Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

GB/T 43688-2024 English PDF

Q: How long will the true-PDF of English version of GB/T 43688-2024 be delivered?

Upon your order, we will start to translate GB/T 43688-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Q: Can I share the purchased PDF of GB/T 43688-2024_English with my colleagues?

Yes. The purchased PDF of GB/T 43688-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Q: Does the price include tax/VAT?

Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries). Avoidance of Double Taxation Agreements (DTAs) between Singapore and 100+ Countries: https://www.iras.gov.sg/taxes/international-tax

Q: Do you accept my currency other than USD?

Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

US$539.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 43688-2024: The quality control method of magnetic resonance imaging or spectrometer
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 43688-2024	539	Add to Cart	5 days	The quality control method of magnetic resonance imaging or spectrometer	Valid

Similar standards

GB/T 7247.1 GB/T 41310 GB/T 39118 GB/T 45307 GB/T 43690

Basic data

Standard ID: GB/T 43688-2024 (GB/T43688-2024)
Description (Translated English): The quality control method of magnetic resonance imaging or spectrometer
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L50
Classification of International Standard: 17.180.99
Word Count Estimation: 26,213
Date of Issue: 2024-03-15
Date of Implementation: 2024-10-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 43688-2024: The quality control method of magnetic resonance imaging or spectrometer

---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.
ICS 17.180.99 CCSL50 National Standards of People's Republic of China Magnetic Resonance Imaging/Spectroscopy Quality Control Methods Released on 2024-03-15 2024-10-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Principle 2 5 Measurement conditions 3 6 Measuring instruments 3 6.1 Standard phantom 3 6.2 Standard coil 3 7 Control Flow 3 7.1 Overview 3 7.2 Personnel Control Process 4 7.3 General Control Flow 4 8 Data Processing 7 8.1 Processing of numerical data 7 8.2 Image Data Processing 7 Appendix A (Informative) A standard phantom for quality control of magnetic resonance imaging equipment 8 Appendix B (Informative) Coil Uniformity Test Method 12 Appendix C (Informative) Model Values 13 Appendix D (Informative) Quality Control Testing Frequency 17 Appendix E (Informative) Selection method of measurement sequence for different functional areas of standard phantom 18 Appendix F (Informative) Image processing method for measurement results 19 Reference 21

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the Chinese Academy of Sciences. This document is under the jurisdiction of the National Technical Committee for Standardization of Photoelectric Measurement (SAC/TC487). This document was drafted by. China Institute of Metrology, Peking University Third Hospital, Shanghai United Imaging Medical Technology Co., Ltd., China Academy of Sciences Aerospace Information Innovation Institute, Guangdong Zhongliang Testing Co., Ltd., Peking University, Beijing University of Aeronautics and Astronautics, Beijing Wandong Medical Science Technology Co., Ltd., Chongqing University, China University of Metrology, Midea Group (Shanghai) Co., Ltd., Beijing Institute of Graphic Communication, Guangdong Provincial Architectural Design Research Institute Co., Ltd., Guangzhou Institute of Metrology and Testing Technology, and Shandong First Medical University. The main drafters of this document are. Liu Zilong, Han Hongbin, Li Yuxiao, Li Jin, Lian Yusheng, Xu Zheng, He Qingyuan, Liu Wenli, Cai Zhe, Lu Yonghong, Wan Yunjie, Li Zhuoran, Wang Pu, Zhang Shuqin, Xing Xiaocong, Wang Zhibo, Wang Xuezheng, Fu Yu, Yuan Lan, Wang Huan, Wang Liwen, Wang Hong, Qiu Jianfeng. Magnetic Resonance Imaging/Spectroscopy Quality Control Methods

1 Scope

This document establishes the principles of quality control (hereinafter referred to as "QC") methods for imagers and spectrometers based on the magnetic resonance principle and describes The measurement conditions, measurement equipment, control process, data processing and other contents of magnetic resonance imaging/spectroscopy quality control methods are discussed. This document applies to the quality control, design, production, and batch verification of magnetic resonance imaging/spectroscopy in the fields of medicine and life sciences. It is used as a reference for quality control in inspection and other links.

2 Normative references

This document has no normative references.

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Using the characteristics of atomic nucleus spin motion, in an external magnetic field, after being excited by radio frequency pulses, a signal is generated, which is detected by a detector and then processed. A measuring instrument that displays images after mathematical conversion. 3.2 Nuclear Magnetic Resonance Spectrometer An instrument for measuring material spectra using nuclear magnetic resonance (NMR) technology. Note 1.In a strong magnetic field, the energy level of the atomic nucleus splits. When absorbing external electromagnetic radiation, the nuclear energy level transition will occur. Capturing this signal can obtain the corresponding The spectrum of the child. Note 2.This document relates to imaging nuclear magnetic resonance spectrometers associated with nuclear magnetic resonance imagers, which use their high-precision relaxation time measurements to achieve Calibration of magnetic resonance imaging equipment. 3.3 protondensity The amount of protons of a certain element per unit volume. Note. When other parameters remain unchanged, the magnetic resonance signal intensity is proportional to the proton density. 3.4 The synthetic magnetization vector generated by the spin of the atomic nucleus in the magnetic field is stimulated by the radio frequency signal to form Larmor precession. The time it takes for the component of the synthetic magnetization vector about its spin axis (Z axis) to change to its initial state (before applying the RF signal) after the signal is removed. Note. The component of the synthetic magnetization vector on its spin axis (Z axis) is restored to 1- e to determine the longitudinal relaxation time value. 3.5 The synthetic magnetization vector generated by the spin of the atomic nucleus in the magnetic field is stimulated by the radio frequency signal to form Larmor precession. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 43688-2024_English be delivered?

Answer: Upon your order, we will start to translate GB/T 43688-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 43688-2024_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 43688-2024_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.