Journal of Cancer Therapy, 2013, 4, 1262-1271 Published Online September 2013 (
Controlled Local Hyperthermia and Magnetic
Hyperthermia of Surface (Skin) Cancer Diseases
Zviad Kovziridze*, Paata Khorava, Nunu Mitskevich
Department of Chemical and Biological Technology, Technical University of Georgia, Tbilisi, Georgia.
Email: *
Received May 23rd, 2013; revised June 25th, 2013; accepted July 1st, 2013
Copyright © 2013 Zviad Kovziridze et al. This is an open access article distributed under the Creative Commons Attribution License,
which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Average size of hematite and magnetite micro and nanopowders and polydispersity index, zeta potential and distribu-
tion of particles were studied. Analysis showed that averag e size of th e obtained particles for magnetite is 740 .9 nm, for
hematite particles 30 - 35 nm. Alternate current feed source was created for hyperthermia. Proceeding from the re-
quirements of the objectives, the U type MnZn material magneto conductors were selected, in which 10.0 and 8.0 mm
width gaps were cut and glass test tubes with magnetite or hematite suspensions were placed in them. Series of experi-
ments at various field intensity and frequencies showed that for efficient magnetic hyperthermia therapy more powerful
device was needed with frequency of up to 10 Mega Hertz to achieve the temperature 43˚C - 45˚C necessary for full
activation of Neel and Brown mechanisms in particles. At the next stage, on the basis of experimental material the anti-
cancer mono-therapeutic effect of hyperthermia and its adjuvant action in poly chemotherapeutic treatment was pre-
sented by the use of a device created by us “Lezi”. As a result of the experiment it was shown that in all animals (out-
bred albino mice, 3 month s old) inhibition of can cer growth was fixed and intratumoral necro sis was developed, while
after 7 and 10 sessions tumors were ulcerated, which refers to positive effect of the experiment (Conclusion of Patho-
logicanatomical Laboratory “PATGEO”, Tbilisi, Georgia ).
Keywords: Magnetic Hyperthermia; Nanopowder; Malignant Cancer; Necrosis; Ulceration; Controlled Local
Hyper Thermia
1. Introduction
It is known that malignant cancers consist of cancer cells,
which differ from normal ones by uncontrolled and un-
limited propagation and growth of cells. Therefore inten-
sity of metabolic processes in malignancies and, corre-
spondingly, energetic requirements are higher than in
common healthy tissues. Taking into consideration this
factor, it is perspective to use chemical and biophysical
effects on cancer tissues and its neighboring tissues,
which in definite time period will exhaust energetic po-
tential of degenerated cells, result in denaturation (death)
of their proteins, preserve viability of healthy cells.
Such biophysical impact might be the local hyper-
thermia (43˚C - 45˚C).
Cancer cells die at about 43˚C, since delivery of oxy-
gen via blood vessels is insufficient, while normal cells
are not injured even at higher temperature. Alongside
with it, cancer is heated easier th an nor mal tissues aro und
it, since blood vessels and nervous systems are less de-
veloped in cancer [1-3].
Ceramic Microspheres for Cancer Radiotherapy
Y2O3-Al2O3-SiO2 Glass Microspheres
In 1987 Hyatt and Day [4] and Erbe and Day [5]
proved for the first time that it was possible to use
17Y2O3-19Al2O3-64 SiO2 (mol%) 20 - 30 mcm diameter
glass microspheres for in situ irradiation of cancer. In
this glass Yttrium-89 (89Y) is nonradioactive isotope,
which is found in nature at 100%, but neutron irradiation
results in activation of 89Y, which results in creation of
β-irradiating 90Y, half-life of which equals to 64.1 hr.
When these 20 - 30 mcm diameter radioactive glass mi-
crospheres are injected into organism (e.g. liver cancer)
they fall into narrow blood vessels of cancer and block
delivery of nutrients. Alongside with it, it gives high-
ionized β-rays acting at short distances. β-ray does not
affect other chemical elements and it has short, 2.5 mm
penetration range into live tissue and thus it is not dan-
gerous for healthy tissues. These microspheres are char-
*Corresponding author.
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Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases 1263
acterized by high chemical durability and therefore the
radioactive 90Y microsphere stays in diseased body and
doesn’t affect surrounding healthy tissues. Radioactivity
of 90Y at neutron irradiation [6] decreases to insignificant
level in 21 days; therefore microspheres lose activity
after treatment of cancer. They are used already clinically
for liver cancer therapy in Canada, USA and China. They
are used in clinical experiments for treatment of affected
kidney and spleen and in cinoectomy irradiation of ar-
thritis joints [7-20].
