BACKGROUND Monomorphic epitheliotropic intestinal T-cell lymphoma(MEITL)is an uncom-mon and highly aggressive form of lymphoma that represents less than 1%of all non-Hodgkin’s lymphomas.At present,few reports have fo...BACKGROUND Monomorphic epitheliotropic intestinal T-cell lymphoma(MEITL)is an uncom-mon and highly aggressive form of lymphoma that represents less than 1%of all non-Hodgkin’s lymphomas.At present,few reports have focused on the imaging findings of MEITL,which poses significant challenges for clinical diagnosis.A 78-year-old female with recurrent vomiting and abdominal distension was admitted to our hospital.Magnetic resonance and^(18)F-fluorodeoxyglucose positron emission tomography/computed tomography(^(18)F-FDG PET/CT)examinations revealed multiple segmental malignant tumors in the small intestine with me-senteric lymph node metastasis.An endoscopic biopsy revealed MEITL.After three cycles of reduced-dose cyclophosphamide,vinorelbine,and prednisone che-motherapy,follow-up^(18)F-FDG PET/CT demonstrated a partial response to treatment.The patient was still alive after 6 months of follow-up.CONCLUSION Magnetic resonance imaging serves as a valuable tool in detecting malignant tumor lesions of MEITL,whereas^(18)F-FDG PET/CT offers additional assistance in tumor staging and assessing treatment efficacy.展开更多
According to the measurement principle of the traditional interferometer,a narrowband signal model is established and used,however,for wideband signals or multiple signals,this model is invalid.For the problems of dir...According to the measurement principle of the traditional interferometer,a narrowband signal model is established and used,however,for wideband signals or multiple signals,this model is invalid.For the problems of direction finding with interferometer for wideband signals and multiple signals scene,a frequency domain phase interferometer is proposed and the concrete implementation scheme is given.The proposed method computes the phase difference in frequency domain,and finds multi-target results with judging the spectrum amplitude changing,and uses the frequency phase difference to compute the arrival angle.Theoretical analysis and simulation results show that the proposed method effectively solves the problem of the angle estimation with phase interferometer for wideband signals,and has good performance in multiple signals scene with nonoverlapping spectrum or partially overlapping.In addition,the wider the signal bandwidth,the better direction finding performance of this algorithm.展开更多
To describe and analyze the current status of benefit-finding research in patients with chronic diseases and to provide a reference for clinical practice and future research in this field.Using Arksey and O’Malley’s...To describe and analyze the current status of benefit-finding research in patients with chronic diseases and to provide a reference for clinical practice and future research in this field.Using Arksey and O’Malley’s scoping review methodology as a framework,we searched PubMed,Web of Science,Science Direct,and CINAHL(4 English databases);and China National Knowledge Infrastructure,the VIP Database for Chinese Technical Periodicals,the Wan Fang Database and China Biomedical Database(4 Chinese databases)for literature on benefit finding in patients with chronic diseases,with a search time frame of construction to April 20,2024,and the literature was screened,extracted,and summarized.A total of 44 papers were included,comprising 18 in Chinese and 26 in English.Among them,a total of 19 assessment tools were used,and the influential factors investigated were categorized into socio-demographic characteristics,disease-related characteristics,psychological and behavioral characteristics,coping styles,and social support.Benefit finding is found to be a positive psychological experience and important for patients with chronic diseases,and the influencing factors are complex and diverse,with a wide range of assessment tools.However,domestic tools lack autonomy and specificity.Clinical caregivers and staff should develop relevant assessment tools and formulate a personalized research plan based on the characteristics of patients with chronic diseases in China to promote the adoption of healthy lifestyles by patients with chronic diseases,improve their self-management ability,and provide a practical basis for improving the quality of life of patients with chronic diseases.展开更多
