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User-Friendly Interactive Chinese Character Education System and Its Effect
Yusuke Shimizu,Jungpil Shin ASCONS 2017 INTERNATIONAL JOURNAL OF EMERGING MULTIDISCIPLINAR Vol.1 No.1
This paper presents a novel friendly and interactive Chinese character (Kanji in Japanese) learning system to enable elementary school students and foreign people living in Japan and to learn Kanji by an interesting and efficient way. By interacting with the network between the client application for students and the server application for teachers, teachers can grasp circumstances of education of all students in real-time. When students select and input characters they want to learn, the client application checks whether each stroke is unbalanced or not, and it is corrected if unbalanced. If there are no unbalanced strokes, a “Hanamaru” is displayed. On the other hand, the server application has two kinds of display modes, to display circumstances of all students and to display detail circumstances of each student, and teachers can switch them anytime. At the same time, the server takes statistics of points where each student is easy to make mistakes and saves them. So teachers can grasp circumstances and trend of all students. Moreover, pen speed and segment division are introduced in order to extract and correct local features, such as “tome”, “hane”, and “harai”, which were a weak point of previous system in spite of the important point in Kanji education. Segment division is a method that refraction points of each stroke are extracted and each stroke is subdivided by these points and is used to correct “hane” and to distinguish between “ore” and “mage”. For both of them, the correction of local features can be realized and the close correction is enabled. Finally, by using the system actually, this system is evaluated whether it is useful to be able to write and memorize Kanji correctly and the interface is really friendly for learners. As a result, since many students feel interesting and useful to learn Kanji, it is clear that this system is useful for Kanji education. And the interface is also a high appraisal.
Yushi Suzuki,Yusuke Shimizu,Shogo Kasai,Shun Yamazaki,Masashi Takemaru,Takuya Kitamura,Saori Kawakami,Takeshi Tamura 대한성형외과학회 2019 Archives of Plastic Surgery Vol.46 No.4
Background Pedicled flaps are useful for reconstructive surgery. Previously, we often used vascularized supraclavicular flaps, especially for head and neck reconstruction, but then shifted to using thoracic branch of the supraclavicular artery (TBSA) flaps. However, limited research exists on the anatomy of TBSA flaps and on the use of indocyanine green (ICG) fluorescence videoangiography for supraclavicular artery flaps. We utilized ICG fluorescence videoangiography to harvest reliable flaps in reconstructive operations, and describe the results herein. Methods Data were retrospectively reviewed from six patients (five men and one woman: average age, 54 years; range, 48–60 years) for whom ICG videoangiography was performed to observe the skin perfusion of a supraclavicular flap after it was raised. Areas where the flap showed good enhancement were considered to be favorable for flap survival. The observation of ICG dye indicated good skin perfusion, which is predictive of flap survival; therefore, we trimmed any areas without dye filling and used the remaining viable part of the flap. Results The flaps ranged in size from 13×5.5 cm to 17×6.5 cm. One patient received a conventional supraclavicular flap, four patients received a TBSA flap, and one patient received a flap that was considered to be intermediate between a supraclavicular flap and a TBSA flap. The flaps completely survived in all cases, and no flap necrosis was observed. Conclusions The TBSA flap is very useful in reconstructive surgery, and reliable flaps could be obtained by using ICG fluorescence videoangiography intraoperatively.
Management of Chronic Expanding Haematoma Using Triamcinolone after Latissimus Dorsi Flap Harvesting
Mariko Hamada,Yusuke Shimizu,Noriko Aramaki-Hattori,Tatsuya Kato,Keiko Takada,Marie Aoki,Kazuo Kishi,Tomohisa Nagasao 대한성형외과학회 2015 Archives of Plastic Surgery Vol.42 No.2
Chronic expanding haematoma (CEH) is a rare type of haematoma that enlarges slowly andcontinuously without coagulation. It can occur following surgery because of shear stressinducedbleeding in the scar tissue between the subcutaneous fat and fascia. We present threecases of large chronic CEH that were successfully treated with triamcinolone injections. Threefemale patients developed large chronic CEH at 9 months, 5 years, and 6 years, respectively,after latissimus dorsi flap harvesting for breast reconstruction. Although the condition did notimprove after multiple sessions of haematoma aspiration in the first two patients, it resolvedfollowing a single 40-mg triamcinolone injection along with appropriate compression dressingfor several weeks. In the third patient, triamcinolone was injected immediately after the initialaspiration of the haematoma, and the condition improved considerably. There were no sideeffects in any of the patients. To the best of our knowledge, this is the first report of successfultreatment of large CEH using triamcinolone. Therefore, we suggest that triamcinolone injectionsbe considered for the treatment of CEH.
