OMICS journal of radiology最新文献_第9页

CT Examination Data Analysis as an Effective Method to Stimulate PatientDose Reduction CT检查数据分析作为刺激患者减剂量的有效方法

OMICS journal of radiology Pub Date : 2016-11-07 DOI: 10.4172/2167-7964.1000237

Chatzoglou, M. Molfetas, Tsapaki, D. Nikolopoulos, E. Chardali, E. Giaka, S. Kottou

引用次数: 2

Paraspinal and Foraminal Plexiform Neurofibromas: A Case Report fromRadiological Standpoint 椎旁及椎间孔丛状神经纤维瘤1例影像学分析

OMICS journal of radiology Pub Date : 2016-10-17 DOI: 10.4172/2167-7964.1000235

Padala Rn, Malla Umr

引用次数: 0

Extramedullary Hematopoiesis in Beta Thalassemia Major: MultisystemInvolvement β地中海贫血的髓外造血:多系统参与

OMICS journal of radiology Pub Date : 2016-10-07 DOI: 10.4172/2167-7964.1000234

Y. Kaitoukov, E. Zdanovich, T. Moser, C. Chartrand-Lefebvre

引用次数: 3

What is New in the Treatment of Eyelid Tumors with Radiation Therapy 放射治疗眼睑肿瘤有什么新进展

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000E141

K. Turaka, A. Turaka, B. Koneru

{"title":"What is New in the Treatment of Eyelid Tumors with Radiation Therapy","authors":"K. Turaka, A. Turaka, B. Koneru","doi":"10.4172/2167-7964.1000E141","DOIUrl":"https://doi.org/10.4172/2167-7964.1000E141","url":null,"abstract":"Malignant tumors of the eyelids can cause considerable functional and aesthetic complications. Most common eyelid tumor is basal cell carcinoma (BCC) followed by squamous cell carcinoma, sebaceous gland carcinoma, Merkel cell carcinoma and malignant melanoma (rare) [1]. They can be located at lower eyelid (most common site) or upper eyelid, outer canthus and inner canthus. Surgical excision is the standard primary treatment option for the eyelid tumors. However, in cases with incompletely excised primary tumors, recurrent tumors, or inoperable large primary tumors and elderly patients who cannot tolerate general anesthesia with significant co-morbidities, radiation therapy (RT) is considered as an effective alternative/adjuvant treatment modality [2-7]. Different radiation therapeutic methods such as external beam radiotherapy (EBRT) with x-rays [superficial (45-100 Kv), orthovoltage (100-250 Kv)] or megavoltage photons & electrons and radionuclide plaque brachytherapy has been used to treat various eyelid tumors with good success [2-9]. However, acute and chronic radiation side-effects (skin reactions, eyelid telangiectasia, eyelid atrophy, eyelash loss (madarosis), epiphora (tearing), ocular surface disorders (dry eyes), cataract, radiation papillopathy, retinopathy & maculopathy and second malignant neoplasms) can lead to significant functional and visual disabilities. Recently new techniques to precisely deliver the radiation to the target tumor has been developed that prevent damage to the surrounding healthy tissues and cause minimal radiation toxicities. Currently, interstitial highdose-rate (HDR) brachytherapy and electronic surface brachytherapy (ESB) are the new techniques being used to treat various nonmelanoma skin malignancies including the eyelid carcinomas [10-15].","PeriodicalId":90030,"journal":{"name":"OMICS journal of radiology","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2167-7964.1000E141","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70852481","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

FDG PET in Dementia FDG PET在痴呆中的作用

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000228

M. Shankar

引用次数: 1

Brain Tumor Heterogeneity: Voxel-wise Correlational Study of MRPerfusion and 2D MR Spectroscopic Imaging 脑肿瘤异质性:磁共振灌注与二维磁共振光谱成像体素相关性研究

