WFUMB Ultrasound Open最新文献

{"title":"Multiparametric quantification and visualization of liver fat using ultrasound","authors":"Jihye Baek ,&nbsp;Ahmed El Kaffas ,&nbsp;Aya Kamaya ,&nbsp;Kenneth Hoyt ,&nbsp;Kevin J. Parker","doi":"10.1016/j.wfumbo.2024.100045","DOIUrl":"10.1016/j.wfumbo.2024.100045","url":null,"abstract":"<div><h3>Objectives</h3><p>Several ultrasound measures have shown promise for assessment of steatosis compared to traditional B-scan, however clinicians may be required to integrate information across the parameters. Here, we propose an integrated multiparametric approach, enabling simple clinical assessment of key information from combined ultrasound parameters.</p></div><div><h3>Methods</h3><p>We have measured 13 parameters related to ultrasound and shear wave elastography. These were measured in 30 human subjects under a study of liver fat. The 13 individual measures are assessed for their predictive value using independent magnetic resonance imaging-derived proton density fat fraction (MRI-PDFF) measurements as a reference standard. In addition, a comprehensive and fine-grain analysis is made of all possible combinations of sub-sets of these parameters to determine if any subset can be efficiently combined to predict fat fraction.</p></div><div><h3>Results</h3><p>We found that as few as four key parameters related to ultrasound propagation are sufficient to generate a linear multiparametric parameter with a correlation against MRI-PDFF values of greater than 0.93. This optimal combination was found to have a classification area under the curve (AUC) approaching 1.0 when applying a threshold for separating steatosis grade zero from higher classes. Furthermore, a strategy is developed for applying local estimates of fat content as a color overlay to produce a visual impression of the extent and distribution of fat within the liver.</p></div><div><h3>Conclusion</h3><p>In principle, this approach can be applied to most clinical ultrasound systems to provide the clinician and patient with a rapid and inexpensive estimate of liver fat content.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"2 1","pages":"Article 100045"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949668324000132/pdfft?md5=4195f5791c52a264bc45b6e1cf1edb83&pid=1-s2.0-S2949668324000132-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140796533","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":"A new method of the dynamic assessment of the supraspinatus using ultrasonography","authors":"Junsuke Miyasaka ,&nbsp;Ryuzo Arai ,&nbsp;Yuji Yoshioka ,&nbsp;Takuma Yuri ,&nbsp;Naoki Umatani ,&nbsp;Kohei Nishitani ,&nbsp;Shinichiro Nakamura ,&nbsp;Shinichi Kuriyama ,&nbsp;Ryosuke Ikeguchi ,&nbsp;Shuichi Matsuda","doi":"10.1016/j.wfumbo.2024.100042","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2024.100042","url":null,"abstract":"<div><h3>Objective</h3><p>We devised a new dynamic assessment of the supraspinatus (DAS) using ultrasonography. The objectives of this study are as follows: 1. to verify the moving distance of the supraspinatus using ultrasonography in the cadaveric shoulders; 2. to evaluate the reliability of DAS in patients with rotator cuff tear (RCT) and investigate the correlation between DAS and magnetic resonance imaging (MRI) assessments.</p></div><div><h3>Methods</h3><p>In Part 1, the supraspinatus in both shoulders of one cadaveric specimen was pulled laterally by 5 mm and 10 mm. In the ultrasonographic movie of the supraspinatus, the moving distances of a placed marker and a representative speckle which was visually identified as a high-intensity dot with the longest track were measured. In Part 2, among 62 RCT shoulders we verified the interrater agreement of DAS and correlation between DAS and MRI findings of RCT size and muscle atrophy.</p></div><div><h3>Results</h3><p>In Part 1, during the supraspinatus traction, the moving distances of the marker and speckle were almost same; 1.07–2.68 mm and 1.60–2.67 mm, respectively (the pulled distance was 5 mm), 3.95–5.35 mm and 3.59–5.60 mm (the pulled distance was 10 mm). In Part 2, DAS showed a high interrater agreement of 0.74 in the kappa coefficients. DAS showed no correlations with tear size and atrophy, respectively (Spearman's rank correlation coefficient (ρ): 0.14 (p = 0.35) and 0.13 (p = 0.29)).</p></div><div><h3>Conclusion</h3><p>DAS can reliably demonstrate dynamic aspects of the supraspinatus in RCT patients, which have been lacked in static imaging assessments as MRI.