 7 ultrasound unit.

Cardiac measurements Abbreviation

Definition

Unit

%FS

LV Fractional Shortening, 2D

%

%FS

LV Fractional Shortening, M-mode

%

%IVS Thck

IVS Fractional Shortening, 2D

%

%IVS Thck

IVS Fractional Shortening, M-mode

%

%LVPW Thck

LV Posterior Wall Fractional Shortening, 2D

%

%LVPW Thck

LV Posterior Wall Fractional Shortening, M-mode

%

Ao Arch Diam

Aortic Arch Diameter

cm

Ao asc

Ascending Aortic Diameter

cm

Ao Desc Diam

Descending Aortic Diameter

cm

Ao Isthmus

Aortic Isthmus

cm

Ao Root Diam

Aortic Root Diameter

cm

Ao Root Diam

Aortic Root Diameter, M-mode

cm

AR ERO

PISA: Regurgitant Orifice Area

cm2

AR Flow

PISA: Regurgitant Flow

ml/s

AR PHT

AV Insuf. Pressure Half Time

ms

AR Rad

PISA: Radius of Aliased Point

cm

AR RV

PISA: Regurgitant Volume Flow

ml

AR Vel

PISA: Aliased Velocity

m/s

AR Vmax

Aortic Insuf. Peak Velocity

m/s

AR VTI

Aortic Insuf. Velocity Time Integral

cm

2

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Measurements Abbreviation

Definition

Unit

ARed max PG

Aortic Insuf. End-Diastole Pressure Gradient

mm Hg

ARed Vmax

Aortic Insuf. End-Diastolic Velocity

m/s

AV Acc Slope

Aortic Valve Flow Acceleration

m/s2

AV Acc Time

Aortic Valve Acceleration Time

ms

AV AccT/ET

AV Acceleration to Ejection Time Ratio

AV CO

Cardiac Output by Aortic Flow

l/min

AV Cusp

Aortic Valve Cusp Separation, 2D

cm

AV Cusp

Aortic Valve Cusp Separation, M-mode

cm

AV Dec Time

Aortic Valve Deceleration Time

ms

AV Diam

Aortic Diameter, 2D

cm

AV max PG

Aortic Valve Peak Pressure Gradient

mm Hg

AV mean PG

Aortic Valve Mean Pressure Gradient

mm Hg

AV SV

Stroke Volume by Aortic Flow

ml

AV Vmax

Aortic Valve Peak Velocity

m/s

AV Vmean

AV Mean Velocity

m/s

AV VTI

Aortic Valve Velocity Time Integral

cm

AVA (Vmax)

AV Area by Continuity Equation by Peak V

cm2

AVA (VTI)

AV Area by Continuity Equation VTI

cm2

AVA Planimetry

Aortic Valve Area

cm2

AVET

Aortic Valve Ejection Time

ms

AVET

Aortic Valve Ejection Time, M-mode

ms

CO (A-L A2C)

CO 2CH, Single Plane, Area-Length

l/min

CO (A-L A4C)

CO 4CH, Single Plane, Area-Length

l/min

CO (Biplane

CO, Bi-Plane, MOD

l/min

CO (bullet)

CO, Bi-Plane, Bullet

l/min

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Measurements Abbreviation

Definition

Unit

CO (MOD A2C)

CO 2CH, Single Plane, MOD(Simpson)

l/min

CO (MOD A4C)

CO 4CH, Single Plane, 4CH, MOD(Simpson)

l/min

CO(Cube)

Cardiac Output, 2D, Cubic

l/min

CO(Cube)

Cardiac Output, M-mode, Cubic

l/min

CO(Teich)

Cardiac Output, 2D, Teicholtz

l/min

CO(Teich)

Cardiac Output, M-mode, Teicholtz

l/min

D-E Excursion

MV Anterior Leaflet Excursion

cm

D-E Excursion

Mitral Valve D-E Slope

cm

EDV (bullet)

LV Volume, Diastolic, Bi-Plane, Bullet

ml

EDV(Cube)

Left Ventricle Volume, Diastolic, 2D, Cubic

ml

EDV(Cube)

Left Ventricle Volume, Diastolic, M-mode, Cubic

ml

EDV(Teich)

Left Ventricle Volume, Diastolic, 2D, Teicholz

ml

EDV(Teich)

Left Ventricle Volume, Diastolic, M-mode, Teicholz

ml

EF (A-L A2C)

Ejection Fraction 2CH, Single Plane, Area-Length

%

EF (A-L A4C)

Ejection Fraction 4CH, Single Plane, Area-Length

%

EF (Biplane)

Ejection Fraction, Bi-Plane, MOD

%

EF (bullet)

