• Journal of Animal Science and Technology
• /
• v.45 no.2
• /
• pp.335-342
• /
• 2003

This study was conducted to predict the carcass yield traits using ultrasound before slaughter and to enhance the prediction accuracy of carcass yield grade by applying various strategies. For this experiment, five hundred seventy three Hanwoo steers of 24 months of age were used. Difference between ultrasound result and carcass measure of BFT and LMA was 0.6$\pm$1.65mm and 0.7$\pm$5.56cm2, respectively. Correlation coefficient between ultrasound result and carcass measure of BFT and LMA was 0.86 and 0.82, respectively (p<0.001). Results for improving predictions of yield grade by four methods-the Korean yield grade index equation, fat depth alone, regression and decision tree methods were 80.3%, 81.3%, 80.1% and 81.8%, respectively. We conclude that the decision tree method can easily predict yield grade and is also useful for increasing prediction accuracy rate.

• Clinical and Experimental Pediatrics
• /
• v.50 no.1
• /
• pp.47-51
• /
• 2007

Purpose : The early diagnosis of Kawasaki disease (KD) is difficult sometimes, especially in atypical or incomplete cases presenting 4 or less principal clinical features without coronary arterial lesions (coronary arterial ectasia or aneurysm). The authors investigated the incidence of echocardiographic abnormalities in patients with KD to discover whether abnormal echocardiographic findings might be helpful in the early diagnosis of KD. Methods : Echocardiography was done in the acute stage of 103 patients with KD (Kawasaki group) and 40 patients with other acute febrile illnesses (control group). Abnormal echocardiographic findings were classified into 4 categories and defined as follows; 1) significant pericardial effusion, 2) significant valvular dysfunctions, 3) left ventricular systolic dysfunction, 4) coronary arterial ectasia or aneurysm. Results : In the Kawasaki group, significant pericardial effusion was present in 24 patients (23.3 percent), significant valvular dysfunctions in 30 patients (29.1 percent), left ventricular systolic dysfunction in 10 patients (9.7 percent), and coronary arterial lesions in 27 patients (26.2 percent). In the control group, significant pericardial effusion was present in only one patient (2.5 percent). The number of patients with any one of echocardiographic abnormalities was 57 (55.3 percent) in Kawasaki group and one (2.5 percent) in control group. The sensitivity of echocardiography in the diagnosis of KD was 55.3 percent, the specificity 97.5 percent, the positive predictive value 98.3 percent, and the negative predictive value 45.9 percent. Conclusion : If abnormal echocardiographic findings, even if other than coronary arterial lesions, are confirmed in patients in whom KD is suspected, it seems desirable to inifiate specific treatment for KD.

• Journal of the Korea Computer Industry Society
• /
• v.7 no.5
• /
• pp.583-590
• /
• 2006

BT technology, medical treatment engineering technology is offering important role and grow by creative technology. Specially, bone fracture treatment can achieve very important role in research of bone, physiology and dynamics of bone is very useful patient's diagnostic and treatment in presence at a sickbed. <중략>Furthermore embedded base of in administration aspect as well as if supersonic waves curer is treatment innocuously and without invasion very efficient tell. If apply supersonic waves in bone fracture treatment, can reduce curer about 40%. Operation frequency through bone fracture treatment supersonic waves curer of embedded base designs and manufactured 1m Hz, 1.2mHz, 1.3mHz, 1.4mHz, supersonic waves origination that have 1.5mHz's tranducer, and embodied protocol in PDA base in this research, and did so that is interfaced to general PC. If is using but supplement research water that see clinically by diagnosis in city, is seen to become convenient medical treatment assistance mounting to bone fracture patient's treatment and courtesy call. Specially, tried to approach basic form after modeling processing if may be applied variously to physiotherapy, orthopaedics patient who gouge late, and study standardization special quality little more.

