Anybody knows what is the difference between specific absorption rate (SAR) and specific loss power (SLP)? Are they the same or different parameter of the ferrofluid?
I will be grateful for your help!
Best Wishes,
Piotr
Within the context of magnetic hyperthermia, the SAR and SLP are the same magnitude. SLP was coined much later, because SAR is somewhat misleading because of two main reasons: 1) It was used in the context of high-frequency radiation (microwaves or higher) where the formulae and mechanisms for energy absorption by human tissues are different from the low-frequency magnetic mechanisms observed in magnetic hyperthermia; and 2) because "Absorption Rate" does not state what is that is being absorbed. Specific Loss Power is more accurate since it is mass-normalized (specific) and denotes the magnitude (Power) that is being absorbed/released.
Both are given in Watts/gram.
Hope this helps.
SAR as well as SLP are used to describe efficiency of techniques used in treatment of cancer by hyperthermia involving a ferrofluid. The later is more appropiate though both the terms have same meaning and same units are used.
Hi, it is worth to notethe different expressions to calculate SLP and SAR. The web page of Nanotherics gathers such expressions:
http://www.nanotherics.com/magneticnanoparticleheating.htm
For interested in this topic I suggest to read this paper:
P. Gas, and A. Miaskowski, “Specifying the ferrofluid parameters important from the viewpoint of Magnetic Fluid Hyperthermia”, in 2015 Selected Problems of Electrical Engineering and Electronics (WZEE), IEEE Xplore, art. no. 7394040, [pp. 1-6], 2015.
Available on website: http://dx.doi.org/10.1109/WZEE.2015.7394040
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