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"2 1","pages":"Article 100042"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949668324000107/pdfft?md5=2b18f06a5880059d3fbe57ce283dae2b&pid=1-s2.0-S2949668324000107-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140351049","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 relationships among knee and patella alignments, body mass index, quadriceps, and knee adduction moments in healthy young females","authors":"Koun Yamauchi ,&nbsp;Remi Fujita ,&nbsp;Manato Kameyama ,&nbsp;Chisato Kato ,&nbsp;Takayuki Kato ,&nbsp;Susumu Ota","doi":"10.1016/j.wfumbo.2024.100044","DOIUrl":"10.1016/j.wfumbo.2024.100044","url":null,"abstract":"<div><h3>Objective</h3><p>To determine the relationships among knee and patella alignments, BMI, quadriceps, and knee adduction moments, which are associated with knee osteoarthritis, in healthy people.</p></div><div><h3>Methods</h3><p>In 60 young females, intercondylar distances normalized by body height, Q-angle, and BMI were assessed. The ratios of individual muscle:quadriceps thicknesses measured using ultrasonography were calculated. Correlations between these parameters were evaluated. Ten subjects were selected from the VALGUS, mild VARUS, or severe VARUS knee groups (&lt;1.5 %, 1.5 %≤normalized intercondylar distance&lt;2.0 %, and 2.0 %≤, respectively). The external knee adduction moments measured by three-dimensional gait analysis were compared among the 3 groups, and the correlations with BMI, the Q-angle, and the individual quadriceps thickness ratios were evaluated for each of the 3 groups.</p></div><div><h3>Results</h3><p>The normalized intercondylar distance and Q-angle increased as the vastus medialis:quadriceps thickness ratio increased (r = 0.29 and r = 0.28, respectively), while BMI increased as the vastus medialis:quadriceps thickness ratio decreased (rs = −0.59) and the rectus femoris:quadriceps thickness ratio increased (rs = 0.34). The knee adduction moment in the severe VARUS was greatest (effect size = 2.1 versus the VALGUS; effect size = 1.7 versus the mild VARUS); however, the knee adduction moment increased as the vastus medialis:quadriceps thickness ratio decreased (r = −0.68) and the rectus femoris:quadriceps thickness ratio increased (r = 0.66) in the mild VARUS, whereas the knee adduction moment increased as the Q-angle decreased in the severe VARUS (rs = −0.83).</p></div><div><h3>Conclusion</h3><p>The vastus medialis:quadriceps thickness ratio was related to knee and patellar alignment and BMI. The mechanism by which the knee adduction moment is reduced differs according to the degree of knee alignment.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"2 1","pages":"Article 100044"},"PeriodicalIF":0.0,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949668324000120/pdfft?md5=94da8cb96c9c990cb9a5cdb92faf0574&pid=1-s2.0-S2949668324000120-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140763341","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":"Pitfalls in sonographic evaluation of placenta accreta spectrum","authors":"Anne Kennedy ,&nbsp;April Griffith ,&nbsp;Brett Einerson ,&nbsp;Paula J. Woodward","doi":"10.1016/j.wfumbo.2023.100016","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2023.100016","url":null,"abstract":"<div><p>Placenta accreta spectrum (PAS) is a serious complication of pregnancy. Preoperative diagnosis improves outcome for both mother and infant therefore it is critical that obstetric imagers are aware of the signs of the disease and know how to avoid pitfalls in diagnosis. This article reviews and illustrates the sonographic signs that are most helpful in detection of PAS and provides tips on avoiding pitfalls in diagnosis.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100016"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49726923","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":"Differences in ultrasound elevational beam width (slice thickness) between popular handheld devices","authors":"Harm J. Scholten ,&nbsp;Gert Weijers ,&nbsp;Marco de Wild ,&nbsp;Hendrikus H.M. Korsten ,&nbsp;Chris L. de Korte ,&nbsp;R. Arthur Bouwman","doi":"10.1016/j.wfumbo.2023.100009","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2023.100009","url":null,"abstract":"<div><h3>Background</h3><p>Handheld ultrasound devices are increasingly used by medical professionals for bedside ultrasound-guided interventions. Especially for vascular access procedures, the width of the imaging plane, known as the slice thickness or elevational beam width is a prominent source for misinterpretation. A wide slice thickness can lead to the interpretation that 2 objects (i.e. needle and vessel) are on the same plane while in fact they are not and thereby negatively influencing the performance of in-plane ultrasound-guided interventions. Therefore, the beam profiles of three popular handheld US devices are tested and compared to a conventional US device.