• Title/Summary/Keyword: Vocal

검색결과 1,179건 처리시간 0.032초

발성장애: 후두내시경 검사에서 놓치기 쉬운 성대점막질환 (Dysphonia : Vocal Fold Mucosal Lesions Easily Missed in Laryngoscopy)

  • 김한수
    • 대한후두음성언어의학회지
    • /
    • 제21권1호
    • /
    • pp.17-21
    • /
    • 2010
  • Dysphonia is a medical terminology for voice disorders characterized by hoarseness, harshness, weakness, or even loss of voice ; any impairment in ability to produce voice sounds using the vocal organs, larynx, The causes of dysphonia can be classified into two groups, organic and functional. Functional dysphonia includes spasmodic dysphonia, muscle tension dysphonia, mutational dysphonia and conversion dysphonia, etc, The findings of laryngoscopy in these dysphonia are almost normal. Therefore, physicians should diagnosis these diseases from careful history taking and abundant understandings about the phonation pattern, Organic dysphonia is caused by anatomical problems in the larynx, especially on the vocal fold, Some lesions, however, are not easily found because these lesions are too small, or located on the lower lip of vibrating vocal fold. Laryngopharyngeal reflux induced laryngitis, vascular lesions, sulcus vocalis, vocal atropy including presbylaryngis, and mucosal tears are common lesions easily missed in laryngoscopy, Therefore, a high index of suspicion is necessary to avoid missing vocal fold mucosal lesions, and the strobovideolaryngoscopy is indispensable in making the diagnosis,

  • PDF

악성종양환자와 정상인이 발성한 모음의 좁은대역 스펙트럼값의 상관계수와 절대차이합 비교 (A Comparative Study of Vowels Produced by Normal Subjects and Patients with Malignant Vocal Folds by Correlation Coefficient and Difference Sum of Narrow-band Spectra)

  • 양병곤;왕수건;조철우;김형순;김은지;권순복
    • 음성과학
    • /
    • 제10권4호
    • /
    • pp.189-200
    • /
    • 2003
  • The objective of this study was to examine two new parameters by which we could screen people with malignant vocal folds. The new parameters were the difference sums and Pearson correlation coefficients between adjacent pairs of intensity level matrices of narrow-band spectra. Audio files from the Korean Disordered Speech Database were analyzed by Praat, a speech analysis software, to obtain matrices of 400 intensity levels at 16 time points of each sustained vowel spectra. We limited our study to 12 normal subjects and 20 patients with malignant vocal folds who recorded at least three Korean vowels at a sound-proofed booth in Busan National University Hospital. Results indicated that the average coefficients of the abnormal subjects were much lower than those of the normal subjects while the average difference sums of the patients were much higher than those of the normal ones. Also, we found that the degree of the malignancy of the vocal folds was related to the coefficients and sums. However, some subjects at the initial stages of cancerous vocal folds yielded almost comparable coefficients and difference sums to those of the normal speakers. Further studies on larger databases will be desirable to set certain criteria or threshold levels for screening people with vocal fold diseases.

  • PDF

다중음성치료기법(SK-MVTT)이 성대결절 환자의 음성개선에 미치는 효과: 액센트 기법과의 비교 연구 (The Effects of SK-MVTT on Voice Improvement in Vocal Nodules Patients; Comparison with Accent Method)

  • 김성태;정옥란
    • 음성과학
    • /
    • 제11권4호
    • /
    • pp.101-120
    • /
    • 2004
  • Vocal nodule is one of the representative chronic diseases of vocal folds, and it can be cured by voice therapy. However, the existing therapeutic methods about vocal nodule are in great demand. The purpose of this study was to evaluate the effect of therapeutic methods between Accent method and SK-MVTT (Seong-Tae Kim's multiple voice therapy technique), which was designed by the author. We identified 40 females, who diagnosed having vocal nodules, aged from 21 to 52 years (mean age: 40 years). Twenty females were treated by the SK-MVTT and the other 20 females the Accent method. All subjects received 12 sessions of treatment, and were evaluated after finishing the 6th and the 12th session. The results showed that the SK-MVTT produced a better results compared to the Accent method. The SK-MVTT was better especially at the initial stage of voice therapy compared to the Accent method. In this study, we can suggest that SK-MVTT may be useful in improving the voice qualities of vocal nodule patients. However, more data should be collected and evaluated before it can widely be used in other clinics.

