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Direct measurement of nonlocal quantum states without approximation
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作者 杨冈 杨然 +1 位作者 龚彦晓 祝世宁 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第11期252-256,共5页
Efficient acquiring information from a quantum state is important for research in fundamental quantum physics and quantum information applications. Instead of using standard quantum state tomography method with recons... Efficient acquiring information from a quantum state is important for research in fundamental quantum physics and quantum information applications. Instead of using standard quantum state tomography method with reconstruction algorithm, weak values were proposed to directly measure density matrix elements of quantum state. Recently, similar to the concept of weak value, modular values were introduced to extend the direct measurement scheme to nonlocal quantum wavefunction. However, this method still involves approximations, which leads to inherent low precision. Here, we propose a new scheme which enables direct measurement for ideal value of the nonlocal density matrix element without taking approximations. Our scheme allows more accurate characterization of nonlocal quantum states, and therefore has greater advantages in practical measurement scenarios. 展开更多
关键词 direct measurement quantum tomography nonlocal quantum state
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Approximate and Conditional Teleportation of an Unknown Atomic State Without Bell-State Measurement with Two-Photon Interaction 被引量:2
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作者 CHEN Chang-Yong 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第1期79-82,共4页
A scheme for approximately and conditionally teleporting an unknown atomic state via two-photon interaction in cavity QED is proposed. It is the extension of the scheme of Ref. [11] [Phys. Rev. A 69 (2004) 064302], ... A scheme for approximately and conditionally teleporting an unknown atomic state via two-photon interaction in cavity QED is proposed. It is the extension of the scheme of Ref. [11] [Phys. Rev. A 69 (2004) 064302], which is based on Jaynes-Cummings model in QED and where only a time point of system evolution and the corresponding fidelity implementing the teleportation are given. In our scheme, the two-photon interaction Jaynes-Cummings model is used to realize the approximate and conditional teleportation. Our scheme does not involve the Bell-state measurement and an additional atom, only requiring two atoms and one single-mode cavity. The fidelity of the scheme is higher than that of Ref. [11]. The scheme may be generalized to not only the teleportation of the state of a cavity mode to another mode by means of a single atom but also the teleportation of the state of a trapped ion. 展开更多
关键词 TELEPORTATION bell-state measurement cavity QED two-photon interaction
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Comment on “Approximate and Conditional Teleportation of an Unknown Atomic State Without Bell-State Measurement with Two-Photon Interaction” 被引量:1
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作者 A.D.dSouza W.B.Cardoso +1 位作者 A.T.Avelar B.Baseia 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第7期41-44,共4页
In a previous work [Commun. Theor. Phys. 45 (2006) 79] a scheme was presented for approximate and conditional teleportation of an unknown atomic state in a QED-cavity without Bell-state measurement via two-photon Ja... In a previous work [Commun. Theor. Phys. 45 (2006) 79] a scheme was presented for approximate and conditional teleportation of an unknown atomic state in a QED-cavity without Bell-state measurement via two-photon Jaynes-Cummings model in the effective Hamiltonian approach. This comment presents an alternative method, based on the so called "full two-photon Jaynes-Cummings Hamiltonian approach". Accordingly, it describes the evolution of the two-photon degenerate process for arbitrary average photon number inside the cavity, as the correct way to implement teleportation in this scenario. 展开更多
关键词 TELEPORTATION bell-state measurement cavity QED two-photon interaction
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Teleportation of N-qubit W State without Bell-State Measurement via Selective Resonant Interaction in Cavity QED 被引量:1
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作者 钟文学 耿珺 +1 位作者 程广玲 陈爱喜 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第8期253-256,共4页
We present a scheme in which the N-atom W state is teleported by employing the selective interactionof a cavity field with a driven three-level atom in the A configuration and detecting a single atom in one of the gro... We present a scheme in which the N-atom W state is teleported by employing the selective interactionof a cavity field with a driven three-level atom in the A configuration and detecting a single atom in one of the groundstates.The long-lived W state is teleported from atom A to atom B when the atoms B and A are sent through acavity successively and atom A is then detected.The advantage is that the present one does not involve the Bell-statemeasurement and is robust against the atomic spontaneous emission. 展开更多
