• Title, Summary, Keyword: ultrasound

Search Result 2,724, Processing Time 0.048 seconds

Development of Low Price Ultrasound Image Processing System (저가형 초음파 영상처리 장치의 개발)

  • Lee, Gun-You;Jun, Yang-Bae;Kim, Jeong-Hoon;Kim, Sang-Bong
    • Proceedings of the KSME Conference
    • /
    • /
    • pp.53-58
    • /
    • 2001
  • In this paper, a low price ultrasound image processing system is developed using DSP and PC. Ultrasound for image is generated by the 32-channel transducer. Ultrasound image is captured by DSP instead of the private image grabber board. Display of image and image processing algorithms are performed by PC. The image processing algorithms based on GUI are realized by software. So users without knowledge of image processing can perform the image enhancement more easily.

  • PDF

Ultrasound-guided Intervention in Lumbar Spine (요추부 초음파 유도하 중재술)

  • Moon, Sang Ho
    • The Journal of Korean Orthopaedic Ultrasound Society
    • /
    • v.6 no.2
    • /
    • pp.81-93
    • /
    • 2013
  • This review was described to investigate the feasibility of using ultrasound as an image tool for interventions of lumbar spine. This article will first provide an overview of lumbosacral spine surface anatomy and sonoanatomy. A detailed understanding of anatomy is critical for interpretation of ultrasound and procedural performance at spine. Fluoroscopy is most commonly used in interventional spine procedures, but radiation exposure is the major concern when obtaining fluoroscopic images. Ultrasound is radiation-free, is easy to use, and can provide real-time images with high accuracy. Also this device can be used in virtually any clinical setting. Ultrasound guidance offers a reliable alternative to fluoroscopy or computed tomography for lumbar interventions and can be safely performed without radiation exposure.

  • PDF

The Use and Findings of Ultrasound in the Elbow Joint (주관절의 초음파 소견 및 이용)

  • Bae, Jung Yun;Lee, Seung-Jun;Lee, Kun Woo
    • The Journal of Korean Orthopaedic Ultrasound Society
    • /
    • v.6 no.2
    • /
    • pp.94-100
    • /
    • 2013
  • Musculoskeletal ultrasound has unique advantages that may be free from exposure to radiation, low price compared to MRI, outpatient procedure that can be easily accessible, and better accuracy combined with physical examination. Dynamic ultrasound performed with stress tests are known to be useful for detecting the hidden lesions in the tendons, ligaments, nerves. Ultrasound in the elbow can be used easily in the outpatient for evaluation of the joint surface and synovial space; diagnosis for tendon diseases such as lateral epicondylitis, medial epicondylitis and morbidity of peripheral nerves; guide for anterior-posterior bursal and intra-articular injections.

  • PDF

The Use of Real-Time Ultrasound Imaging for Feedback during Abdominal Hollowing (복부 할로잉 운동에서 실시간 초음파 영상 피드백의 사용 효과)

  • Kwon, Nam-Hee;Lee, Hyun-Ok;Park, Du-Jin
    • Journal of the Korean Society of Physical Medicine
    • /
    • v.6 no.3
    • /
    • pp.303-310
    • /
    • 2011
  • Purpose : This study examined the feedback effect of real-time ultrasound imaging on the thickness of transversus abdominis(TrA), internal abdominal oblique(IO) and external abdominal oblique(EO) during abdominal hollowing exercise(AHE) in crook lying. Methods : We performed this study on 30 healthy men who voluntarily consented to participate in this study after listening to its purpose and method. All subject were divided into an experimental group(n=15) with using the real-time ultrasound imaging feedback(RUIF) and a control group(n=15) without the RUIF The thickness changes between rest and AHE were compared between the two groups in crook lying. Results : The difference in TrA and EO thickness changes between the groups were significant in crook lying (p<0.05). Conclusion : The group with using real-time ultrasound imaging feedback showed a higher increase in the thickness of TrA than the other group without real-time ultrasound imaging feedback. And the thickness of EO in the group with using real-time ultrasound imaging feedback decreased than the other group without real-time ultrasound imaging feedback. If the muscle thickness can be regarded as an indicator of muscle activity, RUIF will be helpful for inducing the independent activity of TrA by reducing the activities of abdominal muscles such as EO.