Ceramic Microspheres for Cancer Hyperthermia,
Ferromagnetic Glass Ceramics
Currently lithium ferrite (LiFe5O8) containing glass ce-
ramic in hematite (α-F2O3) bio-compatible matrix and
SiO2-P2O5 glass phase [21-27], magnetite (F3O4) in β-
volastonite (β-CaSiO3) matrix and CaO-SiO2-B2O3-P2O5
glass phase [28-35], α-Fe2O3 [36], in Fe3O4 B
CaO-SiO2-P2O5 glass phase [37] and zinc-iron ferrite in
CaO-SiO2 glass phase [38] are developed as thermo grain
to be used in hyperthermia. Thus, e.g. glass ceramic that
contains F3O4 in β-CaSiO3 matrix and CaO-SiO2-B2O3-P2O5
glass phase was efficient [29-31] in destruction of cancer
cells implanted in rabbit femoral bone, when it was in-
troduced in the pin-form into brain channel and [36] was
placed in alternate magnetic field [33]. But such glass-
ceramic pins can’t be used clinically, since cancer cells
can be scattered around. Normal cells and injection of
glass-ceramic pins can result in cancer metastasis. 20 -
30 mcm diameter ferromagnetic microspheres might be
used for local heating of cancer through loss of hysteresis
by ferromagnetic materials, without initiation of cancer
metastasis. Microspheres can be introduced into cancer
via blood vessels [39] and then placed in alternate mag-
netic field. But up to now, 20 - 30 mcm size microspheres
are not obtained and they have not revealed high heat
formation capacity. Currently precise mechanism of hy-
perthermia for cancer therapy is not known. Unknown is
the size of magnetite or hematite particles too. There are
no data in special references about it.
Index of morbidity and lethality conditioned by melig-
nancies in the whole world is increasing permanently.
Early diagnostics is rather difficult and majority of pa-
tients address hospitals because of generalized cancers,
when they need combined surgery, radiation and drug
therapy and complex treatment. Number of patients who
address physician-oncologists with manifestation of cli-
nical signs and various metabolic derangements inherent
to complicated cancer processes has increased.
Development of new methods of treatment of melig-
nancies is the most urgent task of oncology Inculcation
of drugs and methods of treatment possessing positive ef-
fects which are proved by experimental and clinical stud-
ies into clinical practice are forward steps in the sphere
of treatment of oncologic patients.
2. Main Part
2.1. Goal and Objectives of Hyperthermal
The present research pursues improvement of modern
and recent results in the sphere of treatment of patients
suffering from cancer, by the application of hyperthermia
on cancer formation.
To achieve this goal we plan to resolve the following
1) Study of anticancer therapeutic effect on experi-
mental cancers;
2) Determination of adjuvant anticancer effect of hy-
perthermia in experiment, in combination with polyche-
3) Study of various regimes of hyperthermia consider-
ing immediate and recent results.
2.2. Experimental (Stage I)
To implement the first stage works, first of all, we’ll take
X-ray of the used magnetite powder and hematite nano-
particles obtained on the rotation kathode device created
by us (Patent, receiving method, registration number
11731, 15.03.2010. Georgian National Patent Center
“SAQPATENTI”); Figures 1 and 2.
As is seen from the X-ray analysis magnetite consists
mainly of Fe3O4, dhkl = 2954; 1520; 2095; 1710; 1612;
1483 Å, hematite dhkl = 2690; 2520; 2422; 1710; 1694;
1600 Å, traces of CaCO3 d
hkl = 3030; 1910; 1873 and
traces of SiO2, but the main mass is magnetite, therefore
powder is of dark black color.
The obtained hematite powder is red, and the mass
completely consists of α-Fe2O3. With “Nanophox” device
accumulation curve of hematite particle distribution and
particle density-normal Gauss distribution was deter-
mined (Figures 3 and 4). From Figures is shown, that in
powder the particles (agglomerate ) with sizes till 300 nm
are 62% - 63%. The “Nanophox” device fixd also the ag-
glomerated nanopowder. Figure 5 shows graphical rep-
resentation of analysis of hematite powder stability (Pa-
tent, receiving method-registration number 11731, 15.03.
2010. Georgian National Patent Center “SAQPATENTI”)
Figure 6 shows scanning electron-microscopy represen-
tation of hematite agglomeration. Average size of the
particle 30 - 35 nm. Through sedimentation we have re-
ceived the pa r ticle si ze wi th 30 - 35 nm.