关键词 TELEPORTATION W state bell-state measurement selective resonant interaction
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Teleportation of an Unknown Atomic Entangled State Without Any Joint Bell-state Measurement via a Cluster State 被引量:1
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作者 CAO Zhuo-Liang LI Da-Chuang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第2期369-372,共4页
An experimentally feasible scheme for teleportation of an unknown two-atom entangled state is proposed. Our scheme uses a duster state as the quantum channel, where we do not need any joint Bell-state measurement. Mor... An experimentally feasible scheme for teleportation of an unknown two-atom entangled state is proposed. Our scheme uses a duster state as the quantum channel, where we do not need any joint Bell-state measurement. Moreover the successful probability and fidelity of teleportation can both reach 1.0. The current scheme can be realized within the current experimental technology. 展开更多
关键词 quantum teleportation joint bell-state measurement cavity QED quantum controlled phase gate
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Remote atomic information concentration without Bell-state measurement
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作者 吴珍珍 方卯发 《Chinese Physics B》 SCIE EI CAS CSCD 2006年第8期1700-1704,共5页
This paper proposes a scheme for information concentration of two remote two-level atoms in cavity QED. This scheme does not involve the Bell-state measurement. During the interaction between atom and cavity, the cavi... This paper proposes a scheme for information concentration of two remote two-level atoms in cavity QED. This scheme does not involve the Bell-state measurement. During the interaction between atom and cavity, the cavity frequency is large-detuned from the atomic transition frequency, thus the scheme is insensitive to both the cavity decay and the thermal field. This idea can directly be generalized in the case of multi-atom information concentration. 展开更多
关键词 CONCENTRATION GHZ state bell-state measurement
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Faithful Teleportation of an Unknown Atomic-Entangled State Without Bell-State Measurement
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作者 LIN Xiu LI Hong-Cai YANG Rong-Can HUANG Zhi-Ping 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第3期621-624,共4页
An alternative scheme is proposed for teleportation of an unknown atomic-entangled state. The scheme is based on the resonant interaction of a two-mode cavity field with a A-type three-level atom. In contrast with the... An alternative scheme is proposed for teleportation of an unknown atomic-entangled state. The scheme is based on the resonant interaction of a two-mode cavity field with a A-type three-level atom. In contrast with the previously proposed scheme of [Commun. Theor. Phys. 47 (2007) 253], the present scheme is ascendant, since the fidelity is 1.0 in principle similarly without the Bell-state measurement. The scheme may be generalized to not only the teleportation of the cavity-mode-entangled-state but also the teleportation of the multi-atomic entangled states included in generalized GHZ states. And the scheme is experimentally feasible based on the current cavity QED technique. 展开更多
关键词 TELEPORTATION A-type atom two-mode cavity field bell-state measurement
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Approximate and Conditional Teleportation of an Unknown Atomic-Entangled State Without Bell-State Measurement
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作者 CHEN Chang-Yong LI Shao-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2007年第2期253-256,共4页
A scheme for approximately and conditionally teleporting an unknown atomic-entangled state in cavity QED is proposed. It is the novel extension of the scheme of [Phys. Rev. A 69 (200,I) 06,1302], where the state to ... A scheme for approximately and conditionally teleporting an unknown atomic-entangled state in cavity QED is proposed. It is the novel extension of the scheme of [Phys. Rev. A 69 (200,I) 06,1302], where the state to be teleported is an unknown atomic state and where only a time point of system evolution and the corresponding: fidelity implementing the telèportation are given. In fact, there exists multi-time points and the corresponding fidelities, which are Shown in this paper and then are used to realize the approximate and conditional teleportation of the unknown atomic-entangled state. Naturally, our scheme does not involve the Bell-state measurement or an additional atom, which is required in the Bell-state measurement, only requiring one single-mode cavity. The scheme may be generalized to not only the teleportation of the cavity-mode-entangled-state by means of a single atom but also the teleportation of the unknown trapped-ion-entangled-state in a linear ion trap and the teleportation of the multi-atomic entangled states included in generalized GHZ states. 展开更多
