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154 results on '"Lee, Chih-Kuo"'

1. DeNVeR: Deformable Neural Vessel Representations for Unsupervised Video Vessel Segmentation

Author

Wu, Chun-Hung, Chen, Shih-Hong, Hu, Chih-Yao, Wu, Hsin-Yu, Chen, Kai-Hsin, Chen, Yu-You, Su, Chih-Hai, Lee, Chih-Kuo, and Liu, Yu-Lun

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

This paper presents Deformable Neural Vessel Representations (DeNVeR), an unsupervised approach for vessel segmentation in X-ray videos without annotated ground truth. DeNVeR uses optical flow and layer separation, enhancing segmentation accuracy and adaptability through test-time training. A key component of our research is the introduction of the XACV dataset, the first X-ray angiography coronary video dataset with high-quality, manually labeled segmentation ground truth. Our evaluation demonstrates that DeNVeR outperforms current state-of-the-art methods in vessel segmentation. This paper marks an advance in medical imaging, providing a robust, data-efficient tool for disease diagnosis and treatment planning and setting a new standard for future research in video vessel segmentation. See our project page for video results at https://kirito878.github.io/DeNVeR/., Comment: Project page: https://kirito878.github.io/DeNVeR/

Published
2024

9. Detection and Classification of Coronary Artery Plaques in Coronary Computed Tomography Angiography Using 3D CNN

Author

Chen, Jun-Ting, Huang, Yu-Cheng, Roth, Holger, Yang, Dong, Lee, Chih-Kuo, Lee, Wen-Jeng, Wang, Tzung-Dau, Chou, Cheng-Ying, Wang, Weichung, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Puyol Antón, Esther, editor, Pop, Mihaela, editor, Martín-Isla, Carlos, editor, Sermesant, Maxime, editor, Suinesiaputra, Avan, editor, Camara, Oscar, editor, Lekadir, Karim, editor, and Young, Alistair, editor

Published
2022
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15. Differentiating the Prognostic Determinants of Myocardial Steatosis for Heart Failure With Preserved Ejection Fraction by Cardiac Magnetic Resonance Imaging

Author

Lin, Ting‐Tse, primary, Lee, Chih‐Kuo, additional, Huang, Kuan‐Chih, additional, Wu, Cho‐Kai, additional, Lee, Jen‐Kuang, additional, Lan, Chen‐Wei, additional, Su, Mao‐Yuan M., additional, Hwang, Juey‐Jen, additional, Wang, Yi‐Chih, additional, and Lin, Lian‐Yu, additional

Published
2023
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24. Risks and outcomes of critical limb ischemia in hemodialysis patients: a prospective cohort study.

Author

Hsieh, Mu-Yang, Chuang, Shao-Yuan, Lee, Chih-Kuo, Luo, Chien-Ming, Cheng, Chi-Hung, Liao, Min-Tsun, Lin, Po-Lin, Yang, Ten-Fang, and Wu, Chih-Cheng

Subjects
HEMODIALYSIS patients, SYMPTOMS, LONGITUDINAL method, COHORT analysis, PERIPHERAL vascular diseases, TRAUMATIC amputation
Abstract

Background Peripheral arterial disease (PAD) is more common in patients receiving maintenance hemodialysis than in the general population. Critical limb ischemia (CLI), the most severe form of PAD, is associated with high amputation and mortality risk. However, few prospective studies are available evaluating this disease's presentation, risk factors and outcomes for patients receiving hemodialysis. Methods The Hsinchu VA study, a prospective multicentre study, investigated the impact of clinical factors on cardiovascular outcomes of patients receiving maintenance hemodialysis from January 2008 until December 2021. We evaluated the presentations and outcomes of patients with newly diagnosed PAD and the correlations of clinical variables with newly diagnosed CLI. Results Of 1136 study participants, 1038 had no PAD on enrolment. After a median follow-up period of 3.3 years, 128 had newly diagnosed PAD. Of these, 65 presented with CLI, and 25 underwent amputation or died from PAD. Patients presenting with CLI had more below-the-knee (52%) and multi-level (41%) disease, and completely occluded segments (41%), and higher risk for amputation or PAD-related death compared with patients without CLI (27.7% vs 9.5%, P  = .01). After multivariate adjustment, disability, diabetes mellitus, current smoking and atrial fibrillation were significantly associated with newly diagnosed CLI. Conclusions Patients undergoing hemodialysis had higher rates of newly diagnosed CLI than the general population. Those with disabilities, diabetes mellitus, smoking and atrial fibrillation may require careful examination for PAD. Trial registration: Hsinchu VA study, ClinicalTrials.gov identifier: NCT04692636. [ABSTRACT FROM AUTHOR]

Published
2023
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28. Additional file 5 of Use of multimodal dataset in AI for detecting glaucoma based on fundus photographs assessed with OCT: focus group study on high prevalence of myopia

Author

Lim, Wee Shin, Ho, Heng-Yen, Ho, Heng-Chen, Chen, Yan-Wu, Lee, Chih-Kuo, Chen, Pao-Ju, Lai, Feipei, Jang, Jyh-Shing Roger, and Ko, Mei-Lan

Abstract

Additional file 5. The results comparison of multimodal models. Additional File Table 1. Comparison of all model performances in the validation set (Na, PPGb+Gc) groups. Additional File Table 2. Comparison of all model performances in the validation set (Na + PPGb, Gc) groups. Additional File Table 3. Comparison of all model performances in the test set (Na, PPGb+Gc) groups. Additional File Table 4. Comparison of all model performances in the test set (Na + PPGb, Gc) groups.

