Luisa Siciliani, Giovanni Cappa, Caterina Zattera, Giuseppe Albi, Mario Umberto Mondelli, Luca Marzi
{"title":"Altered liver hemodynamics in patients with COVID-19: a cross sectional study.","authors":"Luisa Siciliani, Giovanni Cappa, Caterina Zattera, Giuseppe Albi, Mario Umberto Mondelli, Luca Marzi","doi":"10.1007/s40477-025-01012-z","DOIUrl":"https://doi.org/10.1007/s40477-025-01012-z","url":null,"abstract":"<p><strong>Aims: </strong>Abnormalities in liver biochemistry are common in COVID-19 patients. Hepatic vein Doppler waveform, typically triphasic, may become biphasic or monophasic in cirrhosis, correlating with liver dysfunction, fibrosis, inflammation, and portal hypertension. This study investigates liver ultrasound (US) features in COVID-19 patients, correlating hepatic vein Doppler waveform and portal vein velocity (PVV) with inflammatory indexes and clinical outcomes.</p><p><strong>Methods: </strong>Fifty-seven patients with SARS-CoV-2 infection participated in a crosssectional study. Bedside upper abdomen US evaluations, including B-mode and Doppler, were conducted using a convex probe. Hepatic vein Doppler waveforms were classified as triphasic, biphasic, or monophasic, and the hepatic vein waveform index (HVWI) was calculated. PVV was measured over three cardiac cycles. Tracings were blindly analyzed by three operators to ensure consistency.</p><p><strong>Results: </strong>Low HVWI and high PVV correlated with elevated LDH, ALT, D-dimer, and ferritin (p < 0.05). HVWI showed significant negative correlations with ferritin, D-dimer, and ALT (p < 0.05). D-Dimer and ferritin were higher in patients with biphasic/monophasic waveforms (p < 0.05). High PVV and larger spleen diameters predicted worse respiratory outcomes, including CPAP and tracheal intubation (p < 0.05). Optimal cut-off values for PVV (21.7 cm/s) and spleen diameter (9.84 cm) maximized sensitivity and specificity for predicting these outcomes. FIB-4 scores did not correlate with respiratory outcomes or hepatic hemodynamics (p > 0.05). Hemodynamic alterations were not significantly influenced by the presence of SLD (Steatotic Liver Disease).</p><p><strong>Conclusions: </strong>COVID-19 patients exhibit altered intrahepatic hemodynamics, with hepatic vein waveform abnormalities potentially reflecting liver inflammation and fibrosis. PVV and spleen diameter may serve as non-invasive predictors of respiratory outcomes.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143765637","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}
Austin T Coale, Stephanie C Pittman, Coby B Dorsey, Farhan Chowdry, David J Berkoff
{"title":"The effect of repetitive exercise on tensile changes in the infraspinatus muscle evaluated with ultrasound elastography.","authors":"Austin T Coale, Stephanie C Pittman, Coby B Dorsey, Farhan Chowdry, David J Berkoff","doi":"10.1007/s40477-025-01007-w","DOIUrl":"https://doi.org/10.1007/s40477-025-01007-w","url":null,"abstract":"<p><strong>Background: </strong>The ability to identify muscle strain accurately is a critical aspect in managing exercise-induced muscle damage. Using differences in muscle stiffness as a proxy for muscle damage and recovery can better inform the decision to continue exercise versus pursue recovery.</p><p><strong>Hypothesis/purpose: </strong>To identify changes in rotator cuff stiffness after a single bout of exercise as measured by ultrasound elastography.</p><p><strong>Study design: </strong>10 healthy subjects, average age of 23.7, were enrolled in this prospective interventional trial. Each subject had a baseline scan then completed a standardized exercise program followed by another scan and daily evaluations until the results returned to within 10% of baseline.</p><p><strong>Methods: </strong>Elastography measurements were collected around the infraspinatus tendon, and the deltoid was used as a baseline standard.</p><p><strong>Statistical analysis used: </strong>Summary statistics, t-test, and regression analysis were completed for the data.</p><p><strong>Results: </strong>Average strain was 0.5 at baseline, 0.7 immediately post-exercise, 0.6 on follow-up day 1, and 0.4 on follow-up day 2. There were statically significant differences between every timepoint. baseline-post 0.24, (p < 0.0001), post-day1 (decrease of 0.14, p < 0.0001), day1-day2 (decrease of 0.15, p < 0.0001), and BL-day2 (decrease of 0.05, p < 0.005).</p><p><strong>Conclusions: </strong>These results demonstrate that the infraspinatus muscle stiffness increases immediately after exercise and takes up to 48 h to return to within 10% of baseline. We also found that at day 2 there continued to be an overcorrection with the infraspinatus remaining softer at this time point.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143755787","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}
Mattia Paratore, Matteo Garcovich, Annamaria Amodeo, Francesca Fianchi, Francesco Santopaolo, Francesca Romana Ponziani, Maria Assunta Zocco, Antonio Gasbarrini, Laura Riccardi, Maurizio Pompili
