Specifying the ferrofluid parameters important from the viewpoint of magnetic fluid hyperthermia

Gas, Pacific; Miaskowski, A.

doi:10.1109/wzee.2015.7394040

Cited by 37 publications

(40 citation statements)

References 24 publications

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“…When magnetic nanoparticles are exposed to a magnetic field of alternating current they release heat (Gas et al 2015). This release of heat is the therapeutic tool called magnetic fluid hyperthermia (MHF) that destroys tumor cells by increasing the temperature in the range of 41-46 °C (Abdellahia et al 2018).…”

Section: Magnetic Hyperthermiamentioning

confidence: 99%

“…For the desired heating of the tissues, the amount of heat absorbed is related to the specific absorption rate (SAR) (Iglesias et al 2016). This is defined as the thermal power dissipated per unit mass of magnetic material in the sample subject to the AC magnetic field (Gas et al 2015). The following equation shows the formulation used in the calculation of the SAR-parameter: where C p is the specific heat of the aqueous suspension of the magnetite nanoparticles, m f is the mass of the solution, m Fe represents the mass of iron oxide nanoparticles and ΔT∕Δt is the slope of the initial region of the heating curve in the adiabatic system.…”

Section: Specific Absorption Rate (Sar)mentioning

confidence: 99%

“…The following equation shows the formulation used in the calculation of the SAR-parameter: where C p is the specific heat of the aqueous suspension of the magnetite nanoparticles, m f is the mass of the solution, m Fe represents the mass of iron oxide nanoparticles and ΔT∕Δt is the slope of the initial region of the heating curve in the adiabatic system. It is worth mentioning that due to the low concentration of particles in the suspension, it is reasonable that the value of the specific heat of the magnetic fluid is approximated by the water value ( C p = 4183 J kg −1 K −1 ) (Gas et al 2015).…”

Section: Specific Absorption Rate (Sar)mentioning

confidence: 99%

“…The specific absorption rate (SAR) is a very important parameter for determining the functionality of magnetic nanoparticles (Gas et al 2015). By means of this property we can predict the efficiency of the nanocomposite.…”

Section: Specific Absorption Rate (Sar)mentioning

confidence: 99%

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Study of heating curves generated by magnetite nanoparticles aiming application in magnetic hyperthermia

Silva

Campos

2020

Braz. J. Chem. Eng.

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Malignant tumors occur by uncontrolled multiplication of the body's cells. Currently, a promising technique, called magnetic hyperthermia, has been intensively researched. The technique makes it possible to interrupt the growth of tumor cells by the localized application of heat from the magnetization/demagnetization of magnetic nanoparticles (the Joule effect). The amount of heat generated depends on the magnetic material and the characteristics of the external magnetic field. In this work, magnetite Fe 3 O 4 particles (core-shell layer type) were synthesized by the wet coprecipitation method and coated with a polymer blend of polyethylene glycol and polyvinylpyrrolidone (PEG/PVP). The nanoparticles were subjected to a magnetic field of intensity equal to 12 kA m −1 and frequency 202 kHz. Under these conditions, specific absorption rate (SAR) values between 15-48 W g −1 were obtained. The heating curves obtained were adjusted with a proposed mathematical model. The adjustments were satisfactory and showed a good correlation coefficient (at an averaged level of 0.99). In addition, hysteresis curves and FTIR spectra were obtained. Keywords Magnetic hyperthermia • Nanoparticles • Magnetite • Mathematical model List of symbols I Electric current, [A] f Frequency, [kHz] t Magnetic field exposure time, [min] ΔT Temperature variation in the hyperthermia assay, [°C]

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Section: Magnetic Hyperthermiamentioning

confidence: 99%

Section: Specific Absorption Rate (Sar)mentioning

confidence: 99%

Section: Specific Absorption Rate (Sar)mentioning

confidence: 99%

Section: Specific Absorption Rate (Sar)mentioning

confidence: 99%

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Study of heating curves generated by magnetite nanoparticles aiming application in magnetic hyperthermia

Silva

Campos

2020

Braz. J. Chem. Eng.

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“…As an example of magnetic field and temperature distribution calculation, realistic situation with real physical tissue parameters was considered [7][8][9][10]. It was assumed that tumor is placed inside human thorax, as it is shown in Fig.4.…”

Section: Equations Descrining Fields Distributionmentioning

confidence: 99%

Analysis of electromagnetic heating in magnetic fluid deep hyperthermia

Kurgan¹,

Gas²

2018

EasyChair Preprints

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In this paper, we describe the numerical modeling of magnetically induced heating of tissues in magnetic fluid deep hyperthermia. When placed in sinusoidal varying electromagnetic field, the Brownian particle rotation and Neel relaxation mechanisms induce in ferrofluid heat generation. In order to destroy tumors cells while preventing healthy tissues, such parameters as susceptibility of nanoparticles, exciting current parameters and intensity of magnetic fields should be calculated precisely. In this publication, coupled field problem resulting from Maxwell's equation and Penne's bioheat equation is discussed. Both sets of equations are solved using the finite element analysis method. We use a simplify model of human thorax with blood perfusion mechanism and tumor placed in it. Heat generation source in tumor is obtained by ferromagnetic nanoparticles. Magnetic and temperature field distribution is discussed in context of optimal tumor treatment.

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Thermal Effect by Applying Laser Heating in Iron Oxide Nanoparticles Dissolved in Distilled Water

et al. 2019

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Specifying the ferrofluid parameters important from the viewpoint of magnetic fluid hyperthermia

Cited by 37 publications

References 24 publications

Study of heating curves generated by magnetite nanoparticles aiming application in magnetic hyperthermia

Study of heating curves generated by magnetite nanoparticles aiming application in magnetic hyperthermia

Analysis of electromagnetic heating in magnetic fluid deep hyperthermia

Thermal Effect by Applying Laser Heating in Iron Oxide Nanoparticles Dissolved in Distilled Water

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