• Title/Summary/Keyword: bone ultrasound measurement

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Measure of Bone Age through Greulich-Pyle Method, Tanner-Whitehouse Method and Ultrasound Transonic Velocity of Inferior Radiocarpal Joint (골연령의 측정에서 Greulich-Pyle법, Tanner-Whitehouse법, 완관절 초음파 통과속도를 이용한 골연령 측정법의 비교 연구)

  • Lee, Dong-Hyung;Lee, Jin-Yong;Kim, Deog-Gon
    • The Journal of Pediatrics of Korean Medicine
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    • v.22 no.2
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    • pp.69-80
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    • 2008
  • Objectives : The purpose of this study was to evaluate the correlation of 3 methods of bone age measurements. Methods : 102 children(49 boys, 53 girls) were involved in this study. We measured the height, weight and bone age based when they visited for the first time. We measured bone age using BoneAge of Sunlight Co.,Ltd. Two of the bone age measurement methods, Greulich-Pyle and Tanner-Whitehouse, were used to analyze the left dorsopalmar hand-wrist radiographs of 102 children who visited in Department of Pediatrics, O O University Oriental Hospital. This study was designed to investigate the correlation of the bone age between two methods. Results : The bone ages were related with age, height, weight and BMI according to this study(P<0.01). Each bone age assessment method had statistically significant correlation to each other(P<0.01). Conclusions : The ultrasound transonic velocity of inferior radiocarpal joint will become a sufficient diagnostic tool of bone age assessment if measurement error can be minimized by proper effort.

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A Study on Method for Improving Reproducibility in the Ultrasonic Measurement of Bone Mineral Density (초음파 골밀도 측정에서 재현성 향상 방법에 관한 연구)

  • Shin, Jeong-Sik;Ahn, Jung-Hwan;Kim, Hwa-Young;Kim, Hyung-Jun;Han, Seung-Moo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.29 no.10 s.241
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    • pp.1430-1437
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    • 2005
  • It is very important to achieve a high reproducibility in the ultrasonic measurement of bone mineral density. In this study, we examined number of sampling waveform, control of temperature, diameter of region of interest as factors to improve reproducibility. We decided the optimal number of waveforms to be converted to frequency domain as period of 1. We have minimized the effects of variable temperature and constrained generation of micro bubble by keeping temperature within a range of $32\pm0.5^{\circ}C$ with a precise temperature controlling algorithm. We also found the optimal diameter of region of interest to be 13mm. In this paper, we demonstrated the improved reproducibility by controlling various factors affecting the ultrasonic measurement of bone mineral density.

Automatic Detection Method of the Region of Interest in the Measurement of Bone Mineral Density by Ultrasound Imaging (초음파 영상에 의한 골밀도 측정에서 관심영역의 자동 검출방법)

  • 신정식;안중환;한은옥;김형준;한승무
    • Journal of the Korean Society for Precision Engineering
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    • v.21 no.11
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    • pp.200-208
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    • 2004
  • In ultrasonic bone densitometry, the positioning of measurement site is decisive in precision and reproducibility. In this study, automatic Region of Interest (ROI) detection algorithm is suggested and adopted the method using the local minimum value by ultrasonic image. The preprocess before the local minimum method extracts out the bone area and calculates the geometrical information of bone. The developed ROI detection algorithm was applied to the clinical test for the subject of 305 female patients in the range of 22-88 years old. As the results, the accuracy of the algorithm was shown to be 98.3%. It was also found that bone density parameter was significantly correlated with age(r=0.85, p<0.0001).

Study on enhancing the ultrasonic image for bone densitometry (골밀도 측정을 위한 초음파 영상 개선에 관한 연구)

  • Shin, Jung-Sik;Ahn, Jung-Hwan;Kim, Hyung-Joon;Kim, Hwa-Young;Han, Seung-Moo
    • Journal of the Korean Society for Precision Engineering
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    • v.22 no.8 s.173
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    • pp.182-191
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    • 2005
  • It is very important to obtain a high quality of bone image for an accurate ultrasonic measurement of bone mineral density. In this study, we suggested a technique to acquire an optimal image by adapting an acoustic lens and a properly selected ultrasonic probe. Also, we have applied an image processing algorithm with which automatically makes a decision of brightness and contrast of image by generating threshold level, a composition of ultrasonic data, an elimination of noise using modified median filter, and a real time interpolation. We could confirm much improved resolution of bone image with acoustic lens attached to the ultrasonic probe and with the image processing algorithm suggested in this study. Therefore, it became possible to precisely diagnose the osteoprosis using ultrasonic imaging technique.