关键词 TELEPORTATION bell-state measurement cavity QED Rydberg state
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Implementation of nonlocal Bell-state measurement and quantum information transfer with weak Kerr nonlinearity
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作者 白娟 郭奇 +4 位作者 程留永 邵晓强 王洪福 张寿 Yeon Kyu-Hwang 《Chinese Physics B》 SCIE EI CAS CSCD 2011年第12期72-78,共7页
We propose a protocol to implement the nonlocal Bell-state measurement, which is nearly determinate with the help of weak cross-Kerr nonlinearities and quantum non-destructive photon number resolving detection. Based ... We propose a protocol to implement the nonlocal Bell-state measurement, which is nearly determinate with the help of weak cross-Kerr nonlinearities and quantum non-destructive photon number resolving detection. Based on the nonlocal Bell-state measurement, we implement the quantum information transfer from one place to another. The process is different from conventional teleportation but can be regarded as a novel form of teleportation without entangled channel and classic communication. 展开更多
关键词 weak cross-Kerr nonlinearities nonlocal bell-state measurement quantum informationtransfer
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Three-Party Quantum State Sharing of an Arbitrary Unknown Two-Qubit State Based on Entanglement Swapping and Bell-State Measurements
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作者 YUAN Hao SONG Jun +3 位作者 HOU Kui HU Xiao-Yuan HAN Lian-Fang SHI Shou-Hua 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第7期50-54,共5页
We propose a scheme for sharing an arbitrary unknown two-qubit state among three parties by using afour-qubit cluster-class state and a Bell state as a quantum channel With a quantum controlled phase gate (QCPG)operat... We propose a scheme for sharing an arbitrary unknown two-qubit state among three parties by using afour-qubit cluster-class state and a Bell state as a quantum channel With a quantum controlled phase gate (QCPG)operation and a local unitary operation,any one of the two agents has the access to reconstruct the original state ifhe/she collaborates with the other one,whilst individual agent obtains no information.As all quantum resource canbe used to carry the useful information,the intrinsic efficiency of qubits approaches the maximal value.Moreover,thepresent scheme is more feasible with present-day technique. 展开更多
关键词 quantum state sharing entanglement swapping bell-state measurements QCPG operation local unitary operation
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Study on Measurement Methods of Multi-Directional Waves—Wave Gauge Array Method 被引量:5
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作者 Yu Yuxiu Liu Shuxue Prof. Department of Civil Engineering, Dalian University of Technology, Dalian Assistant Researcher, Department of Civil Engineering, Dalian University of Technology, Dalian 《China Ocean Engineering》 SCIE EI 1992年第2期233-242,共10页
Measuring multi-directional waves with the wave gauge array is one of the fundamental and easily realised methods. In this paper, the wave gauge array is described and the effects of the gauge spacing, the array orien... Measuring multi-directional waves with the wave gauge array is one of the fundamental and easily realised methods. In this paper, the wave gauge array is described and the effects of the gauge spacing, the array orientations, etc. of the three array arrangements, i. e., linear array, T-type array and pentagon array, on the resolution of the directional spreading of waves, are investigated experimentally. This study can be used as a reference in the experimental study and the field measurement of directional waves. 展开更多
关键词 multi-directional waves measurement method directional spectrum wave gauge array
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Quantitative measurement of hydroxyl radical(OH) concentration in premixed flat flame by combining laser-induced fluorescence and direct absorption spectroscopy 被引量:3
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作者 陈爽 苏铁 +3 位作者 李中山 白菡尘 闫博 杨富荣 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第10期89-95,共7页
An accurate and reasonable technique combining direct absorption spectroscopy and laser-induced fluorescence(LIF)methods is developed to quantitatively measure the concentrations of hydroxyl in CH;/air flat laminar ... An accurate and reasonable technique combining direct absorption spectroscopy and laser-induced fluorescence(LIF)methods is developed to quantitatively measure the concentrations of hydroxyl in CH;/air flat laminar flame. In our approach, particular attention is paid to the linear laser-induced fluorescence and absorption processes, and experimental details as well. Through measuring the temperature, LIF signal distribution and integrated absorption, spatially absolute OH concentrations profiles are successfully resolved. These experimental results are then compared with the numerical simulation. It is proved that the good quality of the results implies that this method is suitable for calibrating the OH-PLIF measurement in a practical combustor. 展开更多
