• The Journal of Korean Orthopaedic Ultrasound Society
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• v.2 no.2
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• pp.107-112
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• 2009

Ultrasonographic examination for the rotator cuff disease is dynamic noninvasive study and the results is comparable to MRI on the behalf of recent development. It also can be used as a tool for guided injection and follow up study after rotator cuff repair. The development of equipment, learning curve and knowledge for the disease are the three most important factors for the critical role of the ultrasonography in the diagnosis and treatment of the rotator cuff disease.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.4 no.2
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• pp.59-65
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• 2011

Purpose: To determine the clinical efficacy of the ultrasonography (US) for the diagnosis of the soft tissue masses comparing to the clinical diagnosis through the physical examination. Materials and Methods: 83 consecutive patients with palpable soft tissue masses were presented retrospectively. On the basis of the pathological diagnosis after the operation, the diagnostic accuracies were evaluated the cases diagnosed by history taking and physical examination, and the cases diagnosed by US before the operation. Results: The diagnostic accuracy of the cases using US was higher(86.7%) than that of the cases using physical examination and history taking. The accuracy of US of the epidermal inclusion cyst was 71.4%, ganglion cyst 85.7%, lipoma 88.6%, respectively. Accurate diagnosis were made 54 cases with 65.1% sensitivity in the cases diagnosed by history taking and physical examination. In this case, its accuracy of the ganglion cyst was 56.0%, and the lipoma was 67.9%. Conclusion: US is a useful diagnostic tool for the diagnosis of the palpable soft tissue masses before the operation.

• Korean Journal of Clinical Laboratory Science
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• v.55 no.4
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• pp.269-275
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• 2023

Echocardiography is a non-invasive method that is useful for diagnosing pulmonary arterial hypertension. It is known that echocardiography depends on the experience, education, and knowledge level of the cardiac sonographer. This study aimed to compare the agreement values between cardiac sonographer with different practical experiences in the diagnosis of pulmonary arterial hypertension using echocardiography. Three readers re-evaluated the echocardiography images of 148 patients who were diagnosed with pulmonary arterial hypertension at the S Medical Center from January 1, 2020, to December 31, 2020. The echocardiography values measured by each reader were compared and analyzed. The results of the analysis of discrete variables revealed that the agreement values of the cardiac sonographers showed excellent consistency for both reader 3 and the cardiologist group, indicating that more experience leads to better predictive accuracy for diagnosis of the condition. Furthermore, in terms of continuous variables, all the cardiac sonographer demonstrated good agreement in the measured values of the right atrium, which was easier to assess and clearer than the structurally complex measurements of the right ventricle. This study represents the first analysis in Korea of the agreement values measured by medical technologists who are cardiac sonographers.

• 건강소식
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• v.35 no.7
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• pp.16-17
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• 2011

검사 테이블로 바로 누워 해당 검사 부위에 투명한 젤을 바르고 그 위에 초음파 변환기를 대면 모니터에 실시간 이미지가 떠오르고 이를 관찰하면 된다. 짧게는 10분, 길게는 30분이면 충분하다. 이처럼 초음파검사는 간편할 뿐만 아니라, 별다른 고통 없이 여러 질병을 진단할 수 있다.

• Journal of the Korean Society of Radiology
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• v.15 no.4
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• pp.481-490
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• 2021

There is no qualification system for sonographers in Korea. But the MEDICAL SERVICE TECHNOLOGISTS, ETC. ACT stipulates that radiological technologists can handle ultrasound equipment. However, there is controversy about the scope of the work allowed for radiological technologists to perform ultrasound examinations. Accordingly, the authoritative interpretation of the Ministry of Health and Welfare of Korea, the adjudication of administrative judgment, and the judgment of the courts were analyzed. As a result, the authoritative interpretation expresses that when a radiological technologist performs an ultrasound examination, a diagnosis and specific guidance should be made in real time while the doctor simultaneously watches the radiological technologist's images. In the adjudication of administrative judgment, it was decided that the handling of ultrasound-related equipment was the work of the radiological technologist. The court ruled that it was illegal for a radiological technologist to make a medical judgment on ultrasound examination. In the United States, Canada, etc., the sonographer independently conducts ultrasound examination according to the doctor's prescription, prepares a summary of what they saw and this is passed on to the doctor. Therefore, in Korea, there is a need for institutional improvement so that radiological technologists can perform ultrasound examinations according to doctors' prescriptions without real-time guidance.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.6 no.2
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• pp.94-100
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• 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.