{"title":"Evolution of focal nodular hyperplasia during long-term ultrasound follow-up: results from a single-center study.","authors":"Mattia Paratore, Matteo Garcovich, Annamaria Amodeo, Francesca Fianchi, Francesco Santopaolo, Francesca Romana Ponziani, Maria Assunta Zocco, Antonio Gasbarrini, Laura Riccardi, Maurizio Pompili","doi":"10.1007/s40477-025-01010-1","DOIUrl":"https://doi.org/10.1007/s40477-025-01010-1","url":null,"abstract":"<p><strong>Purpose: </strong>To examine the natural history of focal nodular hyperplasia (FNH) lesions through long-term ultrasound (US) follow-up and assess the relationship between clinical characteristics and size changes.</p><p><strong>Methods: </strong>We retrospectively enrolled 55 patients diagnosed with FNH who were followed with ultrasound for at least 24 months. A total of 94 FNH nodules were included in the final analysis. A significant change in size was defined as an increase or decrease of 0.5 cm or more, and nodules were classified as increased, decreased or stable. Additionally, we analyzed the association between clinical data and changes in nodule size.</p><p><strong>Results: </strong>The mean follow-up duration between the initial US examination at diagnosis and the last available examination was 58.3 ± 33.5 months (range: 24.2-186.6). The majority of nodules remained stable (47.9%) or decreased in size (35.1%), while a small proportion of nodules disappeared (11.7%) and only 7.3% showed an increase in size. No significant association was found between size variation and factors such as oral contraceptive use, pregnancy, BMI or follow-up duration.</p><p><strong>Conclusion: </strong>Changes in the size of FNHs during follow-up are relatively common, with most lesions remaining stable or undergoing regression or disappearance over time. These size variations do not appear to be influenced by hormonal factors or other clinical characteristics.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712079","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}
Benedetta Neri, Marco Di Mitri, Ilaria Corsini, Marcello Lanari, Michelangelo Baldazzi, Laura Greco, Simone D'Antonio, Claudio Antonellini, Rocco Minelli, Eugenio Rossi, Giuseppe Paviglianiti, Marcello Napolitano, Mario Lima
{"title":"Tiny patient, big challenge: pancreatic heterotopia causing ileo-ileal intussusception in an infant.","authors":"Benedetta Neri, Marco Di Mitri, Ilaria Corsini, Marcello Lanari, Michelangelo Baldazzi, Laura Greco, Simone D'Antonio, Claudio Antonellini, Rocco Minelli, Eugenio Rossi, Giuseppe Paviglianiti, Marcello Napolitano, Mario Lima","doi":"10.1007/s40477-025-01006-x","DOIUrl":"https://doi.org/10.1007/s40477-025-01006-x","url":null,"abstract":"<p><strong>Background: </strong>Intussusception is a common cause of intestinal obstruction in children, typically occurring between 6 months and 3 years of age. While most cases are idiopathic, rare cases involve pathological lead points. Ileo-ileal intussusception is an uncommon variant, often associated with anomalies such as heterotopic pancreatic tissue.</p><p><strong>Case presentation: </strong>We report a rare case of a 2-month-old infant presenting with inconsolable crying and feeding refusal, diagnosed with ileo-ileal intussusception due to pancreatic heterotopia. Ultrasound confirmed the diagnosis, leading to successful surgical resection of the affected ileal segment, with an uneventful recovery.</p><p><strong>Conclusion: </strong>This case emphasizes the importance of considering intussusception in younger infants with nonspecific symptoms. Early imaging, particularly ultrasound, plays a critical role in timely diagnosis. Though rare, pancreatic heterotopia can act as a pathological lead point, highlighting the need for awareness and prompt surgical intervention to optimize pediatric patient outcomes.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143702231","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":"Early ultrasound diagnosis of late recurrence of cutaneous melanoma after 11 years of surgery: time for questions and review of the literature.","authors":"Soledad Machado, Ximena Wortsman","doi":"10.1007/s40477-025-01008-9","DOIUrl":"https://doi.org/10.1007/s40477-025-01008-9","url":null,"abstract":"","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143702286","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}
Dacia Di Renzo, Cristina Gentile, Antonello Persico, Giuseppe Lauriti, Francesco Chiarelli, Gabriele Lisi
