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1. CN109998539 - Automatic test device and method for auditory brainstem response

Office
China
Application Number 201910362550.0
Application Date 30.04.2019
Publication Number 109998539
Publication Date 12.07.2019
Grant Number 109998539
Grant Date 12.05.2020
Publication Kind B
IPC
A61B 5/0484
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
04Measuring bioelectric signals of the body or parts thereof
0476Electroencephalography
0484using evoked response
A61B 5/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
CPC
A61B 5/7235
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7235Details of waveform analysis
A61B 5/7203
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
72Signal processing specially adapted for physiological signals or for diagnostic purposes
7203for noise prevention, reduction or removal
A61B 5/316
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
316Modalities, i.e. specific diagnostic methods
A61B 5/38
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
316Modalities, i.e. specific diagnostic methods
369Electroencephalography [EEG]
377using evoked responses
38Acoustic or auditory stimuli
A61B 5/125
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
12Audiometering
121evaluating hearing capacity
125objective methods
A61B 5/372
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
24Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
316Modalities, i.e. specific diagnostic methods
369Electroencephalography [EEG]
372Analysis of electroencephalograms
Applicants SHANGHAI NINTH PEOPLE'S HOSPITAL, SHANGHAI JIAOTONG UNIVERSITY SCHOOL OF MEDICINE
上海交通大学医学院附属第九人民医院
Inventors HUA YUNFENG
华云峰
WU HAO
吴皓
WANG HAOYU
王皓煜
LI BO
李孛
DING XU
丁旭
HUANG ZHIWU
黄治物
WANG XUELING
汪雪玲
Agents 上海信好专利代理事务所(普通合伙) 31249
上海信好专利代理事务所(普通合伙) 31249
Title
(EN) Automatic test device and method for auditory brainstem response
(ZH) 一种听性脑干反应自动测试装置
Abstract
(EN) The invention relates to an automatic test device and method for an auditory brainstem response (ABR). On the basis of the calculation of an adaptive averaging method, the average number of records isiteratively increased for the ABR records which are respectively collected under multiple sound intensities, and the signal to noise ratio is increased until ABR signal detection conditions are satisfied, wherein an average curve is obtained according to the ABR records collected in groups and batches, the time lag of the maximum values of cross-correlation functions between the groups is calculated, and it is judged whether or not there are ABR signals having time locking characteristics according to the fact whether or not the deviation of the time lag is within a specified range. The iteration is terminated when the ABR signals are detected or no ABR signals are detected after a maximum iteration number is reached. The minimum sound intensity required to detect the signals is adopted as a hearing threshold value, or the iteration number used under each sound intensity is subjected to function fitting, and the accurate sound intensity corresponding to the hearing threshold value isobtained by means of an interpolation method. According to the automatic test device and method, the efficiency of detecting the threshold value is high, the accuracy rate is approximate to that of manual judgment and is more objective, the repeatability is better, and the repeated collection number of the ABR records can be effectively reduced.
(ZH) 本发明涉及一种听性脑干反应(ABR)自动测试装置,对多个声强下各自采集的ABR记录,基于自适平均法的运算,通过迭代增加记录的平均次数,提高信噪比直至满足ABR信号检出的条件:根据分组批量采集的ABR记录获得平均曲线,计算分组间互相关函数最大值所在的时滞,根据时滞的偏差是否在规定范围内,判断是否存在具有锁时特性的ABR信号。在检出ABR信号或达到最大迭代次数仍无ABR信号检出而终止迭代。通过检出信号所需的最低声强作为听力阈值;或者,对各声强下使用的迭代次数进行函数拟合,并通过内插法获得听力阈值对应的准确声强。本发明检出阈值的效率高,准确率接近人工判断,且更为客观,可重复性更好,可以有效减少ABR记录重复采集的次数。