Search

Your search keyword '"Kim, Kyung Won"' showing total 35 results
Start Over Author "Kim, Kyung Won" Journal korean journal of radiology
35 results on '"Kim, Kyung Won"'

16. What Is New in the 2017 World Health Organization Classification and 8th American Joint Committee on Cancer Staging System for Pancreatic Neuroendocrine Neoplasms?

Author

Choe, Jooae, primary, Kim, Kyung Won, additional, Kim, Hyoung Jung, additional, Kim, Dong Wook, additional, Kim, Kyu Pyo, additional, Hong, Seung-Mo, additional, Ryu, Jin-Sook, additional, Tirumani, Sree Harsha, additional, Krajewski, Katherine, additional, and Ramaiya, Nikhil, additional

Published
2019
Full Text
View/download PDF

22. Selection and Reporting of Statistical Methods to Assess Reliability of a Diagnostic Test: Conformity to Recommended Methods in a Peer-Reviewed Journal

Author

Park, Ji Eun, primary, Han, Kyunghwa, additional, Sung, Yu Sub, additional, Chung, Mi Sun, additional, Koo, Hyun Jung, additional, Yoon, Hee Mang, additional, Choi, Young Jun, additional, Lee, Seung Soo, additional, Kim, Kyung Won, additional, Shin, Youngbin, additional, An, Suah, additional, Cho, Hyo-Min, additional, and Park, Seong Ho, additional

Published
2017
Full Text
View/download PDF

32. 2023 Survey on User Experience of Artificial Intelligence Software in Radiology by the Korean Society of Radiology.

Author

Hwang EJ, Park JE, Song KD, Yang DH, Kim KW, Lee JG, Yoon JH, Han K, Kim DH, Kim H, and Park CM

Subjects
Humans, Republic of Korea, Surveys and Questionnaires, Radiology, Software, Artificial Intelligence, Societies, Medical
Abstract

Objective: In Korea, radiology has been positioned towards the early adoption of artificial intelligence-based software as medical devices (AI-SaMDs); however, little is known about the current usage, implementation, and future needs of AI-SaMDs. We surveyed the current trends and expectations for AI-SaMDs among members of the Korean Society of Radiology (KSR)., Materials and Methods: An anonymous and voluntary online survey was open to all KSR members between April 17 and May 15, 2023. The survey was focused on the experiences of using AI-SaMDs, patterns of usage, levels of satisfaction, and expectations regarding the use of AI-SaMDs, including the roles of the industry, government, and KSR regarding the clinical use of AI-SaMDs., Results: Among the 370 respondents (response rate: 7.7% [370/4792]; 340 board-certified radiologists; 210 from academic institutions), 60.3% (223/370) had experience using AI-SaMDs. The two most common use-case of AI-SaMDs among the respondents were lesion detection (82.1%, 183/223), lesion diagnosis/classification (55.2%, 123/223), with the target imaging modalities being plain radiography (62.3%, 139/223), CT (42.6%, 95/223), mammography (29.1%, 65/223), and MRI (28.7%, 64/223). Most users were satisfied with AI-SaMDs (67.6% [115/170, for improvement of patient management] to 85.1% [189/222, for performance]). Regarding the expansion of clinical applications, most respondents expressed a preference for AI-SaMDs to assist in detection/diagnosis (77.0%, 285/370) and to perform automated measurement/quantification (63.5%, 235/370). Most respondents indicated that future development of AI-SaMDs should focus on improving practice efficiency (81.9%, 303/370) and quality (71.4%, 264/370). Overall, 91.9% of the respondents (340/370) agreed that there is a need for education or guidelines driven by the KSR regarding the use of AI-SaMDs., Conclusion: The penetration rate of AI-SaMDs in clinical practice and the corresponding satisfaction levels were high among members of the KSR. Most AI-SaMDs have been used for lesion detection, diagnosis, and classification. Most respondents requested KSR-driven education or guidelines on the use of AI-SaMDs., Competing Interests: Eui Jin Hwang reports research grants from Lunit, Coreline Soft, and Monitor Corporation outside the present work. Chang Min Park reports research grants from Lunit and Coreline Soft outside the present work, and stock of Promedius, Lunit and Coreline Soft and stock options of Lunit and Coreline Soft., (Copyright © 2024 The Korean Society of Radiology.)

Published
2024
Full Text
View/download PDF

33. Summary of Key Points of the Response Assessment in Neuro-Oncology (RANO) 2.0.

Author

Won SE, Suh CH, Kim S, Park HJ, and Kim KW

Subjects
Humans, Brain Neoplasms diagnostic imaging, Brain Neoplasms therapy
Abstract

Competing Interests: Chong Hyun Suh, who hold respective positions on the Assistants to the Editor of the Korean Journal of Radiology, were not involved in the editorial evaluation or decision to publish this article. The remaining author has declared no conflicts of interest.

