• Title/Summary/Keyword: ultrasonography

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Ultrasonography of benign vulvar lesions

  • Cheung, Vincent Y.T.
    • Ultrasonography
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    • v.37 no.4
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    • pp.355-360
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    • 2018
  • With the increasing applications of ultrasonography in the field of dermatology, this imaging modality can be extended to identify and characterize common vulvar lesions, with a particular focus on their location, size, vascularity, and content. This pictorial essay provides an introduction to vulvar ultrasonography, including technical considerations, ultrasonographic anatomy, and the ultrasonographic appearances of some vulvar conditions.

A Break-Even Analysis that Helps with Decision Making involving the Introduction of Ultrasonography (초음파기기 도입 시 의사결정 지원을 위한 손익 분석)

  • Yeo, Seong-Hee;Lee, Hae-Jong;Seo, Young-Joon;Kim, Young-Hoon
    • Korea Journal of Hospital Management
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    • v.14 no.3
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    • pp.23-48
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    • 2009
  • The purpose of this study was to provide criteria which help executives to make decisions through the analysis of profitability of ultrasonography conducted in each medical department. In order to achieve such purpose, the study conducted break-even analyses on three medical departments of a university hospital in which has used ultrasonography was largely conducted in diagnosing diseases and performing surgeries. The research was carried out from January to June 2008. The data necessary for calculating cost, were collected using by computerized data. The results of the study were summarized as follows. 1. The Cost structure of each medical department: The Cost of ultrasonography was divided into direct cost and indirect cost through the categorization by cost object. Labor cost accounted for the largest portion of the direct cost with 69.3% in the department of obstetrics and gynecology, 67.4% in the department of radiology and 58.2% in the cardiac ultrasonography center, which followed by the depreciation cost of ultrasonography equipment. The calculation of the average material cost of each ultrasonographic test by medical test found that the cardiac ultrasonography center took first place with 2,355 won, followed by the department of obstetrics and gynecology with 266 won and the department of radiology with 233 won. As for the power cost of ultrasonography equipment, the department of radiology took fist place with 442,000 won. The power cost, however, did not affect much the cost price, because it accounted for only a small portion of the cost. As for indirect cost, the cardiac ultrasonography center ranked first with 7,156,000 won. Building depreciation cost accounted for the largest portion of the indirect cost. 2. Break-even analysis: Under the supposition that cost price can be divided into fixed cost and variable cost, a break-even analysis was conducted using the cost price confirmed through the cost structure of each medical department. As for the average customary charge of ultrasonography test conducted in each medical department, the department of obstetrics and gynecology charged 24,627 won, the department of radiology 53,179 won and the cardiac ultrasonography center 65,174 won. According to these results, the charges of ultrasonography test imposed by the department of radiology and the cardiac ultrasonography center wre enough to surpass break-even levels, but the charge imposed by the department of obstetrics and gynecology was not enough to offset the cost price. In conclusion, labor cost accounted for the largest proportion of cost price of ultrasonography test conducted in diagnosing diseases and performing surgeries in medical departments, followed by the fixed cost of ultrasonographic equipment depreciation cost. In medical department where the current charge of ultrasonography test turned out not to offset cost price through the break-even analysis of ultrasonographic equipment, ways to reduce fixed cost which accounts for the largest proportion of the cost price should be sought. Even medical departments whose current charge of ultrasonography test is enough to surpass break-even level are required to work for efficient management and cost reduction to continuously generate profits.

