- Analysis of Quantization Noise in Magnetic Resonance Imaging Systems
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Ahn CB
- KMID: 2041245
- J Korean Soc Magn Reson Med.
- 2004 Jun;8(1):42-49.
PURPOSE: The quantization noise in magnetic resonance imaging (MRI) systems is analyzed. The signal-to-quantization noise ratio (SQNR) in the reconstructed image is derived from the level of quantization in the... -
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- Speech Recognition in Real-Life Background Noise by Young and Middle-Aged Adults with Normal Hearing
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Lee JY, Lee JT, Heo HJ, Choi CH, Choi SH, Lee K
- KMID: 2286264
- J Audiol Otol.
- 2015 Apr;19(1):39-44.
- doi: 10.7874/jao.2015.19.1.39
BACKGROUND AND OBJECTIVES: People usually converse in real-life background noise. They experience more difficulty understanding speech in noise than in a quiet environment. The present study investigated how speech recognition... -
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- Optimization of Subtraction Brain Perfusion SPECT with Basal / Acetazolamide Consecutive Acquisition
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Lee DS, Lee TH, Kim KM, Chung JK, Lee MC, Koh CS
- KMID: 2256966
- Korean J Nucl Med.
- 1997 Sep;31(3):330-338.
This study investigated the method to adjust acquisition time(a) and injection dose(i) to make the best basal and subtraction images in consecutive SPECT. Image quality was assumed to be mainly... -
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- Dimensional contraction by principal component analysis as preprocessing for independent component analysis at MCG
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Iwai M, Kobayashi
- KMID: 2394680
- Biomed Eng Lett.
- 2017 Aug;7(3):221-227.
- doi: 10.1007/s13534-017-0024-5
We propose a noise reduction method for magnetocardiograms (MCGs) based on independent component analysis (ICA). ICA is useful to separate the noise and signal components, but ICA-based automatic noise reduction... -
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- Effects of Various Background Noises on Speech Intelligibility of Normal Hearing Subjects
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Lee SH, Shim HJ, Yoon SW, Lee KW
- KMID: 2277030
- Korean J Otorhinolaryngol-Head Neck Surg.
- 2009 Apr;52(4):307-311.
- doi: 10.3342/kjorl-hns.2009.52.4.307
BACKGROUND AND OBJECTIVES: In auditory tests, several kinds of background noises have been used ; multitalker babble noise, speech noise and white noise, etc. The aim of the present study... -
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- Adaptive filtering method for EMG signal using bounded range artificial bee colony algorithm
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Verma AR, Singh Y, Gupta B
- KMID: 2439178
- Biomed Eng Lett.
- 2018 May;8(2):231-238.
- doi: 10.1007/s13534-017-0056-x
In this paper, an adaptive artefact canceller is designed using the bounded range artificial bee colony (BR-ABC) optimization technique. The results of proposed method are compared with recursive least square... -
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- Effects of Workplace Noise and Hearing Protective Devices on Worker's Speech Intelligibility
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Park HO, Sim CS, Kwon JK, Kim KS, Kwon YJ, Kim NJ, Seo MS, Lee JH
- KMID: 2075060
- Korean J Occup Environ Med.
- 2010 Jun;22(2):154-165.
OBJECTIVE: The objective of this study was to evaluate the degree of intelligible speech in workers wearing hearing protective devices and the differences in background noise type. METHODS: A total 82... -
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- Availability of Korean Hearing in Noise Test (KHINT) in Children
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Lim HW, Hong SM, Choi SW, Jung JW, Shin J, Chae SW
- KMID: 2277256
- Korean J Otorhinolaryngol-Head Neck Surg.
- 2011 Jul;54(7):462-466.
- doi: 10.3342/kjorl-hns.2011.54.7.462
BACKGROUND AND OBJECTIVES: Individuals with similar degrees of hearing impairment frequently show significantly different speech understanding in noise stimulation. A Korean version of the Hearing in Noise Test (KHINT) has... -
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- Quantitative Conductivity Estimation Error due to Statistical Noise in Complex B1+ Map
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Shin J, Lee J, Kim MO, Choi N, Seo JK, Kim DH
- KMID: 2206927
- J Korean Soc Magn Reson Med.
- 2014 Dec;18(4):303-313.
- doi: 10.13104/jksmrm.2014.18.4.303
PURPOSE: In-vivo conductivity reconstruction using transmit field (B1+) information of MRI was proposed. We assessed the accuracy of conductivity reconstruction in the presence of statistical noise in complex B1 +... -
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- Comparison of 50% Recognition Signal-to-Noise Ratio Using a Multi-Talker Babble Noise in Normal-Hearing and Hearing-Impaired Individuals
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Park CH, Lee SH, Shim HJ, Lee SJ, Yoon SW, Lee KW
- KMID: 2141178
- Korean J Otorhinolaryngol-Head Neck Surg.
- 2008 Oct;51(10):866-871.
