ISRN radiology最新文献_第2页

The application of use case modeling in designing medical imaging information systems. 用例建模在医学影像信息系统设计中的应用。

ISRN radiology Pub Date : 2013-11-27 eCollection Date: 2013-01-01 DOI: 10.5402/2013/530729

Reza Safdari, Jebraeil Farzi, Marjan Ghazisaeidi, Mahboobeh Mirzaee, Azadeh Goodini

{"title":"The application of use case modeling in designing medical imaging information systems.","authors":"Reza Safdari, Jebraeil Farzi, Marjan Ghazisaeidi, Mahboobeh Mirzaee, Azadeh Goodini","doi":"10.5402/2013/530729","DOIUrl":"https://doi.org/10.5402/2013/530729","url":null,"abstract":"Introduction. The essay at hand is aimed at examining the application of use case modeling in analyzing and designing information systems to support Medical Imaging services. Methods. The application of use case modeling in analyzing and designing health information systems was examined using electronic databases (Pubmed, Google scholar) resources and the characteristics of the modeling system and its effect on the development and design of the health information systems were analyzed. Results. Analyzing the subject indicated that Provident modeling of health information systems should provide for quick access to many health data resources in a way that patients' data can be used in order to expand distant services and comprehensive Medical Imaging advices. Also these experiences show that progress in the infrastructure development stages through gradual and repeated evolution process of user requirements is stronger and this can lead to a decline in the cycle of requirements engineering process in the design of Medical Imaging information systems. Conclusion. Use case modeling approach can be effective in directing the problems of health and Medical Imaging information systems towards understanding, focusing on the start and analysis, better planning, repetition, and control. ","PeriodicalId":90195,"journal":{"name":"ISRN radiology","volume":"2013 ","pages":"530729"},"PeriodicalIF":0.0,"publicationDate":"2013-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045551/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32456110","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}

引用次数: 3

Alzheimer's disease detection in brain magnetic resonance images using multiscale fractal analysis. 基于多尺度分形分析的脑磁共振图像中阿尔茨海默病检测。

ISRN radiology Pub Date : 2013-10-29 eCollection Date: 2013-01-01 DOI: 10.5402/2013/627303

Salim Lahmiri, Mounir Boukadoum

引用次数: 28

Whole Body MRI at 3T with Quantitative Diffusion Weighted Imaging and Contrast-Enhanced Sequences for the Characterization of Peripheral Lesions in Patients with Neurofibromatosis Type 2 and Schwannomatosis. 3T全身核磁共振成像与定量弥散加权成像和对比增强序列用于确定神经纤维瘤病2型和许旺瘤病患者外周病变的特征。

ISRN radiology Pub Date : 2013-10-07 eCollection Date: 2013-01-01 DOI: 10.5402/2013/627932

Laura M Fayad, Jaishri Blakeley, Scott Plotkin, Brigitte Widemann, Michael A Jacobs

{"title":"Whole Body MRI at 3T with Quantitative Diffusion Weighted Imaging and Contrast-Enhanced Sequences for the Characterization of Peripheral Lesions in Patients with Neurofibromatosis Type 2 and Schwannomatosis.","authors":"Laura M Fayad, Jaishri Blakeley, Scott Plotkin, Brigitte Widemann, Michael A Jacobs","doi":"10.5402/2013/627932","DOIUrl":"10.5402/2013/627932","url":null,"abstract":"Purpose. WB-MRI is mainly used for tumor detection and surveillance. The purpose of this study is to establish the feasibility of WB-MRI at 3T for lesion characterization, with DWI/ADC-mapping and contrast-enhanced sequences, in patients with neurofibromatosis type 2 (NF-2) and schwannomatosis. Materials and Methods. At 3T, WB-MRI was performed in 11 subjects (10 NF-2 and 1 schwannomatosis) with STIR, T1, contrast-enhanced T1, and DWI/ADC mapping (b = 50, 400, 800 s/mm(2)). Two readers reviewed imaging for the presence and character of peripheral lesions. Lesion size and features (signal intensity, heterogeneity, enhancement characteristics, and ADC values) were recorded. Descriptive statistics were reported. Results. Twenty-three lesions were identified, with average size of 4.6 ± 2.8 cm. Lesions were characterized as tumors (21/23) or cysts (2/23) by contrast-enhancement properties (enhancement in tumors, no enhancement in cysts). On T1, tumors were homogeneously isointense (5/21) or hypointense (16/21); on STIR, tumors were hyperintense and homogeneous (10/21) or heterogeneous (11/21); on postcontrast T1, tumors enhanced homogeneously (14/21) or heterogeneously (7/21); on DWI, tumor ADC values were variable (range 0.8-2.7), suggesting variability in intrinsic tumor properties. Conclusion. WB-MRI with quantitative DWI and contrast-enhanced sequences at 3T is feasible and advances the utility of WB-MRI not only to include detection, but also to provide additional metrics for lesion characterization. ","PeriodicalId":90195,"journal":{"name":"ISRN radiology","volume":"2013 ","pages":"627932"},"PeriodicalIF":0.0,"publicationDate":"2013-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045550/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32456116","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}

