IEC TS 62462:2007 pdfダウンロード

IEC TS 62462:2007 pdfダウンロード。Ultrasonics – Output test – Guide for the maintenance of ultrasound physiotherapy systems
1 Scope
This technical specification describes methods meant to assist users of ultrasound therapy machines in checking the performance of such machines. It is applicable primarily to physiotherapists, general medical practitioners, chiropractors, osteopaths, beauty therapists,sports professionals, biomedical engineers, medical physicists, medical device service agents, commercial testers, test houses or manufacturers.
NOTE The titles of all publications referred to informatively in this technical specification are listed in the Bibliography.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 61 689:2007, Ultrasonics – Physiotherapy systems – Performance requirements and methods of measurement in the frequency range 0,5 MHz to 5 MHz
IEC 61 1 61 :2006, Ultrasonics – Power measurement – Radiation force balances and performance requirements
IEC 60601 -2-5, Medical electrical equipment – Part 2-5: Particular requirements for the safety of ultrasonic physiotherapy equipment
BIPM, IEC, IFCC, ISO, IUPAC, IUPAP and OIML, Guide to the expression of uncertainty in measurement
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
NOTE Most of the definitions described are taken from existing IEC standards. For use in the present guide such definitions are simplified.
3.1
acoustic working frequency
rate at which the treatment head’s contact face is vibrating
[IEC 61 689:2007, definition 3.3, simplified]
NOTE Typical ultrasound physio-therapy machines operate in the range from 0,7 MHz to 3,3 MHz. Long-wave ultrasound therapy machines operating in the frequency range 30 kHz to less than 1 MHz are not covered by the present document. Usually the boundary between sound and ultrasound is 20 kHz.
3.2
beam non-uniformity ratio
R BN
a measure of the range of non-uniformity in the ultrasound beam produced by the treatment head, calculated from the ratio of the acoustic intensity measured at the most intense part of the ultrasound beam to the spatial average acoustic intensity measured for that treatmenthead
[IEC 61 689:2007, definition 3.9, simplified]