1.Induction chemotherapy in locally advanced cervical cancer.
Yong Hak KIM ; Byung Gyu YOO ; Ki Tae KIM ; Hyun Chan KIM
Korean Journal of Obstetrics and Gynecology 1992;35(9):1288-1299
No abstract available.
Induction Chemotherapy*
;
Uterine Cervical Neoplasms*
2.A Case of Multiple Skeletal Tuberculosis with Spina Ventosa: A Case Report
Byung Duk PARK ; Dong Hae KIM ; Hyun Gyu KIM ; Kyung Soo YOO
The Journal of the Korean Orthopaedic Association 1976;11(2):220-224
A case of multiple skeletal tuberculosis with spina ventosa proved by radiological and pathologicaI methods in 3 year old Korean male child is reported. It was treated with antituberculous chemotherapy (triple method of PAS, INAH, streptomycin). At follow up check within 2 years, we obtained good healing process without other complication.
Child
;
Drug Therapy
;
Follow-Up Studies
;
Humans
;
Male
;
Methods
;
Tuberculosis
3.Clinical and pathological observation on the diagnosis and treatment of cervical intraepithelial neoplasia III(CIN III) of the uterine cervix.
Byung Gyu YOO ; Jung Hyung LEE ; Jae Young LEE ; Eun Kwan LEE ; Ki Tae KIM ; Hyun Chan KIM
Korean Journal of Obstetrics and Gynecology 1993;36(3):366-376
No abstract available.
Cervical Intraepithelial Neoplasia*
;
Cervix Uteri*
;
Diagnosis*
;
Female
4.Effect of Torque Heel on Excessive External Rotation of Hemiplegic Foot: Three Dimensional Gait Analysis.
Byung Gyu JOO ; Jong Yoon YOO ; Sang Bae HA
Journal of the Korean Academy of Rehabilitation Medicine 1998;22(5):1114-1122
OBJECTIVE: Excessive external rotation of the hemiplegic foot is a common problem of hemiplegic gait. There has been a few report on etiological investigation and corrective measurement of an excessive external rotation of hemiplegic foot. Thus we present a newly designed Torque heel to correct the external rotation of hemiplegic foot. METHOD: Ten hemiparetic patients with an excessive external rotation of affected foot participated in this study. All of the participants were able to walk at least 10 meters with metal a ankle foot orthosis (AFO) using a single cane. Each of these patients was placed on four tries of walk: (1) on a bare foot; (2) with an AFO; (3) with an AFO and a quarter inch of lateral wedge; and (4) with an AFO and the Torque heel . Gait patterns were analysed by the Vicon 370, three dimensional motion analyser. RESULTS: The speed and stride length increased in all tries except for the bare foot walk. Those who walked with the assistive devices showed no difference in the speed and stride length. All the participants showed an increased in external rotation of pelvis and ankle. Those who walked with an AFO and Torque heel presented a decrease in the external rotation of foot and pelvis. The hip and ankle motions of the hemiplegic limbs were not affected with the AFO and Torque heel . A significant degree of correction in pelvic rotation with an AFO and Torque heel was noted. CONCLUSIONS: This study indicates that an AFO with Torque heel is beneficial to the correction of external rotation of a hemiplegic foot. And the excessive external rotation of hemiplegic foot may be due possibly to the external rotation of pelvis.
Ankle
;
Canes
;
Extremities
;
Foot Orthoses
;
Foot*
;
Gait Disorders, Neurologic
;
Gait*
;
Heel*
;
Hip
;
Humans
;
Pelvis
;
Self-Help Devices
;
Torque*
5.Institution-Specific Autosegmentation for Personalized Radiotherapy Protocols
Wonyoung CHO ; Gyu Sang YOO ; Won Dong KIM ; Yerim KIM ; Jin Sung KIM ; Byung Jun MIN
Progress in Medical Physics 2024;35(4):205-213
Purpose:
This study explores the potential of artificial intelligence (AI) in optimizing radiotherapy protocols for personalized cancer treatment. Specifically, it investigates the role of AI-based segmentation tools in improving accuracy and efficiency across various anatomical regions.
Methods:
A dataset of 500 anonymized patient computed tomography scans from Chungbuk National University Hospital was used to develop and validate AI models for segmenting organs-atrisk. The models were tailored for five anatomical regions: head and neck, chest, abdomen, breast, and pelvis. Performance was evaluated using Dice Similarity Coefficient (DSC), Mean Surface Distance, and the 95th Percentile Hausdorff Distance (HD95).
