Imaging and Radiation Research最新文献_第5页

Imaging diagnostics of gynecological emergencies 妇科急诊影像诊断

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v3i1.1722

M. Wagner, T. Huisman, R. Kubik

引用次数: 0

Magnetic resonance imaging: Recent research on the biological impacts of static magnetic and high-frequency electromagnetic fields 磁共振成像:静磁场和高频电磁场对生物影响的最新研究

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v5i2.1757

B. Pophof, G. Brix

{"title":"Magnetic resonance imaging: Recent research on the biological impacts of static magnetic and high-frequency electromagnetic fields","authors":"B. Pophof, G. Brix","doi":"10.24294/irr.v5i2.1757","DOIUrl":"https://doi.org/10.24294/irr.v5i2.1757","url":null,"abstract":"Problem: in recent years, new studies have been published on biological effects of strong static magnetic fields and on thermal eﬀects of high-frequency electromagnetic fields as used in magnetic resonance imaging (MRI). Many of these studies have not yet been incorporated into current safety recommendations. Method: scientific publications from 2010 onwards on the biological effects of static and electromagnetic fields of MRI were searched and evaluated. Results: new studies confirm older work that has already described effects of static magnetic fields on sensory organs and the central nervous system accompanied by sensory perception. A new result is the direct effect of Lorentz forces on ionic currents in the semicircular canals of the vestibular organ. Recent studies on thermal effects of radiofrequency fields focused on the development of anatomically realistic body models and more accurate simulation of exposure scenarios. Recommendation for practice: strong static magnetic fields can cause unpleasant perceptions, especially dizziness. In addition, they can impair the performance of the medical personnel and thus potentially endanger patient safety. As a precaution, medical personnel should move slowly in the field gradient. High-frequency electromagnetic fields cause tissues and organs to heat up in patients. This must be taken into account in particular for patients with impaired thermoregulation as well as for pregnant women and newborns; exposure in these cases must be kept as low as possible.","PeriodicalId":153727,"journal":{"name":"Imaging and Radiation Research","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1970-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116880820","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}

引用次数: 0

Endoscopic ultrasound as a predictor of pathologic complete response in rectal cancercer 内镜超声作为直肠癌病理完全缓解的预测指标

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v5i1.1747

Melissa Jiménez-Morales, J. Alonso-Lárraga, J. G. de la Mora-Levy, Julio C Sánchez-del Monte, M. C. Manzano-Robleda, Armando Alonso-Martínez, F. M. Oña-Ortiz, M. Ramírez-Solís, A. Hernández-Guerrero

{"title":"Endoscopic ultrasound as a predictor of pathologic complete response in rectal cancercer","authors":"Melissa Jiménez-Morales, J. Alonso-Lárraga, J. G. de la Mora-Levy, Julio C Sánchez-del Monte, M. C. Manzano-Robleda, Armando Alonso-Martínez, F. M. Oña-Ortiz, M. Ramírez-Solís, A. Hernández-Guerrero","doi":"10.24294/irr.v5i1.1747","DOIUrl":"https://doi.org/10.24294/irr.v5i1.1747","url":null,"abstract":"The possibility of preoperative prediction of pathologic complete response in rectal cancer has been studied in order to identify patients who would respond to neoadjuvant therapy and to individualize therapeutic strategies. Endoscopic ultrasound of the rectum is an accurate method for the evaluation of local tumor and lymph node invasion. Objective: To evaluate the potential of endoscopic ultrasound as a predictor of complete pathological response to neoadjuvant treatment in patients with locally advanced rectal cancer. Material and methods: Retrospective study of patients with rectal cancer from January 2014 to December 2016. Results: We obtained a statistical association between T stage by endoscopic ultrasound and complete pathological response (p = 0.015). It is not so for N, sphincter involvement, circumferential involvement and maximum tumor thickness (p = 0.723, p = 0.510, p = 0.233 and p = 0.114, respectively). When multivariate logistic regression analysis was applied to assess the degree of inﬂuence of the predictor variables on pathologic response, none of these variables was associated with complete pathologic response. Conclusion: Prediction of pathologic complete response in rectal cancer has been considered as the crucial point upon which treatments for rectal cancer could be individualized. So far, no imaging method has been able to demonstrate efficacy in predicting complete pathologic response, and in turn there is no direct association between any endosonographic finding that can accurately predict it.","PeriodicalId":153727,"journal":{"name":"Imaging and Radiation Research","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1970-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131272220","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}