Ejection Fraction 2CH, Bi-Plane, Bullet

%

EF (Geom)

Ejection Fraction Geometric calculation

%

EF (MOD A2C)

Ejection Fraction 2CH, Single Plane, MOD(Simpson)

%

EF (MOD A4C)

Ejection Fraction 4CH, Single Plane, 4CH, MOD(Simpson)

%

E-F Slope

Mitral Valve E-F Slope

m/s

4

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Measurements Abbreviation

Definition

Unit

EF(Cube)

Ejection Fraction, 2D, Cubic

%

EF(Cube)

Ejection Fraction, M-mode, Cubic

%

EF(Teich)

Ejection Fraction, 2D, Teicholtz

%

EF(Teich)

Ejection Fraction, M-mode, Teicholtz

%

EPSS

E-Point-to-Septum Separation, M-mode

cm

EPSS 2D

E-Point-to-Septum Separation, 2D

cm

ERO

Effective Regurgitant Orifice

cm2

ESV (bullet)

LV Volume, Systolic, Bi-Plane, Bullet

ml

ESV(Cube)

Left Ventricle Volume, Systolic, 2D, Cubic

ml

ESV(Cube)

Left Ventricle Volume, Systolic, M-mode, Cubic

ml

ESV(Teich)

Left Ventricle Volume, Systolic, 2D, Teicholz

ml

ESV(Teich)

Left Ventricle Volume, Systolic, M-mode, Teicholz

ml

HR

AV Heart Rate, Dop

BPM

HR

Heart Rate, 2D, Teicholtz

bpm

HR

Heart Rate for 2CH study

bpm

HR

Heart Rate for 4CH study

bpm

HR

Heart Rate for 2CH AL study

bpm

HR

Heart Rate for 2CH MOD study

bpm

HR

Heart Rate for 4CH AL study

bpm

HR

Heart Rate for 4CH MOD study

bpm

HR

Heart Rate for Bullet study

bpm

HR

Heart Rate for BiPlane MOD study

bpm

HR

LV Heart Rate, Dop

bpm

HR

Heart Rate, M-mode, Teicholtz

bpm

HR

Heart Rate

bpm

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Measurements Abbreviation

Definition

Unit

IVC

Inferior Vena Cava

cm

IVCT

Isovolumic Contraction Time

ms

IVRT

Isovolumic Relaxation Time

ms

IVSd

Interventricular Septum Thickness, Diastolic, 2D

cm

IVSd

IVS Thickness, Diastolic, M-mode

cm

IVSs

Interventricular Septum Thickness, Systolic, 2D

cm

IVSs

IVS Thickness, Systolic, M-mode

cm

LA Diam

Left Atrium Diameter, 2D

cm

LA Diam

Left Atrium Diameter, M-mode

cm

LA Diam

Right Atrium Diameter, 2D

cm

LA Major

Left Atrium Major

cm

LA Minor

Left Atrium Minor

cm

LA/Ao

LA Diameter to AoRoot Diameter Ratio, 2D

LA/Ao

LA Diameter to AoRoot Diameter Ratio, M-mode

LAEDV(A-L)

LA End Diastolic Volume, Area-Length

ml

LAEDV Index(A-L)

LA End Diastolic Volume Index, AreaLength

ml/m2

LAESV(A-L)

LA End Systolic Volume, Area-Length

ml

LAESV Index(A-L)

LA End Systolic Volume Index, AreaLength

ml/m2

LAEDV (MOD A4C)

LA Volume, Single Plane, MOD

ml

LAESV (MOD A4C)

LA Volume, Systolic, Single Plane, MOD

ml

LIMP

Left Index of Myocardial Performance

LVA (s)

Left Ventricular Area, Systolic, 2CH

6

cm2

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Measurements Abbreviation

Definition

Unit

LVAd (A2C)

Left Ventricular Area, Diastolic, 2CH

cm2

LVAd (A4C)

Left Ventricular Area, Diastolic, 4CH

cm2

LVAd(sax)

LV area, SAX, Diastolic

cm2

LVAend (d)

LV Endocardial Area, SAX

cm2

LVAepi (d)

LV Epicardial Area, SAX

cm2

LVAs (A4C)

Left Ventricular Area, Systolic, 4CH

cm2

LVAs(sax)

LV area, SAX, Systolic

cm2

LVd Mass

LV Mass, Diastolic, 2D

g

LVd Mass

LV Mass, Diastolic, M-mode

g

LVd Mass Index

LV Mass Index, Diastolic, 2D

g/m2

LVd Mass Index

LV Mass Index, Diastolic, M-mode

g/m2

LVEDV (A-L A2C)

