ONLINE SYSTEM FOR MOBILE DEVICES TO SIMULATE THE OFFICE SYNDROME Narong Chaiwut1*, Parichat Faramee2 1

School of Information Technology, Mae Fah Luang University, Chiang Rai, Thailand School of Public Health, Mae Fah Luang University, Chiang Rai, Thailand *e-mail : [email protected] _____________________________________________________________________ 2

Abstract In the era of digital technology, human spends more time on computer machine with longer period and impropriate gesture. These cause the office syndrome, which has become the significant problems in our society: working efficiency, health problems and public health financial. According to the information of outpatient diseases of National Statistical Office of Thailand (2014), the muscular and skeleton system is the top 3 diseases that mostly found in Thailand. This paper purposes the online framework to simulate and basically diagnosis the symptom of office syndrome. The author classifies the cause of office syndrome into 2 categories: skeleton and muscular system. The patient or physical therapy can directly access the system with their mobile devices. In addition, the system can demonstrate the incorrect function of the muscle or skeleton. Our result reveals that this scheme works well both education and prevention. _____________________________________________________________________ Keywords:office syndrome, mobile system, computer simulation Introduction : Humanity is the force that drives the economy. However, in the decade of information technology, the efficiency of a human for working doesn't reach the top level which causes by the mind and physical. According to the (National Statistical Office of Thailand, 2014) reveals the statistic of outpatient diagnosis, the top three of sickness are a respiratory system, a vascular system, and a muscular system respectively. Therefore, the muscular system in office workers has often found in Thais and cosmopolitan. However, the muscular system that mostly found in office workers is referred to office syndrome symptom (Janwantanakul, P., et.al , 2012). The office syndrome cause of tired and painful, which need a continued treatment. According to (Thai Association for the Study of Pain, 2010) categorizes the muscular discomfort into 5 types, 1) Myofascial Pain Syndrome (MPS), 2) Fibromyalgia, 3) Chronic Fatique Syndrome, 4) Polymyalgia Rheumatic (PMR) and 5) Muscle Weakness. In this research, we focus on the Myofascial Pain Syndrome (MPS), particularly with the spine. According to ( Shi, S., et al, 2012)( Aranha, M., 2007)( Aranha, M., 2005) emerges the technology of mobile in medical diagnosis. In addition, (Mobean, M. M., 2012) renders the medical volume in real-time. CT and MRI display in 3D system were applied by (Patel, A., 2012) on handheld devices. The displaying of CT or MRI is not intuitive for patients. These kinds of displaying of patient data are troublesome to understand. Moreover, the transform data from CT or

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MRI to 3D images is costly. The patients have to diagnosis with the CT or MRI scanner first. This research would like to satisfy the gap : the intuitive displaying of the spine and reduce the operation cost. The online mobile device simulation can simultaneously display the spine in 3D system. The patient or physical therapy can navigate (rotate, translate) on the system. We had evaluated the satisfaction and recognition of our system with X-Ray system. Methodology : To develop the system, the procedure had been set up follow with the steps. First, because the expertise of us is not based on the medical, we investigated on the medical data such as X-Ray films. Second, the characteristic of spin component had been researched. Third, we have to create the 3D model of spin and lastly, the online system has proposed. 1) X-Ray Films Case Study In this research, the characteristic of Spine was studied, the films were approved and suggested by the Mae FahLuang University Hospital. Due to the implemented of A picture archiving and communication system (PACS), the X-Ray films have stored in digital format. Figure 1 illustrates the X-Ray films on PACS system.

Figure 1 Left and right images show the X-Ray film of the spine with a different view. According to our research and interview, the size of spine components is distinct. Due to the physical factors such as fitness, genre, age, etc. 2) Characteristic of spine components Spine compost of 7 elements: vertebrae, intervertebral disc, vertebral arch and spinal canal, facet joints, ligaments, spinal cord and spinal nerves. However, our online system developed on major elements, which are vertebrae, intervertebral disc and vertebral arch and spinal canal. 3) Modeling (Ding-Yun Chen, et al., 2003) created the 3D model database for researching. We brought a spine model from their online repository which improved the precise spine components : vertebrae, intervertebral disc. We modified the smoothness of the surface by using 3D software and export with the obj file format.

