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Siang-Hua Victor Chan,Kai-Sing Alain Wong,Yat-Ming Peter Woo,Kwong-Yau Chan,Kar-Ming Leung 대한뇌혈관외과학회 2014 Journal of Cerebrovascular and Endovascular Neuros Vol.16 No.4
Objective : Several modalities are available for volumetric measurement ofthe intracranial aneurysm. We discuss the challenges involved in manualsegmentation, and analyze the application of alternative methods usingautomatic segmentation and geometric formulae in measurement of aneurysmvolumes and coil packing density. Methods : The volumes and morphology of 38 aneurysms treated withendovascular coiling at a single center were measured using three-dimensionalrotational angiography (3DRA) reconstruction software using automaticsegmentation. Aneurysm volumes were also calculated from theirheight, width, depth, size of neck, and assumed shape in 3DRA imagesusing simple geometric formulae. The aneurysm volumes were dichotomizedas "small" or "large" using the median volume of the studied population(54 mm3) measured by automatic segmentation as the cut-off valuefor further statistical analysis. Results : A greater proportion of aneurysms were categorized as being"small" when geometric formulae were applied. The median aneurysm volumesobtained were 54.5 mm3 by 3DRA software, and 30.6 mm3 usingmathematical equations. An underestimation of aneurysm volume with aresultant overestimation in the calculated coil packing density (p = 0.002)was observed. Conclusion : Caution must be exercised in the application of simple geometricformulae in the management of intracranial aneurysms as volumesmay potentially be underestimated and packing densities falsely elevated. Future research should focus on validation of automatic segmentation involumetric measurement and improving its accuracy to enhance its applicationin clinical practice.
An Unusual Cause of Hemoptysis: Congenital Absence of the Right Pulmonary Artery in a Young Male
Chan Victor Siang Hua,Ma Wai Han,Ho Wai Yin,Chan Carmen Wing Sze,Cheung Stephen Chi Wai,Lam Wendy Wai Man 아시아심장혈관영상의학회 2019 Cardiovascular Imaging Asia Vol.3 No.1
Unilateral absent pulmonary artery (UAPA) is rare and can occur in association with cardiovascular anomalies or in isolation. Herein, we describe a case of isolated UAPA in a 14-yearold male patient who presented with hemoptysis secondary to abnormal hypertrophy of collateral vasculature. The patient was successfully treated by endovascular embolization with polyvinyl alcohol particles.
Evaluation of Key Success Factors for Web Design in Taiwan’s Bike Case Study
I-Sung LAI,Yung-Fu HUANG,Jie-Hua SIANG,Ming-Wei WENG 한국유통과학회 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.11
Global warming awareness through energy conservation is growing due to the regulatory policies issued by governments and voluntary organization that established carbon emission limits. Transportation is one of the major contributors to carbon emissions. Bike will be simultaneously saving money, getting fit and helping to reduce global warming. Web design has been identified as a key factor for the acceptance and success of the websites and electronic commerce. The purpose of this research is to investigate the effective implementation of the proposed Analytic Hierarchy Process (AHP) technique on a bike case study whose company (Bike Company) is involved in web design for a critical component in the demonstration. Survey research used a variety of data collection methods, with the most common being questionnaires and interviews of some exporters. The research results reveal that the top five key success factors are Good reputation, Transaction security, Ease of use, Promotion, and Diversified choices, which provide the guidelines and directions for decision-makers to design effective websites in the current competitive business scenario. The major findings of this study are suggesting that Internet marketing channels are securing the company’s relevance, together with paving the way for methods to increase web traffic.