• 대한방사선기술학회지:방사선기술과학
• /
• 제34권4호
• /
• pp.287-296
• /
• 2011

급변하는 의료환경에 적응할 수 있는 현장실무형 인재양성을 위해 방사선(학)과 학생들을 대상으로 임상 실습교육의 만족도를 조사하였다. 조사 대상자는 학제에 따라 3년제와 4년제 학생 302명을 대상으로 설문을 실시하였다. 수집된 자료는 SPSS/PC+ Win 13 버전을 사용하여 분석하였다. 첫째, 일반적 특성 분포와 임상 실습 특성은 빈도분석, 둘째, 변인에 따른 임상실습 만족도 차이는 일원분산분석, 셋째, 변인 간 관계는 단순 적률상관관계로 분석하였다. 임상실습교육과 관련하여 실습과목의 도움, 지도자의 전문성, 실습내용, 실습환경, 실습시간, 실습 후 평가, 그리고 실습 전반에 대한 만족도 분석 결과, 실습 전반에 대한 만족도가 가장 높았고, 임상실습 내용, 시간 순이었다. 그리고 임상실습교육 만족도 관련 요인들은 높은 상관관계를 지니는 것으로 분석되었다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제33권5호
• /
• pp.494-498
• /
• 2007

Purpose: This study was done to know the usefulness of fractal analysis when evaluating the radiologic changes after decompression on jaw bone cystic lesions using fractal analysis. Materials and methods: 30cases of cystic lesions were followed up after decompression. Panoramic image was used to observe radiologic changes around the cystic lesion. The part of the panoramic image which showed radiologic change was defined as region of interest(ROI); The fractal dimension of the ROI was calculated using box-counting method. Results: Using sign-rank test, there was a statistically significant difference in fractal dimensions after decompression therapy(P<0.0001). The fractal dimensions statistically increased after decompression(the median of D:0.12). Conclusions: The ROI after decompression showed higher fractal dimensions which offer the objective proof of the bone healing around cystic lesions after decompression treatment.

• 대한방사선기술학회지:방사선기술과학
• /
• 제45권3호
• /
• pp.213-223
• /
• 2022

Although the number of computed tomography(CT) is increasing every year, it is insufficient to establish appropriate workload calculation standards of radiologic technologist to provide optimal medical services to patients, such as patient safety management and infection management. The purpose of this study is to present guidelines for calculating the appropriate workload of radiologic technologist by analyzing the work flow of CT procedures and the time required for CT examination in major hospitals. As for the study subjects and methods, the appropriate process for each step of CT examination was investigated to systematically present the process and time required for the actual examination, and the CT procedure time of 104,105 adult patients and 465 pediatric patients under the age of 6 were analyzed. For the time required, data according to the use of contrast medium, procedure type, and adult/child were collected and compared. The test time of CT examination using contrast medium took about 13 minutes when one radiologic technologist worked and about 9 minutes when two radiologic technologists worked. The time required for the procedures were statistically significant depending on the presence or absence of contrast medium, multi-phase procedure, and patient age (considering pediatric patients). As a result, in order to thoroughly perform patient safety and infection management, the appropriate workload increased by about 40% when there were two radiologic technologists. The limit workload was an average of 32 people per day with one radiologic technologist per 15 minutes, and 48 people per day with two radiologic technologist per 10 minutes. This is a marginal workload, and in the case of procedures that require more time to acquire radiographic images, the interval between reservations should be widened.