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Figure 2A The original spine model

Figure 2BThe adjustment of spine model which is well-defined than the original.

4) Online simulation system For the online simulation system, we used NodeJS as a backend service. The bootstrap was used for the interface. To simulate the spine on mobile devices, we applied the WebGL library, titled Three.js which develop based on JavaScript language to load and display the spine model.

Figure 3The Online simulation of spine with navigation (rotation, translation). Results : From the proposed method, the online system can simulate the spine to illustrate the symptom of office syndrome in real-time. Because the system is based on a World Wide Web (WWW) technology, we had tested the system on several devices, PC, mobile phones and tablets. Over system works great without a critical issue. We

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examined with the physical therapy to function and the cause of the office syndrome that show in figure 4.

Figure4A physical therapy operates our application. Discussion and Conclusion : Our system can display the spine in real-time on a mobile device. A patient or a physical therapy has better understand the cause of office syndrome more clearly. Occasionally, we found the blank screen of our system, which causes by a narrow bandwidth. Moreover, the volume of the spine is 7 MB that requires 3-5 minutes to download. The increased bandwidth is the solution. This research proposed the methodology for a patient to better recognize the cause of office syndrome by using only simulation system on mobile devices. From the result, the pleasure and perception of the spine of the patient were evaluated by questionnaire. More than 82.5% of our attendances were satisfied our representation of 3D data against with X-Ray images. There are a few limitations of our approach. First, It lacks automatically detection and transform of a spine from x-ray images. Second, the features to simulate a spine, which cannot archive some functions: vertebrae bending, intervertebral disc decay. In the future, more features will explain to the system. Acknowledgements : This project is granted and supported by Mae FahLuang University. We appreciated to Mae FahLuang University Hospital for providing us the X-Ray films and data. References : 1. National Statistical Office of Thailand. (2014). จำนวนผู้ป่วยนอก จำแนกตำมกลุ่ม

สำเหตุกำรป่ วย21 โรค จำกสถำนบริกำรสำธำรณสุข พ.ศ.2546- 2555. ค้นเมื่อ16 กรกฏาคม 2557, From http://service.nso.go.th/nso/web/statseries/statseries09.html 2. Janwantanakul, P., Sitthipornvorakul, E., Paksaichol, A. (2012). Risk Factors for the Onset of Nonspecific Low Back Pain in Office Workers: A Systematic Review of Prospective Cohort Studies, In Journal of Manipulative and Physiological Therapeutics. Vol.35(7):568-577

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3.Thai Association for the Study of Pain. (2010). แนวทางเวชปฏิบตั ิกลุ่มอาการปวดเรื้ อรัง

บนกระดูกและกล้ามเนื้อ. บริ ษทั อัมริ นทร์พริ้ นติ้งแอนด์พบั ลิชชิ่ง จากัด(มหาชน).ประเทศไทย 4. Shi, S., Nahrstedt, K., Campbell, R.(2012). A Real-Time Remote Rendering System for Interactive Mobile Graphics, In ACM Transactions on Multimedia Computing, Communications and Applications,Vol.8, No.3s 5. Aranha, M., Dubla, P., Debattista, K. (2007). A Physically-Based ClientServer Rendering Solution For Mobile Devices, In The International Conference on Mobile and Ubiquitous Multimedia. 6.Lluch, J., Gaitan, R., Camhort, E., Vivo, R. (2005). Interactive ThreeDimensional Rendering on Mobile Computer Devices, In The Association of Canadian Ergonomists. 7. Mobean, M. M. (2012). Ubiquitous Medical Volume Rendering on Mobile Devices, In International Conference on Information Society. 8. Patel, A., Mehta, K. (2012). 3D Modeling and Rendering of 2D Medical Image, In International Conference on Communication Systems and Network Technologies. Gujarat 9. Ding-Yun Chen, Xiao-Pei Tian, Yu-TeShen and Ming Ouhyoung, (2003). On Visual Similarity Based 3D Model Retrieval", Computer Graphics Forum (EUROGRAPHICS'03), Vol. 22, No. 3 : 223-232

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