• Korean Journal of Radiology
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• v.24 no.5
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• pp.454-464
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• 2023

Objective: We aimed to investigate current expectations and clinical adoption of artificial intelligence (AI) software among neuroradiologists in Korea. Materials and Methods: In April 2022, a 30-item online survey was conducted by neuroradiologists from the Korean Society of Neuroradiology (KSNR) to assess current user experiences, perceptions, attitudes, and future expectations regarding AI for neuro-applications. Respondents with experience in AI software were further investigated in terms of the number and type of software used, period of use, clinical usefulness, and future scope. Results were compared between respondents with and without experience with AI software through multivariable logistic regression and mediation analyses. Results: The survey was completed by 73 respondents, accounting for 21.9% (73/334) of the KSNR members; 72.6% (53/73) were familiar with AI and 58.9% (43/73) had used AI software, with approximately 86% (37/43) using 1-3 AI software programs and 51.2% (22/43) having up to one year of experience with AI software. Among AI software types, brain volumetry software was the most common (62.8% [27/43]). Although 52.1% (38/73) assumed that AI is currently useful in practice, 86.3% (63/73) expected it to be useful for clinical practice within 10 years. The main expected benefits were reducing the time spent on repetitive tasks (91.8% [67/73]) and improving reading accuracy and reducing errors (72.6% [53/73]). Those who experienced AI software were more familiar with AI (adjusted odds ratio, 7.1 [95% confidence interval, 1.81-27.81]; P = 0.005). More than half of the respondents with AI software experience (55.8% [24/43]) agreed that AI should be included in training curriculums, while almost all (95.3% [41/43]) believed that radiologists should coordinate to improve its performance. Conclusion: A majority of respondents experienced AI software and showed a proactive attitude toward adopting AI in clinical practice, suggesting that AI should be incorporated into training and active participation in AI development should be encouraged.

• Korean Journal of Radiology
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• v.22 no.2
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• pp.263-280
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• 2021

Percutaneous transthoracic needle biopsy (PTNB) is one of the essential diagnostic procedures for pulmonary lesions. Its role is increasing in the era of CT screening for lung cancer and precision medicine. The Korean Society of Thoracic Radiology developed the first evidence-based clinical guideline for PTNB in Korea by adapting pre-existing guidelines. The guideline provides 39 recommendations for the following four main domains of 12 key questions: the indications for PTNB, pre-procedural evaluation, procedural technique of PTNB and its accuracy, and management of post-biopsy complications. We hope that these recommendations can improve the diagnostic accuracy and safety of PTNB in clinical practice and promote standardization of the procedure nationwide.

• Korean Journal of Digital Imaging in Medicine
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• v.2 no.1
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• pp.132-139
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• 1996

The clinical implementation and management of a centralized PACS for efficient softcopy operation is presented. Exam requests from OS, NS, NR, ER and ICUs which account for 50% of all radiological exams are read and archived in PACS. PACS is a clinical tool used by the radiologists and clinicians in daily practice, and without their full support and cooperation, PACS would Indeed be impossible to manage.

• Korean Journal of Radiology
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• v.19 no.6
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• pp.1147-1160
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• 2018

Soft-tissue calcification refers to a broad category of lesions. Calcifications are frequently identified by radiologists in daily practice. Using a simple algorithm based on the distribution pattern of the lesions and detailed clinical information, these calcified lesions can be systematically evaluated. The distribution pattern of the calcific deposits enables initial division into calcinosis circumscripta and calcinosis universalis. Using laboratory test results (serum calcium and phosphate levels) and clinical history, calcinosis circumscripta can be further categorized into four subtypes: dystrophic, iatrogenic, metastatic, and idiopathic calcification. This pictorial essay presents a systematic approach to the imaging features of soft-tissue calcifications and related diseases.

• Korean Journal of Radiology
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• v.24 no.1
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• pp.22-30
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• 2023

Ultrasonography (US) is a primary imaging modality for diagnosing nodular thyroid disease and has an essential role in identifying the most appropriate management strategy for patients with nodular thyroid disease. Standardized imaging techniques and reporting formats for thyroid US are necessary. For this purpose, the Korean Society of Thyroid Radiology (KSThR) organized a task force in June 2021 and developed recommendations for standardized imaging technique and reporting format, based on the 2021 KSThR consensus statement and recommendations for US-based diagnosis and management of thyroid nodules. The goal was to achieve an expert consensus applicable to clinical practice.

• Imaging Science in Dentistry
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• v.50 no.3
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• pp.265-267
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• 2020

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.29 no.2
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• pp.387-396
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• 1999

In dentistry. RadioVisioGraphy was introduced as a first electronic dental x-ray imaging modality in 1989. Thereafter. many types of direct digital radiographic system have been produced in the last decade. They are based either on charge-coupled device(CCD) or on storage phosphor technology. In addition. new types of digital radiographic system using amorphous selenium. image intensifier etc. are under development. Advantages of digital radiographic system are elimination of chemical processing, reduction in radiation dose. image processing, computer storage. electronic transfer of images and so on. Image processing includes image enhancement. image reconstruction. digital subtraction, etc. Especially digital subtraction and reconstruction can be applied in many aspects of clinical practice and research. Electronic transfer of images enables filmless dental hospital and teleradiology/teledentistry system. Since the first image management and communications system(IMACS) for dentomaxillofacial radiology was reported in 1992. IMACS in dental hospital has been increasing. Meanwhile. researches about computer-assisted diagnosis, such as structural analysis of bone trabecular patterns of mandible. feature extraction, automated identification of normal landmarks on cephalometric radiograph and automated image analysis for caries or periodontitis. have been performed actively in the last decade. Further developments in digital radiographic imaging modalities. image transmission system. imaging processing and automated analysis software will change the traditional clinical dental practice in the 21st century.

