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CPI-C:Cool Planet Imaging Coronagraph on Chinese Space Station Survey Telescope 认领 引用
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作者 Jiang-Pei Dou Xi Zhang +23 位作者 Gang Zhao Ming-Ming Xu Zhen Wu Gang Wang Bao-Ning Yuan Ling-Yi Kong Yi-Ming Zhu Bingli Niu Zhong-Hua Lv Yong-Jun Qi Shu Jiang Bo Chen Wei Guo Di Wang Ying-Lu Lin Li-Ping Zheng Jing Guo Ruo-Kun Li Li-Yan Xu Hui-Hai Wu Cheng Wen Shu-Wei Miao Bo-Yang Lv Wei-Miao Li 《Research in Astronomy and Astrophysics》 SCIE CAS CSCD 2026年第5期275-301,共27页
Cool Planet Imaging Coronagraph(CPI-C)on Chinese Space Station Survey Telescope is proposed to direct image the cool planets around nearby solar-type stars(within 40 pc).The core scientific objective of CPI-C is to co... Cool Planet Imaging Coronagraph(CPI-C)on Chinese Space Station Survey Telescope is proposed to direct image the cool planets around nearby solar-type stars(within 40 pc).The core scientific objective of CPI-C is to conduct high-contrast directly imaging surveys of exoplanets ranging in size from Neptune-like to Jupiter-like,located at separations of 0.5–5 au from their host stars,and to perform systematic spectroscopic analysis of the detected planets through high-precision multi-band photometry.CPI-C employs a step-transmission apodization technique to suppress the diffraction noises from the telescope pupil and a precise phase correction technique to eliminate the speckle noises due to imperfections of the optical surfaces.The contrast requirement is better than 10−8 at an inner working angle of 3–4λ/D,in the visible wavelength from 600 to 900 nm.CPI-C will be the first space-based instrument capable of directly imaging the reflection light from the cool exoplanets in the visible wavelength enabling the measurement of key physical parameters such as the effective temperature,surface gravity,radius,mass,and other key parameters.The potential observation results will significantly contribute to further understand the formation and evolution mechanisms of planets,which will also lay a solid foundation for future confirmation of the Earth-twins in the next generation space flagship missions. 展开更多
关键词 space vehicles instruments-instrumentation adaptive optics-techniques high angular resolution-planets and satellites general-planets and satellites detection-planets and satellites atmospheres-planets and satellites gaseous planets-techniques image processing
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Effect of Intravascular Ultrasound-assisted Thoracic Endovascular Aortic Repair for "Complicated" Type B Aortic Dissection 认领 引用 被引量：2
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作者 Bao-Lei Guo Zhen-Yu Shi +4 位作者 Da-Qiao Guo Li-Xin Wang Xiao Tang Wei-Miao Li Wei-Guo Fu 《Chinese Medical Journal》 SCIE CAS CSCD 2015年第17期2322-2329,共8页
Background： Intravascular ultrasound （IVUS） examination can provide useful information during endovascular stent graft repair. However, its actual clinical utility in thoracic endovascular aortic repair （TEVAR） f... Background： Intravascular ultrasound （IVUS） examination can provide useful information during endovascular stent graft repair. However, its actual clinical utility in thoracic endovascular aortic repair （TEVAR） for type B aortic dissection （type B-AD） remains unclear, especially in complicated aortic dissection. We evaluated the effect of IVUS as a complementary tool during TEVAR. Methods： From September 2011 to April 2012, we conducted a prospective cohort study of 47 consecutive patients with ＂complicated＂ type B-AD diagnosed. We divided the patients into two groups： 1VUS-assisted TEVAR group and TEVAR using angiography alone group. The general procedure of TEVAR was performed. We evaluated the per±operative and follow-up events. Patient demographics, comorbidities, preoperative images, dissection morphology, details of operative strategy, intraoperative events, and postoperative course were recorded. Results： A total of 47 patients receiving TEVAR were enrolled. Among them （females, 8.51%; mean age, 57.38 i 13.02 years）, 13 cases （27.66%） were selected in the IVUS-assisted TEVAR group, and 34 were selected in the TEVAR group. All patients were symptomatic. The average diameter values of IVUS measurements in the landing zone were greater than those estimated by computed tomography angiography （31.82 ± 4.21 mm vs. 30.64 ± 4.13 ram, P 〈 0.001）. The technique success rate was 100%. Among the postoperative outcomes, statistical differences were only observed between the IVUS-assisted TEVAR group and TEVAR group for total operative time and the amount of contrast used （P = 0.013 and P 〈 0.001, respectively）. The follow-up ranged from 15 to 36 months for the IVUS-assisted TEVAR group and from 10 to 35 months for the TEVAR group （P = 0.646）. The primary endpoints were no statistical difference in the two groups. Conclusions： Intraoperative IVUS-assisted TEVAR is clinically feasible and safe. For the endovascular repair of ＂complicated＂ type B-AD, IVUS may be helpful for understanding dissection morphology arid decrease the operative time and the amount of contrast used. 展开更多
关键词 Aortic Dissection Endovascular Intravascular Ultrasound Stent Repair
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