关键词 laser-induced fluorescence(LIF) direct absorption spectroscopy hydroxyl radical(OH) quantitative measurement
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Measurement-device-independent one-step quantum secure direct communication 被引量:3
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作者 Jia-Wei Ying Lan Zhou +1 位作者 Wei Zhong Yu-Bo Sheng 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第12期57-65,共9页
The one-step quantum secure direct communication(QSDC)(Sci.Bull.67,367(2022))can effectively simplify QSDC’s operation and reduce message loss.For enhancing its security under practical experimental condition,we prop... The one-step quantum secure direct communication(QSDC)(Sci.Bull.67,367(2022))can effectively simplify QSDC’s operation and reduce message loss.For enhancing its security under practical experimental condition,we propose two measurement-device-independent(MDI)one-step QSDC protocols,which can resist all possible attacks from imperfect measurement devices.In both protocols,the communication parties prepare identical polarization-spatial-mode two-photon hyperentangled states and construct the hyperentanglement channel by hyperentanglement swapping.The first MDI one-step QSDC protocol adopts the nonlinear-optical complete hyperentanglement Bell state measurement(HBSM)to construct the hyperentanglement channel,while the second protocol adopts the linear-optical partial HBSM.Then,the parties encode the photons in the polarization degree of freedom and send them to the third party for the hyperentanglementassisted complete polarization Bell state measurement.Both protocols are unconditionally secure in theory.The simulation results show the MDI one-step QSDC protocol with complete HBSM attains the maximal communication distance of about354 km.Our MDI one-step QSDC protocols may have potential applications in the future quantum secure communication field. 展开更多
关键词 measurement-device-independent one-step quantum secure direct communication hyperentanglement Bell state measurement hyperentanglement-assisted complete polarization Bell state measurement
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The influences of canopy temperature measuring on the derived crop water stress index
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作者 WANG Hongxi LI Fei +4 位作者 SHEN Hongtao LI Mengyu YIN Gongchao FANG Qin SHAO Liwei 《中国生态农业学报(中英文)》 CAS CSCD 北大核心 2024年第9期1503-1519,共17页
Crop water stress index(CWSI)is widely used for efficient irrigation management.Precise canopy temperature(T_(c))measurement is necessary to derive a reliable CWSI.The objective of this research was to investigate the... Crop water stress index(CWSI)is widely used for efficient irrigation management.Precise canopy temperature(T_(c))measurement is necessary to derive a reliable CWSI.The objective of this research was to investigate the influences of atmospheric conditions,settled height,view angle of infrared thermography,and investigating time of temperature measuring on the performance of the CWSI.Three irrigation treatments were used to create different soil water conditions during the 2020-2021 and 2021-2022 winter wheat-growing seasons.The CWSI was calculated using the CWSI-E(an empirical approach)and CWSI-T(a theoretical approach)based on the T_(c).Weather conditions were recorded continuously throughout the experimental period.The results showed that atmospheric conditions influenced the estimation of the CWSI;when the vapor pressure deficit(VPD)was>2000 Pa,the estimated CWSI was related to soil water conditions.The height of the installed infrared thermograph influenced the T_(c)values,and the differences among the T_(c)values measured at height of 3,5,and 10 m was smaller in the afternoon than in the morning.However,the lens of the thermometer facing south recorded a higher T_(c)than those facing east or north,especially at a low height,indicating that the direction of the thermometer had a significant influence on T_(c).There was a large variation in CWSI derived at different times of the day,and the midday measurements(12:00-15:00)were the most reliable for estimating CWSI.Negative linear relationships were found between the transpiration rate and CWSI-E(R^(2)of 0.3646-0.5725)and CWSI-T(R^(2)of 0.5407-0.7213).The relations between fraction of available soil water(FASW)with CWSI-T was higher than that with CWSI-E,indicating CWSI-T was more accurate for predicting crop water status.In addition,The R^(2)between CWSI-T and FASW at 14:00 was higher than that at other times,indicating that 14:00 was the optimal time for using the CWSI for crop water status monitoring.Relative higher yield of winter wheat was obtained with average seasonal values of CWSI-E and CWSI-T around 0.23 and 0.25-0.26,respectively.The CWSI-E values were more easily influenced by meteorological factors and the timing of the measurements,and using the theoretical approach to derive the CWSI was recommended for precise irrigation water management. 展开更多
