Acute coronary syndrome(ACS),diagnosed by optical coherence tomography(OCT),is caused primarily by plaque rupture,plaque erosion,and calcified nodules.Plaque erosion is more common in patients with non-ST-segment elev...Acute coronary syndrome(ACS),diagnosed by optical coherence tomography(OCT),is caused primarily by plaque rupture,plaque erosion,and calcified nodules.Plaque erosion is more common in patients with non-ST-segment eleva-tion myocardial infarction than ST-segment elevation myocardial infarction.This study reports the details of a case of ACS caused by massive thrombus formation due to plaque erosion.The factors associated with plaque erosion and thrombosis could not be confirmed on the basis of clinical examination findings and the physicians’experience;there-fore,the initial diagnosis of an ischemic event was replaced by a diagnosis of rapid plaque progression,as microscopi-cally confirmed by OCT.Therefore,OCT examination must be performed for blurred or“rapidly progressing”lesions identified through angiography.展开更多
Most important interventional application of IVUS is plaque assessment, vessel sizing and stent implantation guidance. Image guided PCI </span></span><span style="white-space:normal;">...Most important interventional application of IVUS is plaque assessment, vessel sizing and stent implantation guidance. Image guided PCI </span></span><span style="white-space:normal;"><span style="font-family:"">is </span></span><span style="white-space:normal;"><span style="font-family:"">associated with decreased incidence of stent thrombosis and MACE rate as evident in recently published meta-analysis of IVUS guided PCI studies. Many imaging studies have shown very clearly under-expansion, edge-dissection, tissue-prolapse, mal apposition, and geographical miss are associated with adverse events following DES implantation, and IVI guides in optimization of stent implantation by identifying and rectifying these predictors of DES outcomes.展开更多
To meet the exponentially growing demand fbr bandwidth in Optical Transport Networks （OTNs）, 100-Gb/s （100G） coherent technology based oil Polarization-Division Multiplexed Quadrature Phase Shift Keying （PDM-QPSK...To meet the exponentially growing demand fbr bandwidth in Optical Transport Networks （OTNs）, 100-Gb/s （100G） coherent technology based oil Polarization-Division Multiplexed Quadrature Phase Shift Keying （PDM-QPSK）, which enables the capacity of a Wavelength Division Multiplexing （WDM） system to approach 10 Tb/s, is being widely deployed globally. As the first vendor to intro- duce a single-carrier 100G solution, A1- catel-Lucent has developed key transponder and network management technologies, which are reviewed in this paper together with their commercial evolution to 400G. Focusing on the Chinese market, we also review some key bench-mark testing results obtained in partner- ship with major Chinese operators. Finally, we discuss enabling technologies that are currently being researched to allow interfaces to scale to Terabit/s rates.展开更多
Simulated Annealing (SA) is used in this work as a global optimization technique applied in discrete search spaces in order to change the characterization of pixels in a Polarimetric Synthetic Aperture Radar (PolSAR) ...Simulated Annealing (SA) is used in this work as a global optimization technique applied in discrete search spaces in order to change the characterization of pixels in a Polarimetric Synthetic Aperture Radar (PolSAR) image which have been classified with different label than the surrounding land cover type. Accordingly, Land Cover type classification is achieved with high reliability. For this purpose, an energy function is employed which is minimized by means of SA when the false classified pixels are correctly labeled. All PolSAR pixels are initially classified using 9 specifically selected types of land cover by means of Google Earth maps. Each Land Cover Type is represented by a histogram of the 8 Cameron’s elemental scatterers by means of coherent target decomposition (CTD). Each PolSAR pixel is categorized according to the local histogram of the elemental scatterers. SA is applied in the discreet space of nine land cover types. Classification results prove that the Simulated Annealing approach used is very successful for correctly separating regions with different Land Cover Types.展开更多
基金supported by the Langfang City Science and Technology Support Program Project(grant number:2020013106)Hebei Province Key R&D Program Self-funded Project(grant number:182777166).
文摘Acute coronary syndrome(ACS),diagnosed by optical coherence tomography(OCT),is caused primarily by plaque rupture,plaque erosion,and calcified nodules.Plaque erosion is more common in patients with non-ST-segment eleva-tion myocardial infarction than ST-segment elevation myocardial infarction.This study reports the details of a case of ACS caused by massive thrombus formation due to plaque erosion.The factors associated with plaque erosion and thrombosis could not be confirmed on the basis of clinical examination findings and the physicians’experience;there-fore,the initial diagnosis of an ischemic event was replaced by a diagnosis of rapid plaque progression,as microscopi-cally confirmed by OCT.Therefore,OCT examination must be performed for blurred or“rapidly progressing”lesions identified through angiography.
文摘Most important interventional application of IVUS is plaque assessment, vessel sizing and stent implantation guidance. Image guided PCI </span></span><span style="white-space:normal;"><span style="font-family:"">is </span></span><span style="white-space:normal;"><span style="font-family:"">associated with decreased incidence of stent thrombosis and MACE rate as evident in recently published meta-analysis of IVUS guided PCI studies. Many imaging studies have shown very clearly under-expansion, edge-dissection, tissue-prolapse, mal apposition, and geographical miss are associated with adverse events following DES implantation, and IVI guides in optimization of stent implantation by identifying and rectifying these predictors of DES outcomes.
文摘To meet the exponentially growing demand fbr bandwidth in Optical Transport Networks （OTNs）, 100-Gb/s （100G） coherent technology based oil Polarization-Division Multiplexed Quadrature Phase Shift Keying （PDM-QPSK）, which enables the capacity of a Wavelength Division Multiplexing （WDM） system to approach 10 Tb/s, is being widely deployed globally. As the first vendor to intro- duce a single-carrier 100G solution, A1- catel-Lucent has developed key transponder and network management technologies, which are reviewed in this paper together with their commercial evolution to 400G. Focusing on the Chinese market, we also review some key bench-mark testing results obtained in partner- ship with major Chinese operators. Finally, we discuss enabling technologies that are currently being researched to allow interfaces to scale to Terabit/s rates.
文摘Simulated Annealing (SA) is used in this work as a global optimization technique applied in discrete search spaces in order to change the characterization of pixels in a Polarimetric Synthetic Aperture Radar (PolSAR) image which have been classified with different label than the surrounding land cover type. Accordingly, Land Cover type classification is achieved with high reliability. For this purpose, an energy function is employed which is minimized by means of SA when the false classified pixels are correctly labeled. All PolSAR pixels are initially classified using 9 specifically selected types of land cover by means of Google Earth maps. Each Land Cover Type is represented by a histogram of the 8 Cameron’s elemental scatterers by means of coherent target decomposition (CTD). Each PolSAR pixel is categorized according to the local histogram of the elemental scatterers. SA is applied in the discreet space of nine land cover types. Classification results prove that the Simulated Annealing approach used is very successful for correctly separating regions with different Land Cover Types.
