• Title/Summary/Keyword: Ultrasound Scan

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A Study on Microbial Contamination and Disinfection of Ultrasonic Probe in Metropolitan Area (수도권 지역의 초음파 프로브의 미생물 오염도와 소독에 관한 연구)

  • Lee, Hyun Kyung;Kim, Sam Soo;Heo, Yeong Cheol;Han, Dong Kyoon
    • Journal of radiological science and technology
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    • v.41 no.5
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    • pp.427-435
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    • 2018
  • There was a shortage of research reports on sterilization criterion and contamination of ultrasonic probes. Therefore, in this study, we were going to provide a basic study to measure the level of microbial contamination in ultrasonic probes and to investigate the radiographer's awareness of infection. After the scan, samples were collected from the rubber part of the probe by opening a sterile swab (Transport Medium AM608-1S) for medical bacteria collection with the remaining gel removed with a paper towel. Also, the collected samples of bacteria were grown for seven days and then the laboratory was analyzed. Among the total 29 types of microorganisms, Micrococcus luteus 21(26%), Moraxella species 16(20%), Coagulase negative staphylococcus 8(10%), Bacillus species 5(7%), Bicillus circulans 3(5%), Acinetobacter lwoffii 2(2%), and 1 other Candida parapsilosis (1%) a number of bacteria and fungus, was detected. In a disinfectant experiment using LuciPac Pen on the Lumitester PD-30s, we cultured the rubber part of the probe two to three times to measure the bacteria. Bacteria decreased to 97% with Aquanax (alkaline reduced water 100%), 99% with Klarion wash (0.01% sodium hydroxide), 94% with Klarion disinfection (0.01% nitrous acid water), Sterilization was best with Klarion wash (0.01% sodium hydroxide). Therefore, guidelines for cleaning and disinfection of ultrasonic probes was required, and further development of probe-only disinfectants is required.

Use of an Ultrasonic Osteotome for Direct Removal of Beak-Type Ossification of Posterior Longitudinal Ligament in the Thoracic Spine

  • Kim, Chi Heon;Renaldo, Nicholas;Chung, Chun Kee;Lee, Heui Seung
    • Journal of Korean Neurosurgical Society
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    • v.58 no.6
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    • pp.571-577
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    • 2015
  • Direct removal of beak-type ossification of posterior longitudinal ligament at thoracic spine (T-OPLL) is a challenging surgical technique due to the potential risk of neural injury. Slipping off the cutting surface of a high-speed drill may result in entrapment in neural structures, leading to serious complications. Removal of T-OPLL with an ultrasonic osteotome, utilizing back and forth micro-motion of a blade rather than rotatory-motion of drill, may reduce such complications. We have applied the ultrasonic osteotome for posterior circumferential decompression of T-OPLL for three consecutive patients with beak-type OPLL and have described the surgical techniques and patient outcomes. The preoperative chief complaint was gait disturbance in all patients. Japanese orthopedic association scores (JOA) was used for functional assessment. Scores measured 2/11, 5/11, 2/11, and 4/11 for each patient. The ventral T-OPLL mass was exposed after posterior midline approach, laminotomy and transeversectomy. The T-OPLL mass was directly removed with an ultrasonic osteotome and instrumented segmental fixation was performed. The surgeries were uneventful. Detailed surgical techniques were presented. Gait disturbance was improved in all patients. Dural tear occurred in one patient without squeal. Postoperative JOA was 6/11, 10/11, 8/11, and 8/11 (recovery rate; 44%, 83%, 67%, and 43%) respectively at 18, 18, 10, and 1 months postoperative. T-OPLL was completely removed in all patients as confirmed with computed tomography scan. We hope that surgical difficulties in direct removal of T-OPLL might be reduced by utilizing ultrasonic osteotome.

