Radiology Research and Practice最新文献

{"title":"Comparison of Intracranial and Extracranial Carotid Artery Calcifications between Obstructive Sleep Apnea Patients and Healthy Individuals: A Combined Cone-Beam Computed Tomography and Polysomnographic Study.","authors":"Mujgan Firincioglulari,&nbsp;Secil Aksoy,&nbsp;Kaan Orhan,&nbsp;Finn Rasmussen","doi":"10.1155/2022/1625779","DOIUrl":"https://doi.org/10.1155/2022/1625779","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to compare the presence and grades of intra- and extracranial carotid artery calcifications between obstructive sleep apnea (OSA) and non-OSA patients.</p><p><strong>Methods: </strong>CBCT records of 190 patients (95 OSA patients and 95 non-OSA patients) were retrospectively collected and analyzed. Patient demographic data, including age and gender for both study groups and body mass index (BMI), and apnea-hypopnea index (AHI) for OSA patients were recorded. The presence of intra- and extracranial carotid artery calcifications and the number of calcifications were noted according to the grading scale.</p><p><strong>Results: </strong>There was a significant difference in carotid artery calcifications between OSA patients and healthy individuals. A total of 56.8% of the OSA patients showed at least one carotid artery calcification, whereas 13.8% of healthy individuals showed at least one carotid artery calcification (<i>p</i> < 0.05). For intracranial calcifications, OSA patients showed a significantly higher prevalence than healthy individuals (<i>p</i> < 0.05). The results showed that as the apnea-hypopnea index increases in OSA patients, the incidence of carotid artery calcification increases simultaneously. AHI > 30 patients showed the highest percentage of calcifications.</p><p><strong>Conclusion: </strong>In conclusion, OSA patients showed a higher prevalence of calcified carotid artery calcifications than healthy individuals. The results can be interpreted as the higher AHI, the more carotid artery calcification occurs. As these lesions can be a precursor of future strokes, 3D MDCT/CBCT images should evaluate meticulously not only extracranial but also intracranially, especially in OSA patients.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9288337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40522074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic Efficiency of Various Systems for Automatic Analysis of Radiographs in the Detection of Lung Nodule","authors":"U. Smolnikova, P. Gavrilov, P. Yаblonskiy","doi":"10.52560/2713-0118-2022-3-51-66","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-3-51-66","url":null,"abstract":"The purpose of the study was to compare the effectiveness of various artificial intelligence systems for detecting foci and rounded lesions in the lungs. For testing, we selected four software products based on convolutional neural networks, positioning themselves as a sensitive system for evaluating digital chest radiographs. An analytical validation method was used for clinical evaluation. For diagnostics, 3 data samples were formed with the identification of signs of diseases (sample 1–5150 radiographs, detection of pathological changes 3 %; sample 2–100 radiographs, detection of pathological changes 6 %; sample 3–300 radiographs, detection of the prevalence of pathological changes 50 %). None of the software products passed the AUC threshold of 0.811 on all three samples. In all three samples, all software products have high accuracy and high sensitivity in detecting round formations, which leads to rare cases of overdiagnosis and special cases of underdiagnosis. The use of digital X-ray image analysis systems based on artificial intelligence technologies is a promising direction for high-quality diagnostics, primarily when considering their young radiologists as an additional opinion.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82823381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of the COVID-19 Pandemic on Trends in Cardiothoracic Imaging.","authors":"Kathleen M Capaccione,&nbsp;Sophia Huang,&nbsp;Jay S Leb,&nbsp;Belinda D'souza,&nbsp;Jonathan Goldstein,&nbsp;Mary M Salvatore","doi":"10.1155/2022/7923228","DOIUrl":"https://doi.org/10.1155/2022/7923228","url":null,"abstract":"<p><strong>Introduction: </strong>Here, we evaluate the effect of the COVID-19 pandemic on utilization of cardiothoracic imaging studies.</p><p><strong>Methods: </strong>We queried our radiology record system to retrospectively identify numbers of specific key cardiothoracic imaging studies for five years prior and during the COVID-19 pandemic. Statistical analysis was performed to evaluate changes in the number of exams in 2020 and 2021 compared to 2019.