引用次数: 0

Radiographic contrast-media-induced acute kidney injury: pathophysiology and prophylactic strategies. 造影剂引起的急性肾损伤:病理生理学和预防策略。

ISRN radiology Pub Date : 2013-09-16 eCollection Date: 2013-01-01 DOI: 10.5402/2013/496438

Umar Sadat

引用次数: 30

Overjet and Overbite Influence on Cyclic Masticatory Movements: A CT Study. 覆盖和覆盖对循环咀嚼运动的影响:一项CT研究。

ISRN radiology Pub Date : 2013-09-05 eCollection Date: 2013-01-01 DOI: 10.5402/2013/932805

Ingrid Tonni, Massimo Pregarz, Giulio Ciampalini, Fulvia Costantinides, Christiane Bodin

{"title":"Overjet and Overbite Influence on Cyclic Masticatory Movements: A CT Study.","authors":"Ingrid Tonni, Massimo Pregarz, Giulio Ciampalini, Fulvia Costantinides, Christiane Bodin","doi":"10.5402/2013/932805","DOIUrl":"https://doi.org/10.5402/2013/932805","url":null,"abstract":"Aim. To determine whether a relationship exists between the linear measurements of overjet and overbite and the interincisal space delimited by the morphology of the upper and lower incisors. Method and Materials. 30 subjects (age range from 14.1 to 34.8 years, with a median age of 23.5 years and sex ratio F/M: 5/10) with overjet and overbite equal to 2 mm were selected from a group of 381 individuals with a full and well-aligned dentition, no previous dental treatment, and no signs or symptoms indicative of temporomandibular disorder. Computed Tomography images of vinyl polysiloxane impressions of the 30 subjects' anterior teeth were acquired. The interincisal space was defined as Immediate Overjet Angle and was calculated on the Computed Tomography images. Results. Although the 30 subjects presented overlapping measures of overjet and overbite, the values of the Immediate Overjet Angles were different in a range of a minimum value of 12° and a maximum value of 54°. Conclusion. This study reveals that (1) only 30 (7.9%) of the 381 individuals considered have values of overjet and overbite equal to 2 mm and (2) the Immediate Overjet Angle values of the 30 subjects are not related to the values of overjet and overbite. ","PeriodicalId":90195,"journal":{"name":"ISRN radiology","volume":"2013 ","pages":"932805"},"PeriodicalIF":0.0,"publicationDate":"2013-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.5402/2013/932805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32455484","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}

引用次数: 1

Abdominal manifestations of lymphoma: spectrum of imaging features. 淋巴瘤的腹部表现:影像学特征谱。

ISRN radiology Pub Date : 2013-09-02 eCollection Date: 2013-01-01 DOI: 10.5402/2013/483069

Adonis Manzella, Paulo Borba-Filho, Giuseppe D'Ippolito, Marcella Farias

引用次数: 44

Magnetoencephalography: fundamentals and established and emerging clinical applications in radiology. 脑磁图：放射学中的基础知识和已有及新出现的临床应用。

ISRN radiology Pub Date : 2013-08-12 eCollection Date: 2013-01-01 DOI: 10.5402/2013/529463

Sven Braeutigam

{"title":"Magnetoencephalography: fundamentals and established and emerging clinical applications in radiology.","authors":"Sven Braeutigam","doi":"10.5402/2013/529463","DOIUrl":"10.5402/2013/529463","url":null,"abstract":"Magnetoencephalography is a noninvasive, fast, and patient friendly technique for recording brain activity. It is increasingly available and is regarded as one of the most modern imaging tools available to radiologists. The dominant clinical use of this technology currently centers on two, partly overlapping areas, namely, localizing the regions from which epileptic seizures originate, and identifying regions of normal brain function in patients preparing to undergo brain surgery. As a consequence, many radiologists may not yet be familiar with this technique. This review provides an introduction to magnetoencephalography, discusses relevant analytical techniques, and presents recent developments in established and emerging clinical applications such as pervasive developmental disorders. Although the role of magnetoencephalography in diagnosis, prognosis, and patient treatment is still limited, it is argued that this technology is exquisitely capable of contributing indispensable information about brain dynamics not easily obtained with other modalities. This, it is believed, will make this technology an important clinical tool for a wide range of disorders in the future. ","PeriodicalId":90195,"journal":{"name":"ISRN radiology","volume":"2013 ","pages":"529463"},"PeriodicalIF":0.0,"publicationDate":"2013-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045536/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32456111","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}

引用次数: 0

B-mode and elastosonographic evaluation to determine the reference elastosonography values for cervical lymph nodes. 通过 B 型和弹性成像评估确定宫颈淋巴结的弹性成像参考值。