After phase analysis the physical properties of mag-
netite powder were studied on the apparatus “Nano sizer”
of Great Britain origin. Powder was screened through #
0063-8270 mesh sieve in advance.
Intensity on the offered Figures is that of the transmit-
ted laser ray, Width is a peak width and shows the parti-
cle distribution according to dimensions. The narrower a
peak, the more homogeneous is spreading.
Particle characterization is based on the average size
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Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases
Copyright © 2013 SciRes. JCT
and polydispersity index Pdl. If its value is within 0.1 -
0.5 the suspension is of good polydispersity.
Zeta potential is the poten tial of diffuse layer of a par-
ticle, which is in the solvent. If the value of Zeta-poten-
tial is within 30 mv + 30 mv, such particle has a tendency
towards aggregation.
According to the analysis the sizes of the obtained par-
ticles are redistributed mainly in two ranges/bands. Ap-
proximately 93% of particles are of 200 - 1000 nm and
their average size equals to 4786 nm. Sizes of approxi-
mately 7% of particles are within 3 - 7 mcm. Their aver-
age size is 5.41 mcm. This should be a result of nanopar-
ticles aggregation. To study the impact of further me-
chanical treatment on the sizes of the obtained particles,
experimental lot was treated in a porcelain cup, for 5
hours, in single-ball vibrating mill.
After grinding in vibrating mill for 5 hours the average
particle size is 7409 nm, polydispersity index 0.571; big
(coarse) 3 - 7 mcm size particles disappeared, general
dispersity of particles increased, which conditioned low
Zeta—potential—19.8 mv (Figures 7 and 8). This refers
to a tendency of this dispersity powder towards aggrega-
The present research aimed to create a device for hy-
perthermia. Original, alternate current feed source was
created for application of method of hyperthermia, to
achieve thermal scattering of magnetic particles [40-42]
and to obtain alternate current magnetic field. The device
is characterized by the following parameters:
Output voltage—0 - 240 V;
Current for loading—10 A (long-term regime);
Peak load—12 A;
Range of alternate current frequency—20 kHz - 295
Figure 1. X-Ray of the obtained (α-Fe2O3) hematite nanopowder.
Figure 2. X-Ray of the used magnetite (Fe3O4) micropowder.
Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases 1265
Figure 3. The curve of the particle distribution of the hematite nanopowder.
Figure 4. The compactness of the hematite nanopowder.
Figure 5. Offers graphical expression of analysis of powder stability. In the process of Analysis powder revealed homogeneity,
equal distribution according to sizes and correspondingly, good stability.
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Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases
Copyright © 2013 SciRes. JCT
Frequency alteration load—1 kHz.
Output voltage value was restricted by the terms sti-
pulated for security observance.
Schematic-construction type parameters of the above
stated feed source were experimentally correlated ac-
cording to the alternate magnetic field intensity level to
be created.
Thermocouple was used for temperature measurements
(due to small sizes and low inertia) in a set with 3.5-rate
digital tester. For elevation of accuracy of this method a
tester was calibrated at 45˚C.
For measuring of current form, value and frequency
we used electron-ray two-channel 1 MHz oscillograph.
Dada was taken at 0.1 Ohm 0.1% accuracy shunt inserted
in power circuit, at the coil, in succession.
Figure 6. Scanning electron-microscopy representation of
hematite agglomeration. Average size of the particle 30 - 35
nm. Through sedimentation we have received the particle
ize with 30 - 35 nm ×4000.
Determination of the necessary level of magnetic field s
Figure 7. Analysis of powder ground in vibrating mill for 5 hours. Dispersant—w a ter .
Figure 8. Zeta-potential of powder ground in vibrating mill for 5 hrs. Dispersant—w ater .
intensity was based on the following experiment: in 10
mm diameter PVC (polyvinylchloride) test tube, in 1
gram distilled water the 1 × 3 mm size 15 mg thin iron
plate was immersed (hereinafter referred as Tube #0). It
was considered that at definite approximation, the above
stated composition was a version corresponding to 1.5%
water solution of the tested powder. Then a tube was
placed in various intensity alternate magnetic fields.
Practically all types of toroidal, TD, E, ELP, U stan-
dard dimension magnetic conductors were tested.
Proceeding from the pursued objectives, after data cor-
relation the preference was given to U type magnetic
conductors of MnZn material, of 67/87 electromagnetic
properties. To receive the needed dimensions, alongside
with the standard magnetic conductors, we used those of
needed sizes, which were obtained by corresponding me-
Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases 1267
chanical treatment of ETD34, E42 and E52 standard
magnetic conductors.
