Radiologia最新文献

{"title":"Radiomic-based nonlinear supervised learning classifiers on non-contrast CT to predict functional prognosis in patients with spontaneous intracerebral hematoma","authors":"E. Serrano ,&nbsp;J. Moreno ,&nbsp;L. Llull ,&nbsp;A. Rodríguez ,&nbsp;C. Zwanzger ,&nbsp;S. Amaro ,&nbsp;L. Oleaga ,&nbsp;A. López-Rueda","doi":"10.1016/j.rxeng.2023.08.002","DOIUrl":"https://doi.org/10.1016/j.rxeng.2023.08.002","url":null,"abstract":"<div><h3>Purpose</h3><p>To evaluate if nonlinear supervised learning classifiers based on non-contrast CT can predict functional prognosis at discharge in patients<span> with spontaneous intracerebral hematoma.</span></p></div><div><h3>Methods</h3><p><span>Retrospective, single-center, observational analysis of patients with a diagnosis of spontaneous intracerebral hematoma confirmed by non-contrast CT between January 2016 and April 2018. Patients with HIE &gt; 18 years and with TCCSC performed within the first 24 h of symptom onset were included. Patients with secondary spontaneous intracerebral hematoma and in whom radiomic variables were not available were excluded. Clinical, demographic and admission variables were collected. Patients were classified according to the </span>Modified Rankin Scale (mRS) at discharge into good (mRS 0−2) and poor prognosis (mRS 3–6). After manual segmentation of each spontaneous intracerebral hematoma, the radiomics variables were obtained. The sample was divided into a training and testing cohort and a validation cohort (70−30% respectively). Different methods of variable selection and dimensionality reduction were used, and different algorithms were used for model construction. Stratified 10-fold cross-validation were performed on the training and testing cohort and the mean area under the curve (AUC) were calculated. Once the models were trained, the sensitivity of each was calculated to predict functional prognosis at discharge in the validation cohort.</p></div><div><h3>Results</h3><p>105 patients with spontaneous intracerebral hematoma were analyzed. 105 radiomic variables were evaluated for each patient. P-SVM, KNN-E and RF-10 algorithms, in combination with the ANOVA variable selection method, were the best performing classifiers in the training and testing cohort (AUC 0.798, 0.752 and 0.742 respectively). The predictions of these models, in the validation cohort, had a sensitivity of 0.897 (0.778−1;95%CI), with a false-negative rate of 0% for predicting poor functional prognosis at discharge.</p></div><div><h3>Conclusion</h3><p>The use of radiomics-based nonlinear supervised learning classifiers are a promising diagnostic tool for predicting functional outcome at discharge in HIE patients, with a low false negative rate, although larger and balanced samples are still needed to develop and improve their performance.</p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138474604","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":"Percutaneous cementoplasty of periprosthetic aseptic hip loosening","authors":"X. Tomas Batlle ,&nbsp;J.C. Soler-Perromat ,&nbsp;J. Blasco Andaluz ,&nbsp;J.A. Fernández-Valencia","doi":"10.1016/j.rxeng.2023.06.004","DOIUrl":"https://doi.org/10.1016/j.rxeng.2023.06.004","url":null,"abstract":"<div><p><span><span><span>Progressive population aging and improved healthcare have led to a significant increase in patients with hip </span>arthroplasty (HA). In this patient group, the proportion of those who require a new arthroplasty (prosthetic replacement or secondary revision of the hip), has also increased. For this subgroup of patients in whom surgical </span>prosthetic replacement<span> should be considered but is contraindicated, a new technique has been developed since 2010: percutaneous injection of periprosthetic cement under fluoroscopic or CT control (\"femoroplasty; FMP\") as an alternative and less invasive treatment compared to surgery to stabilize the HA without replacing it, with excellent results on patients' </span></span>quality of life. In this brief communication, we describe our positive experience regarding FMP, which we have performed for the first time in Spain on four patients (age range between 74–83 years, 2 female and 2 male patients, 3 right HA and 1 left HA), without post-complications. We highlight both the relative simplicity of this technique, which can be incorporated into radiological intervention even in regional hospitals, and the significant clinical improvement observed in all patients. In conclusion, we hope that our experience can contribute to the increased adoption of this innovative technique within the scientific community.