引用次数: 0

Structured reporting for magnetic resonance imaging of the prostate using PI-RADS 2.1 使用PI-RADS 2.1对前列腺磁共振成像进行结构化报告

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v5i2.1751

A. Hötker, O. Donati

引用次数: 0

Cardiac amyloidosis imaging 心脏淀粉样变影像学

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v5i1.1742

D. P. de Arenaza, S. Baratta, R. Campisi, M. Cerdá, Adela Aguirre, Eugenia Villanueva, A. Fernández, C. Belziti

引用次数: 0

Control chest x-ray in patients with asymptomatic posttraumatic pneumothorax 无症状创伤后气胸患者的对照胸片

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v4i1.1734

Julieta Correa-Restrepo, M. Restrepo-Moreno, Luis Guillermo Peláez, Rafael Díaz-Cadavid, Yuliana López-Vasco, María Alejandra Rojas, David Alejandro Mejía-Toro, C. Morales-Uribe

{"title":"Control chest x-ray in patients with asymptomatic posttraumatic pneumothorax","authors":"Julieta Correa-Restrepo, M. Restrepo-Moreno, Luis Guillermo Peláez, Rafael Díaz-Cadavid, Yuliana López-Vasco, María Alejandra Rojas, David Alejandro Mejía-Toro, C. Morales-Uribe","doi":"10.24294/irr.v4i1.1734","DOIUrl":"https://doi.org/10.24294/irr.v4i1.1734","url":null,"abstract":"Introduction: Chest trauma has a high incidence and pneumothorax is the most frequent finding. The literature is scarce on what to do with asymptomatic patients with pneumothorax due to penetrating chest trauma. The aim of this study was to evaluate what are the findings of the control radiography of patients with penetrating chest trauma who are not initially taken to surgery, and their usefulness in determining the need for further treatment. Methods: A retrospective cohort study was performed, including patients older than 15 years who were admitted for penetrating chest trauma between January 2015 and December 2017 and who did not require initial surgical management. We analyzed the results of chest radiography, the time of its acquisition, and the behavior decided according to the findings in patients initially left under observation. Results: A total of 1,554 patients were included, whose average age was 30 years, 92.5% were male and 97% had a sharp weapon wound. Of these, 186 (51.5%) had no alterations in their initial X-ray, 142 had pneumothorax less than 30% and 33 had pneumothorax greater than 30 %, hemopneumothorax or hemothorax. Closed thoracostomy was required as the final procedure in 78 cases, sternotomy or thoracotomy in 2 cases and discharged in 281. Conclusion: In asymptomatic patients with small or moderate pneumothorax and no other significant lesions, longer observation times, radiographs and closed thoracostomy may be unnecessary.","PeriodicalId":153727,"journal":{"name":"Imaging and Radiation Research","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1970-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115082247","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}

引用次数: 0

Use of magnetic resonance imaging and computed tomography in postmortem diagnostics 磁共振成像和计算机断层扫描在死后诊断中的应用