Study of Ultrasound Imaging Technique for Diagnosing Osteoporosis (골다공증 진단을 위한 초음파 영상화 진단 기법 연구)

  • Kim, H.J.;Han, S.M.;Lee, J.H.;Lee, M.R.
    • Journal of the Korean Society for Nondestructive Testing
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    • v.22 no.4
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    • pp.386-392
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    • 2002
  • Ultrasonic has been proposed as an attractive means of detecting bone loss. There have been several commercial ultrasound devices developed for measuring the heel to predict fracture at other bones. However, these devices select only single point of heel bone as measurement site. It causes poor assessment of bone quality due to the error of transducer positioning. In an effort to improve current ultrasound systems, we evaluated the linear scanning method which provides better prediction of bone quality and an accurate image of bone shape. The system used in this study biaxially scans a heel bone using automated linear scanning technique. The results demonstrated that the values of ultrasound parameters varied with different positions within bone specimen. It has been also found that the linear scanning method could better pre야ct bone quality, eliminating the error of transducer positioning.

A study on growth and development of children by Ultrasound transonic velocity of inferior radiocarpal joint (완관절 초음파통과속도를 이용한 골연령 측정값과 X-ray영상을 이용한 골연령 측정값의 비교)

  • Koh, Duck-Jae;You, Han-Jung;Lee, Jin-Yong;Kim, Deog-Gon;Yoon, Kyung-Hee
    • The Journal of Pediatrics of Korean Medicine
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    • v.19 no.2
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    • pp.165-174
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    • 2005
  • Objectives : The purpose of this study was to suggest a new method for measurement of children's growth development Ultrasound transonic velocity of inferior radiocarpal joint has some advantages that it is harmless to human body and apply a new analysis algorithm, it can be used for the diagnosis of bone age. Methods: This clinical study have been carried out with the 117 case(male 68, female 49) of the children aged 5 to 16 years old who visited in Department of Pediatrics, ${\bigcirc}{\bigcirc}$ university Oriental Hospital. Bone maturity is measured by Ultrasound transonic velocity and X-ray image of growth plate in inferior radiocarpal joint. This study were designed to investigate the relationship of the bone age by Ultrasound transonic velocity and X-ray image. Result & Conclusion : The maturity of growth plate of inferior radiocarpal joint was correlated with age, height, weight, BMI in this study(P<0.001). The Ultrasound transonic velocity of inferior radiocarpal joint are sufficient diagnostic worth as an index to predict bone maturity.

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Nutritional Status and Related Factors of Residents Aged Over 50 in Longevity Areas - II, Effect of Dietary Factors on Bone Ultrasound Measurements in Aged Men - (고령인구 비율이 높은 지역 장년, 노년층의 건강.영양상태 및 이에 영향을 미치는 인자에 관한 연구 - II. 남자의 골밀도와 이에 영향을 미치는 식이요인분석 -)

  • Choe Jeong-Sook;Kwon Sung-Ok;Paik Hee-Young
    • Journal of Nutrition and Health
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    • v.39 no.2
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    • pp.171-183
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    • 2006
  • This study was conducted to examine dietary factors affecting bone status in the rural aged men. Quantitative ultrasound measurements (QUS) of bone, that may reflect certain architectural aspects of bone, have been shown to be associated with bone mineral density and fracture. Information of diet and anthropometry was collected in 164 aged men. Dietary intake data were obtained by 24-hour recall method. Measurements of the speed of sound (SOS, m/s), at distal radius, mid-tibia, phalanx, were performed using Omnisense 7000S analyzer (Sunlight Ltd., Tel Aviv, Israel). T-scores for bone SOS measurements at distal radius, mid-tibia and phalanx were 0.60, 0.03 and -0.42 respectively. The prevalence of osteopenia by use of the WHO criteria was 17.7% at the mid-tibia and 25.3% of the subjects at the distal radius. Age were negative association with bone SOS at three sites. Osteopenia group of radius were significantly lower in total foods and vegetable intakes than normal group. After adjusted for age, vegetable intakes were significantly and positively related to bone SOS at the radius. The bone SOS of the tibia were significantly and positively related to vegetable protein, iron, folate and vegetable intakes, but negatively related to fat intakes. Multiple regression analysis showed that bone SOS of tibia was positively associated with folate intakes. Vegetable intakes were positively associated with the bone SOS at three sites. These results indicate that the consumption of vegetables, sources of folate, may have a effect on bone status of men.