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Evaluation of acromial spur using ultrasonography

  • Kim, Hyungsuk;Choi, Syungkyun;Park, Soo Bin;Song, Hyun Seok
    • Clinics in Shoulder and Elbow
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    • v.24 no.1
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    • pp.15-20
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    • 2021
  • Background: The presence of an acromial spur implies a rotator cuff disorder due to impingement between the acromial spur and the rotator cuff. The purpose of the study was to observe acromial spurs using ultrasonography and to compare measurements between plain radiographs and sonograms. Methods: We retrospectively enrolled 51 consecutive patients with acromial spurs, which were interpreted on preoperative plain radiographs (supraspinatus outlet view and 30° caudal tilt) and preoperative sonograms. The ultrasonography transducer was held vertically and continuously moved laterally, which corresponded to the long axis of the long head of the biceps. The distance from the most distal margin of the original acromion to the most projected point of the acromial spur was measured. Results: No significant difference was found between the plain radiograph and ultrasonography measurements (p=0.186). A moderate to strong correlation was detected between the ultrasonography and supraspinatus outlet-view measurements (r=0.776, p=0.000). Conclusions: Anteriorly projected acromial spurs were well-visualized by ultrasonography. No discrepancy in acromial spur length was detected between the use of plain radiography (supraspinatus outlet view and 30° caudal-tilt view) and ultrasonography. The correlation coefficients between the plain radiography and ultrasonography measurements exceeded 0.7.

Use of ultrasonography for improving reproductive efficiency in cows I. Accuracy of rectal palpation and ultrasonography for determining the presence of a functional corpus luteum in subestrous daitry cows (초음파 진단장치를 이용한 축우의 번식효율증진에 관한 연구 I. 무발정 젖소에서 기능성황체를 평가하기 위한 직장검사와 초음파검사의 진단정확성)

  • Son, Chang-ho;Kang, Byong-kyu;Choi, Han-sun;Kang, Hyun-gu;Oh, Ki-seok;Shin, Chang-rok
    • Korean Journal of Veterinary Research
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    • v.36 no.4
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    • pp.941-948
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    • 1996
  • The accuracy of rectal palpation and ultrasonography for predicting the presence of a functional corpus luteum in subestrous dairy cows was investigated, using the result of a radioimmunoassay for progesterone in plasma. Luteal status (high or low progesterone concentrations) was diagnosed in 820 cows, using rectal palpation and B-mode transrectal ultrasonography, and the results of rectal palpation and ultrasonography were compared in $2{\times}2$ contingency table with plasma progesterone concentrations. A $2{\times}2$ contingency table analysis allowed the calculation of sensitivity, specificity and predictive values for rectal palpation and ultrasonography. The sensitivity, specificity, predictive value of a positive test and predictive value of a negative test were 81.9%, 67.5%, 79.0% and 71.4% for rectal palpation, and 96.3%, 88.8%, 94.5% and 92.4% for ultrasonography, respectively. The percentages of observed agreement and expected agreement between rectal palpation and ultrasonography were 71.8% and 57.1%, respectively. An evaluation of agreement between rectal palpation and ultrasonography, the value of Kappa was 0.34. It was concluded that a ultrasonography was more sensitive and specific than rectal palpation in predicting the presence of a functional corpus luteum. Therefore, ultrasonographic examination is a reliable method for assessing the functional status of ovarian structures in subestrous dairy cows.

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Using Ultrasonography in Korean Medicine to Observe Organs and Diseases, and Evidence of its Use (한의학에서 초음파 진단기기를 활용한 장부 및 질병 관찰과 그 활용 근거)

  • Baik, Tai-Hyeun
    • The Journal of Korean Medicine
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    • v.35 no.3
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    • pp.70-92
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    • 2014
  • Objectives: Due to advance of science and IT technology, high tech imaging equipment like ultrasonography, CT, MRI and PET scan is constantly being developed and progressed; use of these techniques is needed for Korean medicine. Methods: Historical study was undertaken on the evidence of using ultrasonography. Normal organs and various sorts of diseases were also observed by ultrasonography. Results: Korean medicine judges disease of internal organs and condition of health by symptoms of functional disease and organic disease based on anatomical theory. Ultrasonography based on anatomical theory is non-invasive and free from radiation exposure and can be performed directly from clinical practice in real-time. Ultrasonography can be a big help for securing the stability of the internal organs in inserting needles in the thorax and abdomen as well as diagnosing functional and organic diseases based on anatomical theory. Conclusion: We look forward to a great development of scientification and objectification of Korean medicine by using and researching imaging equipment based on anatomical theory as well as ultrasonography.