{"title":"Contrast-enhanced ultrasonography (CEUS) in the management of pediatric renal injuries: where are we now?","authors":"Dacia Di Renzo, Cristina Gentile, Antonello Persico, Giuseppe Lauriti, Francesco Chiarelli, Gabriele Lisi","doi":"10.1007/s40477-025-01011-0","DOIUrl":"https://doi.org/10.1007/s40477-025-01011-0","url":null,"abstract":"<p><strong>Purpose: </strong>Experience with CEUS in management of kidney post-traumatic injuries is limited, especially in pediatric age. This paper aimed to identify: clinical settings in which CEUS could be used as first diagnostic tool, skipping CT; CEUS ability to detect complications during non-operative management (NOM); and CEUS role in patients with collecting system injuries.</p><p><strong>Methods: </strong>Patients with renal trauma admitted between 2003 and 2023 were enrolled in a retrospective study. At T0, CT was performed in case of high-energy trauma, CT or CEUS in case of low-energy or/and localized trauma. CEUS was used during follow up (FU) in case of suspected complications and to follow healing of the lesions and urinomas.</p><p><strong>Results: </strong>Among 22 patients included, at T0 20/22 performed CT, 1/22 CEUS and 1/22 baseline US. During NOM CEUS was necessary: in early FU to rule out complications in 3/22 (1 anemization and 2 hematuria); in middle FU in 14/22 to authorize mobilization/discharge and monitor urinomas; in outpatient setting in 2/22, to authorize return to sport activities. Overall, a collecting system injury was detected in 6 patients by CT and in 1 by CEUS. In 3/7 a perirenal urinoma developed. All were monitored with CEUS or baseline US.</p><p><strong>Conclusions: </strong>CEUS is useful as first imaging study in low-energy and localized trauma, but confidence with CEUS is still to be improved and spread, to replace CT in selected cases. CEUS is valuable for detecting complications, avoiding repeat CT in most of cases. In expert hands CEUS can identify and monitor leakage indirectly.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143694401","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}
Barbora Stadlerova, Roman Skulec, Lenka Miksova, Vladimir Cerny
{"title":"Diagnostic reliability of duplex venous ultrasound for catheter-related thrombosis performed by a general intensive care nurse.","authors":"Barbora Stadlerova, Roman Skulec, Lenka Miksova, Vladimir Cerny","doi":"10.1007/s40477-025-01001-2","DOIUrl":"https://doi.org/10.1007/s40477-025-01001-2","url":null,"abstract":"<p><strong>Introduction: </strong>It has been shown that general intensive care nurses are able to perform an examination of the deep venous system of the lower extremities for the diagnosis of proximal deep vein thrombosis (DVT) using a compression ultrasound test with a high degree of reliability. (Skulec et al. in Eur J Intern Med 76:130-131, 2020) Another challenge for the use of vascular point-of-care ultrasound in intensive care is the diagnosis of central venous catheter-related thrombosis. It is a common problem that is often underdiagnosed. Due to the simplicity of the examination and the possible link with nursing care of inserted central venous catheters, this may be another potential diagnostic competency for critical care nurses.</p><p><strong>Methodology: </strong>Before the start of the study, each nurse participating in the study completed a two-hour training in duplex ultrasonography and examined 5 patients under supervision. Then patients in the intensive care unit (ICU) included in the study, underwent a duplex ultrasound performed by a nurse. Within 24 h, the examination was repeated by the ICU doctor. In the case of catheter insertion into the internal jugular vein (VJI) or the subclavian vein (VSC), the jugular vein, subclavian vein, and axillary vein (VA) were examined bilaterally. When the catheter was inserted into the femoral vein (VF), the patients were subjected to a duplex ultrasound of the femoral vein and the popliteal vein (VP) of both lower limbs. The examination results of each patient were blinded until both tests were performed. Calculations were used to evaluate the reliability of the test.</p><p><strong>Result: </strong>A total of 160 patients aged 62.9 ± 12.3 years were included. In our sample, the prevalence of CRT was found to be 41%. The overall sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of examinations performed by general intensive care nurses were 90.8%, 97.1%, 91.8%, 96.8%, and 95.5%, respectively.</p><p><strong>Conclusion: </strong>The results of our study suggest that general ICU nurses are able to perform inpatient CRT duplex ultrasound with excellent specificity but only moderate sensitivity after a short, predefined training.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143626696","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}
Anna Masucci, Dolores Ferrara, Elena Sammarco, Filomena Barbato, Francesca De Chiara, Raffaele Zeccolini, Francesco Esposito