</p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138474610","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":"Placenta accreta spectrum in early and late pregnancy from an imaging perspective. A scoping review","authors":"B. Moradi ,&nbsp;J. Azadbakht ,&nbsp;S. Sarmadi ,&nbsp;M. Gity ,&nbsp;E. Shirali ,&nbsp;M. Azadbakht","doi":"10.1016/j.rxeng.2023.02.001","DOIUrl":"10.1016/j.rxeng.2023.02.001","url":null,"abstract":"<div><p>Placenta accreta<span><span> spectrum (PAS) disorders (with increasing order of the depth of invasion: accreta, increta, percreta) are quite challenging for the purpose of diagnosis and treatment<span><span>. Pathological examination or imaging evaluation are not very dependable when considered as stand-alone diagnostic tools. On the other hand, timely diagnosis is of great importance, as maternal and fetal mortality drastically increases if patient goes through the third phase of delivery in a not well-suited facility. A multidisciplinary approach for diagnosis (incorporating clinical, imaging, and pathological evaluation) is mandatory, particularly in complicated cases. For imaging evaluation, the diagnostic modality of choice in most scenarios is ultrasound (US) exam; patients are referred for MRI when US is equivocal, inconclusive, or not visualizing </span>placenta properly. Herewith, we review the reported US and MRI features of PAS disorders (mainly focusing on MRI), going over the normal placental imaging and imaging pitfalls in each section, and lastly, covering the imaging findings of PAS disorders in the </span></span>first trimester<span> and cesarean section pregnancy (CSP).</span></span></p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128622586","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":"The current situation of Radiology training in medical studies in Spain","authors":"F. Sendra Portero ,&nbsp;D. Domínguez Pinos ,&nbsp;M. Souto Bayarri","doi":"10.1016/j.rxeng.2023.07.003","DOIUrl":"https://doi.org/10.1016/j.rxeng.2023.07.003","url":null,"abstract":"<div><p>Radiology<span> is now an essential part of Clinical Medicine<span>, but undergraduate training does not reflect its importance in medical practice. In the current course, there are 46 medical schools in our country. According to the information published on the institutional websites, the study plans are very different in terms of the presence of Diagnostic Radiology and the organization of teaching. The estimated number of teaching hours in diagnostic radiology (mean ± standard deviation) is 61.3 ± 22.2 h (range from 26 h to 137 h). There is a great shortage of clinical university professors, and a generational change is essential. The current situation poses various challenges, including adapting to new teaching methods and technologies and promoting the presence of radiology in medical study plans, paying special attention to hospital practices, the Final Degree Project (FDP) and the Objective Structured Clinical Examination (OSCE).</span></span></p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138473857","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":"Esophageal tumors: The keys to diagnosis by pneumo-computed tomography","authors":"F. Conca ,&nbsp;N. Rosso ,&nbsp;R. López Grove ,&nbsp;L. Savluk ,&nbsp;J.P. Santino ,&nbsp;M. Ulla","doi":"10.1016/j.rxeng.2023.03.004","DOIUrl":"10.1016/j.rxeng.2023.03.004","url":null,"abstract":"<div><h3>Objective</h3><p><span>To review and describe the most characteristic radiological findings of the most frequent </span>esophageal tumor lesions, with emphasis on the esophago-gastric distention technique pneumo-computed tomography performed in our institution. To know the main advantage of this distension technique.</p></div><div><h3>Conclusion</h3><p><span>Malignant tumor lesions (predominantly squamous cell carcinoma in the mid esophagus and adenocarcinoma in the distal esophagus) present as asymmetric wall thickening, mucosal irregularity, or mass extending into adjacent organs with lymph node involvement. Benign tumors (mainly </span>leiomyoma<span> being the most frequent and others such as lipoma) present as endoluminal growth, with defined borders and homogeneous attenuation. Post-contrast enhancement is scarce or moderate. The technique of computed tomography pneumotomography technique achieves an additional distension of the esophageal lumen in all cases. It allows delimiting the superior and inferior borders of the lesions, helping the surgeon to define the therapeutic strategy.