</p></div><div><h3>Methods</h3><p>The GE VScan, Philips Lumify and Butterfly IQ ​+ ​are tested using a slice phantom to determine the slice thickness. For comparison, a Philips Affiniti machine was investigated. Both linear and curved array settings were analyzed. In a slice phantom, a diffuse scattering plane at an angle of exactly 45° is scanned. For each imaging depth, the vertical height of the imaged rectangle corresponds to the slice thickness at that depth.</p></div><div><h3>Main results</h3><p>For the linear array transducers, the focus depth ranges from 1.5 to 3.5 cm. At the focus depth, all transducers have a reasonable slice thickness of approximately 1 mm. More superficially, the slice thickness varies between 1 and 4 mm. The curved array probes have larger focus depths, ranging from 2.7 to 7.3 cm. The slice thickness at focus depth varies between 1.4 and 3.8 mm, but at 2 cm depth is even more than 5 mm.</p></div><div><h3>Conclusions</h3><p>The slice thickness of handheld ultrasound transducers varies between the different devices, and can be suboptimal for superficial in-plane ultrasound-guided interventions. The larger slice thickness of the curved array settings may complicate in-plane guidance. Handheld ultrasound users should be aware of the beam characteristics of their devices to optimize guidance for interventions.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100009"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49733668","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":"Development and interobserver reliability of a rating scale for lung ultrasound pathology in lower respiratory tract infection","authors":"Cristiana Baloescu ,&nbsp;Alvin Chen ,&nbsp;Nikolai Schnittke ,&nbsp;Bryson Hicks ,&nbsp;Meihua Zhu ,&nbsp;Matt Kaili ,&nbsp;Jeffrey Shupp ,&nbsp;Daniela K.I. Chan ,&nbsp;Laurie Malia ,&nbsp;Di Coneybeare ,&nbsp;Kenton Gregory ,&nbsp;David Kessler ,&nbsp;Balasundar Raju ,&nbsp;Christopher L. Moore","doi":"10.1016/j.wfumbo.2023.100006","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2023.100006","url":null,"abstract":"<div><h3>Objectives</h3><p>The purpose of this study was to develop a severity rating scale for lung ultrasound pathology in lower respiratory tract infection based on multicenter expert consensus, and to test inter-rater reliability.</p></div><div><h3>Methods</h3><p>Ten point-of-care ultrasound experts from three academic institutions developed the scale iteratively through literature review, expert opinion, and pilot testing. Clips were prospectively collected from adults suspected of COVID-19 using a 14-zone scanning protocol. Blinded reviewers independently rated four data subsets. The rating scale was refined through eight consensus-building discussions reviewing challenging cases from the first three subsets. The final scale consisted of a set of ordinal scores from 0 to 4, for five sonographic findings: B-lines, pleural line abnormalities, consolidations, pleural effusions, and overall lung aeration. Ratings from the fourth subset were analyzed to determine reliability based on intraclass correlation coefficient (ICC). A total of 11,126 cine clips from 220 patients were acquired.</p></div><div><h3>Discussion</h3><p>After excluding uninterpretable clips, the test dataset contained 81 clips and yielded an average ICC of 0.70 across the five sonographic findings (0.76 for B-lines, 0.52 for pleural line abnormalities, 0.71 for consolidations, 0.80 for pleural effusions, and 0.70 for overall lung aeration). Improvements in agreement were observed with each successive review session and dataset rating.</p></div><div><h3>Conclusion</h3><p>The lung ultrasound severity scale established by multicenter expert consensus achieved moderate to good inter-rater reliability. The scale could be used clinically to standardize assessment of lower respiratory tract infection and in future studies to develop methods for automated interpretation of lung ultrasound pathology.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100006"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49734254","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":"Survey on how Australian rheumatologists use musculoskeletal ultrasound (MSUS), including challenges and unmet needs","authors":"Zoe Brown ,&nbsp;Fredrick Joshua ,&nbsp;Helen Keen ,&nbsp;Anita Lee","doi":"10.1016/j.wfumbo.2023.100028","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2023.100028","url":null,"abstract":"<div><h3>Objective</h3><p>Worldwide there is increasing use of musculoskeletal ultrasound (MSUS) in clinical practice, particularly by rheumatologists. Despite reported high levels of interest in the use of MSUS, lack of education and experience are often reported as barriers to rheumatologists performing MSUS in clinical practice. To evaluate current MSUS practices in Australia, we undertook a survey of rheumatologists who are current members of an Australian MSUS special interest group.