  • PDF

사르코이드증에 의한 일측 성대 마비 1예 (A Case of Unilateral Vocal Fold Paralysis Secondary to Sarcoidosis)

  • 이오형;방주인;이도희;조정해
    • 대한후두음성언어의학회지
    • /
    • 제30권1호
    • /
    • pp.61-64
    • /
    • 2019
  • Sarcoidosis is a multisystem granulomatous disease of unknown etiology. Vocal fold paralysis secondary to sarcoidosis is extremely rare but it can develop as a result of compressive lymphadenopathy, granulomatous infiltration, and neural involvement. We report the case of a 56-year-old woman who presented with unilateral vocal fold paralysis and enlarged supraclavicular lymph nodes. Computed tomography of the neck revealed multiple, enlarged, and matted lymph nodes at the cervical level of IV. An ultrasound-guided core needle biopsy of the lymph node was performed, and a histopathological diagnosis of sarcoidosis was made by validating the presence of noncaseating granuloma. After implementation of steroid therapy, the patient exhibited immediate recovery from vocal fold paralysis. Although an extremely rare disease, sarcoidosis should be included in the differential diagnosis of vocal fold paralysis. Accurate diagnosis and prompt steroid treatment may reduce the morbidity of patients with vocal fold paralysis secondary to sarcoidosis.

성대진동검사의 최신 지견 (Recent Advances in Examination of Vocal Fold Vibration)

  • 이진춘;배인호
    • 대한후두음성언어의학회지
    • /
    • 제32권1호
    • /
    • pp.1-8
    • /
    • 2021
  • Human vocal cords vibrate as quickly as 100-250 times per second, so it is impossible to observe them with normal endoscopic diagnostic equipment. High-speed videolaryngoscopy (HSV) allows the visualization of non-periodic vibratory motion of vocal fold beyond the limitation of videostroboscopy. New developed post-processing methods that converts HSV to two-dimensional videokymography (2D VKG) using U-medical image-processing software can provide quantitative information on vocal fold mucosa vibration. Multifunctional laryngeal examination system is composed of 3 kinds of examinations such as HSV, 2D scanning digital kymography (2D DKG) and line scanning digital kymography (DKG). Evaluation of entire vocal cord vibratory pattern in each cord is possible using 2D DKG and a faster and more reliable quantitative information can be obtained. As this system is used in clinical and research, it is expected to bring much advances to the diagnosis of voice disorders. In this review, I will introduce the principles and advantages on examination of the vocal fold vibration, which is in the spotlight recently, and proceed with the literature review.

후두 종양의 임상적 및 병리조직학적 고찰 (The Clinical and Histopathological Study of Laryngeal mass)

  • 김화성;한경수;이준기;정덕희;박재훈
    • 대한기관식도과학회:학술대회논문집
    • /
    • 대한기관식도과학회 1981년도 제15차 학술대회연제순서 및 초록
    • /
    • pp.9.1-10
    • /
    • 1981
  • 1975년 3月부터 1980년 3月까지 애성을 주소로 하여 본원에 입원하여 수술 받은 183명의 후두 종양 환자에 대한 임상적 통계와, 그중 병리조직학적으로 확진된 88case의 성대 결절과 폴립 환자에서, 성대 결절(30case), 국한성 폴립 (48), 미만성 폴립 (10)을, 임상적인 분류하에 현미경학적 검사로 다음과 같은 결과를 얻었기에 보고하는 바이다. I. 임상적 관찰 1) 전체 183명중 성대 결절 82명 (45%), 후두 폴립 53명 (29%), 삽관후 육아종 3명 (1%), 후두 유두종 18명 (10%), 후두 결핵 2명 (1%), 후두암 25명 (14%)를 차지했다. 2) 남녀 비는 성대 결절 3 : 4, 후두 폴립은 1 : 1, 삽관후 육아종 1 : 2, 후두 유두종 3 : 2, 후두암 11 : 1.성대 결절, 삽관후 육아종은 여자, 후두암과 후두 유두종은 남자에게 많았다. 3) 연령 분포는 성대 결절 20~30대, 후두 폴립 30~40대, 삽관후 육아종 20대, 후두 결핵 10대와 40대, 후두암은 50대이었다. 4) 증상발현으로부터 내원까지의 이환기간의 분포를 보면 성대 결절과 폴립은 5개월~1년, 후두 유두종과 삽관후 육아종은 1년이내, 후두 결핵과 암은 1년~3년이었다. 5) 발생 부위를 보면, 성대 결절, 폴립 후두 유두종은 성대의 전 1/3~중 1/3경계, 삽관후 육아종은 중 1/3~후 1/3, 이었다. 6) 발생측에 있어서 후두 결절과 유두종은 성대의 양측에 오며, 후두 폴립 5 : 3, 삽관후 육아종 2 : 1로 우측에 많았다. 7) 후두 종양의 크기는, 성대 결절 1~2mm(67%), 후두 폴립 3~5mm(42%), 삽관후 육아종 6~10mm(67%), 후두 유두종 1~2mm(39%), 후두 결핵과 암은 10mm 이상의 크기로 산재해 있었다. 8) 후두 종양의 증상은 애성이 90%이상, 연하통은 후두암과 결핵, 호흡곤란은 삽관후 육아종, 후두 유두종, 결핵, 암에서 나타났으며, 그외에 후두의 이물감, 작열감, 소양감 둥의 증상이 있었다. 9) 과거력은 Smoking과 관련 있는 것이 후두 결핵 50%, 후두암 40%이었고, 후두 유두종은 빈번한 상기도 감염이 33%에서 있었다. 10) 직업에서는 어떤 특별한 통계학적 의미를 찾아볼 수 없었다. II. 병리조직학적 관찰 1) 성대 결절과 플립의 상피세포는 중층 편평 상피로 덮여 있으나, 위축, 극세포증, 이상 각화증과 과각화증의 소견을 보이며, 그중 과각화증과 극세포증이 많았다. 2) WHO classification에 의해 섬유성 점액 종양, 혈관성, 유리질성의 4가지 단계로 나누였는데, 성대결절은 점액 종양 병변 60%, 국한성 폴립은 점액 종양 병변과 함께 혈관성, 유리질성 병변이 많았고, 미만성 폴립은 혈관성 병변(80%)이었다. 3) 전 18례의 후두 유두종에서, Exophytic 형이며 편평세포형이 17례(94.5%), 역형이며 이행세포형이 1례 (5.5%)이었다. 4) 후두암은 편평세포 : 선암의 비율이 24 : 1이었다.