</p><p><strong>Results: </strong>Five-year retrospective analysis demonstrated progressive increases in nearly all cross-sectional studies. In 2020, daily chest radiograph utilization decreased with an overall number of daily radiographs of 406 (SD = 73.1) compared to 480 per day in 2019 (SD = 82.6) (<i>p</i> < 0.0001). Portable radiograph utilization was increased in 2020 averaging 320 (SD = 68.2) films daily in 2020 compared to 266 (SD = 29.1) in 2019 (<i>p</i> < 0.0001). Utilization of thoracic CT was decreased during the pandemic, with 21.8 (SD = 12.9) studies daily compared to 52.0 (SD = 21.4) (<i>p</i> < 0.0001) studies daily in 2019. Cardiac imaging utilization was also substantially decreased in 2020 compared to 2019, averaging a total of 3.8 (SD = 3.2) versus 10.8 (SD = 6.6) studies daily and 0.88 (SD = 1.7) versus 2.5 (SD = 2.3) studies daily for CT and MRI, respectively. Evaluation of cardiothoracic imaging for the subsequent 18 months after New York's entry to phase I recovery in June 2020 demonstrated that by one year after the emergence of COVID-19 imaging utilization had recovered to prepandemic levels. Cardiac imaging continued to increase throughout the chronic phase of the COVID-19 pandemic, reaching almost twice the prepandemic levels by the end of 2021.</p><p><strong>Conclusion: </strong>COVID-19 has had far-reaching effects on medicine and public health. Here, we demonstrate decreases in all cross-sectional cardiothoracic imaging studies, closely mirroring findings in other fields during the height of the pandemic, which have since rebounded.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9225849/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40398343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiological Cardiothoracic Ratio as a Potential Marker of Left Ventricular Hypertrophy Assessed by Echocardiography.","authors":"Krystian Truszkiewicz,&nbsp;Piotr Macek,&nbsp;Małgorzata Poręba,&nbsp;Rafał Poręba,&nbsp;Paweł Gać","doi":"10.1155/2022/4931945","DOIUrl":"https://doi.org/10.1155/2022/4931945","url":null,"abstract":"<p><p>The aim of the study was to verify the usefulness of the radiological cardiothoracic ratio as a potential marker of left ventricular hypertrophy assessed by echocardiography. The study included 96 patients (mean age: 49.52 ± 9.64 years). Chest radiograph in the PA projection and echocardiography were performed. In CR the measurement of the cardiothoracic ratio (CTR) was performed. Assuming CTR > 0.50, heart silhouette enlargement was diagnosed. In echocardiography, four types of left ventricular geometry were assessed: normal geometry (NG), concentric remodeling (CR), concentric hypertrophy (CH), and eccentric hypertrophy (EH). It was shown that patients with an enlarged heart silhouette were characterized by a significantly more frequent occurrence of left ventricular hypertrophy (LVH) on echocardiography than patients with a nonenlarged heart silhouette. In the subgroup of patients with LVH compared to the subgroup of patients with normal left ventricular geometry, CTR values are statistically significantly higher, and heart silhouette enlargement is significantly more frequent. The criterion \"CTR > 0.49\" estimates LVH with a sensitivity of 93.3% and specificity of 82.7%, which translates into a high accuracy of 84.4%. By analyzing the prediction of left ventricular geometry types, high accuracy of CH prediction was obtained using the \"CTR > 0.49\" criterion of 80.2% (with a high sensitivity of 84.0% and a satisfactory specificity of 60.0%) and a high accuracy of EH prediction using the \"CTR > 0.52\" criterion of 71.9% (with high sensitivity 80.5% and low specificity 36.8%), as well as low CR prediction accuracy of only 57.3% (with low sensitivity 36.7%, even if high specificity 78.7%). In summary, the radiological cardiothoracic ratio may be a moderate marker of left ventricular hypertrophy assessed according to standard echocardiographic criteria, provided that its cut-off point is standardized in each population of subjects.</p>","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9217623/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40398345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Present Status of Diagnostic Imaging of Postoperative Complications after Orthognatic Interventions (Literature Review)","authors":"E. Y. Lazarenko, D. A. Lezhnev, A. Drobyshev","doi":"10.52560/2713-0118-2022-4-30-41","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-4-30-41","url":null,"abstract":"This article presents a review of foreign literature on the methods of diagnostics imaging of postoperative complications in orthognathic surgery. After the analysis, it can be argued that high-tech methods, such as computed tomography, cone beam computed tomography have improved the possibilities of imaging diagnostics in obtaining clinically significant information about postoperative complications of the maxillofacial region. Nevertheless, it should be noted that foreign sources not cover such issues as: tomographic semiotics of postoperative complications in orthognatic surgery, the role and place of radiation technologies in the examination of patients with postoperative complications; don`t specified indications and contraindications for use of each methods.