• Korean Journal of Radiology
• /
• 제20권8호
• /
• pp.1266-1274
• /
• 2019

Objective: To determine whether radiologic extranodal extension (ENE) appearing on pretreatment CT and MRI could predict the prognosis in patients with human papillomavirus (HPV)-related oropharyngeal squamous cell carcinoma (OPSCC). Materials and Methods: The study population was obtained from a historical cohort diagnosed with HPV-related OPSCC. A total of 134 OPSCC patients who had a metastatic lymph node on pretreatment CT or MRI were included, and radiologic ENE was evaluated by two experienced head and neck radiologists. Kaplan-Meier and multivariate Cox regression analyses were performed to evaluate the impact of radiologic ENE on progression-free survival (PFS). The diagnostic performance of CT and MRI for the diagnosis of ENE was also evaluated in patients who underwent neck dissection. Results: Seventy patients (52.2%) showed radiologic ENE-positive findings. Although patients showing radiologic ENE had a worse 3-year PFS (83.7% vs. 95.3%, p = 0.023), the association between radiologic ENE and PFS was not statistically significant on multivariate analysis (p = 0.141; hazard ratio, 2.68; 95% confidence interval, 0.72-9.97). CT or MRI had a sensitivity of 62%, specificity of 77.8%, and accuracy of 71.9% for predicting pathologic ENE. Conclusion: Radiologic ENE on CT or MRI did not predict poor PFS in patients with HPV-related OPSCC, although there was a trend towards worse PFS. Further studies are warranted to determine whether radiologic ENE is a useful imaging biomarker to risk-stratify patients with HPV-related OPSCC.

• 대한방사선협회지
• /
• 제27권2호
• /
• pp.269-279
• /
• 2001

A men who has obtain a license of radiotechnologist from the government engaging in the Dept. of radiology as a technologist at various hospitals. They can engage in various part such as Diagnosis radiology, Radiation therapy, Sonography and Nuclear medic

• Clinics in Shoulder and Elbow
• /
• 제7권1호
• /
• pp.14-22
• /
• 2004

Purpose: To evaluate a usefulness of the simple radiograph in the patients with chronic shoulder pain 50 years and older. Material and method: 1152 patients with chronic shoulder pain and 100 asymptomatic individuals were involved in this study. All patients were 50 years and older. We excluded patients who had a history of fracture or dislocation. Radiographic interpretation was performed on a shoulder AP view, an axillary view and a supraspinatus outlet view. For statistical analysis, a chi-square test was performed. A p value of <0.05 was considered statistically significant. Results: Abnormal radiologic findings were identified in 369(32%) out of 1152 patients with a shoulder pain: greater tuberosity sclerosis, acromial sclerosis, subacromial osteophytes are common abnormal radiologic findings. A rotator cuff tear or impingement syndrome was identified on a final diagnosis in 61(85.2%) out of the 76 patients with radiologic abnormalities in both greater tuberosity and acromion (p<0.05). Abnormal radiologic findings were identified in 18% of the asymptomatic individuals. Conclusion: Simple radiographic analysis is an important primary diagnostic tool in patients (50 years and old) with chronic shoulder pain.

• 대한방사선기술학회지:방사선기술과학
• /
• 제22권1호
• /
• pp.73-78
• /
• 1999

The purposes of this study are to analyze the realities after enforcements of safety control regulations for diagnostic X-ray equipments and to suggest means for an improvement of low radiation safety control. A questionnaire survey for medical radiologic technologists was carried out to determine enforcement effects of the safety control regulations. The results of analysis from the survey are as follows. That is, most of the respondents realized the importance of the radiation safety control system, but about a half of them revealed that the regulations were not well observed in accordance with their purposes. Only 43.9% of the respondents took an active part in quality control and safety control of radiation. And respondents responsibility, sex, age, and knowledge for safety control were important indicators for observations of the regulations. Trainings for the safety control regulations are needed to ensure safety control and proper usage of diagnostic X-ray equipments. And management of organizations using diagnostic X-ray equipments have to understand and stress the importance of radiation safety control system.