LV Volume, Diastolic, 2CH, Area-Length

ml

LVEDV (A-L A4C)

LV Volume, Diastolic, 4CH, Area-Length

ml

LVEDV (Geom)

LV Volume, Diastolic, Geometric

ml

LVEDV (MOD A2C)

LV Volume, Diastolic, Single Plane, 2CH, MOD

ml

LVEDV (MOD A4C)

LV Volume, Diastolic, Single Plane, 4CH, MOD

ml

LVEDV (MOD BP)

LV Volume, Diastolic, Bi-Plane, MOD

ml

LVESV (A-L A2C)

LV Volume, Systolic, 2CH, Area-Length

ml

LVESV (A-L A4C)

LV Volume, Systolic, 4CH, Area-Length

ml

LVESV (Geom)

LV Volume, Systolic, Geometric

ml

LVESV (MOD A2C)

LV Volume, Systolic, Single Plane, 2CH, MOD

ml

LVESV (MOD A4C)

LV Volume, Systolic, Single Plane, 4CH, MOD

ml

LVESV (MOD BP)

LV Volume, Systolic, Bi-Plane, MOD

ml

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Measurements Abbreviation

Definition

Unit

LVESV (MOD LAX)

LV Volume, Diastolic, Apical View, LAX, MOD

ml

LVESV (MOD LAX)

LV Volume, Systolic, Apical View, LAX, MOD

ml

LVET

Left Ventricle Ejection Time

ms

LVIDd

LV Internal Dimension, Diastolic, 2D

cm

LVIDd

LV Internal Dimension, Diastolic, M-mode

cm

LVIDs

LV Internal Dimension, Systolic, 2D

cm

LVIDs

LV Internal Dimension, Systolic, M-mode

cm

LVLd (apical)

Left Ventricular Length, Diastolic, 2D

cm

LVLs (apical)

Left Ventricular Length, Systolic, 2D

cm

LVOT Area

Left Ventricle Outflow Tract Area

cm2

LVOT CO

Cardiac Output by Aortic Flow

l/min

LVOT Diam

Left Ventricular Outflow Tract Diameter

cm

LVOT max PG

LVOT Peak Pressure Gradient

mm Hg

LVOT mean PG

LVOT Mean Pressure Gradient

mm Hg

LVOT SI

Stroke Volume Index by Aortic Flow

ml/m2

LVOT SV

Stroke Volume by Aortic Flow

ml

LVOT Vmax

LVOT Peak Velocity

m/s

LVOT Vmean

LVOT Mean Velocity

m/s

LVOT VTI

LVOT Velocity Time Integral

cm

LVPWd

Left Ventricular Posterior Wall Thickness, Diastolic, 2D

cm

LVPWd

Left Ventricular Posterior Wall Thickness, Diastolic, M-mode

cm

LVPWs

Left Ventricular Posterior Wall Thickness, Systolic, 2D

cm

LVPWs

Left Ventricular Posterior Wall Thickness, Systolic, M-mode

cm

8

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Measurements Abbreviation

Definition

Unit

LVs Mass

LV Mass, Systolic, 2D

g

LVs Mass

LV Mass, Systolic, M-mode

g

LVs Mass Index

LV Mass Index, Systolic, 2D

g/m2

LVs Mass Index

LV Mass Index, Systolic, M-mode

g/m2

LAAd (A2C)

Left Atrium Area, Apical 2C

cm2

LAAd (A4C)