Published
2024
Full Text
View/download PDF

34. Influence of B 1 -Inhomogeneity on Pharmacokinetic Modeling of Dynamic Contrast-Enhanced MRI: A Simulation Study.

Author

Park B, Choi BS, Sung YS, Woo DC, Shim WH, Kim KW, Choi YS, Pae SJ, Suh JY, Cho H, and Kim JK

Subjects
Contrast Media chemistry, Gadolinium chemistry, Gray Matter diagnostic imaging, Humans, Image Enhancement, Magnetic Resonance Imaging instrumentation, Monte Carlo Method, Phantoms, Imaging, Contrast Media metabolism, Magnetic Resonance Imaging methods, Models, Theoretical
Abstract

Objective: To simulate the B 1 -inhomogeneity-induced variation of pharmacokinetic parameters on dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI)., Materials and Methods: B 1 -inhomogeneity-induced flip angle (FA) variation was estimated in a phantom study. Monte Carlo simulation was performed to assess the FA-deviation-induced measurement error of the pre-contrast R 1 , contrast-enhancement ratio, Gd-concentration, and two-compartment pharmacokinetic parameters (K trans , v e , and v p )., Results: B 1 -inhomogeneity resulted in -23-5% fluctuations (95% confidence interval [CI] of % error) of FA. The 95% CIs of FA-dependent % errors in the gray matter and blood were as follows: -16.7-61.8% and -16.7-61.8% for the pre-contrast R 1 , -1.0-0.3% and -5.2-1.3% for the contrast-enhancement ratio, and -14.2-58.1% and -14.1-57.8% for the Gd-concentration, respectively. These resulted in -43.1-48.4% error for K trans , -32.3-48.6% error for the v e , and -43.2-48.6% error for v p . The pre-contrast R 1 was more vulnerable to FA error than the contrast-enhancement ratio, and was therefore a significant cause of the Gd-concentration error. For example, a -10% FA error led to a 23.6% deviation in the pre-contrast R 1 , -0.4% in the contrast-enhancement ratio, and 23.6% in the Gd-concentration. In a simulated condition with a 3% FA error in a target lesion and a -10% FA error in a feeding vessel, the % errors of the pharmacokinetic parameters were -23.7% for K trans , -23.7% for v e , and -23.7% for v p ., Conclusion: Even a small degree of B 1 -inhomogeneity can cause a significant error in the measurement of pharmacokinetic parameters on DCE-MRI, while the vulnerability of the pre-contrast R 1 calculations to FA deviations is a significant cause of the miscalculation.

Published
2017
Full Text
View/download PDF

35. Evaluation of the in vivo efficiency and safety of hepatic radiofrequency ablation using a 15-G Octopus® in pig liver.

Author

Lee ES, Lee JM, Kim KW, Lee IJ, Han JK, and Choi BI

Subjects
Animals, Liver diagnostic imaging, Statistics, Nonparametric, Swine, Tomography, X-Ray Computed, Catheter Ablation methods, Electrocoagulation instrumentation, Electrodes, Liver surgery
Abstract

Objective: To determine in vivo efficacy of radiofrequency ablation (RFA) in porcine liver by using 15-gauge Octopus® (15-G Octopus®) electrodes to create a large coagulation., Materials and Methods: A total of 18 coagulations were created by using a 180-W generator and 15-G Octopus® electrodes during laparotomy, performed in 14 pigs. Coagulation necrosis was created in the pig livers by the use of one of three RFA protocols: 1) group A, monopolar RFA using a 15-G Octopus® electrode with a 5-mm inter-electrode distance (n = 4); 2) group B, monopolar RFA using a 15-G Octopus® electrode with a 10-mm inter-electrode distance (n = 6); and 3) group C, switching monopolar RFA using two 15-G Octopus® electrodes (n = 8). The energy efficiency, shape, maximum and minimum diameters (Dmx and Dmi), and the volume of the coagulation volume were measured in each group. The Summary statistics were obtained and Mann-Whitney test was were performed., Results: The mean ablated volume of each group was 49.23 cm(3) in A, 64.11 cm(3) in B, and 72.35 cm(3) in C. The mean Dmx and Dmi values were 5.68 cm and 4.58 cm in A and 5.97 cm and 4.97 cm in B, respectively. In group C, the mean diameters of Dmx and Dmi were 6.80 cm and 5.11 cm, respectively. The mean ratios of Dmi/Dmx were 1.25, 1.20, and 1.35 in groups A, B, and C, respectively. There was one animal death during the RFA procedure, the cause of which could not be subsequently determined. However, there were no other significant, procedure-related complications during the seven-hour-delayed CT scans., Conclusion: RFA procedures using 15-G Octopus® electrodes are useful and safe for creating a large ablation in a single electrode model as well as in the multiple electrodes model.

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results