Published
2022
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29. Additional file 11 of Use of multimodal dataset in AI for detecting glaucoma based on fundus photographs assessed with OCT: focus group study on high prevalence of myopia

Author

Lim, Wee Shin, Ho, Heng-Yen, Ho, Heng-Chen, Chen, Yan-Wu, Lee, Chih-Kuo, Chen, Pao-Ju, Lai, Feipei, Jang, Jyh-Shing Roger, and Ko, Mei-Lan

Abstract

Additional file 11. Publics dataset testing results and error analysis. Additional File Table 8. The test results of different Kaggle datasets with different models.

Published
2022
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33. Additional file 7 of Use of multimodal dataset in AI for detecting glaucoma based on fundus photographs assessed with OCT: focus group study on high prevalence of myopia

Author

Lim, Wee Shin, Ho, Heng-Yen, Ho, Heng-Chen, Chen, Yan-Wu, Lee, Chih-Kuo, Chen, Pao-Ju, Lai, Feipei, Jang, Jyh-Shing Roger, and Ko, Mei-Lan

Abstract

Additional file 7. The characteristics of testing and training sets. Additional File 7 Table 5. Descriptive statistics on training-validation and test datasets. Additional File 7 Figure 1. Training-validation and testing datasets used features box-whisker and violin plots.

Published
2022
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45. Multi-material additive manufacturing of low sintering temperature Bi2Mo2O9 ceramics with Ag floating electrodes by selective laser burnout

Author

Gheisari, Reza, primary, Chamberlain, Henry, additional, Chi-Tangyie, George, additional, Zhang, Shiyu, additional, Goulas, Athanasios, additional, Lee, Chih-Kuo, additional, Whittaker, Tom, additional, Wang, Dawei, additional, Ketharam, Annapoorani, additional, Ghosh, Avishek, additional, Vaidhyanathan, Bala, additional, Whittow, Will, additional, Cadman, Darren, additional, Vardaxoglou, Yiannis C., additional, Reaney, Ian M., additional, and Engstrøm, Daniel S., additional

Published
2020
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48. Efficacy and Safety of Renal Denervation for Patients with Uncontrolled Hypertension in Taiwan: 3-Year Results From the Global SYMPLICITY Registry-Taiwan (GSR-Taiwan)

Author

Lee, Chih-Kuo, Wang, Tzung-Dau, Lee, Ying-Hsiang, Fahy, Martin, Lee, Cheng-Han, Sung, Shih-Hsien, Kao, Hsien-Li, Wu, Yen-Wen, and Lin, Tsung-Hsien

Subjects
Original Article
Abstract

BACKGROUND: It is unclear whether renal denervation (RDN) can safely result in blood pressure (BP) reductions in Asian hypertensive patients and whether such reductions would be sustainable. The study is to assess the safety and efficacy of RDN achieved by either main renal artery ablation using the Symplicity Flex(TM) catheter or main plus branch renal artery ablations using the Symplicity Spyral(TM) catheter in Taiwanese uncontrolled hypertensive patients enrolled in the Global SYMPLICITY Registry (GSR) with 3 years of follow-up. METHODS: The GSR is a prospective, open-label, and all-comer registry to evaluate the safety and effectiveness of RDN in patients with uncontrolled hypertension worldwide. RESULTS: Among 26 patients enrolled (mean age, 59.1 ± 13.8 years), 8 were treated with the Symplicity Flex(TM) catheter, and 18 were treated with the Symplicity Spyral(TM) catheter. Baseline office systolic BP was 168.2 ± 19.8 mmHg and diastolic BP was 89.0 ± 14.3 mmHg. Office BP reductions following RDN were sustained throughout the follow-up periods of up to 3 years in the Symplicity Flex(TM) group and 2 years in the Symplicity Spyral(TM) group. In the Symplicity Flex(TM) group, the office systolic BP reductions were 14.9 ± 14.7 mmHg and 29.7 ± 25.9 mmHg at 3 months and 3 years, respectively (both p < 0.05 from baseline). In the Symplicity Spyral(TM) group, the office systolic BP reductions were 21.2 ± 28.7 mmHg and 42.4 ± 10.7 mmHg at 3 months and 2 years, respectively (both p < 0.05 from baseline). There were no significant changes in heart rate or antihypertensive medication classes. Three protocol-defined adverse events occurred in 2 patients, including new-onset end-stage renal disease, stroke, and hospitalization for new-onset heart failure. CONCLUSIONS: Given the susceptibility of Asian populations to hypertension, RDN, as a safe antihypertensive procedure with long-lasting BP-lowering effects, could reliably serve as an alternative or complementary BP-lowering strategy for patients with uncontrolled hypertension in Taiwan and other Asian countries.

Published
2019

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