Diagnosis of Mares Associated with Infertility by Ultrasonography (말에서 초음파 영상을 이용한 번식장애마 진단)

  • 김용준;서세현;유일정;김명철;최종복;길명순
    • Journal of Veterinary Clinics
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    • v.15 no.2
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    • pp.358-363
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    • 1998
  • These studies were performed to investigate what genital diseases could be diagnosed by ultrasonography in the mares associated with infertility. Of 159 thoroughbred breeders(4 to 18 years old), 31 mares which had been considered as the mares with reproductive disorders were examined by ultrasonography during the breeding season. 1. Hematoma in ovarian disordersl endometritis and pyometra in uterine disorders could be diagnosed by ultrasonography. 2.The rate of infertility was 19.5% out of 159 breeders and the rate of uterine disordres was 71.0% among the whole reproductive disorders. 3.Of 31 mares considered as the mares with infertilityi 26 mares were diagnosed by ultrasonography denoting 83.9% of diagnosis rate. 4.The highest average age of mares among the mares with reproductive disorders was 11.7 years in the mares with uterine disorders. The average age of the mares diagnosed as concepted was 7.5 years, which was much lower than that of the mares with reproductive disorders.5.Crushing one of twin vesicles was confirmed by ultrasonography. In conclusions ultrasonography was feasible for diagnosis of the mares with reproductive problems.

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Value of Ultrasound Elastography in Assessment of Enlarged Cervical Lymph Nodes

  • Teng, Deng-Ke;Wang, Hui;Lin, Yuan-Qiang;Sui, Guo-Qing;Guo, Feng;Sun, Li-Na
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.5
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    • pp.2081-2085
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    • 2012
  • Background: To investigate the value of ultrasound elastography (UE) in the differentiation between benign and malignant enlarged cervical lymph nodes (LNs). Methods: B-mode ultrasound, power Doppler imaging and UE were examined to determine LN characteristics. Two kinds of methods, 4 scores of elastographic classification and a strain ratio (SR) were used to evaluate the ultrasound elastograms. Results: The cutoff point of SR had high utility in differential diagnosis of benign and malignant of cervical lymph nodes, with good sensitivity, specificity and accuracy. Conclusion: UE is an important aid in differential diagnosis of benign and malignant cervical LNs.

Practical Approach of Laryngeal Ultrasonography (후두초음파의 임상적 활용)

  • Cho, Woojin
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.29 no.1
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    • pp.19-23
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    • 2018
  • Ultrasonography has increasingly moved from being a modality confined to the radiology department to an active diagnostic and therapeutic aid available to the head and neck at the point of patient care. However, the application of ultrasonography to the laryngeal disorder is very rare due to progressive age-related ossification of laryngeal cartilage and the presence of air in the lumen, which contribute to difficult conditions for transmission of the ultrasonic waves. The observation about the movements of larynx or surrounding structures is important to understand the physiology of phonation or swallowing and to diagnose the disease. Ultrasonography is a noninvasive and safe imaging technique that can be used to investigate the anatomic structures of the head and neck. Recently, the development of high-frequency ultrasonography makes it possible to apply the ultrasound in the evaluation of larynx.

Ultrasonography of acute flank pain: a focus on renal stones and acute pyelonephritis

  • Sim, Ki Choon
    • Ultrasonography
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    • v.37 no.4
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    • pp.345-354
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    • 2018
  • Ultrasonography is a useful tool for the differential diagnosis of acute flank pain. Renal stones appear as a focal area of echogenicity with acoustic shadowing on ultrasonography. In acute pyelonephritis (APN), the kidneys may be enlarged and have a hypoechoic parenchyma with loss of the normal corticomedullary junction. However, clinical and laboratory correlations are essential for the diagnosis of renal stones and APN through imaging studies. This review describes the typical ultrasonography features of renal stones and APN. Moreover, in daily practice, cross-sectional imaging is essential and widely used to confirm renal stones and APN and to differentiate them from other diseases causing flank pain. Other diseases causing acute flank pain are also described in this review.