Background: Cancer is deadly to most of its patients. Consequently, researchers and modelers studies show that there are many ways to cure and destroy it. One of the effective ways is to inject the blood vessel close to the tumor with magnetic nanoparticles. Another way called the radiation therapy or radiotherapy, which eradicates cancer cells through high doses of radiation.

Objective: This paper opts to investigate the influences of thermal radiation and variable electrical conductivity on peristaltic flow of Carreau Nanofluids. First order chemical reaction, Dufour and Soret effects are taken into consideration.

Methods: The resulting system of partial differential equations is solved numerically with the aid of Parametric-NDSolve. Results for velocity, temperature and concentration distributions are obtained in the analytical two-dimensional and three-dimensional forms. The streamlines graphs are offered in the terminus, elucidating the trapping bolus phenomenon.

Results: It has been found that thermal radiation is a decreasing function in the temperature of the fluid. As the temperature decreases, the diameter of the nanoparticles increases i.e., the volume of nanoparticle and its concentration increases and become more effective near tumor tissues.

Conclusion: Radiotherapy and Thermotherapy are effective methods to cure and damage the tumor tissues.

背景：癌症对大多数患者来说是致命的。因此，研究人员和建模人员的研究表明，有很多方法可以治愈和销毁它。一种有效的方法是用磁性纳米颗粒向靠近肿瘤的血管内注射。另一种方法称为放射疗法或放射疗法，它通过高剂量的放射根除癌细胞。

目的：本文旨在研究热辐射和可变电导率对Carreau纳米流体的蠕动流动的影响。考虑一阶化学反应，Dufour和Soret效应。

方法：借助参数-NDSolve数值求解所得的偏微分方程组。速度，温度和浓度分布的结果以解析的二维和三维形式获得。终点提供了流线图，阐明了陷药现象。

结果：已经发现，热辐射是流体温度的下降函数。随着温度降低，纳米颗粒的直径增加，即纳米颗粒的体积及其浓度增加，并且在肿瘤组织附近变得更有效。

结论：放疗和热疗是治愈和损伤肿瘤组织的有效方法。