• Journal of the Korea Convergence Society
• /
• v.6 no.6
• /
• pp.195-200
• /
• 2015

This study conducted a comprehensive health examination center in healthy adult subjects 47 people in the 30-55 age carotid ultrasound and a blood test and measurement physique is located in Gyeonggi Province in 2014, was analyzed in the same group between gender and age of the person hip circumference was higher than the 40s and 50s(p<0.05). Carotid ultrasound results showed differences in the 30s and 50s (p<0.05). CIMT and BMI, in CIMT showed a positive correlation with hip circumference (p<0.05). In addition, blood pressure and systolic blood pressure in the CIMT showed a positive correlation (p<0.05). In conclusion, in this study, we demonstrated a correlation between metabolic syndrome risk factor in carotid IMT, and continue to research needed for the diagnosis of diseases of the metabolic syndrome factor fusion research is utilizing ultrasound for a more qualitative disease diagnosis.

• The Journal of Korean Orthopaedic Ultrasound Society
• /
• v.3 no.1
• /
• pp.8-14
• /
• 2010

Purpose: We wished to evaluate the clinical usefulness of ultrasound, when loose body is palpated and is shown radiographically in knee. Material and Methods: Twenty-five knees of twenty-two patients with loose body in knee radiographically from March, 2007 to July, 2009 were involved in this study, there were 8 males and 14 females, there were 11 right knees, 8 left knees and 3 both knees, the average age was 56.3 years (range, 32~76 years). The location of loose bodies were 13 cases at suprapatella pouch, 1 case at infrapatella anterior compartment and 11 cases at posterior compartment. In loose bodies of suprapatella pouch, we examined the mobility of loose bodies longitudinally with ultrasound placed at superior patella pole while flexing and extending the knee. In loose bodies of infrapatella anterior and posterior compartment, we examined the mobility of loose bodies longitudinally and transversely with ultrasound while flexing and extending the knee. Results: All cases of suprapatella pouch and infrapatella anterior compartment were diagnosed to movable loose bodies and were removed surgically, all cases of posterior compartment were diagnosed to immovable loose bodies and were not removed. Conclusion: When we determined the surgical removal according to mobility of loose body in knee, ultrasound may be helpful clinically.

• Clinical and Experimental Pediatrics
• /
• v.45 no.10
• /
• pp.1213-1218
• /
• 2002

Purpose : Hydronephrosis constitutes a great portion of fetal anomalies screened by prenatal sonogram. The present authors made an attempt to access its natural courses through follow up neonatal hydronephrosis diagnosed by prenatal sonogram. Methods : The study was composed of 23 neonates(36 renal units) who were diagnosed with hydronephrosis through prenatal sonogram screening and confirmed 3-7 days after birth with sonographic evaluation at Kyung Hee University Hospital. The neonates were closely monitored for 12-24 months with renal sonogram, diuretic renogram, intravenous pyelography(IVP) and voiding cystoureterography(VCUG). Results : The underlying diseases were composed of 16 cases(44%) of functional abnormalities, 14 cases(39%) of ureteropelvic junction(UPJ) obstruction, three cases(8%) of vesicoureteral reflux (VUR) and on case each of multicystic dysplastic kidney, UPJ obstruction with ureteral stenosis and ureterovesical junction(UVJ) obstruction with VUR. The degree of hydronephrosis was divided into three classes according to its severity. In 30 renal units with UPJ obstruction and functional abnormalities, 26(87%) showed mild hydronephrosis, while four(13%) were moderate. During the follow up period, six cases(20%) showed natural resolution of hydronephrosis, 15 cases(50%) showed improvement while two cases(7%) were aggravated with improvement only after surgery of the underlying disease. The cases which showed natural resolution were all mild hydronephrosis at diagnosis and the cases which underwent surgery due to continuous aggravation were mild one case and moderate one case. Conclusion : Those with cases of mild hydronephrosis show rapid natural improvement. On the other hand, in some cases, follow up monitoring reveal aggravation of the situation, emphasizing the necessity for thorough follow up for a long period of time.

