JJF 1621-2017 English PDF

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JJF 1621-2017: Calibration Specification for Diagnostic Dosimeters
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1621-2017	419	Add to Cart	4 days	Calibration Specification for Diagnostic Dosimeters	Valid

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Basic data

Standard ID: JJF 1621-2017 (JJF1621-2017)
Description (Translated English): Calibration Specification for Diagnostic Dosimeters
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A58
Classification of International Standard: 17.240
Word Count Estimation: 18,172
Date of Issue: 2017-02-28
Date of Implementation: 2017-05-28
Quoted Standard: GB/T 19629-2005; IAEATRS 457; IEC 61267-2005; IEC 61674-2012
Adopted Standard: IEC 61674-2012, NEQ
Regulation (derived from): General Administration of Quality Supervision, Inspection and Quarantine No. 23 of 2017
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard is applicable to the calibration of a 40 to 150 kV X-ray diagnostic level dosimeter or detector, CT dosimeter or detector.

JJF 1621-2017: Calibration Specification for Diagnostic Dosimeters

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Diagnostic Dosimeters National Metrological Technical Code of the People's Republic of China Diagnostic level dosimeter calibration specification 2017-02-28 released 2017-05-28 Implementation State Administration of Quality Supervision, Inspection and Quarantine issued Diagnostic level dosimeter calibration specification Unit. National Diameter Radiation Metrology Technical Committee The main drafting unit. Beijing Institute of Metrology and Testing China Testing Technology Research Institute Participated in the drafting unit. Shanghai Institute of Metrology and Testing Technology This specification entrusts the National Diameter Radiation Metrology Technical Committee to explain The main drafters of this specification. Guo Hongtao (Beijing Institute of Metrology and Measurement) Zhang Yuanyue (China Test Technology Research Institute) Xu Shi Meng (China Test Technology Research Institute) Participate in the drafters. Yang Gan (China Test Technology Research Institute) Luo Chen (Beijing Institute of Metrology and Testing) Huang Xinsheng (Beijing Institute of Metrology and Measurement Science) Teng Jingjing (Shanghai Institute of Metrology and Testing Technology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 terms and units of measurement (1) 3.1 Terms (1) 3.2 Units of measurement (2) 4 Overview (2) 5 Metrological characteristics (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Measurement standards and other measuring equipment (3) 6.3 Radiation field (3) 7 Calibration items and calibration methods (3) 7.1 Calibration items (3) 7.2 Repetitive (3) 7.3 Calibration factors (4) 7.4 Energy response (6) 7.5 Long-term stability (6) 8 Calibration results (6) 9 re-school time interval (6) Appendix A RQR, RQA and RQT Series Radiation (7) Appendix B Diagnostic Level Dosimeter Calibration Record Recommended Format (8) Appendix C Diagnostic Level Dosimeter Calibration Certificate Inside Page Format (9) Appendix D Diagnostic Level Dosimeter Calibration Factor Uncertainty Evaluation Example (10)

Introduction

This specification is prepared in accordance with the requirements of JJF 1071-2010 "Rules for the Preparation of National Metrological Calibration Standards" According to IEC 61674-2012 "Medical Electrical Equipment X-ray diagnostic images used in ionization chambers and/or semiconductors Sensorless dosimeter "(Medicalelectricalequipment-Dosimeters withionizationchambers) and/orsemiconductordetectorsasusedinX-raydiagnosticimaging), GB/T 19629- 2005 "Medical electrical equipment X-ray diagnostic images used in the ionization chamber and/or semiconductor detector dosimeter" And IAEATRS457 "Radiation Diagnostic Dosage. Implementation Guide" (Dosimetryin DiagnosticRadiology. AnInternationalCodeofPractice). This specification is the first release. Diagnostic level dosimeter calibration specification

1 Scope

This specification applies to measuring (40 to 150) kV X-ray diagnostic level dosimeters or detectors, CT dosimeters or Detector calibration.

2 reference file

This specification refers to the following documents. GB/T 19629-2005 Medical electrical equipment X-ray diagnostic images used in the ionization chamber and/or half Conductor Detector Dosimeter IAEATRS457 Radiation Diagnostic Dosage. Implementation Guidelines (DosimetryinDiagnosticRadiology. AnInternationalCodeofPractice) IEC 61267-2005 Medical diagnostic X-ray equipment Measurement characteristics Radiation conditions used (Medicaldi- agnosticX-rayequipment-Radiationconditionsforuseinthedetermination ofcharac- teristics IEC 61674-2012 Medical devices and/or semiconductors for use in X-ray diagnostic imaging Device dosimeter (Dyimeterswithionizationchambersand/or semiconductordetectorsasusedinX-raydiagnosticimaging) For dated references, only the dated edition applies to this specification; references that are not dated , The latest version (including all modifications) applies to this specification.

3 terms and units of measurement

3.1 terminology 3.1.1 diagnostic level dosimeter diagnosticdosimeter Measuring the air kerma energy of the X-ray machine beam diagnosed with medical radiation by an ionization chamber or a semiconductor detector, Air ratio kinetic energy length product or air kerma rate of the device. 3.1.2 Air ratio kinetic energy length product airkermalengthproduct (PKL) For any straight line passing through the CT X-ray scanning cross section, the air kerma length is above the straight line Integration of gas kinetic energy and length product. 3.1.3 calibration factor calibrationfactor The reference value is divided by the quotient. 3.1.4 energy response energyresponse The response of the detector varies with the radiant energy. 3.1.5 non-diminished beam unattenuatedbeam An X-ray beam that strikes the subject or the mold body. 3.1.6 non-reduced beam unattenuatedbeamquality (RQR) ......

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