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74075914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of Quantitative Data of Arterial Spin Labeling Perfusion of the Liver at Admission and Follow up of Patients with Viral Cirrhosis","authors":"T. Morozova, E. Simakina, T. D. Gel't","doi":"10.52560/2713-0118-2022-4-9-19","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-4-9-19","url":null,"abstract":"The aim of this work is to analyze quantitative data of magnetic resonance ASL-perfusion of the liver at admission and follow up of patients with viral cirrhosis.The study included 34 patients with viral liver cirrhosis: 23 (67.6 %) men and 11 (32.4 %) women. All subjects underwent abdominal ultrasound with Dopplerography of the abdominal vessels, shear wave elastography, Arterial spin Labeling (ASL) — Perfusion of the liver by magnetic resonance imaging. Post-processing of ASL-perfusion images was carried out, their quantitative assessment in regenerative liver nodules and the parenchyma structure was carried out. It was found that for patients with liver cirrhosis according to Child-Pugh Class A, regardless of the degree of activity, the values of ASL-perfusion of the liver were 99.6 ± 1.8 ml/100g/min, with class B — 95.6 ± 4.9 ml/100g/min, with class C — 98.5 ± 2.6 ml/100g/min. To determine the diagnostic significance of liver ASL-perfusion, a generalized prognosis ratio ΔM = MNBF/ MHBF was calculated, where MNBF is a quantitative indicator of volumetric blood flow in the regenerative nodule, MHBF is a quantitative indicator of volumetric hepatic blood flow in the surrounding parenchyma. The results obtained by ASL-perfusion were compared with the data of shear wave elastography.For patients with viral liver cirrhosis the quantitative indicator of ASL-perfusion of the liver is less than 101.4 ml/100g/min. To predict the course of viral etiology cirrhosis, the prognosis ratio ΔM should be taken, and if ΔM > 1, this indicates a poor prognosis (fibrosis progression), if ΔM ≤ 1 — a favorable one (no fibrosis progression). Diagnostic and prognostic significance of ASL-liver perfusion for patients with viral cirrhosis at admission to the hospital — AUROC = 0.865 (95 % CI 0.843–0.928) and follow up — AUROC = 0.915 (95 % CI 0.881–0.946).","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75719347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Massive Splenic Infarction in a Child. Literature Review and Comparative Observations","authors":"E. B. Olkhova, N. Sholokhova, T. V. Mukaseeva, N. R. Shamratova, N. A. Savitskaya, O. V. Lukovkina","doi":"10.52560/2713-0118-2022-4-42-56","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-4-42-56","url":null,"abstract":"Massive splenic infarction (SI) is an extremely rare disease in childhood, the genesis of which is not always clear. Most often in children, SI develops against the background of oncohematological (in particular, myeloid leukemia), hematological (sickle cell anemia) and infectious (malaria, mononucleosis, cytomegalovirus infection) diseases and is small in size. Two own observations are presented, unique in the absence of a clear cause of SI and the massiveness of the lesion. In the first case, a 10­year­old girl was admitted to the hospital on about the 10th day of illness with complaints of undefined abdominal pain, about which she had already twice applied to other hospitals in Moscow. SI was suspected on ultrasound and confirmed on CT, and then the echographic dynamics of SI was followed for more than 2 months. Against the background of anticoagulant, antibacterial and symptomatic therapy, recovery was achieved. In the second case, total SI was observed in a premature infant with severe multiple organ failure. The publication is extensively illustrated and contains a brief review of the literature.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91335983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of COVID-19 Pandemic on Trauma CT Imaging","authors":"Y. Yan, Kai Hu, K. Shek, Jun Li, S. Attalla, John Ross Bonanni, J. Shankar, Lisa McPhee","doi":"10.1155/2022/9596148","DOIUrl":"https://doi.org/10.1155/2022/9596148","url":null,"abstract":"Purpose The goal of this study was to understand the impact of COVID-19 pandemic and associated lockdown measures on the volume, rate, and type of trauma presenting to the emergency department (ED) by using trauma-initiated CT studies to capture patient data. Materials and Methods We performed a retrospective observational study comparing patients undergoing CT scans for trauma during the 1st and 2nd lockdown periods compared to corresponding prepandemic months. During two lockdown periods, public places such as restaurants, libraries, parks, and shops across the province were shut down. Government-led messaging advised that people should stay at home and practice social distancing. The rate of trauma-initiated CT scans and the proportion of different types of traumas were compared between time periods. Results There was no significant difference in overall trauma-initiated CT scans between the prepandemic and pandemic levels. Motor vehicle collision (MVC) cases decreased from 18.2% to 15.6% during the first lockdown period (p = 0.049) and also reduced from 29.1% to 25.2% during the second lockdown period (p = 0.013). Trauma from falls increased from 19.1% to 27.5% (p = 0.036) during the first lockdown, despite no significant change during the 2nd lockdown. Furthermore, the percentage of stab injuries increased from 25.0% to 38.9% while blunt trauma decreased from 68.5% to 54.3% during two lockdowns (p = 0.015). Conclusion The total number of trauma-initiated CT scans did not significantly decrease during the lockdown periods. Stabbings and falls increased during lockdown periods while MVCs and blunt trauma decreased.