  • PDF

성대주입술 후 음향학적 분석결과 비교: 암의 신경 침윤으로 인한 일측성 성대마비 환자와 수술 후 발생한 일측성 성대마비 환자 (Comparison of the Voice Outcome After Injection Laryngoplasty: Unilateral Vocal Fold Paralysis Due to Cancer Nerve Invasion and Iatrogenic Injury)

  • 조용민;최현석;오경호;백승국;우정수;권순영;정광윤;조재구
    • 대한후두음성언어의학회지
    • /
    • 제33권3호
    • /
    • pp.172-178
    • /
    • 2022
  • Background and Objectives Injection laryngoplasty is a common method for treatment of unilateral vocal fold paralysis. Unilateral vocal fold paralysis has various causes, including idiopathic, infection, stroke, neurologic condition, surgery and nerve invasion by cancer. To the knowledge of the authors, there was no study on the relationship between the causes of vocal cord paralysis and the outcome of injection laryngoplasty. Therefore, we tried to investigate the difference in the outcomes of injection laryngoplasty between vocal cord paralysis after surgery group and nerve invasion by cancer group. Materials and Method A retrospective analysis was performed for 24 patients who underwent vocal cord injection due to unilateral vocal cord paralysis caused by surgery or nerve invasion by cancer. The objective quality of the voice was assessed by acoustic voice analysis with the Multi-Dimensional Voice Program. Results Both group showed an improvement of fundamental frequemcy (F0), jitter percent, shimmer (percent), and noise to hearmonic ratio (NHR) after injection laryngoplasty. The vocal cord paralysis due to nerve invasion group showed more improvement in both the mean and median value of F0, shimmer percent and NHR than the vocal cord paralysis due to surgery group, but there was not statistically significant. Conclusion Our study did not show a statistically significant difference in outcome between vocal cord paralysis due to cancer invasion group and surgery group, but statistically tendency was suggested. The vocal cord paralysis due to nerve invasion group showed more improvement in both the mean and median value of acoustic voice analysis than surgery group.

성대 신호를 이용한 인식 시스템 (RECOGNITION SYSTEM USING VOCAL-CORD SIGNAL)

  • 조관현;한문성;박준석;정영규
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
    • /
    • pp.216-218
    • /
    • 2005
  • This paper present a new approach to a noise robust recognizer for WPS interface. In noisy environments, performance of speech recognition is decreased rapidly. To solve this problem, We propose the recognition system using vocal-cord signal instead of speech. Vocal-cord signal has low quality but it is more robust to environment noise than speech signal. As a result, we obtained 75.21% accuracy using MFCC with CMS and 83.72% accuracy using ZCPA with RASTA.

  • PDF

성도 면적 함수와 벡터 양자화를 이용한 음성 인식에 관한 연구 (A Study on Speech Recognition using Vocal Tract Area function and Vector Quantization)

  • 송제혁;김동준;박상희
    • 대한의용생체공학회:학술대회논문집
    • /
    • 대한의용생체공학회 1993년도 추계학술대회
    • /
    • pp.171-174
    • /
    • 1993
  • We propose the vocal tract area function as the feature vector of speech recognition. Vocal tract area function is directly related to speech production. The vocal tract area function is not only showing mechanism of speech production but also can be used as an effective feature vector in speech, recognition in this study.

  • PDF