Ultrasonic Bone Densitometer by Measuring the Speed of Sound (SOS를 이용한 초음파 골밀도 측정 장치)

  • Jung, Min-Sang;Hahn, Eun-Joo;Kim, Yeong-Sik
    • Progress in Medical Physics
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    • v.18 no.3
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    • pp.172-178
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    • 2007
  • An ultrasonic bone densitometer has been developed by measuring speed of sound signal transmitted and received on the skin, not through the horizontal axis but through the vertical one in tissue. The SOS(speed of sound) method measuring the time difference between the ultrasound signals reflected from the both sides of surface of bone could produce more precise result compared with the BUA(broadband ultrasound attenuation) method measuring the frequency difference. Middle finger is selected to be the best measurement position in order to increase the accuracy, after due consideration that the thickness of flesh at the down part of thumb shows too much variation although the ratio of the receiving signal is higher than the other fingers. The measured value by using SOS method shows almost the same result as compared with the conventional DEXA method.

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Effects on Changes of the Speed of Sound and the Broadband Ultrasound Attenuation on the Medium's Infilling in Additive Manufacturing Method of 3D Printing (3차원 프린팅 적층가공 방식에서 매질 내부 충전이 초음파 속도와 감쇠에 미치는 영향)

  • Seoung, Youl-Hun
    • Journal of radiological science and technology
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    • v.41 no.1
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    • pp.53-60
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    • 2018
  • The purpose of this study was investigating the effect of 3D printing technology that changes the speed of sound (SOS) and the broadband ultrasound attenuation (BUA) by controlling the density of the media phantom. We used 3D printers which called additive manufacturing (AM) by using material with polylactic acid (PLA). The inside of the medium phantom was filled crossly with 100%, 90%, 80%, 70%, 60%, and 50% of the material. The ultrasonic instrument measured the SOS and the BUA using a 0.55 MHz ultrasound output in opposing mode with a pair of transducers. As a result, the density of the medium phantoms with the SOS showed very high correlation (r = 0.944), but the SOS showed very low correlation (r = 0.500). It is expecting that the manufacturing and measurement method of the medium phantom using 3D printing technology will be used as basic data for ultrasonic bone mineral density.

Osteoporosis Measured by Quantitative Ultrasound and Its Risk factors in Middle-aged Women, Gyeonggi-do, Korea (중년여성의 정량적 초음파(Quantitative Ultrasound)로 측정한 골다공증 정도와 위험인자)

  • Jeong, Geum-Hee;Yang, Soon-Ok;Baik, Sung-Hee
    • Journal of muscle and joint health
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    • v.12 no.1
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    • pp.39-47
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    • 2005
  • Purpose: To identify Osteoporosis and the related risk factors in middle-aged women, the descriptive survey was done. Method: The subjects were measured in 465 residents who were 40-60 aged healthy women. They underwent ultrasound measurement and health examination in G city's Health Center in Gyeonggi-do, Korea from July 2000 to March 2001. The self-reported questionnaire consisted of total 17 items about risk factors related to osteoporosis. The evaluation of bone density was based on ultrasound measurements of right heel. All data were analyzed by SAS-PC Program. Result: Mean age of the subjects was 46.7. Mean T score related to bone density was -1.30, ranged from -3.52 to 3.06. In diagnosis classification according to T score, 74.8% of subjects was normal, 12.9% was osteopenia, 12.3% was osteoporosis. Among risk factors, there were significant differences by age (t=15.35. p=0.000), parity (F=12.81, p=0.000), menopause status (t=22.05, p=0.000), period after menopause (F=5.20, p=0.006). The higher frequency of delivery, postmenopausal and longer period after postmenopause of subjects had the lower the bone density. Conclusion: It would be necessary to develop and apply the community-based health promotion program for middle-aged women to prevent osteoporosis.

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