• The Journal of the Korea Contents Association
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• v.10 no.9
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• pp.276-284
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• 2010

The purpose of this study was to investigate satisfacation level of clinical practice and related variables to develop more effective learning program for students in the department of radiology. We surveyed 138 students who participated in the clinical practice program and they were university or college students in the area of Busan and Kyungnam. As a result, the satisfaction level of professional guidance were the highest and the satisfaction level of practice evaluation were the lowest. In the college students, the satisfaction level of the professional guidance were the highest and the satisfaction level of practice environment were the lowest. In the university students, the satisfaction level of the practice duration were the highest and the satisfaction level of practice evaluation were the lowest. The results of multiple regression analysis between the satisfaction level and the related variables indicated that the status of radiologist in the clinical practice are the major component in the college students and the status of radiologist in the academic duration and the clinical experience are the major component that contribute the satisfaction level in the university students.

• Korean Journal of Radiology
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• v.25 no.4
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• pp.351-362
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• 2024

Objective: To measure inter-reader agreement and identify associated factors in interpreting complete response (CR) on magnetic resonance imaging (MRI) following chemoradiotherapy (CRT) for rectal cancer. Materials and Methods: This retrospective study involved 10 readers from seven hospitals with experience of 80-10210 cases, and 149 patients who underwent surgery after CRT for rectal cancer. Using MRI-based tumor regression grading (mrTRG) and methods employed in daily practice, the readers independently assessed mrTRG, CR on T2-weighted images (T2WI) denoted as mrCR_T2W, and CR on all images including diffusion-weighted images (DWI) denoted as mrCR_overall. The readers described their interpretation patterns and how they utilized DWI. Inter-reader agreement was measured using multi-rater kappa, and associated factors were analyzed using multivariable regression. Correlation between sensitivity and specificity of each reader was analyzed using Spearman coefficient. Results: The mrCR_T2W and mrCR_overall rates varied widely among the readers, ranging 18.8%-40.3% and 18.1%-34.9%, respectively. Nine readers used DWI as a supplement sequence, which modified interpretations on T2WI in 2.7% of cases (36/1341 [149 patients × 9 readers]) and mostly (33/36) changed mrCR_T2W to non-mrCR_overall. The kappa values for mrTRG, mrCR_T2W, and mrCR_overall were 0.56 (95% confidence interval: 0.49, 0.62), 0.55 (0.52, 0.57), and 0.54 (0.51, 0.57), respectively. No use of rectal gel, larger initial tumor size, and higher initial cT stage exhibited significant association with a higher interreader agreement for assessing mrCR_overall (P ≤ 0.042). Strong negative correlations were observed between the sensitivity and specificity of individual readers (coefficient, -0.718 to -0.963; P ≤ 0.019). Conclusion: Inter-reader agreement was moderate for assessing CR on post-CRT MRI. Readers' varying standards on MRI interpretation (i.e., threshold effect), along with the use of rectal gel, initial tumor size, and initial cT stage, were significant factors associated with inter-reader agreement.

• Journal of Korean society of Dental Hygiene
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• v.5 no.1
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• pp.101-121
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• 2005

The frequency of clinical observation and clinical practice and satisfaction among dental hygiene students were investigated during the clinical practice process. The results were analyzed to come up with a more effective clinical practice program and provide basic data that would aid in actual operation of clinical practice. The tool used in this study was a survey composed of 11 areas with a total of 55 questions. It was distributed to 471 graduating dental hygiene students at 5 different universities. The Cronbach's Alpha coefficient was .975. The data were analyzed using SPSS 10.0 for Windows. Significance was determined at ${\alpha}$=0.05. The results were as follows. 1. The results of analyzing the frequency of clinical observation according to the different clinical areas showed that the score was the highest in the area of basic diagnosis, followed by prosthodontics, operative dentistry, hospital service management, oral surgery, oral radiology, periodontics, preventive dentistry, orthodontics, pediatric dentistry, and oral medicine. 2. The results of analyzing the frequency of clinical performance according to different clinical areas showed that the score was the highest in the area of basic diagnosis, followed by operative dentistry, oral surgery, prosthodontics, oral radiology, pediatric dentistry, orthodontics, oral medicine, preventive dentistry, endodontics and hospital service management 3. The area that showed most significance difference between the frequency of clinical observation and the frequency of clinical performance was the area of hospital service management, followed by prosthodontics, periodontics, preventive dentistry, oral radiology, oral medicine/oral surgery, orthodontics, operative dentistry, and pediatric dentistry. 4. When satisfaction in dental hygiene students was analysed according to different clinical areas, they were most satisfied practicing in basic diagnosis, followed by operative dentistry, prosthodontics, oral surgery, oral radiology, pediatric dentistry, orthodontics, preventive dentistry, hospital service management, periodontics, and oral medicine.