Track finding is a complex optimization problem,originally introduced in particle physics for the reconstruction of the trajectories of particles.A track is typically composed of several consecutive segments,which tog...Track finding is a complex optimization problem,originally introduced in particle physics for the reconstruction of the trajectories of particles.A track is typically composed of several consecutive segments,which together form a smooth curve without any bifurcations.In this paper,we investigate various modeling approaches to assess their effectiveness and impact when applied to track finding,using both quantum and classical methods.We present implementations of three classical models using CPLEX,two quantum models on actual D-Wave quantum computers,and one quantummodel on a D-Wave simulator.The results show that,while CPLEX provides better results than D-Wave on small instances,D-Wave is able to propose solutions in shorter computation times for large instances,although the gap with the optimal solution tends to increase.To the best of our knowledge,this is the first numerical study comparing a non-quantum approach based on classical algorithms(Simplex and Branch and Bound)used in commercial software with a quantum approach offered by D-Wave.The results do not show the quantum supremacy typically expected,but they do demonstrate that quantum solutions can be competitive with classical approaches,and even more efficient than some classical modeling and solving methods.展开更多
BACKGROUND Crohn’s disease(CD)patients with intestinal involvement often require surgical intervention due to resistance to medical therapy.Postoperative recurrence remains a significant challenge,with the Rutgeerts ...BACKGROUND Crohn’s disease(CD)patients with intestinal involvement often require surgical intervention due to resistance to medical therapy.Postoperative recurrence remains a significant challenge,with the Rutgeerts score commonly used to predict endoscopic recurrence.AIM To evaluate the relationship between microscopic and macroscopic pathological findings in resected intestinal specimens and the Rutgeerts score to predict endoscopic recurrence in CD patients.METHODS This retrospective cohort study included 32 patients over 18 years of age with intestinal CD who underwent surgery at General Surgery Clinic of Ankara Bilkent City Hospital between November 2019 and October 2023.Resection specimens were histopathologically re-examined,and postoperative colonoscopy reports were classified according to the Rutgeerts score.The association between pathological findings and endoscopic recurrence was analyzed statistically.RESULTS No significant association was found between macroscopic findings and Rutgeerts scores or endoscopic recurrence(P>0.05).However,the presence and severity of neutrophilic cryptitis(P=0.035)and crypt abscesses(P=0.010)in microscopic findings were significantly associated with higher Rutgeerts scores,indicating a parallel increase with endoscopic recurrence.Other microscopic findings showed no significant correlation with Rutgeerts scores or endoscopic recurrence(P>0.05).CONCLUSION The presence of neutrophilic cryptitis and crypt abscesses in resected intestinal specimens of CD patients increases the likelihood of endoscopic recurrence.Early postoperative medical treatment and close endoscopic follow-up may benefit high-risk patients to prevent recurrence,with treatment decisions made by a weekly multidisciplinary council involving General Surgery,Gastroenterology,and Radiology.展开更多
Reconstructing the trajectories of charged particles in high-energy physics experiments is a complex task,particularly for long-lived particles.At the future Super Tau-Charm Facility(STCF),such particles are expected ...Reconstructing the trajectories of charged particles in high-energy physics experiments is a complex task,particularly for long-lived particles.At the future Super Tau-Charm Facility(STCF),such particles are expected to appear in several key benchmark physics processes.A Common Tracking Software was used to reconstruct the trajectories of long-lived particles,revealing that the track-finding performance of the widely used combinatorial Kalman filter is limited by its seeding algorithm.This limitation can be mitigated by guiding the combinatorial Kalman filter using initial tracks provided by the Hough transform.The track-finding performance of the combined Hough transform and combinatorial Kalman filter was evaluated using the process J∕ψ→Λ(→pπ−)Λ(→pπ+)at STCF.展开更多
