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    Development of an artificial intelligence powered software for automated analysis of skeletal muscle ultrasonography
    (Springer Science and Business Media LLC, 2025-04-29)
    Zoe Calulo Rivera
    ;
    GONZALEZ SEGUEL, FELIPE ANDRES  
    ;
    Arimitsu Horikawa-Strakovsky
    ;
    Catherine Granger
    ;
    Aarti Sarwal
      1Scopus© Citations 11
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    Ultrasound-Guided Transfemoral Access for Coronary Procedures: A Pooled Learning Curve Analysis From the FAUST and UNIVERSAL Trials
    (2024)
    Marc-André d’Entremont
    ;
    Arnold H. Seto
    ;
    Sulaiman Alrashidi
    ;
    Omar Alansari
    ;
    Bradley Brochu
    <jats:sec> <jats:title>BACKGROUND:</jats:title> <jats:p>The learning curve for new operators performing ultrasound-guided transfemoral access (TFA) remains uncertain.</jats:p> </jats:sec> <jats:sec> <jats:title>METHODS:</jats:title> <jats:p>We performed a pooled analysis of the FAUST (Femoral Arterial Access With Ultrasound Trial) and UNIVERSAL (Routine Ultrasound Guidance for Vascular Access for Cardiac Procedures) trials, both multicenter randomized controlled trials of 1:1 ultrasound-guided versus non–ultrasound-guided TFA for coronary procedures. Outcomes included the composite of major bleeding or vascular complications and successful common femoral artery cannulation. Participants were stratified by the operators’ accrued case volume. We used adjusted repeated-measurement logistic regression, with random intercepts for operator clustering, for comparison against the non–ultrasound-guided TFA group and to model the learning curve.</jats:p> </jats:sec> <jats:sec> <jats:title>RESULTS:</jats:title> <jats:p>The FAUST and UNIVERSAL trials randomized a total of 1624 patients, of which 810 were randomized to non–ultrasound-guided TFA and 814 to ultrasound-guided TFA (cases 1–10, 391; 11–20, 183; and &gt;20, 240). Participants who had operators who performed &gt;20 ultrasound-guided TFAs had a decreased risk for the primary end point (5/240 [2.1%] versus 64/810 [7.9%]; adjusted odds ratio, 0.26 [95% CI, 0.09–0.61]) compared with non–ultrasound-guided TFA. Operators who performed &gt;20 ultrasound-guided procedures had increased odds of successfully cannulating the common femoral artery (224/246 [91.1%] versus 327/382 [85.6%]; adjusted odds ratio, 1.76 [95% CI, 1.08–2.89]) compared with non–ultrasound-guided TFA. The learning curve plots demonstrated growing competence with increasing accrued cases.</jats:p> </jats:sec> <jats:sec> <jats:title>CONCLUSIONS:</jats:title> <jats:p>New operators should perform at least 20 ultrasound-guided TFA to decrease access site complications and increase proper cannulation compared with non–ultrasound-guided TFA. Additional accrued cases may lead to increased proficiency. Training programs should consider these findings in the transradial era.</jats:p> </jats:sec>
      1Scopus© Citations 3
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    Imaging in lingual abscess: a case report
    (2024)
    Oscar Campos
    ;
    Ricardo Aris
    ;
    Francisca Santorcuato
    ;
    WHITTLE PINTO, CAROLINA  
    ;
    Liberto Figueroa
    <jats:title>Abstract</jats:title><jats:sec> <jats:title>Background</jats:title> <jats:p>Lingual abscess corresponds to an infection that manifests itself as a painful swelling in the tongue with purulent material inside. This is a rare entity and the information available in the literature is limited and based on clinical case reports. Therefore, the diagnosis, etiology, clinical manifestations, and treatment are not fully defined.</jats:p> </jats:sec><jats:sec> <jats:title>Case presentation</jats:title> <jats:p>The aim of this work was to describe the imaging of a case of lingual abscess, focusing on imaging evaluation using ultrasound and computed tomography (CT), and comparing the diagnostic utility of both modalities in smaller lingual abscesses. This case was treated with antibiotics and adequate drainage was performed, with good evolution.</jats:p> </jats:sec><jats:sec> <jats:title>Conclusions</jats:title> <jats:p>Tongue abscess is a rare pathology due to the various mechanisms that the tongue has to avoid infections; however, it is a diagnosis that we must consider. CT may be sufficient to diagnose it on imaging, but in smaller lesions, ultrasound with a high-frequency transducer provides more information.</jats:p> </jats:sec>
      1
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    Scopus© Citations 1  3
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    Dilated optic nerve sheath by ultrasound predicts mortality among patients with acute intracerebral hemorrhage
    (2023)
    Francisco Antunes Dias
    ;
    Maria Clara Zanon Zotin
    ;
    Frederico Fernandes Alessio-Alves
    ;