• Maxillofacial Plastic and Reconstructive Surgery
• /
• 제23권3호
• /
• pp.238-243
• /
• 2001

Purpose : The purpose of this study was to determine radiologic variables affecting extraction of impacted mandibular third molar. Materials and Methods : This study was investigated on 44 consecutive extractions of unilateral impacted mandibular third molars (Male;34, Female;10, Mean age;24.98, Age range;19-35). Fourteen radiologic variables, which were actual value except only one, were evaluated to establish their relation to the operation time. The Pearson correlation coefficient and Stepwise procedures for regression analysis were carried out. Results : Eight variables (depth, angulation, ramus width, relationship to the second molar, distal ramus depth, mesial ramus depth, mesial periodontal ligament width and follicle) showed a statistically significant relation to the operation time(Pearson correlation coefficient, p<0.05). Two variables, depth and mesial periodontal ligament width, showed the most powerful and just relation to the operation time($r^2$ = 0.349, p<0.05). Conclusion : This study shows that our results can help general practioner to estimate the operation time of extraction of impacted mandibular third molars by measuring two radiologic variables ; depth and mesial periondontal ligament width.

• Clinics in Shoulder and Elbow
• /
• 제25권3호
• /
• pp.173-181
• /
• 2022

Background: Healing of the tendon itself is not always related to successful clinical outcomes after rotator cuff repair. It was hypothesized that certain radiologic factors affecting clinical outcomes could exist in case of the retear after arthroscopic rotator cuff repair (ARCR) and the radiologic factors could help predict clinical process. The purpose of this study was to identify the radiologic factors associated with clinical outcomes of the retear after ARCR. Methods: Between January 2012 and December 2019, among patients with sufficient footprint coverage for ARCR, 96 patients with Sugaya classification 4 or higher retear on follow-up magnetic resonance imaging were included. The association between clinical outcomes such as American Shoulder and Elbow Surgeons (ASES) score, Constant score and range of motion and radiologic variables such as initial tear dimension, retear dimension, variance of tear dimension, critical shoulder angle, acromial index, and acromiohumeral distance was analyzed. Results: Preoperatively, the ASES and Constant scores were 59.81±17.02 and 64.30±15.27, respectively. And at the last follow-up, they improved to 81.56±16.29 and 78.62±14.16, respectively (p<0.01 and p<0.01). In multiple linear regression analysis, the variance of the mediolateral dimension of tear had statistically significant association with the ASES and Constant scores (p<0.01 and p=0.01). Conclusions: In patients with the retear after ARCR, the variance in the mediolateral dimension of tear had significantly negative association with the clinical outcomes. This could be considered to be reference as relative criteria and needed more sample and mechanical study.

• 디지털융복합연구
• /
• 제15권7호
• /
• pp.489-495
• /
• 2017

방사선사 면허 취득자에 대한 공급과잉이 되는 현상을 예방하기 위해서는 방사선 관련 새로운 일자리를 창출하기 위한 방사선 관련 학계 및 의료계의 노력이 우선되어야겠다. 그러나 이와 함께 방사선 관련 인력 수급을 면밀하게 분석하여 현황을 파악하는 것도 필요하다. 이에 본 연구에서는 국내 방사선사 인력 수급현황을 분석함으로써, 향후 방사선 관련 정책 및 계획수립에 도움을 주는 기초자료를 제공하고자 수행되었다. 그 결과 다음을 알 수 있었다. 첫째, 방사선사 면허 취득자는 꾸준히 증가하여 2004년도 대비 2014년도의 면허취득자 증가 수는 15,639명으로 75.6% 정도 증가하였다. 둘째, 방사선 관련 종사자들의 취업분야는 의료관련 분야가 65.7%로 대부분을 차지한 것으로 나타났다. 셋째, 2015년부터 매 5년 간격으로 하여 2030년까지의 방사선사 인력에 대한 공급과 수요를 추계해 보면 2020년경에는 거의 6,000명 정도의 잉여인력이 발생할 것으로 예측되었다. 넷째, 방사선학과 졸업생들의 첫 직장에 대한 만족도는 높지 않은 것으로 나타났다. 이에 의료분야에 취업하는 방사선사들의 취업 병 의원 분야가 보다 확대될 수 있도록 제도적인 보완장치가 필요하다는 점 등이 제언사항으로 도출되었다.