A study of the high resolution Ultrasound Diagnostic system for Dermatology (피부학(Dermatology)을 위한 고해상도 초음파 진단 장치에 관한 연구)

  • Lew, Jeom-Soo;Lim, Chun-Sung;Kim, Young-Kil
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.35S no.6
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    • pp.66-71
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    • 1998
  • High spatial resolution ultrasonic imaging is necessary in several fields of investigation, in order to permit greater precision of clinical diagnosis in the dermatology, ophthalmology etc. We present a B-mode scan system using sector scanning probe of 20MHz center frequency. This developed system allow the high resolution image of 250${\mu}m$ in lateral and 80${\mu}m$ in axial, which of display the size of a $5mm {\times} 5mm$ image with 20 frames/sec. We have shown the images of various structural elements of the human skin and of the nail. We have compared the skin images obtained for each of the different age and we have shown in a general with the age, the atrophy of the skin thickness and the appearance of the abnormal hypoechogene band under epidermis (named SENEB : Sub Epidermal Non Echogene Band).

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Warthin's Tumor of the Parotid Gland (이하선의 Warthin씨 종양)

  • Lee Kang-Young;Chung Woong-Youn;Park Cheong-Soo
    • Korean Journal of Head & Neck Oncology
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    • v.12 no.2
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    • pp.177-180
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    • 1996
  • Warthin's tumor is a benign and slow growing tumor found exclusively in the parotid gland or the periparotid lymph nodes. It mostly affects males between the age of forty to seventy years and is closely related with smoking history. Between January 1981 and June 1996, 42 patients underwent surgical excision of Warthin's tumor of the parotid gland; which made up 10.6% of all parotid gland surgeries(398 cases) during the same period. Their ages ranged from 36 to 75 years with a mean age of 56 years. There were 33 male and 9 female patients with a 4.3 : 1 male to female ratio. The majority of the tumors were situated in the parotid tail whereas one was in the deep lobe. Bilateral simultaneous involvements of the parotid gland were found in 4 patients(9.5%) ; therefore total of 46 parotid glands were involved. Four(8.7%) of the 46 parotid glands had multifocal tumors ranginging from two to three lumps. Tumor sizes varied from 1.5 to 6.0cm with mean diameter of 3.lcm. Of the 42 patients, 26(61.9%) were diagnosed preoperatively or peroperatively by means of CT scans, ultrasound, 99m-Tc. scan, fine needle aspiration cytology or intraoperative frozen section biopsy. Of the 46 tumors, 30 underwent a superficial(n=29) or total(n=1) parotidectomy and for 16 cases with tumors suspected preoperatively or peroperatively of being single Warthin's tumor, only enucleation was performed. No cases of recurrence were identified during the follow up period regardless of type of operation performed, however the postoperative complication rate was much higher in the parotidectomy group(33.3%) than in the enucleation only group(12.5%). We feel that an enucleation procedure may be appropriate for the patients with single Warthin's tumor.

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Evaluation of Internal Defect of Composite Laminates Using A Novel Hybrid Laser Generation/Air-Coupled Detection Ultrasonic System (레이저 발생 초음파와 공기 정합 수신 탐촉자를 이용한 복합재료 적층판의 내부 박리 결함 평가)

  • Lee, Joon-Hyun;Lee, Seung-Joon;Byun, Joon-Hyung
    • Journal of the Korean Society for Nondestructive Testing
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    • v.28 no.1
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    • pp.46-53
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    • 2008
  • Ultrasonic C-scan technique is one of very popular techniques being used for detection of flaws in polymer matrix composite(PMC). However, the application of this technique is very limited for evaluation of defects in PMC fabricated by the automated fiber placement process. The purpose of this study is to develop a novel ultrasonic hybrid system based on nondestructive and non-contact ultrasonic techniques for evaluation of delamination in carbon/epoxy and carbon/PPS composite laminates. It was shown that the newly developed ultrasonic hybrid system based on dual air-coupled pitch-catch technique with ultrasonic scattering reflection concept could provide excellent image with higher resolution of delamination in PMC compared with the conventional pitch-catch method. It is expected that this ultrasonic hybrid technique can be applied for on-line inspection of flaws in PMC during the fabrication process.