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77608288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Volumetric Analysis of the Jaws in Skeletal Class I and III Patients with Different Facial Divergence Using CBCT Imaging","authors":"Rama Yasser Alhawasli, M. Ajaj, M. Y. Hajeer, Assil Mohammad Raef Al-Zahabi, Luai Mahaini","doi":"10.1155/2022/2416555","DOIUrl":"https://doi.org/10.1155/2022/2416555","url":null,"abstract":"Aim The main objective was to evaluate any possible maxillary or mandibular volumetric difference between hyperdivergent skeletal Class III (CIII), normodivergent skeletal CIII, hypodivergent skeletal CIII, and normodivergent skeletal Class I (CI) patients using cone-beam computed tomography (CBCT) images. Also, the secondary objective was to investigate any possible correlation between CBCT-derived lateral cephalometric variables and the mandibular and maxillary volumes (MdV and MxV, respectively). Materials and Methods 80 CBCT images of patients between 18 and 32 years of age were taken with one CBCT imaging device (Scanora 3D®, Soredex, Tuusula, Finland). The sample consisted of four groups: 20 hypodivergent skeletal CIII (11 males and 9 females), 20 normodivergent skeletal CIII (7 males and 13 females), 20 hyperdivergent skeletal CIII (8 males and 12 females), and 20 normodivergent skeletal CI (5 males and 15 females). The volumes of both jaws and the ratio of MxV/MdV were obtained using Mimics™ 19 software (Materialise, NV, Belgium), and 2D variables were obtained from CBCT-derived lateral cephalogram using AudaxCeph™ software (Orthodontic software suite, Ljubljana, Slovenia). One-way ANOVA test and Kruskal–Wallis analysis were employed to detect any possible significant difference between the volumetric variables, whereas Pearson's and Spearman's correlation coefficients were calculated to detect any possible relationship between the 2D variables and the volumetric measurements. Results There were no statistically significant differences in the maxillary volume or maxillary/mandibular ratio between the four groups (p=0.081 and 0.432, respectively). There was a significant difference in MdV between CIII hypodivergent (higher mean) and CIII hyperdivergent (p=0.039). There were some correlations between the MdV and 2D variables in the four studied groups especially in the posterior facial height (S-Go) and the facial depth (N-Go). There were some weaker correlations between the MxV and some 2D variables in the CIII hypodivergent and hyperdivergent groups. Conclusions The mandibular volume of the Class III hypodivergent patient was significantly greater than that of the Class III hyperdivergent patients. Correlations between the maxillary or mandibular volumes were found with some of the 2D variables. The volume of both jaws increased when the maxillofacial complex moved toward a horizontal growth pattern.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79529873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinic and Computed Tomographic Imaging of Lung Pathology in COVID-19 Comorbidity, Tuberculosis and Opportunistic Diseases in Patients with HIV Infection","authors":"A. V. Mishina, V. Mishin, D. A. Lezhnev, A. L. Sobkin","doi":"10.52560/2713-0118-2022-3-24-38","DOIUrl":"https://doi.org/10.52560/2713-0118-2022-3-24-38","url":null,"abstract":"The clinic and computer tomographic imaging of lung pathology in COVID-19 comorbidity, tuberculosis and opportunistic diseases in patients with stage IV of HIV infection, in the phase of progression, in the absence of ART in 29 patients compared with similar 29 patients, but without COVID-19 were studied. It was found that the comorbidity of COVID-19 and tuberculosis, stage IV of HIV infection, in the phase of progression, in the absence of ART is characterized by the generalization of tuberculosis and the development of opportunistic lung diseases, severe clinical picture and visualization with computed tomography of dissemination syndrome, pulmonary pattern pathology and adenopathy, which practically does not differ from patients without COVID-19. It is not possible to diagnose this comorbidity by clinical and radiation methods of research. Special microbiological and molecular genetic methods are needed to study diagnostic material from the respiratory system and other organs in order to prescribe timely etiological treatment.","PeriodicalId":51864,"journal":{"name":"Radiology Research and Practice","volume":null,"pages":null},"PeriodicalIF":2.7,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84132175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}