</p></div><div><h3>Methods</h3><p>Descriptive and summary statistics of responses to a web-based survey to rheumatologists who had attended a workshop with the Australian Musculoskeletal Imaging Special Interest Group (AMISIG) were undertaken.</p></div><div><h3>Results</h3><p>Of thirty-six respondents, 97.2 % reported using MSUS as part of clinical care, and more than a quarter also use MSUS for research and teaching. The most frequent indication for MSUS use in 94.4 % of clinicians was for early diagnosis of rheumatic diseases, followed by monitoring response to treatment. Barriers to use of MSUS were identified, including time constraints, costs and lack of training post courses and experience. To support MSUS use in Australia, respondents nominated more “hands-on” supervised training courses and supervision of advanced trainees.</p></div><div><h3>Conclusion</h3><p>MSUS use by surveyed Australian rheumatologists is most frequently to make an early diagnosis of rheumatic diseases as well as in monitoring response to treatments, in research and in teaching activities. Australian clinicians identified that increased clinical education in MSUS, particularly for rheumatology trainees, was needed.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100028"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949668323000289/pdfft?md5=170b032f5667aa2e8c683a5d349ebc34&pid=1-s2.0-S2949668323000289-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138396763","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":"Ultrasound characteristics of Hashimoto’s thyroiditis in the subclinical stages of the disease","authors":"Nikolaos Angelopoulos ,&nbsp;Dimitrios G. Goulis ,&nbsp;Ioannis Chrisogonidis ,&nbsp;Evanthia Giannoula ,&nbsp;Ioannis Iakovou","doi":"10.1016/j.wfumbo.2023.100022","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2023.100022","url":null,"abstract":"<div><h3>Objective</h3><p>To investigate the prognostic value of indicators from b-mode ultrasound, color Doppler ultrasound, and strain elastography of the thyroid gland in the diagnosis of Hashimoto's thyroiditis (HT).</p></div><div><h3>Methods</h3><p>In 70 euthyroidal patients with HT, demographic characteristics, serum thyroid profile and ultrasound parameters, including thyroid gland size, vascularity and stiffness (elastography strain index) of the parenchyma, and flow indices of the superior and inferior thyroid artery were recorded. The control group consisted of 70 age and weight matched euthyroid individuals with negative anti-thyroid antibodies (anti-TPO and anti-Tg).</p></div><div><h3>Results</h3><p>A significant difference was observed between the two groups in total thyroid size (ml, median ± standard deviation, SD) 7.86 ± 2.9 in HT vs. 6.35 ± 2.7 ml in controls, p = 0.003) and parenchymal vascularity which was increased in patients with HT (p &lt; 0.001). Tissue strain index was higher in the HT group but without reaching statistical significance In logistic regression, thyroid size (odds ratio 1.20, 95% confidence interval: 1.02–1.41, p = 0.022) demonstrated significant prognostic value for the presence of HT. No differences were found between the two groups, regarding the peak systolic velocity (PSV), end-diastolic volume (EDV), pulsatility index (PI) and resistive index (RI) values of the thyroid arteries. In the ROC analysis (AUC 0.653, p = 0.002), a thyroid size &gt;7.3 ml exhibited sensitivity of 61.43% and specificity of 72.6% for the diagnosis of HT.</p></div><div><h3>Conclusion</h3><p>Patients with HT exhibit larger thyroid size and increased intrathyroidal vascularity on ultrasound prior to the manifestation of hypothyroidism compared to the healthy population. Flow indices of the superior thyroid artery do not have prognostic value in the diagnosis of HT.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100022"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49712288","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":"Intraoperative contrast-enhanced ultrasound evaluates the hemodynamic change of cerebral revascularization in adult moyamoya disease: Preliminary results","authors":"Xiandi Zhang ,&nbsp;Wei Ni ,&nbsp;Yinhui Deng ,&nbsp;Yuanxin Xie ,&nbsp;Yu Lei ,&nbsp;Jiabin Su ,&nbsp;Chao Gao ,&nbsp;Liqiong Zhang ,&nbsp;Jinhua Yu ,&nbsp;Yuxiang Gu ,&nbsp;Hong Ding","doi":"10.1016/j.wfumbo.2023.100025","DOIUrl":"10.1016/j.wfumbo.2023.100025","url":null,"abstract":"<div><h3>Purpose</h3><p>This study aimed to determine the feasibility of using intraoperative contrast-enhanced ultrasound (CEUS) to assess subcortical hemodynamic changes in moyamoya disease patients who had undergone combined revascularization. It also aimed to investigate the correlation between quantitative CEUS parameters and post-operative neural functional recovery.