Time filter

Source Type

Chang-hua, Taiwan

Yang S.-F.,National Chung Cheng University | Lin H.-Y.,National Chung Cheng University | Wang M.-L.,Asian Institute of TeleSurgery
IEEE International Symposium on Industrial Electronics | Year: 2014

In this paper, we present an improved marker for optical tracking. The proposed IR pattern can accept up to 50% of occlusion so that we can reduce the requirement of line-of-sight during the instrument tracking. To provide the accurate instrument tracking results for surgeons to manipulate minimally invasive surgery, we integrate both optical tracking and electromagnetic tracking methods into an image guided surgery system. Furthermore, we use a sensor fusion algorithm to fuse the measurements from these subsystems to make the measurement of the system more stable. © 2014 IEEE.

Huang Y.C.,Chang Bing Show Chwan Memorial Hospital | Yen P.S.,Da - Yeh University | Wu S.T.,Taoyuan General Hospital | Chen J.T.,Asian Institute of TeleSurgery | And 5 more authors.
Medicine (United States) | Year: 2015

Alzheimer dementia (AD) is the commonest form of dementia. Although illiteracy is associated with high prevalence of dementia of the Alzheimer type (DAT), their relationship is still unclear. Nevertheless, mild DAT in illiterate participants seems to be due to brain atrophy. In this study, we compared the impact of brain metabolism efficiency in healthy participants and less-educated patients with mild DAT using 2-fluoro-2-deoxy-D-glucose (18F-FDG-PET) positron emission tomography (18F-FDG-PET). Out of 43 eligible less-educated participants with dementia, only 23 (14 women and 9 men) met Diagnostic and Statistical Manual (DSM)-III-R or DSM-IV criteria for DAT and AD and were included. Participants with intracranial insults were excluded by brain magnetic resonance imaging and participants with metabolic or systemic conditions were excluded by blood sampling. In addition, 16 cognitively normal elderly (age 70 years), including 7 women and 9 men, were enrolled in the sham group. The PET imaging data were analyzed using statistical parametric mapping (SPM8) to determine reliability and specificity. Glucose metabolic rate was low in the DAT group, especially in the middle temporal gyrus, middle frontal gyrus, superior frontal gyrus, inferior frontal gyrus, posterior cingulate gyrus, angular gyrus, parahippocampal gyrus, middle occipital gyrus, rectal gyrus, and lingual gyrus. Our results showed that DAT patients with less education not only have prominent clinical signs and symptoms related to dementia but also decreased gray matter metabolism. Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.

Wang M.-L.,Asian Institute of TeleSurgery
Proceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014 | Year: 2014

This research aims to create a medical drilling device where surgeons can receive the signal and data on the computer screen. We analyze the current signal extract from hall effect-based linear current sensor using a Raspberry Pi engineer board to detect the breakthrough signal. © 2014 IEEE.

Leroy J.,University of Strasbourg | Diana M.,University of Strasbourg | Callari C.,University of Strasbourg | Barry B.,University of Strasbourg | And 3 more authors.
Colorectal Disease | Year: 2012

Aim Parastomal herniation of end colostomies can be chronically debilitating for patients and a difficult problem to treat. To prevent parastomal hernia (PSH) formation an extraperitoneal colostomy (EPC) approach has been developed in open colorectal surgery and some studies have suggested a potential advantage to this approach. Here we describe our technique of laparoscopic extraperitoneal stoma formation and present our experience to date. Methods We performed a retrospective analysis of consecutive patients undergoing a laparoscopic abdominoperineal resection between March 1999 and March 2011. We performed the EPC technique as follows: under laparoscopic guidance, a smooth tip instrument was used to gently separate the peritoneum from the posterior aponeurotic plane to create an extraperitoneal tunnel running from the skin incision to the left flank of the abdominal cavity to join the previously dissected paracolic gutter. The colon was exteriorized and the position was checked to ensure the absence of torsion or kinking. Results Twenty-two patients underwent a standard laparoscopic abdominoperineal resection with total mesorectal excision. Colostomy was constructed extraperitoneally (EPC) or transperitoneally (TPC) in 12 and 10 patients respectively. There were five complications requiring operative intervention: two stomal necrosis and one surgical site infection in the TPC group and two small bowel occlusions in the EPC group. Four patients from the TPC group developed PSH at 24, 36, 48 and 72months respectively while there were no cases of PSH in the EPC group. Conclusion Extraperitoneal laparoscopic colostomy showed a potential reduction of PSH in our series of patients. © 2012 The Authors. Colorectal Disease © 2012 The Association of Coloproctology of Great Britain and Ireland.

Lin H.-Y.,National Chung Cheng University | Chen L.-Q.,National Chung Cheng University | Wang M.-L.,Asian Institute of TeleSurgery
Proceedings of the International Symposium on Consumer Electronics, ISCE | Year: 2013

This paper presents an image processing technique for assisting hypochromatopsia people to view the natural scenes. We propose an image enhancement approach based on the color space calculation and linear transform to adjust the color presentation, which is also called color reprint. The method can help hypochromatopsia people being able to distinguish the difference between the colors they usually confuse. The experimental results show that the proposed image enhancement technique is useful for hypochromatopsia people to recognize, separate the colors in natural scenes. © 2013 IEEE.

Discover hidden collaborations