• Korean Journal of Veterinary Research
• /
• v.35 no.4
• /
• pp.833-841
• /
• 1995

Ultrasonography was used to measure the corpus luteum area for determining the relationships between corpus luteum size and milk progesterone concentration during the estrous cycle in 16 dairy cows. Cows were classified retrospectively into cows that had corpus luteum with(n=P) and without(n=7) cavity. Ultrasound examination and collection of milk samples for progesterone assay were performed with 2 day intervals from Days 0 to 12, and then daily from Day 14 to the day of the next ovulation. The means for corpus luteum area and for milk progesterone concentration during the estrous cycle were not significantly different between cows that had corpus luteum with and without cavity. The correlation coefficients between corpus luteum area and milk progesterone concentration during luteal development (Days 2 to 8) were 0.71(p<0.0001) and 0.74(p<0.0001) for corpus luteum with and without cavity, respectively, during luteal regression(Days -6 to 0 relative to the next ovulation) 0.73(p<0.0001) and 0.76(p<0.0001), respectively. The correlation coefficients combined fur both stages of estrous cycle and both luteal statuses were 0.70(p<0.0001). These results indicate that corpus luteum area is significantly correlated to milk progesterone concentration, and ultrasonographic assessment of the corpus luteum is a reliable method fur estimating peripheral progesterone concentrations during the estrous cycle in cows.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.17 no.4
• /
• pp.50-56
• /
• 2003

It is well known that a partial-discharge(PD) in insulation oil is the source of various physical and chemical phenomena, such as heat, light, gas, chemical transformation, electric current, electromagnetic radiation and ultrasonics. The PD can be detected by measuring one of these changes. Although some techniques are employed in this purpose, several obstacles interfere with an on-line measurement. Ultrasonic-wave detection is a useful method for the diagnosis of the transformer-insulation condition. Conventionally, ulyrasonic waves are detected by Piezo-electric transducer, but we use optical method that has many advantages. In this paper, we constructed a Mach-Zehnder interferometer with optical fiber and investigated the principle of operation. Test arrangement is based on the needle-plane electrode system in oil and applied AC high voltage. Ultrasonic waves were detected and analyzed with wavelet transform.

• Journal of the Korean Society of Radiology
• /
• v.82 no.1
• /
• pp.182-193
• /
• 2021

Purpose To identify the features that can be used for differentiating appendicitis from non-appendicitis in pediatric patients with equivocal ultrasound (US) results. Materials and Methods A total of 53 pediatric patients (≤ 18 years old) with equivocal results on US examination for suspected appendicitis between November 2012 and October 2017 were included. US evaluation was conducted based on information retrieved from a predefined structured report form. Then, the likelihood of appendicitis was prospectively classified into five categories. The equivocal results were considered as grade 3 (indeterminate) and grade 4 (probably appendicitis). Results Of the 53 patients, 25 (47.2%) and 28 (52.8%) were classified into grade 3 and 4 groups, respectively. Among the individual US findings, increased vascularity of the appendiceal wall and peri-appendiceal fat infiltration were independent findings associated with the diagnosis of appendicitis (p = 0.005, p = 0.045, respectively) in the multivariate logistic regression analysis and showed the highest diagnostic accuracy (69.8% and 62.3%, respectively). Conclusion Increased vascularity within the appendiceal wall and peri-appendiceal fat infiltration were significant predictors of appendicitis in patients with equivocal US findings.

• Clinical and Experimental Pediatrics
• /
• v.49 no.7
• /
• pp.732-736
• /
• 2006

Purpose : Numerous methods exist for diagnosing nonpalpable testis in treatment of cryptochidism. However, there is no clinically established data for the rational diagnostic tool of nonpalpable testis in terms of expenses. We tried to establish a current conventional diagnostic course of nonpalpable testis. We then evaluated the efficacy of ultrasonography, physical examination under general anesthesia and laparoscopy for diagnosing nonpalpable testis. Methods : Between March 2000 and February 2005, 103 boys(129 testes) with undescended testes were treated in our department. There were 31 testes(24.0%) that were not palpable at physical examination. These patients were evaluated with ultrasonography and repeated physical examination under general anesthesia. In the cases where testes could not be detected with ultrasonography and physical examination under general anesthesia, laparoscopy was performed to diagnose nonpalpable testis. Results : In 31 cases of nonpalpable testis, 13 testes were detected with ultrasonography and 15 testes became palpable with physical examination under general anesthesia. All of the remaining 16 nonpalpable testes were confirmed with laparoscopy. Conclusion : Physical examination under general anesthesia was superior to ultrasonography in making a diagnosis of nonpalpable testis. Ultrasonography and physical examination under general anesthesia could reduce the incidence of diagnostic laparoscopy. Therefore, it is recommended that ultrasonography, physical examination under general anesthesia and laparoscopy must be performed conventionally in order to diagnose nonpalpable testis.