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000232

A. Förschler, Katharina Schwede, M. Schubert, C. Zimmer, D. Winkler

{"title":"Brain Tumor Heterogeneity: Voxel-wise Correlational Study of MRPerfusion and 2D MR Spectroscopic Imaging","authors":"A. Förschler, Katharina Schwede, M. Schubert, C. Zimmer, D. Winkler","doi":"10.4172/2167-7964.1000232","DOIUrl":"https://doi.org/10.4172/2167-7964.1000232","url":null,"abstract":"An accurate characterization of glioma heterogeneity is essential when determining tumor grade and the most appropriate therapy target. Non-invasive imaging modalities such as MR perfusion imaging (PWI) and 2D proton MR spectroscopic imaging (MRSI) can provide functional and metabolic information about the tumor to assist in this task. Using a voxel-wise correlation we aimed at investigating whether both MRSI and PWI characterize brain tumor heterogeneity similarly, and, whether the regions of their most pathologic values coincide. In 31 patients with different primary brain tumors rCBV and rCBF were correlated to the metabolites Cho, Cr and NAA and the metabolite ratios Cho/Cr, NAA/Cr and Cho/NAA on a voxel-wise basis. Intraindividually, we tested for significant relationships and we recorded the reliability and the direction of these relationships by calculating the inter individual variance of Kendall's correlation coefficient τb. Additionally, the locations of the most pathologic values of PWI and MRSI were compared. Across all tumors we found no reliable relationship between perfusion and spectroscopic measures apart from a positive correlation of rCBV and rCBF with Cr, mainly based on a positive correlation in II° gliomas and glioblastomas but not in III° gliomas or lymphomas. The separate analysis of the tumor groups revealed consistent correlations of additional value pairs in II° gliomas and glioblastomas, but not in III° gliomas or lymphomas. The overall spatial concordance rate between the maximum perfusion values and the most pathological metabolite values was 34%. Our results suggest that brain tumors display heterogenous correlation pattern of the perfusion markers of malignancy to the spectroscopy-derived malignancy markers. As the single modality methods may display different kinds of tumor hot spots, PWI and MRSI should be fused to allow for more specific therapy planning of brain tumors.","PeriodicalId":90030,"journal":{"name":"OMICS journal of radiology","volume":"2016 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2167-7964.1000232","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70850368","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: 2

Achieving Consistent, Homogeneous, Dark Fat Suppression on BilateralBreast MRI at 3.0 Tesla in the Clinical Setting 在临床上3.0特斯拉的双侧乳房MRI上实现一致、均匀、暗脂肪抑制

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000230

Heather I. Greenwood, V. Arasu, Vibhas S Deshphande, D. Wisner, G. Laub, N. Hylton, B. Joe

{"title":"Achieving Consistent, Homogeneous, Dark Fat Suppression on BilateralBreast MRI at 3.0 Tesla in the Clinical Setting","authors":"Heather I. Greenwood, V. Arasu, Vibhas S Deshphande, D. Wisner, G. Laub, N. Hylton, B. Joe","doi":"10.4172/2167-7964.1000230","DOIUrl":"https://doi.org/10.4172/2167-7964.1000230","url":null,"abstract":"Purpose: Effective fat suppression is a fundamental aspect of diagnostic quality breast MR for cancer screening but is challenging at 3T due to higher B0 and B1 magnetic field inhomogeneities compared with 1.5T. The purpose of this study is to describe a technique to achieve consistent homogeneous, dark fat suppression for T1 breast MR imaging at 3T for clinical breast cancer screening and evaluation. Methods: This was an IRB approved, HIPAA compliant study. Over 100 clinical breast MRI patients were scanned from May 2010 through October 2010, as part of routine clinical care, on a wide-bore 3T Magnetom Verio (Siemens Medical Solutions), One pre-contrast and two post-contrast axial VIBE scans were acquired for dynamic T1 imaging of the bilateral breasts. A longer TE of 4.9 ms was chosen empirically for optimal fat saturation. Two MQSA-certified breast radiologists, independently reviewed 20 consecutive MR studies. MR images were assessed for homogeneity of fat suppression and degree of fat suppression, both on a 5-point scale. A kappa coefficient was calculated for inter-reader agreement for both homogeneity of fat suppression and degree of fat suppression. Results: Overall, we found minimal unsuppressed fat and overall dark gray fat, indicating a high degree of fat suppression on 3T MR. Readers rated 3T fat suppression homogeneity as having minimal to no inhomogeneity in 80-90% of the examinations, with moderate agreement, (K=0.62, p<0.003), and fat suppression degree was rated having dark to very dark fat for all examinations with perfect agreement (K=1.0, p<0.001). Conclusion: Homogeneous, dark fat suppression on bilateral axial breast MRI can be obtained at 3.0T consistently in the clinical setting with minimal unsuppressed fat.","PeriodicalId":90030,"journal":{"name":"OMICS journal of radiology","volume":"2016 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2167-7964.1000230","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70850174","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