Smart Glasses Cannula Guide System Development for Interventional Cardiology Procedures (중재적 심장 질환 시술을 위한 스마트 글래스 삽입관 가이드 시스템 개발)

  • Jang, Ik Gyu;Heo, Yeong Jun;Jeon, Geum Sang;Choi, Jaesoon
    • Journal of Biomedical Engineering Research
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    • v.41 no.5
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    • pp.173-178
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    • 2020
  • Remote control intervention surgery robotic system improves treatment effect on cardiovascular patients and reduces X-ray exposure. However, at the time of the first procedure, CT (computerized tomography) and other ultrasound diagnostic equipment should be used because the operator must insert the cannula directly into the patient's leg. Improvements to this have been un-met-needs of hospitals. In this paper, we developed a system that can insert the cannula intuitively and quickly by displaying blood vessels at a glance through the system using smart wearable glasses. The core development method is as follows. In order to project augmented reality onto the surgical image, CT scan angiography image is extracted and processed. In the process, three CT-Markers are used to create a coordinate system of blood vessel images. Additionally, a reference marker is photographed on a single camera to obtain a camera coordinate system. Since the CT marker and the reference marker are in the same position, 3D registration is performed. In the text, a detailed explanation will be given.

A Study on the Relationship Between State Anxiety and Maternal Fetal Attachment of Unmarried Mothers in a Welfare Center (보호시설 미혼모의 태아애착행위와 상태불안에 관한 연구)

  • Hwang, Ran-Hee
    • Women's Health Nursing
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    • v.11 no.3
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    • pp.218-224
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    • 2005
  • Purpose: The Purpose of this study was to investigate the relationship between state anxiety and maternal fetal attachment of unmarried mothers in a welfare center. Methods: The subjects were 25 unmarried mothers in a welfare center. The data was collected through personal interviews using a questionnaire. The instruments used for this study were the modified Spielberger's state anxiety inventory and Cranley's Maternal-Fetal Attachment Scale. Data was analyzed descriptive statistics, mean, standard deviation, t-test and the pearson correlation coefficient with the SPSS computer program. Results: The age of the subjects ranged from 15 to 25, and their average age was 20.0. The mean score of state anxiety was 58.2. There was significant difference in the degree of maternal state anxiety between the group whose pregnancy was known by their family and the group whose pregnancy was hidden. The group whose pregnancy was known showed a low state anxiety score. There was a significant difference in the degree of maternal state anxiety by the gestational period. The group who were in the second and third gestational trimester showed lower state anxiety score than in the first trimester. The mean score of maternal-fetal attachment(MFA) was 64.9. There were significant differences in the degree of maternal fetal attachment, by an ultrasound scan experience. The most frequently practiced attachment item was "I think the fetus is able to feel(mean 3.8)". Unmarried mothers degree of state anxiety showed a negative correlation with the degree of maternal fetal attachment(r=-.25), but there was no significant difference between the two variables. Conclusions: The unmarried mothers made an effort in striving to reduce their high state anxiety and to enhance maternal fetal attachment. They also realize how to take care of their state anxiety.

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The Analysis of Satisfaction with Clinical Training and the Related Factors in the Korean Medicine Obstetrics and Gynecology (한방부인과학에서 임상실습교육의 만족도와 관련요인 분석)

