YY/T 1896-2023 in English

VALID

Method for defining the wavelength range of spectral radiation therapy equipment

Issued on:2023-06-20
Implemented on:2024-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	YY/T 1896-2023
Document status:	VALID
Title in English:	Method for defining the wavelength range of spectral radiation therapy equipment
Title in Chinese:	光谱辐射治疗设备波长范围界定方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2023-06-20
Implemented on:	2024-07-01
ICS Classification:	11.040.60-Therapy equipment
Chinese Classification:	C42-Physiotherapy and TCM instrument and equipment
Professional Classification:	YY-Pharmaceutics
Related Keywords:	spectral radiation therapy equipment spectral radiation therapy equipment introduction standard background light therapy equipment ratio wavelength range ultraviolet light therapy equipment
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Applicable scope of fluorescence molecular spectroscopy methods Method for defining wavelength range of spectral radiation therapy equipment Adjustable range of chromatographic methods What are the methods for measuring the wavelength of light waves? Standard spectral range Scope of application of qualitative chromatographic methods UAV radiation range calculation method Spectral range detection execution energy spectroscopy Near infrared light wavelength range Spectral range test Large equipment definition yy/t1914-2023 yy/t1889-2023 yy/t1876-2023 yy/t1901-2023 yy/t1915-2023 Optical wavelength stability test method How to select transmittance wavelength yy-t1920-2023 yy/t1867-2023 yy/t1908-2023 yy/t 0906 2023

本文件规定了光谱辐射治疗设备的波长范围界定方法。
本文件适用于临床上波长为180nm-3000nm，利用包括可见光、红外光、紫外光等非相干光进行治疗的设备。

Introduction

Standard Background and Scope of Application

This standard was proposed by the State Food and Drug Administration and is applicable to incoherent light therapy equipment with a wavelength of 180nm~3000nm, including visible light, infrared light and ultraviolet light therapy equipment. The standard systematically regulates the wavelength definition method of spectral radiation therapy equipment for the first time.

Core Terminology Analysis

Terms	Definition Points	Application Scenarios
RMS Spectral Width	The weighted average width of the spectrum based on the Gaussian function, σ_rms²=∫(λ-λ₀)²P(λ)dλ/∫P(λ)dλ	Accurately reflects the spectral energy distribution characteristics
-3dB Spectral Width	The wavelength interval when the peak intensity drops by 50% (full width at half maximum)	Main parameters of laser equipment
Specific dose ratio wavelength range	The minimum wavelength range that contains a specific ratio (e.g. 80%) of the total radiation dose	Key indicators for therapeutic dose control

Comparison of wavelength definition methods

4.2.1 Spectral peak and spectrum width method

Applicable to single-peak spectrum equipment, by determining the peak wavelength A and the RMS/-3dB spectrum width A₁-A₂ to define the range

4.2.2 Specific intensity ratio method

Using a specific ratio (e.g. 10%) of the peak intensity P as the threshold, select the maximum interval wavelength points A₁-A₂

4.2.3 Specific dose ratio method

The minimum wavelength range is determined by the cumulative radiation dose ratio (such as 90%), which directly affects the evaluation of treatment effect

Standard implementation recommendations

5.1 Principle of multi-method combination

For composite spectral equipment, it is recommended to use the 4.2.1+4.2.2 combination method to describe different spectral components respectively

Test condition specifications

When measuring, ensure that:
1. The equipment is in standard working mode
2. Use a calibrated spectroradiometer
3. The ambient temperature is 23±5℃

Technical document requirements

Product registration should include:
- Description of the definition method used
- Spectral test raw data
- Wavelength range verification report

Technology Evolution Analysis

This standard introduces the concept of RMS spectrum width into the field of medical devices for the first time, which can better reflect the true characteristics of wide-spectrum devices compared to the traditional -3dB spectrum width method. Main updates of the 2023 version:
1. Added a method for defining specific dose ratio
2. Clarified the processing principles of multi-peak spectra
3. Standardized the test data recording format

More samples: DL/T 5154-2012 QC/T 942-2021 DL/T 368-2010

Sample only — not a preview of YY/T 1896-2023

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