</span></p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135664992","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":"Inter-observer agreement on levels of evidence in radiology articles","authors":"C. García-Villar ,&nbsp;J.M. Plasencia-Martínez ,&nbsp;M.T. Gutiérrez-Amares ,&nbsp;J.M. García-Santos","doi":"10.1016/j.rxeng.2023.08.001","DOIUrl":"10.1016/j.rxeng.2023.08.001","url":null,"abstract":"<div><p><span>Levels of evidence (LE) are established through a hierarchical classification of studies according to their design. At present, there are many heterogeneous LE classifications, and this hampers their applicability. Our study aims to identify which LE classification has the best interobserver concordance for radiology<span> articles. For this purpose, an interobserver agreement analysis were performed on 105 original articles applying two NE scales (Oxford Center of Evidence Based Medicine<span> (OCEBM) y National Health and Medical Research Council (NHMRC)). The inter-rater agreement of the LE assigned after reading the abstracts was good when using the OCEBM scale (</span></span></span><em>K</em> = 0.679), and somewhat lower with the NHMRC (<em>K</em> = 0.577 -moderate-). All differences were statistically significant (<em>P</em> &lt; .000). So, in conclusion, of the two scales analysed (OCEBM and NHMRC), the OCEBM led to the strongest level of inter-rater agreement.</p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136154004","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 MRI measurements of lateral recesses and foramina in degenerative lumbar segments in upright versus decubitus symptomatic patients","authors":"M. García Isidro,&nbsp;A. Ferreiro Pérez,&nbsp;M.S. Fernández López-Peláez,&nbsp;M. Moeinvaziri,&nbsp;P. Fernández García","doi":"10.1016/j.rxeng.2021.01.005","DOIUrl":"10.1016/j.rxeng.2021.01.005","url":null,"abstract":"<div><h3>Objective</h3><p>To evaluate differences in measurements of the lateral recesses and foramina in degenerative lumbar segments on MR images in symptomatic patients obtained with the patient standing versus lying down and to analyze the relationship between possible differences and patients’ symptoms.</p></div><div><h3>Material and methods</h3><p><span>We studied 207 disc levels in 175 patients aged between 17 and 75 years (median: 47 years) with low back pain. All patients underwent MRI in the decubitus position with their legs extended, followed by MRI in the standing position. We calculated the difference in the measurements of the lateral recesses (in mm) and in the foramina (area in mm</span>²<span> and smallest diameter in mm) obtained in the two positions. To eliminate the effects of possible errors in measurement, we selected cases in which the difference between the measurements obtained in the two positions was ≥10%; we used Student’s t-tests for paired samples to analyze the entire group and subgroups of patients according to age, sex, grade of disc degeneration, and postural predominance of symptoms.</span></p></div><div><h3>Results</h3><p>Overall, the measurements of the spaces were lower when patients were standing. For the lateral recesses, we observed differences ≥10% in 68 (33%) right recesses and in 65 (31.5%) left recesses; when patients were standing, decreases were much more common than increases (26% vs. 7%, respectively, on the right side and 24% vs. 7.5%, respectively, on the left side; p &lt; 0.005). For the foramina, decreases in both the area and in the smallest diameter were also more common than increases when patients were standing: on the right side, areas decreased in 23% and increased in 4%, and smallest diameters decreased in 20% and increased 6%; on the left side, areas decreased in 24% and increased in 4%, and smallest diameters decreased in 17% and increased in 8% (p &lt; 0.005). Considering the group of patients in whom the postural predominance of symptoms was known, we found significant differences in patients whose symptoms occurred predominantly or exclusively when standing, but not in the small group of patients whose symptoms occurred predominantly while lying. We found no differences between sexes in the changes in measurements of the recesses or foramina with standing. The differences between the measurements obtained in different positions were significant in patients aged &gt;40 years, but not in younger groups of patients. Differences in relation to the grade of disc degeneration were significant only in intermediate grades (groups 3–6 in the Griffith classification system).