</p></div><div><h3>Methods</h3><p>This study included seventeen patients diagnosed with moyamoya disease, confirmed through cerebral angiography, who underwent combined revascularization. Intraoperative subcortical hemodynamics were assessed using CEUS before and immediately after cerebrovascular bypass. Hemodynamic parameters were calculated by analyzing the time-intensity curve generated from a defined region of interest in each CEUS video. Post-operative neurological symptoms, computed tomography records, and short-term modified Rankin Scale (mRS) scores were also recorded.</p></div><div><h3>Results</h3><p>During the post-operative follow-up, 29.4 % of the patients experienced new neurological symptoms, including epilepsy, dyskinesia, and language impairment. Overall, CEUS quantitative parameters suggested that blood supply improved after surgery. And certain hemodynamic parameters exhibited a stronger correlation with the mRS scores, with correlation coefficients ranging up to 0.73 (<em>p</em> &lt; 0.01). However, no statistically significant differences were observed among the different functional groups. The advanced parameter of wash-out intensity (<span><math><mrow><mi>δ</mi></mrow></math></span> WOI), which signifies the rate of change at the point when blood flow is completely washed out, demonstrated a significant difference between two functional groups (<em>p</em> = 0.02) and exhibited a correlation with mRS scores (correlation coefficients: 0.55, <em>p</em> = 0.02).</p></div><div><h3>Conclusions</h3><p>This preliminary study suggests that quantitative intraoperative CEUS can measure subcortical hemodynamic changes. It provides a novel non-invasive method that may predict the short-term post-operative neural functional recovery of combined revascularization in moyamoya disease patients.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100025"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949668323000253/pdfft?md5=c78038aef31638604a0df3095b2143e0&pid=1-s2.0-S2949668323000253-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135765654","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":"Feasibility of teleoperated robotic echocardiography – A pilot study","authors":"H. Solvin ,&nbsp;S. Sajadi ,&nbsp;M. Lippert ,&nbsp;R. Massey ,&nbsp;H. Holmstrøm ,&nbsp;O. Elle ,&nbsp;K. Mathiassen ,&nbsp;H. Brun","doi":"10.1016/j.wfumbo.2023.100018","DOIUrl":"https://doi.org/10.1016/j.wfumbo.2023.100018","url":null,"abstract":"<div><h3>Purpose</h3><p>Echocardiography is dependent on highly specialized healthcare professionals. Teleoperated examinations could provide higher availability of specialized care for patients living in rural areas. The objective of this study was to evaluate the feasibility of a teleoperated robotic echocardiography system.</p></div><div><h3>Methods</h3><p>Twenty-three healthy volunteers underwent teleoperated echocardiography, compared to standard bedside echocardiography. Examination time, image quality, ability to assess cardiac structures, measurements of left ventricular fractional shortening and blood flow velocities were compared. Image quality was rated on a scale from 0 to 3.</p></div><div><h3>Results</h3><p>Approximately 90% of robotically acquired images were rated as medium quality or better and approximately 80% of cardiac structures were evaluated as assessable by at least one evaluator. Mean image quality was lower for robotic (1.6 ± 0.3) compared to standard clinical examinations (2.5 ± 0.4) (p = 0.001). Left ventricular fractional shortening from the robotic examinations was 2.2%, p = 0.160 (absolute value) lower compared to the reference and showed a variation coefficient of 19%. The calculated Doppler insonation angles deviated from the reference by more than 25° for three of four blood flow velocity measurements. The teleoperated examinations had a mean examination time of 26.4 min and were 1.9 times longer compared to the reference (p = 0.001).</p></div><div><h3>Conclusion</h3><p>This feasibility study of teleoperated echocardiography shows promising results for the presented system. Clinically satisfactory imaging, particularly measurements of dimension and velocities, requires further development of the system.</p></div>","PeriodicalId":101281,"journal":{"name":"WFUMB Ultrasound Open","volume":"1 2","pages":"Article 100018"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49726936","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}