abstractbackground: delivering the radiation dose to the target volume and minimizing the dose to normal tissues are the main objectives in radiotherapy. the aim of our study is to enhance the contrast of the portal image to increase the accuracy of delineation of the organs in the irradiation field.   methods: the software was written based on local enhancement of the pixel values in image mat...

conclusions contrast-agent-induced nephropathic changes are more closely related to the magnitude of lipid peroxidation than protein oxidation. results compared with the control group, groups cin and n + cin had significantly higher urea and lhp levels (p < 0.05 and p < 0.001, respectively) and significantly lower cu, zn-sod activity and creatinine clearance (p < 0.05). there was no statistical...

magnetic resonance imaging (mri) contrast agents most commonly agents used in diagnosing different diseases. several agents have been ever introduced with different peculiar characteristics. they vary in potency, adverse reaction and other specification, so it is important to select the proper agent in different situations. we conducted a systematic literature search in medline/pubmed, web of s...

background: magnetic resonance imaging (mri) is the standard method for observing brain plaques and contrast material injection is necessary for demonstrating the active plaque.this study compared the rate of enhancement of plaques with gadovist and magnevist in relapse phase of ms. methods: in this double blind study, after neurological examination of 62 patients in the attack phase of ms, two...

Contrast-induced acute kidney injury (AKI) is a common complication following percutaneous coronary intervention (PCI) in patients with background of chronic disease (CKD). This can lead to short- and long-term dialysis requirements. There has been some interest recent years performing PCI high-risk minimal use contrast avoid this complication. We reviewed case series eight cases where ultra-lo...