AIM:To analyze the ocular findings of patients who received lifelong leptin therapy due to congenital leptin deficiency(CLD),an extremely rare condition.METHODS:A prospective,cross-sectional comparative study was perf...AIM:To analyze the ocular findings of patients who received lifelong leptin therapy due to congenital leptin deficiency(CLD),an extremely rare condition.METHODS:A prospective,cross-sectional comparative study was performed on six patients with CLD and 13 healthy age-and sex-matched controls.The central corneal thickness(CCT),anterior chamber depth(ACD),axial length(AL),keratometry(K1,K2),optical coherence tomography(OCT),and OCT angiography parameters were compared between the leptin and control groups at the baseline visit.The change in these measurements in leptin patients over a two-year period was analyzed.RESULTS:CLD patients had lower mean AL,ACD,and CCT(P≤0.012 for all).Mean K1,K2(P≤0.047 for both),choroidal thickness(P≤0.001),and central ganglion cell layer(GCL)thickness(P=0.029)were higher in the leptin group.Perifoveal superficial capillary plexus(SCP)density was decreased in all quadrants except the temporal region(P<0.05),and parafoveal deep capillary plexus(DCP)density was decreased in the superior hemisphere,temporal quadrant(P≤0.036 for both)and nasal quadrant(P=0.048)in the leptin group.During the two-year follow-up,no changes in anterior and posterior segment measurements were observed in the leptin patients,except for subfoveal choroidal thickness(P<0.001).CONCLUSION:CLD patients exhibit structural alterations in both the anterior and posterior segments of the eye,including notable changes in retinal and choroidal vasculature.However,there is limited evidence concerning the influence of leptin therapy on the eye.展开更多
Electronic reconnaissance units commonly utilize an interferometer direction-finding system to measure the incoming direction of radar radiation signals.This approach enables the accurate determination of threat sourc...Electronic reconnaissance units commonly utilize an interferometer direction-finding system to measure the incoming direction of radar radiation signals.This approach enables the accurate determination of threat source locations,which is essential for devising route plans oriented toward flight path generation.When a frequency diverse array(FDA)system is adopted by ground radars,errors are introduced into the angle measurements of the passive direction finding system.To address this issue,this study starts with FDA model establishment and equiphasic surface characteristics analysis and analyzes the principles of FDA deception in identifying one-dimensional single-baseline interferometer directions.Additionally,the Cramer-Rao bounds of the signal carrier frequency estimation error and angle measurement error during the interferometer’s direction finding process are considered.The simulation results verify that the one-dimensional single-baseline interferometer direction finding system can be deceived by the FDA radar,and the FDA with a sine frequency offset exhibits the optimum deception effect.展开更多
基金Supported by the National Natural Science Foundation of China,No.82160330the Science and Technology Program of the Health Commission of Jiangxi Province,No.2025110045+1 种基金the Ganzhou Science and Technology Planning Project,No.GZ2024YLJ016,No.GZ2024YLJ026,and No.GZ2024ZSF064the Ganzhou Health Commission Scientific Research Planning Project,No.GZWJW202402108.
文摘BACKGROUND Monomorphic epitheliotropic intestinal T-cell lymphoma(MEITL)is an uncom-mon and highly aggressive form of lymphoma that represents less than 1%of all non-Hodgkin’s lymphomas.At present,few reports have focused on the imaging findings of MEITL,which poses significant challenges for clinical diagnosis.A 78-year-old female with recurrent vomiting and abdominal distension was admitted to our hospital.Magnetic resonance and^(18)F-fluorodeoxyglucose positron emission tomography/computed tomography(^(18)F-FDG PET/CT)examinations revealed multiple segmental malignant tumors in the small intestine with me-senteric lymph node metastasis.An endoscopic biopsy revealed MEITL.After three cycles of reduced-dose cyclophosphamide,vinorelbine,and prednisone che-motherapy,follow-up^(18)F-FDG PET/CT demonstrated a partial response to treatment.The patient was still alive after 6 months of follow-up.CONCLUSION Magnetic resonance imaging serves as a valuable tool in detecting malignant tumor lesions of MEITL,whereas^(18)F-FDG PET/CT offers additional assistance in tumor staging and assessing treatment efficacy.