关键词 Canopy temperature measuring time measuring height and direction Crop water stress index
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Direct Measurements of the Electron Energy Flux versus Electron Temperature Gradient in Tokamak Discharges
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作者 K.W.Gentle M.E.Austin P.E.Phillips 《Plasma Science and Technology》 SCIE EI CAS CSCD 2004年第1期2130-2134,共5页
Electron thermal transport is one of the most complex processes in fusionplasmas. It is generally described by a simple thermal diffusivity in transport analyses ofdischarges, but there is evidence of critical gradien... Electron thermal transport is one of the most complex processes in fusionplasmas. It is generally described by a simple thermal diffusivity in transport analyses ofdischarges, but there is evidence of critical gradient effects with moderate stiffness. By analyzingperiodic perturbations to an equilibrium, one canmeasure the variations in electron energy flux andelectron temperature gradient over the perturbation cycle, obtaining the flux as a function ofgradient over the range of parameters generated by the perturbation. Although time-dependenttransport analysis is very sensitive to noise in the input data, averaging over many cycles of aperiodic perturbation can provide data of sufficient quality. The analyses presented here are basedon the ECE temperature data with high spatial and temporal resolution and full profile coverage onDIII-D for sawteeth and modulated ECH heating. 展开更多
关键词 tokamak discharges electron energy flux electron temperature gradient direct measurements
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Investigation on the multi-hole directional coupler for power measurement of the J-TEXT ECRH system
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作者 Wenting WENG Donghui XIA +3 位作者 Yizhe TIAN Xixuan CHEN Zhijiang WANG Yuan PAN 《Plasma Science and Technology》 SCIE EI CAS CSCD 2022年第6期196-205,共10页
Power measurement is necessary for an electron cyclotron resonance heating(ECRH)system.The directional coupler method has been put forward to monitor high-power microwave from gyrotrons in real time.A multi-hole direc... Power measurement is necessary for an electron cyclotron resonance heating(ECRH)system.The directional coupler method has been put forward to monitor high-power microwave from gyrotrons in real time.A multi-hole directional coupler has been designed and manufactured for the 105 GHz/500 kW ECRH system on the J-TEXT tokamak.During the design process,we established the relationships between hole parameters and coupling characteristics based on the multi-hole coupling method and small-hole coupling theory.High-power tests have been carried out.The results indicated the reasonability of the theoretical design and practicality of the fabricated directional coupler.Sources of test errors have been discussed in detail,and the influences of spurious modes on the directional couplers have been emphatically analyzed. 展开更多
关键词 directional couplers power measurement ECRH system
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Absolutely Direct Frequency Measurement of Two-Photon Transition Using Multi-Peak Fitting Approach
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作者 戴少阳 李坤乾 +5 位作者 翟跃阳 夏巍 王青 熊炜 齐向晖 陈徐宗 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第1期32-35,共4页
The optical frequency comb has been widely used in precision measurement. In this study, a multi-peak fitting approach is first proposed to fit the two-photon transition spectrum which overlaps with the neighboring tr... The optical frequency comb has been widely used in precision measurement. In this study, a multi-peak fitting approach is first proposed to fit the two-photon transition spectrum which overlaps with the neighboring transition in Rb-87. The multi-peak fitting approach is used to eliminate the frequency shift affected by the neighboring transition. With locking the carrier envelope offset frequency at 1/4 repetition frequency, the transition frequency is measured to be 770569132739.9 +/- 5.8 kHz, which agrees well with the previous result recommended by Comite International des Poids et Mesures. 展开更多
关键词 In Absolutely direct Frequency measurement of Two-Photon Transition Using Multi-Peak Fitting Approach Rb
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2-6 First Direct Measurement of 12C(12C, n)23Mg at Stellar Energies
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作者 Tang Xiaodong B. Bucher +28 位作者 X. Fang A. Heger S. Almaraz-Calderon A. Alongi A.D. Ayangeakaa M. Beard A. Best J. Browne C. Cahillane M. Couder R.J. deBoer A. Kontos L. Lamm Y.J. Li A. Long W. Lu S. Lyons M. Notani D. Patel N. Paul M. Pignatari A. Roberts D. Robertson K. Smith E. Stech R. Talwar W.P. Tan M. Wiescher S.E. Woosley 《IMP & HIRFL Annual Report》 2015年第1期56-58,共3页
