JJG 744-2004Verification Regulation of Medical diagnostic X-ray Radiation Source (English PDF)

3.1 Terms (1)

3.2 Unit of Measure (2)

5.1 Radiant output air kerma rate (2)

5.2 Radiation output quality (2)

5.3 Repeatability of Radiation Output (2)

5.4 Radiation Output Linearity (2)

5.5 Resolution (4)

5.6 Radiation field and light field consistency (4)

5.7 X-ray tube voltage (4)

5.8 X-ray tube current (4)

5.9 X-ray tube focal point (4)

5.10 Loading time (5)

6.1 Appearance and logo (5)

6.2 Electrical Machinery and Protective Performance (5)

6.3 Manual (5)

7.1 Test conditions (5)

7.2 Test items (6)

7.3 Test method (7)

7.4 Verification Results Processing (15)

7.5 Verification Period (15)

Appendix A Certificate of Verification and Notice of Verification Results (Inside Page) Format (16)

A.1 Certificate of Verification (inside page) format (16) A.2 Test result notification (inner page) Format (18) Appendix B various X-ray tube models and related technical parameters (19) Medical diagnostic X - ray radiation source verification procedures

1 Scope

This procedure applies to the first test of medical diagnostic X-ray radiation source, follow-up test and the use of the test.

This procedure does not apply to X-ray (CT) radiation sources, digital radiography (CR, DR) radiation sources, mammography Radiation source.

2 References

This regulation cites the following documents.

GB 9706.12-1997 "Medical Electrical Equipment Part I. Safety General Requirements Third, the standard parallel diagnosis Broken X-ray equipment radiation protection General requirements " GB 8279-2001 "medical X-ray diagnosis of radiation health protection requirements" GB 9706.3-2000 "Medical electrical equipment - Part 2. Diagnostic X-ray generator high-voltage generator Special safety requirements " GB 3100 ~ 3102-1993 "quantity and unit" GB/T 11755.1 ~ 11755.2-1989 "medical diagnostic X-ray tube voltage and tube current test method" GB/T 10149-1988 "Medical X-ray equipment terminology and symbols" SJ/T 11094-1996 "Medical X-ray image intensifier TV system performance parameters measurement method" WS/T 189-1999 "Medical X-ray diagnostic imaging quality control testing specification" YY/T 0063-2000 "Medical diagnostic X-ray tube assembly focus characteristics" Federal Performance Standard for Diagnostic X-ray Systems and Their MajorCom-ponents; Final Rule. Department of Health and Human Services and Drug Admin-istration21CFRPart 1020 [FederalRegister. May19, 1994] Part VI when using this code, care should be taken to use the currently valid version of the above cited references.

3 Terms and measurement units

3.1 Terms

3.1.1 Kinetic kerma

Uncharge ionized particles, the mass of the material in the dm release of all charged particles of the initial kinetic energy Sum dEtr divided by dm. The symbol is K.

3.1.2 kermarate energy rate kermarate the increase in kinetic energy, dK, over dt, divided by dt. The symbol is K.

3.1.3 Half price layer half-valuelayer the thickness of the weakened layer that reduces the amount of unidirectional particle flow to half the initial value. The symbol is HVL.

3.1.4 X-ray tube voltage X-raytubevoltage Potential difference between anode and cathode of X-ray tube.