IEC TS 61895 : 1.0
IEC TS 61895 : 1.0
ULTRASONICS - PULSED DOPPLER DIAGNOSTIC SYSTEMS - TEST PROCEDURES TO DETERMINE PERFORMANCE
International Electrotechnical Committee
ULTRASONICS - PULSED DOPPLER DIAGNOSTIC SYSTEMS - TEST PROCEDURES TO DETERMINE PERFORMANCE
International Electrotechnical Committee
Foreword<br> Introduction<br>1 Scope<br>2 Normative references<br>3 Definitions<br>4 Symbols<br>5 Overall tests of complete systems<br> 5.1 General considerations<br> 5.1.1 Types of pulsed Doppler ultrasound<br> systems<br> 5.1.2 Worst-case conditions<br> 5.1.3 Doppler beam axes<br> 5.1.4 Probe/target distance variation and <br> measurement<br> 5.2 Initial conditions<br> 5.2.1 Power supply<br> 5.2.2 Target movement direction<br> 5.2.3 Propagation medium<br> 5.2.4 Penetration depth<br> 5.2.5 Working depth<br> 5.2.6 Focusing<br> 5.2.7 Working Doppler angle<br> 5.2.8 Wall-thump filter cut-off frequency<br> 5.2.9 Transmitter output power<br> 5.2.10 Working pulse repetition frequency (PRF)<br> 5.2.11 Doppler (receiver) gain<br> 5.2.12 Test frequency<br> 5.2.13 Working sample volume length<br> 5.2.14 Doppler signal power measurement<br> 5.3 Zero signal noise level<br> 5.4 Doppler frequency response<br> 5.4.1 Frequency response range<br> 5.4.2 Deviation from flat response<br> 5.4.3 Large signal performance<br> 5.5 Spatial response<br> 5.5.1 Sample volume response<br> 5.6 Sample volume position registration error<br> 5.7 Beam position and orientation<br> 5.8 Intrinsic broadening<br> 5.9 Dead zone<br> 5.10 Acoustic working frequency<br> 5.11 Flow direction separation<br> 5.12 Velocity estimation accuracy<br> 5.13 Volume flow estimation accuracy<br> 5.14 Maximum, mean, mode and median frequency <br> estimation accuracy<br> 5.15 Velocity waveform indices estimation accuracy<br>6 Doppler test objects<br> 6.1 Test objects<br> 6.2 Electronic test object<br>Annex A (normative) Description of pulsed Doppler ultrasound <br> systems<br> A.1 - Single-channel system<br> A.2 - Multi-channel system<br> A.3 - Aliasing<br> A.4 - Duplex and triplex scanners<br>Bibliography
Deals with Doppler test objects for carrying out tests to measure the performance of pulsed Doppler ultrasound systems; Applicable to tests made on pulsed Doppler ultrasound systems whether they stand-alone or are part of another ultrasound instrument and tests made on an overall pulsed Doppler ultrasound system, a system not disconnected or disassembled.
Document Type | Standard |
Status | Current |
Publisher | International Electrotechnical Committee |
Committee | TC 87 |