Left Atrium Area, Apical 4C

cm2

MCO

Mitral Valve closure to Opening

ms

MP Area

Mitral Valve Prosthesis

cm2

MR Acc Time

MV Regurg. Flow Acceleration

s

MR ERO

PISA: Regurgitant Orifice Area

cm2

MR Flow

PISA: Regurgitant Flow

ml/s

MR max PG

Mitral Regurg. Peak Pressure Gradient

mm Hg

MR Rad

PISA: Radius of Aliased Point

cm

MR RV

PISA: Regurgitant Volume Flow

ml

MR Vel

PISA: Aliased Velocity

m/s

MR Vmax

Mitral Regurg. Peak Velocity

m/s

MR Vmax

PISA: CW Peak Velocity

m/s

MR Vmean

Mitral Regurg. Mean Velocity

m/s

MR VTI

Mitral Regurg. Velocity Time Integral

cm

MR VTI

PISA: CW Velocity Time Integral

cm

MV A Dur

Mitral Valve A-Wave Duration

ms

MV A Velocity

MV Velocity Peak A

m/s

MV Acc Slope

Mitral Valve Flow Acceleration

m/s2

MV Acc Time

Mitral Valve Acceleration Time

ms

MV Acc/Dec Time

MV: Acc.Time/Decel.Time Ratio

MV an diam

Mitral Valve Annulus Diameter, 2D

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Measurements Abbreviation

Definition

Unit

MV CO

Cardiac Output by Mitral Flow

l/min

MV Dec Slope

Mitral Valve Flow Deceleration

m/s2

MV Dec Time

Mitral Valve Deceleration Time

ms

MV E Velocity

MV Velocity Peak E

m/s

MV E/A Ratio

Mitral Valve E-Peak to A-Peak Ratio

MV max PG

Mitral Valve Peak Pressure Gradient

mm Hg

MV mean PG

Mitral Valve Mean Pressure Gradient

mm Hg

MV PHT

Mitral Valve Pressure Half Time

ms

MV SI

Stroke Volume Index by Mitral Flow

ml/m2

MV SV

Stroke Volume by Mitral Flow

ml

MV Time to Peak

Mitral Valve Time to Peak

ms

MV Vmax

Mitral Valve Peak Velocity

m/s

MV Vmean

MV Mean Velocity

m/s

MV VTI

Mitral Valve Velocity Time Integral

cm

MVA

Mitral Valve Area

cm2

MVA By PHT

Mitral Valve Area according to PHT

cm2

MVA by plan

Mitral Valve Area, 2D

cm2

MVET

Mitral Valve Ejection Time

ms

P Vein A

Pulmonary Vein Velocity Peak A (reverse)

m/s

P Vein A Dur

Pulmonary Vein A-Wave Duration

ms

P Vein D

Pulmonary Vein End-Diastolic Peak Velocity

m/s

P Vein S

Pulmonary Vein Systolic Peak Velocity

m/s

PAEDP

Pulmonary Artery Diastolic Pressure

mm Hg

PE(d)

Pericard Effusion, M-mode

cm

PEs

Pericard Effusion, 2D

cm

10

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Measurements Abbreviation

Definition

Unit

PR max PG

Pulmonic Insuf. Peak Pressure Gradient

mm Hg

PR mean PG

Pulmonic Insuf. Mean Pressure Gradient

mm Hg

PR PHT

Pulmonic Insuf. Pressure Half Time

ms

PR Vmax

Pulmonic Insuf. Peak Velocity

m/s

PR VTI

Pulmonic Insuf. Velocity Time Integral

cm

PRend max PG

Pulmonic Insuf. End-Diastole Pressure Gradient

mm Hg

PRend Vmax

Pulmonic Insuf. End-Diastolic Velocity

m/s

Pulmonic Diam

Pulmonary Artery Diameter, 2D

cm

PV Acc Slope

Pulmonic Valve Flow Acceleration

m/s2

PV Acc Time

Pulmonic Valve Acceleration Time

ms

PV Acc Time/ET Ratio

PV Acceleration to Ejection Time Ratio

PV an diam

Pulmonic Valve Annulus Diameter, 2D

cm

PV Ann Area

Pulmonic Valve Area

cm2

PV CO

Cardiac Output by Pulmonic Flow

l/min

PV CO

Cardiac Output by Pulmonic Flow

l/min

PV max PG

Pulmonic Valve Peak Pressure Gradient

mm Hg

PV mean PG

Pulmonic Valve Mean Pressure Gradient

mm Hg

PV SV

Stroke Volume by Pulmonic Flow

ml

PV Vmax

Pulmonary Artery Peak Velocity

m/s

PV Vmax

Pulmonic Valve Peak Velocity

m/s

PV Vmean

PV Mean Velocity

m/s

PV VTI

Pulmonic Valve Velocity Time Integral

cm

PVA (VTI)

Pulmonary Artery Velocity Time Integral

cm2

PVein S/D Ratio

Pulmonary Vein SD Ratio

PVET

Pulmonic Valve Ejection Time

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11

Measurements Abbreviation

Definition

Unit

PVPEP

Pulmonic Valve Pre-Ejection Period

ms

PVPEP/ET Ratio

PV Pre-Ejection to Ejection Time Ratio

Qp/Qs

Pulmonic-to-Systemic Flow Ratio

RA Major

Right Atrium Major, 2D

cm

RA Minor

Right Atrium Minor, 2D

cm

RAEDV A2C

Right Atrium End Diastolic Volume, Apical 2 chamber

cm3

RAEDV A-L

RA End Diastolic Volume (A-L)

ml

RAEDV MOD

RA Volume Diastolic, Single Plan, MOD

ml

RAEDV MOD

RA End Diastolic Volume (MOD)

ml

RAESV A-L

RA End Systole Volume (A-L)

ml

RAESV MOD

RA Volume, Systolic, Single Plane, MOD

ml

RAESV MOD

RA End Systole Volume (MOD)

ml

RALd

Right Atrium Length, Diastole

cm

RALs

RA Length, systole

cm

RIMP

Right Index of Myocardial Performance

RJA (A4C)