Results:
The AI models achieved high segmentation accuracy for large, well-defined structures such as the brain, lungs, and liver, with DSC values exceeding 0.95 in many cases. However, challenges were observed for smaller or complex structures, including the optic chiasm and rectum, with instances of segmentation failure and infinity values for HD95. These findings highlight the variability in performance depending on anatomical complexity and structure size.
Conclusions
AI-based segmentation tools demonstrate significant potential to streamline radiotherapy workflows, reduce inter-observer variability, and enhance treatment accuracy. Despite challenges with smaller structures, the integration of AI enables dynamic, patient-specific adaptations to anatomical changes, contributing to more precise and effective cancer treatments.Future work should focus on refining models for anatomically complex structures and validating these methods in diverse clinical settings.
6.Institution-Specific Autosegmentation for Personalized Radiotherapy Protocols
Wonyoung CHO ; Gyu Sang YOO ; Won Dong KIM ; Yerim KIM ; Jin Sung KIM ; Byung Jun MIN
Progress in Medical Physics 2024;35(4):205-213
Purpose:
This study explores the potential of artificial intelligence (AI) in optimizing radiotherapy protocols for personalized cancer treatment. Specifically, it investigates the role of AI-based segmentation tools in improving accuracy and efficiency across various anatomical regions.
Methods:
A dataset of 500 anonymized patient computed tomography scans from Chungbuk National University Hospital was used to develop and validate AI models for segmenting organs-atrisk. The models were tailored for five anatomical regions: head and neck, chest, abdomen, breast, and pelvis. Performance was evaluated using Dice Similarity Coefficient (DSC), Mean Surface Distance, and the 95th Percentile Hausdorff Distance (HD95).
Results:
The AI models achieved high segmentation accuracy for large, well-defined structures such as the brain, lungs, and liver, with DSC values exceeding 0.95 in many cases. However, challenges were observed for smaller or complex structures, including the optic chiasm and rectum, with instances of segmentation failure and infinity values for HD95. These findings highlight the variability in performance depending on anatomical complexity and structure size.
Conclusions
AI-based segmentation tools demonstrate significant potential to streamline radiotherapy workflows, reduce inter-observer variability, and enhance treatment accuracy. Despite challenges with smaller structures, the integration of AI enables dynamic, patient-specific adaptations to anatomical changes, contributing to more precise and effective cancer treatments.Future work should focus on refining models for anatomically complex structures and validating these methods in diverse clinical settings.
7.Institution-Specific Autosegmentation for Personalized Radiotherapy Protocols
Wonyoung CHO ; Gyu Sang YOO ; Won Dong KIM ; Yerim KIM ; Jin Sung KIM ; Byung Jun MIN
Progress in Medical Physics 2024;35(4):205-213
Purpose:
This study explores the potential of artificial intelligence (AI) in optimizing radiotherapy protocols for personalized cancer treatment. Specifically, it investigates the role of AI-based segmentation tools in improving accuracy and efficiency across various anatomical regions.
Methods:
A dataset of 500 anonymized patient computed tomography scans from Chungbuk National University Hospital was used to develop and validate AI models for segmenting organs-atrisk. The models were tailored for five anatomical regions: head and neck, chest, abdomen, breast, and pelvis. Performance was evaluated using Dice Similarity Coefficient (DSC), Mean Surface Distance, and the 95th Percentile Hausdorff Distance (HD95).
Results:
The AI models achieved high segmentation accuracy for large, well-defined structures such as the brain, lungs, and liver, with DSC values exceeding 0.95 in many cases. However, challenges were observed for smaller or complex structures, including the optic chiasm and rectum, with instances of segmentation failure and infinity values for HD95. These findings highlight the variability in performance depending on anatomical complexity and structure size.
Conclusions
AI-based segmentation tools demonstrate significant potential to streamline radiotherapy workflows, reduce inter-observer variability, and enhance treatment accuracy. Despite challenges with smaller structures, the integration of AI enables dynamic, patient-specific adaptations to anatomical changes, contributing to more precise and effective cancer treatments.Future work should focus on refining models for anatomically complex structures and validating these methods in diverse clinical settings.
8.Institution-Specific Autosegmentation for Personalized Radiotherapy Protocols
Wonyoung CHO ; Gyu Sang YOO ; Won Dong KIM ; Yerim KIM ; Jin Sung KIM ; Byung Jun MIN
Progress in Medical Physics 2024;35(4):205-213
Purpose:
This study explores the potential of artificial intelligence (AI) in optimizing radiotherapy protocols for personalized cancer treatment. Specifically, it investigates the role of AI-based segmentation tools in improving accuracy and efficiency across various anatomical regions.