q-Space Imaging in Meningioma 脑膜瘤的q-空间成像

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000229

Z. Fatima, A. Waqar

{"title":"q-Space Imaging in Meningioma","authors":"Z. Fatima, A. Waqar","doi":"10.4172/2167-7964.1000229","DOIUrl":"https://doi.org/10.4172/2167-7964.1000229","url":null,"abstract":"It has always been a goal in the medical sciences to develop diagnostic and imaging strategies having a minimum or no invasiveness and/or obliterating need of further invasive investigations. The differentiation of benign versus malignant tumors on the basis of imaging findings has always been a diagnostic dilemma as there is always some degree of overlap of imaging characteristics in both the categories [1,2]. In superficial lesions or in some abdominal visceral lesions, excision biopsy or fine needle aspiration cytology are relatively easy to perform and are adopted before deciding the management strategy. This distinction, however, becomes more important when we talk of brain lesions and at the same time biopsy is not always easy to do. Meningioma is mostly benign, but its atypical and malignant counterparts are notorious for recurrences and metastases even after apparent complete surgical removals [3,4]. Although, the lesion has been described to have particular features that warn about its atypical nature such as loss of its marginal irregularity, cystic and necrotic changes etc., but still are not confirmatory [1,5,6]. For obvious reasons, in this situation, a modality that can give an additional hint about the histopathological characteristic of the meningioma would matter a lot.","PeriodicalId":90030,"journal":{"name":"OMICS journal of radiology","volume":"34 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2167-7964.1000229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70850341","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

Management and Optimisation of the Dose in Computed Tomography viaa Dose Tracking Software 剂量跟踪软件在计算机断层扫描中的剂量管理和优化

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000227

V. Chatzoglou, S. Kottou, D. Nikolopoulos, M. Molfetas, Ioannis A Papailiou, V. Tsapaki

{"title":"Management and Optimisation of the Dose in Computed Tomography viaa Dose Tracking Software","authors":"V. Chatzoglou, S. Kottou, D. Nikolopoulos, M. Molfetas, Ioannis A Papailiou, V. Tsapaki","doi":"10.4172/2167-7964.1000227","DOIUrl":"https://doi.org/10.4172/2167-7964.1000227","url":null,"abstract":"Introduction: Computed Tomography (CT) produces high quality diagnostic images at the expense of increased radiation dose compared to routine radiographic examinations. The dose from the CT examinations can be reduced by controlling certain scanning parameters and optimising the employed practices. In this study a patient dosetracking software was utilised for the management of the CT doses and the optimisation of the scanning protocols. Material and Methods: DoseWatch from GE® Healthcare is a software for monitoring the radiation dose of patients undergoing CT examinations. It tracks simultaneously relevant technical and patient data. DoseWatch was used for the assessment of the scanning protocols of a Philips Brilliance 64 CT scanner during a period of three months in a large public general hospital of Athens in Greece. The dose dataset was compared with the CT Diagnostic Reference Levels (DRLs) available from the Greek Atomic Energy Commission (GAEC). Results and Conclusion: DoseWatch was deemed as a quick and effective tool for tracking and optimising the doses in CT examinations. It can be utilised as well for the improvement of the related scanning protocols. Through this suitable software, patients were identified with CT doses higher than the corresponding CT DRLs. The scanning parameters of the investigated cases were modified accordingly to achieve reduction of the corresponding CT doses.","PeriodicalId":90030,"journal":{"name":"OMICS journal of radiology","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.4172/2167-7964.1000227","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70850437","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: 7

Findings of High B-Value Q-Space Imaging of the Brain in Children withNeurofibromatosis 1 儿童神经纤维瘤病的高b值q -空间成像研究

OMICS journal of radiology Pub Date : 2016-08-31 DOI: 10.4172/2167-7964.1000231

Z. Fatima, S. Ichikawa, U. Motosugi, M. Imran, A. Waqar

引用次数: 0