Background: There are various methods to read out responses of a polymer-gel dosimeter, among which the Magnetic Resonance Imaging (MRI) technique is the most common one. Optimizing imaging protocols can have significant effect on the sensitivity and the dose resolution of polymer gel dosimeters. This study has investigated the effects of the number of echoes (NOE) and the echo time spacing (ES...

Recently, time reversal (TR) method, due to its high functionality in heterogeneous media has been widely employed in microwave imaging (MI) applications. One of the applications turning into a great interest is through-wall microwave imaging (TWMI). In this paper, TR method is applied to detect and localize a target obscured by a brick wall using a numerically generated data. Regarding this, i...

background imaging plays a critical role not only in the detection, but also in the characterization of lung masses as benign or malignant. objectives to determine the diagnostic accuracy of dynamic magnetic resonance imaging (mri) in the differential diagnosis of benign and malignant lung masses. patients and methods ninety-four masses were included in this prospective study. five dynamic seri...

inflammatory myofibroblastic tumor (imt) is an aggressive benign mass that may arise from various tissues and organs with a great variability of histological and clinical appearances. due to variable and nonspecific imaging findings, diagnosis of imt is not obtained before surgery. the aim of this paper is to present ct and mri findings during four-year follow-up of complete, spontaneous regres...

conclusion these data indicate that while ce-mri will depict more positive results, there are cases in which dwi will show a positive result while ce-mri is negative. we suggest that the combination of these two imaging modalities might yield more positive results in diagnosing acute ms attack giving rise to a more accurate diagnosis. results ce-mri yielded positive results for 61 (87%) patient...

conclusions small size, smooth lesion border and homogeneity favor benign nature of the incidental splenic lesions, while restricted diffusion might be a feature of malignancy. follow-up imaging might be helpful in a subset of patients to discriminate benign and malignant incidental splenic lesions. methods this retrospective study was performed in a tertiary referral center. data of patients w...