  • Yang, Seung-Jeong;Park, Kyung-Mi;Cho, Seong-Hee
    • The Journal of Korean Obstetrics and Gynecology
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    • v.33 no.1
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    • pp.116-127
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    • 2020
  • Objectives: The purpose of this study is to analyze csatisfaction with clinica1 training in the department of Korean Medicine Obstetrics and Gynecology and the related factors. Methods: All the students on the graduating class of school of Korean Medicine, Dong-Shin University must be trained for 1 year in the department of Korean Medicine Obstetrics and Gynecology according to clinical training guideline including Objective Structured Clinical Examination (OSCE). After completing clinical training, we distributed questionaries to them about a reflex of the object of study, usefulness, difficulty, satisfaction and preference. And then, we analyzed the related factors including descriptive statistics, frequency analysis and correlation analysis by SPSS 12.0. Results: In general, a reflex of the aim of study (7.31±1.59), satisfaction with contents (7.44±1.58), and difficulty (6.13±1.34) were evaluated restectively. There is no statistically significant difference with sex. There is a statistically significant positive correlation between a reflex of the aim of study and satisfaction with contents. The primary preferences of clinical practice were Clinic Training, Ward Training, PBL (Problem Based Learning), OSCE. In OSCE, a reflex of the aim of study (7.04±1.83) and usefulness (7.02±1.97) were highly evaluated. There is no statistically significant difference with sex. The primary preferences for clinical OSCE practice were breast examination, genital examination, ultrasound scan, and pap smear. Facilities and equipment (6.84±2.01), contents of clinical training (7.29±1.83), the handout (7.20±1.98) and time scheduling (7.29±1.90) were evaluated respectively in general composition of clinical training. Conclusions: Clinical training program in the department of Korean Medicine Obstetrics and Gynecology can be highly estimated from the viewpoint of satisfaction with clinical training and the related factors.

A Case Report on Treatment of Unilateral Testicular Pain with Korean Medicine for a Patient with Recurrent Varicocele (우측 고환 통증을 호소하는 정계정맥류 치험 1례)

  • Jeong, Su-min;Lee, Min-seong;Oh, Seung-hyun;Lee, Han-yong;Leem, Hyung-geun;Ahn, Young-min;Ahn, Se-young;Lee, Byeong-chul
    • The Journal of Internal Korean Medicine
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    • v.42 no.5
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    • pp.916-922
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    • 2021
  • Objectives: This study aimed to determine whether Korean medicine could improve unilateral testicular pain caused by recurrent varicocele without unfavorable side effects. Methods: A 46-year-old man diagnosed with varicocele, identified with a scrotal ultrasound scan, had right-side testicular pain. We administered Banchong-san and Eunhoebanchong-san to observe changes in the degree of pain. Results: After one month of taking Banchong-san and Eunhoebanchong-san, testicular pain improved. Conclusion: This study suggests that Korean medicine might be effective for managing testicular pain caused by varicocele.

Review Study on the Measurement Tools of Scoliosis: Mainly on Non-radiological Methods (척추측만증 평가 척도에 관한 문헌 고찰: 비방사선 방법을 중심으로)

  • Kim, Dong-Joo;Choi, Seong-Kyeong;Jo, Hyo-Rim;Ha, Yu-bin;Choi, Sung-Hwan;Park, Seo-Hyun;Lee, Seung Deok;Keum, Dong-Ho;Sung, Won-Suk;Kim, Eun-Jung
    • The Journal of Korean Medicine
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    • v.42 no.1
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    • pp.75-98
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    • 2021
  • Objectives: The purpose of this study is to investigate the characteristics, validity, and reliability of non-radiological assessment tools of scoliosis that have been studied so far. Methods: Electronic databases including Pubmed, Cochrane Library, CNKI, Science On, RISS, OASIS were searched by keywords including 'scoliosis assessment', 'scoliosis screening', 'physical examination', 'functional measurement', 'photography', and 'smartphone'. Results: 32 articles using radiation-free assessments were identified from 1,011 records. The mostly used non-radiological methods were Surface topography, Scoliometer, Ultrasound, Digital Infrared Thermal Imaging, and Photography. The other methods were Gait analysis, 3D depth sensor imaging, and Low intensity electromagnetic scan. Conclusions: It was found that non-radiological assessment tools might reduce the number of radiographs taken in scoliosis patients. To increase the reliability and validity, further research on the measurement tools of scoliosis will be needed.