{"title":"Not everything that is red is hemangioma.","authors":"Anna Masucci, Dolores Ferrara, Elena Sammarco, Filomena Barbato, Francesca De Chiara, Raffaele Zeccolini, Francesco Esposito","doi":"10.1007/s40477-025-01005-y","DOIUrl":"https://doi.org/10.1007/s40477-025-01005-y","url":null,"abstract":"<p><strong>Purpose: </strong>To demonstrate the utility of ultrasound and color Doppler examination in differentiating red skin lesions.</p><p><strong>Methods: </strong>We used high-frequency probes to identify common features of infantile hemangioma that can help distinguish it from other red skin lesions.</p><p><strong>Results: </strong>In the pediatric population red skin lesions are frequently encountered in clinical practice. The most common red skin lesion is infantile hemangioma, which, in most cases, can be easily diagnosed clinically. An ultrasound examination is necessary to evaluate the lesion's depth or determine its proximity to nearby critical structures. Sometimes is not easy to differentiate it from other reddish lesions with a clinical examination alone. In recent years, thanks to the development of increasingly high-frequencies ultrasound probes, it has been possible to investigate them, evaluating their ultrasound characteristics and integrating them with those of the color Doppler examination. We highlight some ultrasound and color-Doppler features that can guide through differential diagnosis between infantile hemangioma and other clinically red skin lesions such as pyogenic granuloma, idiopathic facial aseptic granuloma, juvenile xanthogranuloma, congenital myofibroma and pilomatricoma.</p><p><strong>Conclusions: </strong>Ultrasound and color Doppler have proven to be useful tools to guide differential diagnosis between skin lesions with a reddish color that can't be clearly identified as hemangiomas with a physical examination alone.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143598359","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}
Najmeh Pirasteh, Hamid Reza Farpour, Parisa Najafi, Mohammad Hossein Jabbedari
{"title":"Comparative ultrasonographic assessment of supraspinatus, infraspinatus, and biceps tendon thickness in bodybuilders and non-sportsperson.","authors":"Najmeh Pirasteh, Hamid Reza Farpour, Parisa Najafi, Mohammad Hossein Jabbedari","doi":"10.1007/s40477-025-01004-z","DOIUrl":"https://doi.org/10.1007/s40477-025-01004-z","url":null,"abstract":"<p><strong>Background: </strong>Healthy tendons are crucial for sportspersons to prevent injuries. While resistances exercise is known to increase muscle size and composition, its impact on tendon thickness remains unclear. This study investigated potential differences in tendon thickness between bodybuilders and non-sportsperson control group and their association with training intensity/duration in bodybuilders.</p><p><strong>Methods: </strong>Forty men in the age range 18 to 40 were included in the study. Fifteen bodybuilders (2-3 weekly upper body resistance training sessions, moderate-to-high intensity, > 6 months) and 25 non-sportsperson controls participated. All were free of tendon injuries in the studied muscles (biceps, supraspinatus, infraspinatus). Two independent physiatrists measured tendon thickness using ultrasound.</p><p><strong>Results: </strong>No significant differences in tendon thickness were found between bodybuilders and non-sportsperson controls (dominant/non-dominant sides). However, within the bodybuilding group, tendon thickness showed strong positive correlations with both training intensity (r = 0.59-0.84) and exercise duration (r = 0.71-0.88).</p><p><strong>Conclusion: </strong>This study found no overall group differences in tendon thickness between bodybuilders and non-sportsperson controls. However, for bodybuilders, increased training intensity and duration were associated with thicker tendons. Further research with larger samples and advanced techniques is warranted to understand the complex relationship between resistance training and tendon adaptations.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143588184","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}
Nuno Ferreira-Silva, Tomás Ribeiro-Da-Silva, Lia Lucas-Neto, Keith Aziz, Wesley Troyer, Raúl A Rosario-Concepción
{"title":"Minimally invasive ultrasound-guided thread carpal tunnel release: a video demonstration protocol.","authors":"Nuno Ferreira-Silva, Tomás Ribeiro-Da-Silva, Lia Lucas-Neto, Keith Aziz, Wesley Troyer, Raúl A Rosario-Concepción","doi":"10.1007/s40477-025-01003-0","DOIUrl":"https://doi.org/10.1007/s40477-025-01003-0","url":null,"abstract":"<p><p>Carpal tunnel syndrome is the most common compressive peripheral neuropathy, often requiring surgical treatment. Recently, ultrasound-guided thread carpal tunnel release has become an attractive minimally invasive alternative to the traditional surgical approaches. This incision-less technique utilizes an abrasive thread and a Tuohy needle to achieve division of the transverse carpal ligament while sparing adjacent soft tissue to decrease post-procedural pain and enhance recovery. Although several step-by-step descriptions of the technique have been published in recent years, no video demonstration of the procedure and the pre-procedure scanning needed for surgical planning exists. This paper aims to provide a video-based guide to ultrasound-guided thread carpal tunnel release and propose a pre-procedure scanning protocol for physicians considering implementing this procedure into their practice.</p>","PeriodicalId":51528,"journal":{"name":"Journal of Ultrasound","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143568789","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}