文摘According to the measurement principle of the traditional interferometer,a narrowband signal model is established and used,however,for wideband signals or multiple signals,this model is invalid.For the problems of direction finding with interferometer for wideband signals and multiple signals scene,a frequency domain phase interferometer is proposed and the concrete implementation scheme is given.The proposed method computes the phase difference in frequency domain,and finds multi-target results with judging the spectrum amplitude changing,and uses the frequency phase difference to compute the arrival angle.Theoretical analysis and simulation results show that the proposed method effectively solves the problem of the angle estimation with phase interferometer for wideband signals,and has good performance in multiple signals scene with nonoverlapping spectrum or partially overlapping.In addition,the wider the signal bandwidth,the better direction finding performance of this algorithm.
文摘To describe and analyze the current status of benefit-finding research in patients with chronic diseases and to provide a reference for clinical practice and future research in this field.Using Arksey and O’Malley’s scoping review methodology as a framework,we searched PubMed,Web of Science,Science Direct,and CINAHL(4 English databases);and China National Knowledge Infrastructure,the VIP Database for Chinese Technical Periodicals,the Wan Fang Database and China Biomedical Database(4 Chinese databases)for literature on benefit finding in patients with chronic diseases,with a search time frame of construction to April 20,2024,and the literature was screened,extracted,and summarized.A total of 44 papers were included,comprising 18 in Chinese and 26 in English.Among them,a total of 19 assessment tools were used,and the influential factors investigated were categorized into socio-demographic characteristics,disease-related characteristics,psychological and behavioral characteristics,coping styles,and social support.Benefit finding is found to be a positive psychological experience and important for patients with chronic diseases,and the influencing factors are complex and diverse,with a wide range of assessment tools.However,domestic tools lack autonomy and specificity.Clinical caregivers and staff should develop relevant assessment tools and formulate a personalized research plan based on the characteristics of patients with chronic diseases in China to promote the adoption of healthy lifestyles by patients with chronic diseases,improve their self-management ability,and provide a practical basis for improving the quality of life of patients with chronic diseases.
文摘Track finding is a complex optimization problem,originally introduced in particle physics for the reconstruction of the trajectories of particles.A track is typically composed of several consecutive segments,which together form a smooth curve without any bifurcations.In this paper,we investigate various modeling approaches to assess their effectiveness and impact when applied to track finding,using both quantum and classical methods.We present implementations of three classical models using CPLEX,two quantum models on actual D-Wave quantum computers,and one quantummodel on a D-Wave simulator.The results show that,while CPLEX provides better results than D-Wave on small instances,D-Wave is able to propose solutions in shorter computation times for large instances,although the gap with the optimal solution tends to increase.To the best of our knowledge,this is the first numerical study comparing a non-quantum approach based on classical algorithms(Simplex and Branch and Bound)used in commercial software with a quantum approach offered by D-Wave.The results do not show the quantum supremacy typically expected,but they do demonstrate that quantum solutions can be competitive with classical approaches,and even more efficient than some classical modeling and solving methods.
文摘BACKGROUND Crohn’s disease(CD)patients with intestinal involvement often require surgical intervention due to resistance to medical therapy.Postoperative recurrence remains a significant challenge,with the Rutgeerts score commonly used to predict endoscopic recurrence.AIM To evaluate the relationship between microscopic and macroscopic pathological findings in resected intestinal specimens and the Rutgeerts score to predict endoscopic recurrence in CD patients.METHODS This retrospective cohort study included 32 patients over 18 years of age with intestinal CD who underwent surgery at General Surgery Clinic of Ankara Bilkent City Hospital between November 2019 and October 2023.Resection specimens were histopathologically re-examined,and postoperative colonoscopy reports were classified according to the Rutgeerts score.The association between pathological findings and endoscopic recurrence was analyzed statistically.RESULTS No significant association was found between macroscopic findings and Rutgeerts scores or endoscopic recurrence(P>0.05).However,the presence and severity of neutrophilic cryptitis(P=0.035)and crypt abscesses(P=0.010)in microscopic findings were significantly associated with higher Rutgeerts scores,indicating a parallel increase with endoscopic recurrence.Other microscopic findings showed no significant correlation with Rutgeerts scores or endoscopic recurrence(P>0.05).CONCLUSION The presence of neutrophilic cryptitis and crypt abscesses in resected intestinal specimens of CD patients increases the likelihood of endoscopic recurrence.Early postoperative medical treatment and close endoscopic follow-up may benefit high-risk patients to prevent recurrence,with treatment decisions made by a weekly multidisciplinary council involving General Surgery,Gastroenterology,and Radiology.