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v3i1.1724

Andrea Paola Najar-Céspedes, Esteban de Jesús Fuentes-Martínez

{"title":"Use of magnetic resonance imaging and computed tomography in postmortem diagnostics","authors":"Andrea Paola Najar-Céspedes, Esteban de Jesús Fuentes-Martínez","doi":"10.24294/irr.v3i1.1724","DOIUrl":"https://doi.org/10.24294/irr.v3i1.1724","url":null,"abstract":"Introduction: Given the heterogeneous nature and inherent complexity of forensic medical expertise, the expert (medical professional or related areas) must make the best use of the technical and technological tools at his disposal. Imaging, referring to the set of techniques that allow obtaining images of the human body for clinical or scientific purposes, in any of its techniques, is a powerful support tool for establishing facts or technical evidence in the legal field. Objective: To analyze the use of magnetic resonance and computed tomography in postmortem diagnosis. Methodology: information was searched in the databases PubMed, Science Direct, Springer Journal and in the search engine Google Scholar, using the terms “X-Ray Computed Tomography”, “Magnetic Resonance Spectroscopy”, “Autopsy” and “Forensic Medicine” published in the period 2008–2015. Results: MRI is useful for the detailed study of soft tissues and organs, while computed tomography allows the identification of fractures, calcifications, implants and trauma. Conclusions: In the reports found in the literature search, regarding the use of nuclear magnetic resonance and computed tomography in postmortem cases, named by the genesis of the trauma, correlation was found between the use of imaging and the correct expert diagnosis at autopsy.","PeriodicalId":153727,"journal":{"name":"Imaging and Radiation Research","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1970-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134031015","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}

引用次数: 1

Trends and developments in cardiac magnetic resonance imaging 心脏磁共振成像的趋势和发展

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v3i1.1727

A. Mayr, Günter Reiter, D. Beitzke

引用次数: 1

Relevant imaging elements for gout diagnosis and treatment 与痛风诊断和治疗相关的影像要素

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v5i1.1749

E. Fernandes, S. Bergamaschi, T. C. Rodrigues, G. Dias, Ralff Malmann, Germano Martins Ramos, Soraya Silveira Monteiro

{"title":"Relevant imaging elements for gout diagnosis and treatment","authors":"E. Fernandes, S. Bergamaschi, T. C. Rodrigues, G. Dias, Ralff Malmann, Germano Martins Ramos, Soraya Silveira Monteiro","doi":"10.24294/irr.v5i1.1749","DOIUrl":"https://doi.org/10.24294/irr.v5i1.1749","url":null,"abstract":"Gout is an arthritis characterized by the deposition of sodium monoacid crystals in the synovial membrane, articular cartilage, and periarticular tissues that leads to an inﬂamatory process. In most cases, the diagnosis is established by clinical criteria and analysis of the synovial fluid for MSU crystals. However, gout may manifest in atypical ways and make diagnosis difficult. In these situations, imaging studies play a fundamental role in helping to confirm the diagnosis or even exclude other differential diagnoses. Conventional radiography is still the most commonly used method in the follow-up of these patients, but it is a very insensitive test, because it only detects late changes. In recent years, advances in imaging methods have emerged in relation to gout. Ultrasound has proven to be a highly accurate test in the diagnosis of gout, identifying MSU deposits in articular cartilage and periarticular tissues, and detecting and characterizing tophi, tendinopathies, and tophi enthesopathies. Computed tomography is an excellent exam for the detection of bone erosions and evaluation of spinal involvement. Dual-energy computed tomography, a new method that provides information on the chemical composition of tissues, allows identification of MSU deposits with high accuracy. MRI can be useful in the evaluation of deep tissues not accessible by ultrasound. In addition to diagnosis, with the emergence of drugs that aim to reduce the tophaceous burden, imaging examinations become a useful tool in the follow-up treatment of gout patients.","PeriodicalId":153727,"journal":{"name":"Imaging and Radiation Research","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1970-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121438087","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}

引用次数: 0

Frequent central nervous system measurements using computed tomography and magnetic resonance imaging 经常使用计算机断层扫描和磁共振成像测量中枢神经系统

Imaging and Radiation Research Pub Date : 1970-01-01 DOI: 10.24294/irr.v3i1.1726

Pablo Sartori, Luis Alvarado, María Chirveches, Macarena Urrutia, Braian Yampolsky

引用次数: 0