ISRN radiology Pub Date : 2013-08-07 eCollection Date: 2013-01-01 DOI: 10.5402/2013/895287

Aydin Kurt, Idil Gunes Tatar, Ali Ipek, Baki Hekimoglu

{"title":"B-mode and elastosonographic evaluation to determine the reference elastosonography values for cervical lymph nodes.","authors":"Aydin Kurt, Idil Gunes Tatar, Ali Ipek, Baki Hekimoglu","doi":"10.5402/2013/895287","DOIUrl":"10.5402/2013/895287","url":null,"abstract":"Background. It is crucial to differentiate between reactive and malignant lymphadenopathies. Elastosonography measures the elasticity of the tissue. Having a reference value for benign lymph nodes (LNs) is important in interpretation. The purpose of this study is to determine the reference elastosonography values of cervical LNs. Methods. 97 LNs were evaluated by B-mode and elastosonography. Depth, length, width, length to width ratio, hilar-cortical thickness, strain ratio, and elasticity scores were measured. Results. In 18.6% of the cervical LNs cortical thickness was less than the hilar thickness (group A) and in 81.4% it was equal or more (group B). 69.1% of LNs showed strain ratio (SR) less than 3 (group 1) and 30.9% equal to or more than 3 (group 2). 33% of LNs displayed elasticity score (ES) 1; 30.9% ES 2; 22.7% ES 3, and 13.4% ES 4. There was a significant correlation between thickness ratios and elasticity scores (P: 0.011). A significant correlation was also demonstrated between SR groups and elasticity scores. Conclusion. A simple, reproducible, noninvasive imaging technique for diagnosis of malignant LNs is necessary. Elastosonography can aid in the differentiation of benign versus malignant cervical LNs, thus help reduce the number of unnecessary biopsies for benign processes. ","PeriodicalId":90195,"journal":{"name":"ISRN radiology","volume":"2013 ","pages":"895287"},"PeriodicalIF":0.0,"publicationDate":"2013-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045529/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32455483","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}

引用次数: 0

Synergistic radioprotection by gamma-tocotrienol and pentoxifylline: role of cAMP signaling. γ-生育三烯酚和喷托维林的协同放射保护作用：cAMP 信号的作用。

ISRN radiology Pub Date : 2013-07-07 eCollection Date: 2013-01-01 DOI: 10.5402/2013/390379

Shilpa Kulkarni, Kushal Chakraborty, K Sree Kumar, Tzu-Cheg Kao, Martin Hauer-Jensen, Sanchita P Ghosh

{"title":"Synergistic radioprotection by gamma-tocotrienol and pentoxifylline: role of cAMP signaling.","authors":"Shilpa Kulkarni, Kushal Chakraborty, K Sree Kumar, Tzu-Cheg Kao, Martin Hauer-Jensen, Sanchita P Ghosh","doi":"10.5402/2013/390379","DOIUrl":"10.5402/2013/390379","url":null,"abstract":"Purpose. This study was designed to determine the efficacy and mechanisms of radioprotection by the combination of gamma-tocotrienol (GT3) and pentoxifylline (PTX) against acute radiation injury. Materials and Methods. Post-irradiation survival was monitored to determine the most efficacious dose and time of administration of PTX. Dose reduction factor (DRF) was calculated to compare the radioprotective efficacy of the combination. To determine the mechanism of synergistic radioprotection by the combination, mevalonate or calmodulin were coadministered with the GT3-PTX combination. Mevalonate was used to reverse the inhibitory effect of GT3 on 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGCR), and calmodulin was used to reverse the inhibition of phosphodiesterase (PDE) by PTX. Results. The combination was most effective when 200 mg/kg of PTX was administered 15 min before irradiation along with 200 mg/kg of GT3 (-24 h) and resulted in a DRF of 1.5. White blood cells and neutrophil counts showed accelerated recovery in GT3-PTX-treated groups compared to GT3. Mevalonate had no effect on the radioprotection of GT3-PTX; calmodulin abrogated the synergistic radioprotection by GT3-PTX. Conclusion. The mechanism of radioprotection by GT3-PTX may involve PDE inhibition. ","PeriodicalId":90195,"journal":{"name":"ISRN radiology","volume":"2013 ","pages":"390379"},"PeriodicalIF":0.0,"publicationDate":"2013-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4045513/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"32450694","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}

引用次数: 0

Understanding the role of hemodynamics in the initiation, progression, rupture, and treatment outcome of cerebral aneurysm from medical image-based computational studies. 从基于医学影像的计算研究中了解血液动力学在脑动脉瘤的发生、发展、破裂和治疗结果中的作用。

ISRN radiology Pub Date : 2013-07-02 eCollection Date: 2013-01-01 DOI: 10.5402/2013/602707

Marcelo A Castro

引用次数: 0