Nano-Biomaterials
Mohammad Nazari; Razieh Solgi; Ghazale Graily; Seyed Rabi Mahdavi; Alireza Shirazi
Volume 12, Issue 1 , June 2018, , Pages 11-23
Abstract
In clinical studies, it is difficult to determine the temperature distribution throughout both tumor and normal tissue during hyperthermia treatment, since temperatures are sampled at only a limited number of locations with conventional sensors. Simulation studies can help physicians understand better ...
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In clinical studies, it is difficult to determine the temperature distribution throughout both tumor and normal tissue during hyperthermia treatment, since temperatures are sampled at only a limited number of locations with conventional sensors. Simulation studies can help physicians understand better the effects of the treatment. In this study, three 2D tumor models are built in the COMSOL software environment based on the images of nano-particle distributions in sliced PC3, DU145 and LAPC4 tumors. The images are pre-processed in MATLAB before being imported into COMSOL. A uniform distribution model is added as a control group. Temperature distribution, maximum temperature, time to reach steady state, CEM43, iso-effective dose and heat flux at tumor-tissue boundary are analyzed to evaluate the effect of the nano-particle distribution on hyperthermia treatment. The results indicate that a more concentrated nano-particle distribution is better in damaging diseased tissue than the uniform distribution under high heating power. A more uniform distribution is better than the concentrated distribution under low heating power. For concentrated nano-particle distributions, the location where the nano-particles are concentrated influences tissue damage: a more centered one has a better effect. Tumor tissue is more likely to be defective.
Biological Computer Modeling / Biological Computer Simulation
Gelare Valizadeh; Fateme Fatemi; Mahmoud Shahabadi; Mohammad Ali Oghabian; Majid Pouladian
Volume 8, Issue 2 , June 2014, , Pages 125-133
Abstract
MTDDS is an innovative treatment modality to completely tumor remission with no negative side effect. In this method functionalize magnetic nanoparticles are designed as the drug carrier to get the specific target in the body. Anticancer agents are bounded to magnetite nanoparticles with biocompatible ...
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MTDDS is an innovative treatment modality to completely tumor remission with no negative side effect. In this method functionalize magnetic nanoparticles are designed as the drug carrier to get the specific target in the body. Anticancer agents are bounded to magnetite nanoparticles with biocompatible starch coating suspended in the fluid. Now if they are injected intra-arterially near the target volume, they would be trapped at the target region via a local applied magnetic field with the high gradient near the target site. In this paper we have evaluated some nanoparticle trajectories with different size in order to evaluate the effect of the size on the efficiency of the magnetic drug targeting system.