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170 results on '"Hsieh, Mu-Yang"'

9. Automated Left Ventricle Segmentation in Echocardiography Using YOLO: A Deep Learning Approach for Enhanced Cardiac Function Assessment.

Author

Balasubramani, Madankumar, Sung, Chih-Wei, Hsieh, Mu-Yang, Huang, Edward Pei-Chuan, Shieh, Jiann-Shing, and Abbod, Maysam F.

Subjects
DEEP learning, IMAGE segmentation, IMAGE analysis, FEATURE extraction, COMPUTER-assisted image analysis (Medicine), ECHOCARDIOGRAPHY
Abstract

Accurate segmentation of the left ventricle (LV) using echocardiogram (Echo) images is essential for cardiovascular analysis. Conventional techniques are labor-intensive and exhibit inter-observer variability. Deep learning has emerged as a powerful tool for automated medical image segmentation, offering advantages in speed and potentially superior accuracy. This study explores the efficacy of employing a YOLO (You Only Look Once) segmentation model for automated LV segmentation in Echo images. YOLO, a cutting-edge object detection model, achieves exceptional speed–accuracy balance through its well-designed architecture. It utilizes efficient dilated convolutional layers and bottleneck blocks for feature extraction while incorporating innovations like path aggregation and spatial attention mechanisms. These attributes make YOLO a compelling candidate for adaptation to LV segmentation in Echo images. We posit that by fine-tuning a pre-trained YOLO-based model on a well-annotated Echo image dataset, we can leverage the model's strengths in real-time processing and precise object localization to achieve robust LV segmentation. The proposed approach entails fine-tuning a pre-trained YOLO model on a rigorously labeled Echo image dataset. Model performance has been evaluated using established metrics such as mean Average Precision (mAP) at an Intersection over Union (IoU) threshold of 50% (mAP50) with 98.31% and across a range of IoU thresholds from 50% to 95% (mAP50:95) with 75.27%. Successful implementation of YOLO for LV segmentation has the potential to significantly expedite and standardize Echo image analysis. This advancement could translate to improved clinical decision-making and enhanced patient care. [ABSTRACT FROM AUTHOR]

Published
2024
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21. 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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33. Deterioration of Deceleration Capacity of Heart Rate is Associated with Left Ventricular Hypertrophy in End-Stage Renal Disease Population

Author

Lin, Ting-Tse, Yang, Wei-Shun, Hsieh, Mu-Yang, Wu, Chih-Chen, and Lin, Lian-Yu

Subjects
Original Article
Abstract

Left ventricular hypertrophy (LVH) is prevalent in patients with end-stage renal disease (ESRD), and may be secondary to arterial stiffness and volume overload. It is unclear whether LVH is caused by autonomic nerve dysregulation (AND), a frequent condition in patients with ESRD that is characterized by sympathetic hyperactivity and vagal withdrawal. We hypothesized that AND estimated by heart rate variability (HRV) may be associated with LVH in patients with ESRD.We prospectively enrolled patients with ESRD undergoing hemodialysis. Cardiac function and LVH were assessed using echocardiography according to the recommendations of the American Society of Echocardiography. Holter recordings were used to quantify HRV and deceleration capacity (DC). Dataon comorbidities and medications, and serum markers were obtained. Logistic regression analysis was performed.Among the 281 included patients, 63% had LVH. The patients with LVH were older, had more comorbidities and advanced diastolic dysfunction than those without LVH. The root mean square of successive differences (rMSSD) (9.10 ± 5.44 versus 13.25 ± 8.61; p = 0.004) and DC (2.08 ± 1.90 versus 3.89 ± 1.45; p = 0.021) were lower in the patients with LVH than that in those without LVH. Multivariate regression analysis showed that hypertension, asymmetrical dimethylarginine (ADMA), advanced diastolic dysfunction grade, rMSSD, and DC were independently associated with LVH. Among these variables, DC and ADMA showed the highest diagnostic value for LVH with areas under curves of 0.701 and 0.751, respectively.AND is independently associated with LVH in patients with ESRD.