Suzuki, Yushi,Shimizu, Yusuke,Kasai, Shogo,Yamazaki, Shun,Takemaru, Masashi,Kitamura, Takuya,Kawakami, Saori,Tamura, Takeshi Korean Society of Plastic and Reconstructive Surge 2019 Archives of Plastic Surgery Vol.46 No.4
Background Pedicled flaps are useful for reconstructive surgery. Previously, we often used vascularized supraclavicular flaps, especially for head and neck reconstruction, but then shifted to using thoracic branch of the supraclavicular artery (TBSA) flaps. However, limited research exists on the anatomy of TBSA flaps and on the use of indocyanine green (ICG) fluorescence videoangiography for supraclavicular artery flaps. We utilized ICG fluorescence videoangiography to harvest reliable flaps in reconstructive operations, and describe the results herein. Methods Data were retrospectively reviewed from six patients (five men and one woman: average age, 54 years; range, 48-60 years) for whom ICG videoangiography was performed to observe the skin perfusion of a supraclavicular flap after it was raised. Areas where the flap showed good enhancement were considered to be favorable for flap survival. The observation of ICG dye indicated good skin perfusion, which is predictive of flap survival; therefore, we trimmed any areas without dye filling and used the remaining viable part of the flap. Results The flaps ranged in size from $13{\times}5.5cm$ to $17{\times}6.5cm$. One patient received a conventional supraclavicular flap, four patients received a TBSA flap, and one patient received a flap that was considered to be intermediate between a supraclavicular flap and a TBSA flap. The flaps completely survived in all cases, and no flap necrosis was observed. Conclusions The TBSA flap is very useful in reconstructive surgery, and reliable flaps could be obtained by using ICG fluorescence videoangiography intraoperatively.
Management of Chronic Expanding Haematoma Using Triamcinolone after Latissimus Dorsi Flap Harvesting
Hamada, Mariko,Shimizu, Yusuke,Aramaki-Hattori, Noriko,Kato, Tatsuya,Takada, Keiko,Aoki, Marie,Kishi, Kazuo,Nagasao, Tomohisa Korean Society of Plastic and Reconstructive Surge 2015 Archives of Plastic Surgery Vol.42 No.2
Chronic expanding haematoma (CEH) is a rare type of haematoma that enlarges slowly and continuously without coagulation. It can occur following surgery because of shear stress-induced bleeding in the scar tissue between the subcutaneous fat and fascia. We present three cases of large chronic CEH that were successfully treated with triamcinolone injections. Three female patients developed large chronic CEH at 9 months, 5 years, and 6 years, respectively, after latissimus dorsi flap harvesting for breast reconstruction. Although the condition did not improve after multiple sessions of haematoma aspiration in the first two patients, it resolved following a single 40-mg triamcinolone injection along with appropriate compression dressing for several weeks. In the third patient, triamcinolone was injected immediately after the initial aspiration of the haematoma, and the condition improved considerably. There were no side effects in any of the patients. To the best of our knowledge, this is the first report of successful treatment of large CEH using triamcinolone. Therefore, we suggest that triamcinolone injections be considered for the treatment of CEH.
Ishii, Naohiro,Ando, Jiro,Shimizu, Yusuke,Kishi, Kazuo Korean Society of Plastic and Reconstructive Surge 2018 Archives of Plastic Surgery Vol.45 No.5
Large and ptotic breast reconstruction in patients who are not candidates for a transverse rectus abdominalis myocutaneous flap and revision surgery for the contralateral breast remains challenging. We developed a novel breast reconstruction technique using a latissimus dorsi myocutaneous (LD m-c) flap set at the posterior aspect of the reconstructed breast, combined with an anatomical silicone breast implant (SBI), following tissue expander surgery. We performed the proposed technique in four patients, in whom the weight of the resected tissue during mastectomy was >500 g and the depth of the inframammary fold (IMF) was >3 cm. After over-expansion of the lower portion of the skin envelope by a tissue expander, the LD m-c flap was transferred to cover the lower portion of the breast defect and to achieve a ptotic contour, with the skin paddle set at the posterior aspect of the reconstructed breast. An SBI was then placed in the rest of the breast defect after setting the LD m-c flap. No major complications were observed during the follow-up period. The proposed technique resulted in symmetrical and aesthetically satisfactory breasts with deep IMFs, which allowed proper fitting of the brassiere, following large and ptotic breast reconstruction.