Regurgitant jet area

RJA/LAA

Regurgitant jet area ratio RJA/LAA

RV Major

Right Ventricle Major

cm

RV Minor

Right Ventricle Minor

cm

RVAWd

Right Ventricle Wall Thickness, Diastolic, 2D

cm

RVAWs

Right Ventricle Wall Thickness, Systolic, 2D

cm

RVET

Right Ventricle Ejection Time

s

RVIDd

Right Ventricle Diameter, Diastolic, 2D

cm

RVIDd

Right Ventricle Diameter, Diastolic, Mmode

cm

12

cm2

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Measurements Abbreviation

Definition

Unit

RVIDs

Right Ventricle Diameter, Systolic, 2D

cm

RVIDs

Right Ventricle Diameter, Systolic, Mmode

cm

RVOT Area

Right Ventricle Outflow Tract Area

cm2

RVOT Diam

RV Output Tract Diameter, 2D

cm

RVOT Diam

RV Output Tract Diameter, M-Mode

cm

RVOT max PG

RVOT Peak Pressure Gradient

mm Hg

RVOT meanPG

RVOT Mean Pressure Gradient

mm Hg

RVOT SI

LV Stroke Volume Index by Pulmonic Flow

ml/m2

RVOT SV

Stroke Volume by Pulmonic Flow

ml

RVOT Vmax

RVOT Peak Velocity

m/s

RVOT Vmean

RVOT Mean Velocity

m/s

RVOT VTI

RVOT Velocity Time Integral

cm

RVSP

Right Ventricle Systolic Pressure

mm Hg

RVWd

Right Ventricle Wall Thickness, Diastolic, M-mode

cm

RVWs

Right Ventricle Wall Thickness, Systolic, M-mode

cm

RAA (d)

Right Atrium Area, 2D, Diastole

cm2

RAA (s)

Right Atrium Area, 2D, Systole

cm2

SI (A-L A2C)

LV Stroke Index, Single Plane, 2CH, Area-Length

ml/m2

SI (A-L A4C)

LV Stroke Index, Single Plane, 4CH, Area-Length

ml/m2

SI (Biplane)

LV Stroke Index, Bi-Plane, MOD

ml/m2

SI (bullet)

LV Stroke Index, Bi-Plane, Bullet

ml/m2

SI (MOD A2C

LV Stroke Index, Single Plane, 2CH, MOD

ml/m2

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Measurements Abbreviation

Definition

Unit

SI (MOD A4C

LV Stroke Index, Single Plane, 4CH, MOD

ml/m2

SI (Teich)

LV Stroke Index, Teicholz, 2D

ml/m2

SI (Teich)

LV Stroke Index, Teicholz, M-mode

ml/m2

SV (A-L A2C)

LV Stroke Volume, Single Plane, 2CH, Area-Length

ml

SV (A-L A4C)

LV Stroke Volume, Single Plane, 4CH, Area-Length

ml

SV (Biplane)

LV Stroke Volume, Bi-Plane, MOD

ml

SV (bullet)

LV Stroke Volume, Bi-Plane, Bullet

ml

SV (MOD A2C)

LV Stroke Volume, Single Plane, 2CH, MOD(Simpson)

ml

SV (MOD A4C)

LV Stroke Volume, Single Plane, 4CH, MOD(Simpson)

ml

SV(Cube)

LV Stroke Volume, 2D, Cubic

ml

SV(Cube)

LV Stroke Volume, M-mode, Cubic

ml

SV(Teich)

LV Stroke Volume, 2D, Teicholtz

ml

SV(Teich)

LV Stroke Volume, M-mode, Teicholtz

ml

Systemic Diam

Systemic Vein Diameter, 2D

cm

Systemic Vmax

Systemic Vein Peak Velocity

m/s

Systemic VTI

Systemic Vein Velocity Time Integral

cm

TCO

Tricuspid Valve Closure to Opening

ms

TR max PG

Tricuspid Regurg. Peak Pressure Gradient

mm Hg

TR mean PG

Tricuspid Regurg. Mean Pressure Gradient

mm Hg

TR Vmax

Tricuspid Regurg. Peak Velocity

m/s

TR Vmean

Tricuspid Regurg. Mean Velocity

m/s

TR VTI

Tricuspid Regurgitation Velocity Time Integral

cm

14

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