Methods:
A dataset of 500 anonymized patient computed tomography scans from Chungbuk National University Hospital was used to develop and validate AI models for segmenting organs-atrisk. The models were tailored for five anatomical regions: head and neck, chest, abdomen, breast, and pelvis. Performance was evaluated using Dice Similarity Coefficient (DSC), Mean Surface Distance, and the 95th Percentile Hausdorff Distance (HD95).
Results:
The AI models achieved high segmentation accuracy for large, well-defined structures such as the brain, lungs, and liver, with DSC values exceeding 0.95 in many cases. However, challenges were observed for smaller or complex structures, including the optic chiasm and rectum, with instances of segmentation failure and infinity values for HD95. These findings highlight the variability in performance depending on anatomical complexity and structure size.
Conclusions
AI-based segmentation tools demonstrate significant potential to streamline radiotherapy workflows, reduce inter-observer variability, and enhance treatment accuracy. Despite challenges with smaller structures, the integration of AI enables dynamic, patient-specific adaptations to anatomical changes, contributing to more precise and effective cancer treatments.Future work should focus on refining models for anatomically complex structures and validating these methods in diverse clinical settings.
9.Institution-Specific Autosegmentation for Personalized Radiotherapy Protocols
Wonyoung CHO ; Gyu Sang YOO ; Won Dong KIM ; Yerim KIM ; Jin Sung KIM ; Byung Jun MIN
Progress in Medical Physics 2024;35(4):205-213
Purpose:
This study explores the potential of artificial intelligence (AI) in optimizing radiotherapy protocols for personalized cancer treatment. Specifically, it investigates the role of AI-based segmentation tools in improving accuracy and efficiency across various anatomical regions.
Methods:
A dataset of 500 anonymized patient computed tomography scans from Chungbuk National University Hospital was used to develop and validate AI models for segmenting organs-atrisk. The models were tailored for five anatomical regions: head and neck, chest, abdomen, breast, and pelvis. Performance was evaluated using Dice Similarity Coefficient (DSC), Mean Surface Distance, and the 95th Percentile Hausdorff Distance (HD95).
Results:
The AI models achieved high segmentation accuracy for large, well-defined structures such as the brain, lungs, and liver, with DSC values exceeding 0.95 in many cases. However, challenges were observed for smaller or complex structures, including the optic chiasm and rectum, with instances of segmentation failure and infinity values for HD95. These findings highlight the variability in performance depending on anatomical complexity and structure size.
Conclusions
AI-based segmentation tools demonstrate significant potential to streamline radiotherapy workflows, reduce inter-observer variability, and enhance treatment accuracy. Despite challenges with smaller structures, the integration of AI enables dynamic, patient-specific adaptations to anatomical changes, contributing to more precise and effective cancer treatments.Future work should focus on refining models for anatomically complex structures and validating these methods in diverse clinical settings.
10.A Case of Femoral Artery Pseudoaneurysm , which was Developed after Interventional Cardiology Procedure , Treated with Color Doppler Ultrasound-Guided Direct Compression.
Byung Hyun PARK ; Chang Soo CHOI ; Geun Young JANG ; Nam Jin YOO ; Suk Gyu OH ; Jin Won JUNG ; Yang Gyu PARK ; Ok Gyu PARK
Journal of the Korean Society of Echocardiography 2000;8(1):103-106
Vascular complications such as hematoma, pseudoaneurysm and arteriovenous fistula that occur after intracoronary or intracardiac procedures are responsible for considerable morbidity and some mortality. Iatrogenic aneurysms are usually postcatheterization pseudoaneurysms of the femoral artery. Nowadays, it is not uncommon as a consequence of more complex interventional procedures, larger catheters and prolonged anticoagulation treatment. Surgical repair has been mainstay of treatment for pseudoaneurysm. However, recently has it been shown that color Doppler ultrasound-guided direct, noninvasive compression of the pseudoaneurysm stops the blood flow in the communication and lead to pseudoaneurysm clotting and obliteration. We report a case of pseudoaneurysm in femoral artery, which was developed at the right inguinal puncture site in 74 year old male patient with myocardial infarction who had received continuous intravenous infusion of heparin and had undergone primary percutaneous coronary angioplasty and temporary pacemaker insertion treated successfully with color Doppler ultrasound guided direct compression.
Aged
;
Aneurysm
;
Aneurysm, False*
;
Angioplasty
;
Arteriovenous Fistula
;
Cardiology*
;
Catheters
;
Femoral Artery*
;
Hematoma
;
Heparin
;
Humans
;
Infusions, Intravenous
;
Male
;
Mortality
;
Myocardial Infarction
;
Punctures
;
Ultrasonography