</p></div><div><h3>Conclusion</h3><p>MRI obtained with patients standing can show decreases in the lateral recesses and foramina related to the predominance of symptoms while standing, especially in patients aged &gt;40 years with Griffith disc degeneration grade 3–6, thus providing additional information in th","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49686886","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":"Chronic expanding hematoma","authors":"G. Serra del Carpio,&nbsp;M. Tapia Viñé,&nbsp;N. Torena,&nbsp;D. Bernabeu Taboada","doi":"10.1016/j.rxeng.2023.09.006","DOIUrl":"10.1016/j.rxeng.2023.09.006","url":null,"abstract":"<div><p>Chronic expansive hematoma (CEH) is a rare lesion, characterized by the persistence and increase in size of an hematoma for a period greater than one month since the initial hemorrhage. The clinical importance of this pathology is due to the fact that it can simulate malignant soft tissue neoplasms<span><span>, both clinically as a result of its progressive growth and radiologically for its findings in imaging studies. This article will review three cases of CEH in different scenarios, explaining the radiological findings in different </span>imaging techniques such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), and PET-CT.</span></p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49686884","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":"Granular cell tumor of soft tissues: MR findings","authors":"G. Iglesias-Hidalgo ,&nbsp;A. Lopez-Maseda ,&nbsp;L. Zaldumbide-Dueñas ,&nbsp;B. Canteli-Padilla","doi":"10.1016/j.rxeng.2022.12.008","DOIUrl":"10.1016/j.rxeng.2022.12.008","url":null,"abstract":"<div><p>Granular cell tumors<span> (GrCT) are histologically unique neoplasms that often manifest as painless solitary nodules located in the dermis or submucosal tissue. In this article we analyze the radiologic features of this type of tumor in five patients by magnetic resonance imaging (MRI), analyzing morphologic and signal characteristics. MR imaging findings were similar to other publications and we demonstrate low ADC values in our series.</span></p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49686888","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":"Radiographic evaluation of the bicipital groove morphology does not predict intraarticular changes in the long head of biceps tendon","authors":"A. Cardoso ,&nbsp;J.N. Ferreira ,&nbsp;R. Viegas ,&nbsp;P. Amaro ,&nbsp;P. Gamelas ,&nbsp;R. Alonso ,&nbsp;L. Pires","doi":"10.1016/j.rxeng.2020.09.008","DOIUrl":"10.1016/j.rxeng.2020.09.008","url":null,"abstract":"<div><h3>Introduction and objectives</h3><p>This study aimed to examine the clinical utility of the radiographic evaluation of the bicipital groove in predicting long head of biceps tendon (LHBT) pathology.</p></div><div><h3>Material and methods</h3><p><span>A prospective study was conducted, and sixty consecutive patients proposed to shoulder arthroscopic surgery were selected. Before surgery, a radiographic evaluation was performed with a supine and a Fisk radiograph. Most supine radiographs (&gt;75%) were non-interpretable and were excluded from the study. As some Fisk radiographs (26.7%) were also non-interpretable, that left 44 interpretable radiographs in the study. These were measured for medial opening angle, total opening angle, width and depth of the bicipital groove. The radiographic measurements and the presence of LHBT pathology, as assessed at </span>arthroscopy, were correlated.</p></div><div><h3>Results</h3><p>Radiographic evaluation of the bicipital groove showed a mean medial opening angle of 53 ± 15° (23–90), a mean total opening angle of 80 ± 26° (30–135), a mean width of 10.3 ± 2.5 mm (6–19) and a mean depth of 4.1 ± 1.5 mm (1–8). Men had higher medial opening angle (60 vs 50°, p = 0.044) and wider grooves (11.9 vs 9.7 mm, p = 0.019). Twenty-five patients (56.8%) were found to have an abnormal LHBT. No correlation was found between the radiographic measurements and LHBT pathology. Only age was correlated with a LHBT lesion (61.8 vs 46.3 years, p &lt; 0.001).</p></div><div><h3>Conclusions</h3><p>Our results show that there is no correlation between radiographic morphologic evaluation of the bicipital groove and LHBT pathology.</p></div>","PeriodicalId":94185,"journal":{"name":"Radiologia","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49686890","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}