基金supported by the National Natural Science Foundation of China(Nos.12375194,12341504,12375197,12025502)。
文摘Reconstructing the trajectories of charged particles in high-energy physics experiments is a complex task,particularly for long-lived particles.At the future Super Tau-Charm Facility(STCF),such particles are expected to appear in several key benchmark physics processes.A Common Tracking Software was used to reconstruct the trajectories of long-lived particles,revealing that the track-finding performance of the widely used combinatorial Kalman filter is limited by its seeding algorithm.This limitation can be mitigated by guiding the combinatorial Kalman filter using initial tracks provided by the Hough transform.The track-finding performance of the combined Hough transform and combinatorial Kalman filter was evaluated using the process J∕ψ→Λ(→pπ−)Λ(→pπ+)at STCF.
文摘AIM:To analyze the ocular findings of patients who received lifelong leptin therapy due to congenital leptin deficiency(CLD),an extremely rare condition.METHODS:A prospective,cross-sectional comparative study was performed on six patients with CLD and 13 healthy age-and sex-matched controls.The central corneal thickness(CCT),anterior chamber depth(ACD),axial length(AL),keratometry(K1,K2),optical coherence tomography(OCT),and OCT angiography parameters were compared between the leptin and control groups at the baseline visit.The change in these measurements in leptin patients over a two-year period was analyzed.RESULTS:CLD patients had lower mean AL,ACD,and CCT(P≤0.012 for all).Mean K1,K2(P≤0.047 for both),choroidal thickness(P≤0.001),and central ganglion cell layer(GCL)thickness(P=0.029)were higher in the leptin group.Perifoveal superficial capillary plexus(SCP)density was decreased in all quadrants except the temporal region(P<0.05),and parafoveal deep capillary plexus(DCP)density was decreased in the superior hemisphere,temporal quadrant(P≤0.036 for both)and nasal quadrant(P=0.048)in the leptin group.During the two-year follow-up,no changes in anterior and posterior segment measurements were observed in the leptin patients,except for subfoveal choroidal thickness(P<0.001).CONCLUSION:CLD patients exhibit structural alterations in both the anterior and posterior segments of the eye,including notable changes in retinal and choroidal vasculature.However,there is limited evidence concerning the influence of leptin therapy on the eye.
基金supported by the National Natural Science Foundation of China Youth Fund Support Project(61503408)Shaanxi Provincial Association for Science and Technology Youth Talent Support Program Project(20230137)Shaanxi Provincial Natural Science Basic Research Program General Project(2023JCYB509).
文摘Electronic reconnaissance units commonly utilize an interferometer direction-finding system to measure the incoming direction of radar radiation signals.This approach enables the accurate determination of threat source locations,which is essential for devising route plans oriented toward flight path generation.When a frequency diverse array(FDA)system is adopted by ground radars,errors are introduced into the angle measurements of the passive direction finding system.To address this issue,this study starts with FDA model establishment and equiphasic surface characteristics analysis and analyzes the principles of FDA deception in identifying one-dimensional single-baseline interferometer directions.Additionally,the Cramer-Rao bounds of the signal carrier frequency estimation error and angle measurement error during the interferometer’s direction finding process are considered.The simulation results verify that the one-dimensional single-baseline interferometer direction finding system can be deceived by the FDA radar,and the FDA with a sine frequency offset exhibits the optimum deception effect.