BACKGROUND AND OBJECTIVES: The most common complaint of individuals with hearing impairment is the difficulty in understanding speech against background noise. In our previous study, we carried out a speech-in-noise... -
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- High field strength magnetic resonance imaging of abdominal diseases
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Rha SE
- KMID: 2064722
- J Korean Med Assoc.
- 2010 Dec;53(12):1065-1073.
- doi: 10.5124/jkma.2010.53.12.1065
Due to the development of dedicated receiver coils for 3 tesla (T) magnetic resonance (MR) imaging and increased gradient performance, 3T MR imaging of the abdomen is rapidly becoming a... -
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- Factors Affecting Sentence-in-Noise Recognition for Normal Hearing Listeners and Listeners with Hearing Loss
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Hwang JS, Kim KH, Lee JH
- KMID: 2386986
- J Audiol Otol.
- 2017 Jul;21(2):81-87.
- doi: 10.7874/jao.2017.21.2.81
BACKGROUND AND OBJECTIVES: Despite amplified speech, listeners with hearing loss often report more difficulties understanding speech in background noise compared to normal-hearing listeners. Various factors such as deteriorated hearing sensitivity,... -
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- A compact-sized surface EMG sensor for myoelectric hand prosthesis
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Prakash A, Sharma S, Sharma N
- KMID: 2470040
- Biomed Eng Lett.
- 2019 Nov;9(4):467-479.
- doi: 10.1007/s13534-019-00130-y
Myoelectric prosthesis requires a sensor that can reliably capture surface electromyography (sEMG) signal from amputees for its controlled operation. The main problems with the presently available EMG devices are their... -
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- Perception of Tamil Mono-Syllabic and Bi-Syllabic Words in Multi-Talker Speech Babble by Young Adults with Normal Hearing
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Gnanasekar S, Vaidyanath R
- KMID: 2460018
- J Audiol Otol.
- 2019 Oct;23(4):181-186.
- doi: 10.7874/jao.2018.00465
BACKGROUND AND OBJECTIVES: This study compared the perception of mono-syllabic and bisyllabic words in Tamil by young normal hearing adults in the presence of multi-talker speech babble at two signal-to-noise... -
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- Removal of Edge Artifact due to Partial Volume Effect in the Adaptive Template Filtering
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Ahn CB, Song YC
- KMID: 1560562
- J Korean Soc Magn Reson Med.
- 2000 Dec;4(2):120-127.
Adaptive template filtering has been proposed recently for enhancement of signal-to-noise ratio without loss of resolution. In the adaptive template filtering, an optimal template among multiple templates is selected, then... -
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- Comparison of Single-Task versus Dual-Task for Listening Effort
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Kwak C, Han W
- KMID: 2415945
- J Audiol Otol.
- 2018 Apr;22(2):69-74.
- doi: 10.7874/jao.2017.00136
BACKGROUND AND OBJECTIVES: Depending on the kind of task and/or material, listeners sometimes need to pay attention to understand communication. The present study aimed to estimate a listener’s amount of... -
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- Flow Signal Characteristics in 3 Dimensional Time of Flight MR Angiography Using Flow Phantom
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Choi CG, Han MH, Park JH, Chang KH
- KMID: 2201507
- J Korean Radiol Soc.
- 1997 May;36(5):729-736.
PURPOSE: The purpose of this study was to analyze the flow signal chracteristics of 3 dimensional time of flight MR angiography (3D TOF MRA) by using a flow phantom model. MATERIALS... -
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- Role of Active Listening and Listening Effort on Contralateral Suppression of Transient Evoked Otoacousic Emissions
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Kalaiah MK, Theruvan N, Kumar K, Bhat JS
- KMID: 2375759
- J Audiol Otol.
- 2017 Apr;21(1):1-8.
- doi: 10.7874/jao.2017.21.1.1
BACKGROUND AND OBJECTIVES: The present study aimed to investigate the effect of active listening and listening effort on the contralateral suppression of transient evoked otoacoustic emissions (CSTEOAEs). SUBJECTS AND METHODS: Twenty... -
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- Coded Aperture Gamma Camera for Thyroid Imaging: Monte Carlo Simulation
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Beak CH, Lee SJ, Chung YH
- KMID: 2243966
- Korean J Med Phys.
- 2008 Dec;19(4):247-255.
A coded aperture camera has been developed to improve the signal-to-noise ratio (SNR) while keeping the spatial resolution of a pinhole gamma camera. The purpose of this study was to... -
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- SNR and ADC Changes at Increasing b Values among Patients with Lumbar Vertebral Compression Fracture on 1.5T MR Diffusion Weighted Images
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Cho JH, Park CS, Lee SY, Kim BH
- KMID: 2243951
- Korean J Med Phys.
- 2010 Mar;21(1):52-59.
To examine among patients with vertebral compression fracture the extent to which signal-to-noise ratio (SNR) and Apparent Diffusion Coefficient (ADC) values at the lumbar vertebral compression fracture site vary on... -
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