    Rui Kleber do Vale Martins Filho
    ;
    Clara Monteiro Antunes Barreira
    <jats:title>Abstract</jats:title><jats:p> Background Intracerebral hemorrhage (ICH) is a deadly disease and increased intracranial pressure (ICP) is associated with worse outcomes in this context.</jats:p><jats:p> Objective We evaluated whether dilated optic nerve sheath diameter (ONSD) depicted by optic nerve ultrasound (ONUS) at hospital admission has prognostic value as a predictor of mortality at 90 days.</jats:p><jats:p> Methods Prospective multicenter study of acute supratentorial primary ICH patients consecutively recruited from two tertiary stroke centers. Optic nerve ultrasound and cranial computed tomography (CT) scans were performed at hospital admission and blindly reviewed. The primary outcome was mortality at 90-days. Multivariate logistic regression, ROC curve, and C-statistics were used to identify independent predictors of mortality.</jats:p><jats:p> Results Between July 2014 and July 2016, 57 patients were evaluated. Among those, 13 were excluded and 44 were recruited into the trial. Their mean age was 62.3 ± 13.1 years and 12 (27.3%) were female. On univariate analysis, ICH volume on cranial CT scan, ICH ipsilateral ONSD, Glasgow coma scale, National Institute of Health Stroke Scale (NIHSS) and glucose on admission, and also diabetes mellitus and current nonsmoking were predictors of mortality. After multivariate analysis, ipsilateral ONSD (odds ratio [OR]: 6.24; 95% confidence interval [CI]: 1.18–33.01; p = 0.03) was an independent predictor of mortality, even after adjustment for other relevant prognostic factors. The best ipsilateral ONSD cutoff was 5.6mm (sensitivity 72% and specificity 83%) with an AUC of 0.71 (p = 0.02) for predicting mortality at 90 days.</jats:p><jats:p> Conclusion Optic nerve ultrasound is a noninvasive, bedside, low-cost technique that can be used to identify increased ICP in acute supratentorial primary ICH patients. Among these patients, dilated ONSD is an independent predictor of mortality at 90 days.</jats:p>
      3
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    “Truffle sign”. A suspicious malignant pattern of lymphadenopathies in children observed on ultrasound. Preliminary study
    (2023)
    L. Pérez-Marrero
    ;
    M. F. Norambuena
    ;
    C. Whittle
    ;
    I. M. Fuentealba
    ;
    B. Spralja
      4Scopus© Citations 4
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      1Scopus© Citations 3  1
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      1Scopus© Citations 2  2
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    Terapia mínimamente invasiva para el manejo de un hematoma subcapsular hepático en un recién nacido
    (2021)
    María Santos C.
    ;
    Gian Paolo Zamboni T.
    ;
    Daniel Hasson
    ;
    Marina Poblete S.
    ;
    Patricio Vargas H.
    <jats:p>Objetivo: Describir una alternativa innovadora a la laparotomía exploradora en un recién nacido con un hematoma hepático subcapsular secundario a la inserción de un catéter venoso umbilical.Caso Clínico: Paciente de pretérmino con antecedentes de enfermedad de membrana hialina, hipertensión pulmonar y ductus arterioso persistente amplio, que requirió ventilación mecánica y uso de drogas vasoactivas. Se instalaron catéteres umbilicales, fueron controlados con radiografía de abdomen anteroposterior, en la que impresionaron estar adecuadamente posicionados. Evolucionó con mayor requerimiento de drogas vasoactivas, palidez de pared abdominal y distensión abdominal. Bajo ecografía se diagnosticó un hematoma hepático subcapsular contenido, sin signos de sangrado activo, por lo que se decidió conducta expectante. Aumentó requerimiento de drogas vasoactivas y presentó caída de hematocrito. La ecografía de control encontró un hematoma subcapsular de mayor tamaño, abundante liquido perihepático y se confirmó la posición intraparenquimatosa de la punta del catéter umbilical. Se realizó embolización endovascular a través del catéter umbilical con Gelita®, logrando oclusión del trayecto capsular. La ecografía de control mostró disminución del hematoma.Conclusiones: El uso de embolización por angiografía no es comúnmente utilizado en urgencias pediátricas. Es un procedimiento con menos comorbilidades y complicaciones que la laparotomía exploradora, por lo que debería ser una terapia de primera línea en pacientes como el presentado. Las limitaciones para su realización rutinaria son la disponibilidad de pabellón de angiografía y la presencia de un equipo entrenado de radiología intervencionista.</jats:p>
    Scopus© Citations 1  1
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    Angiomiolipoma hepático epitelioide: reporte de un caso
    (2022)
    Oscar Ahumada Espinoza
    ;
    Juan Hepp Kuschel
    ;
    Marcela Gallegos Angulo
    ;
    Giancarlo Schiappacasse Faundes
      1Scopus© Citations 2