The tricomponent composite chitosan/polyvinyl pyrrolidone (CS/PVP) with different weight ratios of (0, 20, 40, 60, and 80 wt%) of copper-hydroxyapatite (Cu-HAP) were prepared by solvent casting technique, which was characterized by X-ray diffraction, Fourier-transform infrared, and scanning electron microscopy with energy-dispersive X-ray to confirm the formation of Cu-HAP/CS/PVP composite. The Cu-HAP/CS/PVP composite with 80 wt% Cu-HAP showed 98.73 ± 1.
View Article and Find Full Text PDFPurpose: The aim of this work is to study the dosimetric parameters of newly introduced 2.5 MV imaging x-ray beam used as inline imaging to do setup verification of the patient undergoing radiation therapy. As this x-ray beam is in megavoltage range but comprises of a lower energy spectrum.
View Article and Find Full Text PDFPurpose: Addition of high Z implants in the treatment vicinity or beam path is unavoidable in certain clinical situation. In this work, we study the properties of radiation interaction parameters such as mass attenuation coefficient (MAC), x ray beam transmission factor (indirect beam attenuation), interface effects like backscatter dose perturbation factor (BSDF) and forward dose perturbation factor (FDPF) for flattened (FF) and unflattened (UF) x ray beams.
Methods: MAC for stainless steel and titanium alloy was measured using CC13 chamber with appropriate buildup in narrow beam geometry.