• Journal of the Korean Society for Nondestructive Testing
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• v.18 no.1
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• pp.42-45
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• 1998

원유 또는 가스 생산을 위해 해상에 설치되는 플랜트 해양설비는 크게 jacket과 module로 나눌 수 있다. Jacket은 module을 지지하기 위한 구조물로써 jacket 본체와 pile로 구성되어 있으며, 미국용접학회(AWS)의 규정에 의해 대부분의 맞대기 완전용접 이음부(full penetration butt welds)에 대해 100% 방사선투과검사를 실시하게 되어 있다. 그러나 지금까지 방사선투과검사를 실시해 온 경험으로 미루어 볼 때 방사성에 대한 안전성, 생산공정의 영향(검사지연) 등 방사선투과검사는 많은 문제점을 가지고 있었다. 이에 대한 문제점을 해소하고, 국내의 비파괴검사 기술 향상을 위해 자동 초음파탐상 system을 개발, 방사선투과검사를 자동 초음파탐상검사로 대체하여 적용한 사례를 간략하게 기술하였다. 또한, 적용 확대를 위해 개방중인 system을 소개하고 아울러 자동 초음파탐상기술에 대한 앞으로의 방향을 제시하였다.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.4 no.1
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• pp.42-49
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• 2011

Ultrasonography is a powerful and useful method for the examination of the various shoulder diseases. The use of high-resolution transducer and technical evolution allowed the improvement of the accuracy of detection of various shoulder pathology including the rotator cuff disease. However, its limitation is that there is marked disparity in the interpretation according to the operators' experience. This article describes the appropriate scan technique of ultrasonography around shoulder.

• Journal of the Korean Society for Nondestructive Testing
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• v.25 no.4
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• pp.287-293
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• 2005

Ultrasonic guided waves are gaining increasing attention for the inspection of platelike and rodlike structures. At the same time, inspection methods that do not require contact with the test piece are being developed for advanced applications. This paper capitalizes on recent advances in the areas of guided wave ultrasonics and noncontact ultrasonics to demonstrate a superior method for the nondestructive detection of defects thinning simulating hidden corrosion in thin aluminum plates. The proposed approach uses EMAT(electro-magnetic acoustic transducer) for the noncontact generation and detection of guided waves. Interesting features in the dispersive behavior of selected guided modes are used for the detection of plate thinning. It is shown that mode cutoff measurements provide a qualitative detection of defects thinning. Measurement of the mode group velocity can be also used to quantify depth thinning.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.7 no.2
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• pp.89-97
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• 2014

Purpose: To evaluate the ultrasonographic findings of the elbows on group screening of middle school baseball players. Materials and Methods: Ninety-three players (age: 12-15, mean 13.5 years) of four middle school baseball team were evaluated with bilateral elbow ultrasonographies in the field regardless of elbow pain. Medial and anterolateral ultrasound examination of the both elbow were performed in the field to detect any abnormalities including medial epicondylar separation or fragmentation and capitellar osteochondritis dissecans respectively. We analyzed the relationship among elbow pain, physical findings and sonographic abnormalities and the differences of sonographic abnormalities between pitchers and fielders. Results: Thirty-six of 93 (39%) players had sonographic abnormalities of elbow in dominant arm, 30 with medial epicondylar apophyseal separation or fragmentation, 2 with osteochondritis dissecans, 4 with both lesions. Twenty-nine of 37 (78%) players with elbow pain had sonographic abnormalities. On physical examination, players with medial epicondylar abnormalities had medial epicondylar tenderness (59%) and pain on valgus stress test (52%), and 5 of 6 (83%) players with osteochondritis dissecans showed flexion contracture more than $5^{\circ}$. The incidence of medial epicondylar abnormalities between pitchers and fielders was statistically not significant but osteochondritis dissecans was more prevalent in pitchers (p<0.05). Conclusion: Elbow sonography is a simple and useful screening tool in the field and also effective for early detection of medial epicondylar abnormalities or osteochondritis dissecans that could be the main causes of elbow pain in adolescent baseball players.