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4. Comparison of Outcomes and Complications Among Patients with Different Indications of Acute/Subacute Complicated Stanford Type B Aortic Dissection Treated by TEVAR: Data from the JaPanese REtrospective multicenter stuDy of ThoracIc Endovascular Aortic Repair for Complicated Type B Aortic Dissection (J-Predictive Study)

Author

Iwakoshi, Shinichi, Irie, Yoshihito, Katada, Yoshiaki, Sakaguchi, Shoji, Hongo, Norio, Oji, Katsuki, Fukuda, Tetsuya, Matsuda, Hitoshi, Kawasaki, Ryota, Taniguchi, Takanori, Motoki, Manabu, Hagihara, Makiyo, Kurimoto, Yoshihiko, Morikage, Noriyasu, Nishimaki, Hiroshi, Ogawa, Yukihisa, Sueyoshi, Eijun, Inoue, Kyozo, Shimizu, Hideyuki, Ideta, Ichiro, Higashigawa, Takatoshi, Ikeda, Osamu, Miyamoto, Naokazu, Nakai, Motoki, Nakai, Takahiro, Inoue, Takashi, Inoue, Takeshi, Ichihashi, Shigeo, and Kichikawa, Kimihiko

Published
2022
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11. 合併症を有するB型大動脈解離に対するステントグラフト内挿術における腎動脈に対する治療戦略 : 多施設共同研究

Author

Iwakoshi, Shinichi, Dake, Michael D, Irie, Yoshihito, Katada, Yoshiaki, Sakaguchi, Shoji, Hongo, Norio, Oji, Katsuki, Fukuda, Tetsuya, Matsuda, Hitoshi, Kawasaki, Ryota, Taniguchi, Takanori, Motoki, Manabu, Hagihara, Makiyo, Kurimoto, Yoshihiko, Morikage, Noriyasu, Nishimaki, Hiroshi, Sueyoshi, Eijun, Inoue, Kyozo, Shimizu, Hideyuki, Ideta, Ichiro, Higashigawa, Takatoshi, Ikeda, Osamu, Miyamoto, Naokazu, Nakai, Motoki, Nakai, Takahiro, Ichihashi, Shigeo, Inoue, Takeshi, Inoue, Takashi, Yamaguchi, Masato, Tanaka, Ryoichi, and Kichikawa, Kimihiko

Abstract

Background: Management of abdominal branches associated with Stanford type B aortic dissection is controversial without definite criteria for therapy after thoracic endovascular aortic repair (TEVAR). This is in part due to lack of data on natural history related to branch vessels and their relationship with the dissection flap, true lumen, and false lumen. Purpose: To investigate the natural history of abdominal branches after TEVAR for type B aortic dissection and the relationship between renal artery anatomy and renal volume as a surrogate measure of perfusion. Materials and Methods: This study included patients who underwent TEVAR for complicated type B dissection from January 2012 to March 2017 at 20 centers. Abdominal aortic branches were classified with following features: patency, branch vessel origin, and presence of extension of the aortic dissection into a branch (pattern 1, supplied by the true lumen without branch dissection; pattern 2, supplied by the true lumen with branch dissection, etc). The branch artery patterns before TEVAR were compared with those of the last follow-up CT (mean interval, 19.7 months) for spontaneous healing. Patients with one kidney supplied by pattern 1 and the other kidney by a different pattern were identified, and kidney volumes over the course were compared by using a simple linear regression model. Results: Two hundred nine patients (mean age ± standard deviation, 66 years ± 13; 165 men and 44 women; median follow-up, 18 months) were included. Four hundred fifty-nine abdominal branches at the last follow-up were evaluable. Spontaneous healing of the dissected branch occurred in 63% (64 of 102) of pattern 2 branches. Regarding the other patterns, 6.5% (six of 93) of branches achieved spontaneous healing. In 79 patients, renal volumes decreased in kidneys with pattern 2 branches with more than 50% stenosis and branches supplied by the aortic false lumen (patterns 3 and 4) compared with contralateral kidneys supplied by pattern 1 (pattern 2 vs pattern 1: −16% ± 16 vs 0.10% ± 11, P = .002; patterns 3 and 4 vs pattern 1: −13% ± 14 vs 8.5% ± 14, P = .004). Conclusion: Spontaneous healing occurs more frequently in dissected branches arising from the true lumen than in other branch patterns. Renal artery branches supplied by the aortic false lumen or a persistently dissected artery with greater than 50% stenosis are associated with significantly greater kidney volume loss., 博士（医学）・乙第1461号・令和2年6月30日, Copyright © 2019 by authors and RSNA. This work is licensed under the Creative Commons Attribution International License (CC BY-NC-ND 4.0). https://creativecommons.org/licenses/by-nc-nd/4.0/.

Published
2020

15. Management of Renal Arteries in Conjunction with Thoracic Endovascular Aortic Repair for Complicated Stanford Type B Aortic Dissection: The Japanese Multicenter Study (J-Predictive Study)

Author

Iwakoshi, Shinichi, primary, Dake, Michael D., additional, Irie, Yoshihito, additional, Katada, Yoshiaki, additional, Sakaguchi, Shoji, additional, Hongo, Norio, additional, Oji, Katsuki, additional, Fukuda, Tetsuya, additional, Matsuda, Hitoshi, additional, Kawasaki, Ryota, additional, Taniguchi, Takanori, additional, Motoki, Manabu, additional, Hagihara, Makiyo, additional, Kurimoto, Yoshihiko, additional, Morikage, Noriyasu, additional, Nishimaki, Hiroshi, additional, Sueyoshi, Eijun, additional, Inoue, Kyozo, additional, Shimizu, Hideyuki, additional, Ideta, Ichiro, additional, Higashigawa, Takatoshi, additional, Ikeda, Osamu, additional, Miyamoto, Naokazu, additional, Nakai, Motoki, additional, Nakai, Takahiro, additional, Ichihashi, Shigeo, additional, Inoue, Takeshi, additional, Inoue, Takashi, additional, Yamaguchi, Masato, additional, Tanaka, Ryoichi, additional, and Kichikawa, Kimihiko, additional

Published
2020
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16. Video buffer models of image division coding

Author

Kasezawa, Tadashi, Ito, Hiroshi, Hatano, Yoshiko, and Nakai, Takahiro

Subjects
Data compression -- Research, Image coding -- Research, Business, Electronics and electrical industries, Engineering and manufacturing industries
Abstract

The image division coding is one of the means of coding the image signals with high resolution such as HDTV. Generally the parallel processing scheme is applied to carry out the image division coding by dividing the image in several panels spatially and then employing the coding tools for each panel. However, it is necessary to distinguish the difference in coding performance between parallel and non-parallel processing schemes. This paper deals with the buffer size and buffer delay for coding due to parallel and non-parallel processing schemes. The following conclusion has been deduced through such study. For the same rate control conditions, the J division parallel processing needs the buffer size J times larger than the non-parallel processing, with the buffer delay being the same in both cases.

Published
1996

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