A Study on the Safety and Performance Test Guideline of Low Intensity Therapeutic Ultrasound Device (저강도 초음파 치료기기의 안전성 및 성능평가 가이드라인 수립을 위한 연구)

  • Kim, Ju-Young;Kim, Jae-Young;Noh, Si-Cheol;Choi, Heung-Ho
    • Journal of Biomedical Engineering Research
    • /
    • v.36 no.5
    • /
    • pp.162-168
    • /
    • 2015
  • In this study, we suggested the performance and safety testing guideline for low intensity pulsed ultrasound (LIPUS) represented by the ultrasound fracture treatment device and cartilage treatment device and low intensity focused ultrasound (LIFU) represented by ultrasonic face lifting device. For these study, the international standards and management regulations of Korea, Japan and United State were analyzed. And the usefulness and applicability were evaluated by testing with commercial equipment and reflecting the views of the industry and experts. As a result of this study, the safety and performance test guidelines for low intensity therapeutic ultrasound device were proposed by presenting the 10 items for LIPUS and 12 items for LIFU. The suggested guidelines are considered a high utilization in the domestic testing and approval authorities. And they are also thought to be useful to new technology development.

Development of Flexible Ultrasound System for Elastography (탄성 영상법 개발을 위한 유연성 높은 초음파 시스템의 구현)

  • Kim, D.I.;Lee, S.Y.;Cho, M.H.
    • Journal of Biomedical Engineering Research
    • /
    • v.33 no.1
    • /
    • pp.32-38
    • /
    • 2012
  • Recently, several ultrasound imaging techniques for tissue characterization have been developed. Among them, ultrasound elastography is regarded as the most promising modality and has been rapidly developed. One of ultrasound elastography techniques is shear modulus imaging. Normal and cancerous tissues show big difference of shear moduli and they have good image contrast. However shear wave elastography requires more complicated hardware and more computations for image reconstruction algorithm. Therefore new efficient techniques are being developed. In this paper, we have developed a very flexible ultrasound system for elastography experiments. The developed system has capabilities to acquire ultrasound RF data of all channels and generate arbitrary ultrasound pulse sequences. It has a huge amount of memories for RF data acquisition and a simple and flexible pulse generator. We have verified the performance of the system showing conventional B-mode images and preliminary results of elastography. The developed system will be used to verify our own reconstruction algorithm and to develop more efficient elastography techniques.

Modified Piezoelectric Ceramics for Portable Ultrasonic Medical Probe Application (휴대용 의료 초음파 프로브 적용을 위한 압전체 제조 및 특성)

  • Kang, Dong Heon;Chae, Mi Na;Hong, Se Won
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
    • /
    • v.29 no.8
    • /
    • pp.483-488
    • /
    • 2016
  • Ultrasound imaging by using piezoelectric materials, such as lead zirconium titanate (PZT) has been one of the most preferred modes of imaging in the medical field due to its simple, low cost and non-ionizing radiation in comparison to other imaging techniques. Recently, the market demand for portable ultrasound is becoming larger with applications in developing countries, disaster area, military, and emergency purposes. However, most of ultrasound probes used is bulky and high power consumable, so unsuitable for such applications. In this study, the 3 layered ceramic specimen consisted of 128 pitches of $420{\mu}m$ in width and $450{\mu}m$ in thickness were prepared by using the Ti-rich PZT compositions co-fired at $1,050^{\circ}C$. Their electrical and ultrasound pulse-echo properties were investigated and compared to the single layer specimen. The 3 layered ultrasound probe showed 1.584 V of Vp-p, which is 3.2 times higher than single layered one, implying that it would allow effectively such a portable ultrasound probe system. The result were discussed in terms of higher capacitance, lower impedance and higher dielectric coefficient of the 3 layered ultrasound probe.

Age Related Analysis of Ultrasound Images of Normal Skeletal Muscle (연령에 따른 정상 골격근의 초음파 영상 분석)

  • Jeong, Jin-Gyu;Kim, Kye-Yoep;Kim, Jong-Man;Ki, Tae-Youl
    • Physical Therapy Korea
    • /
    • v.13 no.1
    • /
    • pp.47-53
    • /
    • 2006
  • Since ultrasound has different reflections depending on components of organization, analysis of ultrasound images of skeletal muscle can offer both quantitative and qualitative reports as concerns skeletal muscle structure. This study is focused on the ultrasound method for evaluating the structural characteristics of skeletal muscle and also conducted to examine its practicality. After obtaining images of the elbow flexors from an ultrasound image device with 88 normal subjects whose ages were between twenty and seventy years old (44 men and 44 women), muscular density and white area index (WAI) which indicated structural characteristics of skeletal muscle were analyzed with gray scale analysis. The study examined correlations between subject's age and items which obtained from measuring ultrasound images and the differences in relations to sex and age. Muscular density and WAI had a high correlation with age and were significantly increased in men and women with greater age. The quantitative evaluation method of skeletal muscle structure which analyzed the ultrasound images has high practicality because it is a non-invasive method which complements physical therapy diagnosis and research methods and promotes functionality evaluation.

  • PDF