Published
2018

37. Relationship Between Body Mass Index, Antidiabetic Agents, and Midterm Mortality in Patients With Both Type 2 Diabetes Mellitus and Acute Coronary Syndrome

Author

Jong, Chien‐Boon, primary, Li, Hung‐Yuan, additional, Pan, Shin‐Liang, additional, Hsieh, Mu‐Yang, additional, Su, Fang‐Ying, additional, Chen, Kuan‐Chun, additional, Yin, Wei‐Hsian, additional, Chan, Shih‐Hung, additional, Wu, Yen‐Wen, additional, Wang, Kuo‐Yung, additional, Chang, Kuan‐Cheng, additional, Hwang, Juey‐Jen, additional, and Wu, Chih‐Cheng, additional

Published
2019
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39. Recruiting an Acute Coronary Team to Perform Emergent Mechanical Thrombectomy in Acute Ischemic Stroke Patients: A Successful Case and Team Model in a Local Hospital

Author

Meng, Shih-Wei, Kuo, Ruei-Cheng, Yang, Hui-Jen, Lai, Chao-Lun, Wu, Chih-Cheng, and Hsieh, Mu-Yang

Subjects
Case Report
Abstract

Stroke treatment has entered a new era after the publication of multiple randomized trials involving the use of a stent retriever since 2015. In Taiwan, the demand for interventional neuroradiologists to perform mechanical thrombectomy is high. For this reason, providing this standard care requires reshaping of the care model. Here, we report our experience in recruiting an acute coronary care team to perform emergent mechanical thrombectomy, which is essential in a patient with acute ischemic stroke.

Published
2018

40. Endovascular Treatment for Acute Mesenteric Ischemia

Author

Hsieh, Mu-Yang

Subjects
Medical
Abstract

The current standard care for acute mesenteric ischemia involves urgent revascularization and resection of the necrotic bowel. A dedicated protocol for early treatment and urgent revascularization is pivotal to improving diagnostic rate and patient survival. In this chapter, the critical components of diagnosis and treatment protocol are reviewed. Different treatment choices with endovascular approaches are discussed. After endovascular revascularization, a dedicated team consisting of surgeons and critical care specialists are needed to provide post-intervention care and second-look laparoscopy when necessary. In geographic regions where healthcare resources are lacking, a time-efficient strategy adopted by interventional radiologists or cardiologists should be considered to improve patient survival.

Published
2018

46. Pulmonary Hypertension in Hemodialysis Patients Following Repeated Endovascular Thrombectomy

Author

Hsieh, Mu-Yang, Lin, Lin, Chen, Tsung-Yan, Wang, Ren-Huei, Huang, Su-Chin, Liu, HsiuChiao, Lai, Chao-Lun, Pu, Shih-Yen, Tsai, Kuei-Chin, and Wu, Chih-Cheng

Subjects
Original Article
Abstract

The prevalence of pulmonary hypertension is unusually high in Taiwanese patients with end-stage renal disease. Thrombosis of hemodialysis grafts is common and pulmonary embolism has been reported after endovascular thrombectomy. The aim of this study was to evaluate the relationship between pulmonary hypertension and endovascular thrombectomy of hemodialysis grafts.One hundred and ten patients on hemodialysis via arteriovenous grafts were enrolled in our study. The mean pulmonary artery pressure (PAP) was measured by right heart catheterization. Clinical information was collected by review of medical records. Comorbid cardiopulmonary disease was evaluated by echocardiography and chest X-ray. The history of patient vascular access thrombosis was reviewed from database, hemodialysis records, and interviews with staff at hemodialysis centers.Fifty-two participants (47%) had pulmonary hypertension diagnosed by right heart catheterization. There was no difference in the number of thrombectomy procedures between patients with and without pulmonary hypertension. Based on multivariate analysis, the number of prior endovascular thrombectomy procedures did not correlate with mean PAP (F-value = 1.10, p = 0.30) nor was it associated with pulmonary hypertension (odds ratio = 0.92, p = 0.17).Prior endovascular arteriovenous graft thrombectomies were not associated with pulmonary hypertension or increased mean PAP in end-stage renal disease patients on maintenance hemodialysis.

Published
2016

47. Metformin Was Associated with Lower All-Cause Mortality in Type 2 Diabetes with Acute Coronary Syndrome: A Nationwide Registry with Propensity Score-Matched Analysis

Author

Jong, Chien-Boon, primary, Lai, Chao-Lun, additional, Chen, Kuan-Yu, additional, Hsieh, Mu-Yang, additional, Su, Fang-Ying, additional, Wu, Chih-Cheng, additional, Voon, Wen-Chol, additional, Hsieh, I-Chang, additional, Shyu, Kou-Gi, additional, Chong, Jun-Ted, additional, Lin, Wei-Shiang, additional, Hsu, Chih-Neng, additional, and Ueng, Kwo-Chang, additional

Published
2018
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