The first stars in the early Universe were formed about 400 million years after the big bang. Verification of the existence of these stars is important for our understanding of the evolution of the Universe[1]. It has... The first stars in the early Universe were formed about 400 million years after the big bang. Verification of the existence of these stars is important for our understanding of the evolution of the Universe[1]. It has been predicted that for Population-III stellar production yields, the abundances of odd-Z elements are remarkably deficient compared to their adjacent even-Z elements[2]. Astronomers are searching for long-lived, low mass stars with the unique nucleosynthetic pattern matching the predicted yields[3]. 展开更多
关键词 FIRST direct measurement
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2-10 Direct Measurement of the Main s-process Neutron Source
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作者 Tang Xiaodong Ren Jie +9 位作者 Chen Han Chen Zhijun Chen Xiongjun Huang Hanxiong Jiang Liyang Li Kuoang Ruan Xuchao Wang Shuo Zhang Ningtao the JUNA collaboration 《IMP & HIRFL Annual Report》 2014年第1期41-42,共2页
The 13C(, n)16O reaction is the key neutron source reaction for the main s-process nucleosynthesis[1]. Theimportant energy range (Gamow window) for the 13C( , n)16O reaction during the s-process spans from 140 to230 k... The 13C(, n)16O reaction is the key neutron source reaction for the main s-process nucleosynthesis[1]. Theimportant energy range (Gamow window) for the 13C( , n)16O reaction during the s-process spans from 140 to230 keV in the center of mass frame. Because of the Coulomb barrier, the cross sections drop exponentially asmeasurement approaches the Gamow window energies. Limited by cosmic ray background and the available beamintensity, the ground-based measurements are limited to energies above 280 keV. Therefore, the extrapolationbased on R-matrix calculation and/or in-direct measurement is the current method to estimate the cross sectionsfor astrophysical interest with limited precision. Moreover, due to the existence of sub-threshold resonances, thereare rather large uncertainties associated with the extrapolated cross sections which limit the precision of the currentreaction rate and thus prevent us from a complete understanding of the nucleosynthesis of heavy elements. 展开更多
关键词 direct measurement NEUTRON
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Liver Stiffness Measurement Is Useful to Predict Early Recurrence of Hepatocellular Carcinoma after Sustained Virological Responses by Direct Antiviral Agents in Patients with Hepatitis C
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作者 Noboru Hirashima Hiroaki Iwase +3 位作者 Masaaki Shimada Noboru Urata Etsuko Iio Yasuhito Tanaka 《Open Journal of Gastroenterology》 2018年第7期255-268,共14页
Background: Recently, increases in the risk of Hepatocellular carcinoma (HCC) recurrence in patients with hepatitis C virus (HCV) due to the administration of direct antivirals agents (DAA) have been reported. Methods... Background: Recently, increases in the risk of Hepatocellular carcinoma (HCC) recurrence in patients with hepatitis C virus (HCV) due to the administration of direct antivirals agents (DAA) have been reported. Methods: One hundred and nineteen patients who were treated with DAA and achieved sustained viral response (SVR) were prospectively followed-up for over two years by transient elastography with liver stiffness measurements (LSM). Fourteen out of 119 patients (12%) had a history of being treated for HCC by radiofrequency ablation or resection and achieved complete responses after previous HCC treatments before the initiation of DAA. HCC was diagnosed by contrast-enhanced computed tomography (CT) or enhanced magnetic resonance imaging (MR). CT or MR was performed before the DAA treatment and every 6 months after during the follow-up. LSM was performed at the initiation of DAA (LSM0), at 24 weeks after the start of DAA (LSM24), at 48 weeks after that (LSM48) and at 2 years after that (LSM2y). Results: LSM0, LSM24, LSM48 and LSM2y of 105 patients without HCC were 7.5 (3.027.0), 6.0 (2.5 - 31.6), 4.6 (2.6?- 25.2) and 4.4 (3.1 - 29.9) kPa, respectively, showing significant improvements. Three out of 105 patients (2.9%) subsequently developed HCC and their LSM showed improvements. Eight out of fourteen patients (57%) with a history of HCC treatments subsequently developed HCC recurrence. LSM0 in the eight patients with recurrence increasing from 12.1 to 27.0 kPa, LSM24 from 9.9 to 26.6 kPa and LSM48 from 9.6 to 18.0 kPa. On the other hand, the six other patients without recurrence had LSM values that were less than 12.0 kPa at last. Based on the ROC analysis, LSM0 15.4, LSM24 12.8 and LSM48 9.6 kPa were identified as cut-off values. Conclusion: HCV patients previously treated for HCC with high LSM values before and after DAA have an elevated risk of HCC recurrence, particularly LSM24 >12.8 kPa and LSM48 >9.6 kPa. 展开更多
关键词 HEPATITIS C Virus Infection direct-Acting ANTIVIRALS HEPATOCELLULAR Carcinoma RECURRENCE Liver Stiffness measurement
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