In the bundle of magnetic conductors various size gaps
were cut: 20 mm, 16 mm, 12 mm, 10 mm and 8 mm. On
the basis of experience acquired in the process of experi-
ments 10.0 mm and 8.0 mm width gaps were given pref-
erence as working ones. Similarly, optimal dimensions of
magnetic conductors in millimeters were selected:
1) 50 × 50 × 11;
2) 60 ×50 × 12;
3) 40 × 40—area of magnetic conductor section 32
4) 40 × 30—area of magnetic conductor section 32
To cover the whole range of 20 kHz - 295 kHz fre-
quency electric coils were prepared for every magnetic
1) 42 windings—2.0 mm transform er copper conductor;
2) 36 windings—2.0 mm transform er copper conductor;
3) 34 windings—2.0 mm transform er copper conductor;
4) 30 windings—2.0 mm transform er copper conductor;
5) 30 windings—3 × 0.6 mm transformer copper con-
6) 26 windings—2.0 mm transform er copper conductor;
7) 22 windings—2.0 mm transform er copper conductor;
8) 18 windings—1.5 mm2 section mounting multithr e a d
copper conductor;
9) 16 windings—1.5 mm2 section mounting multithr e a d
copper conductor;
10) 12 windi ngs—1.5 mm 2 section m ounting multithread
copper conductor.
Magnetic conductors prepared by us together with the
above stated alternate current feed source enabled us to
carry out sets of experiments at various field intensity
and frequency.
#1 and #2, that is 5% and 10% suspensions were pre-
pared from hematite and magnetite, correspondingly.
From 8 mm diameter glass pipe the tubes were made in
which the above r eferred suspensions were pour ed.
Initially experiments were conducted at the frequen-
cies: 27.7 kHz, 33.3 kHz, 40.0 kHz, 50.0 kHz, 66.0 kHz,
100.0 kHz, 166.0 kHz, 200.0 kHz, 250.0 kHz and 290.0
By variation of voltage coming from power source we
fixed 4.0. 5.0, 8.0, 9.0 and 10.0 A current in electric coils.
Temperature monitoring was performed in 1 min, 5 min,
10 min and 15 min intervals. Expediency of continuation
of experiments in alternate magnetic field of lower than
8.0 A was practically excluded. Similarly was excluded
application of gaps width of which exceeded 10 mm.
Magnetic field intensity in 8 mm and 10 mm gaps for
magnetic conductors of the above frequencies were ob-
tained: 4200 A/winding, 4000 A/winding 3800 A/wind-
ing, 3400 A/winding, 3200 A/winding, 3000 A/winding,
2800 A/winding, 2600 A/winding.
The first series of experiments showed that tempera-
ture of solutions in tubes placed in magnetic field com-
pared to the environment temperature used to increase
within 15 minutes only by 8.0˚ - 10.0˚, inclusive 6˚ - 7˚,
within the first 5 minutes. Tube #0, when placed in ana-
logous intensity field within the first 5 minutes yielded
25˚ - 30˚ increase, inclusive 15˚ - 20˚ in the first minute.
Intensity of increase of temperature is directly propor-
tional to magnetic field intensity. In the process of ex-
periments, in gaps, at high magnetic field intensity, sig-
nificant overheating of magnetic conductors and power
winding was observed. Acco rding to measurements, tem-
perature on the surface of magnetic conductors at gaps
used to increase up to 50˚C - 70˚C during experiments.
Therefore, the impact on tubes would have been signifi-
cant too. A series of experiments was carried out that
showed that increase of temperature by 6˚C - 7˚C in 5
min period in tubes was conditioned by thermal effect of
magnetic conductor in g ap s .
As it was shown by the experiments, more powerful
device of 5 - 10 mega Herz is needed for efficient treat-
ment by magnetic hyperthermia to enable thorough acti-
vation of Neel and Brawn mechanisms at the impact of
alternate magnetic field on micro- and nanopowders ob-
tained by us. The works in this direction will be contin-
ued. We have developed also other method, a new device
for hyperthermia therapy and further works were contin-
ued at the second stage. Conditionally we called the de-
vice “Lezi” (Georgian Inteligent Privecy National Center
“SAQPATENTI”. Deponing Certificate 5054. Work: “Con-
trol Local Hyperthermia and Magnetic Hyperthermia for
Therapy of Maligna nc i es”).
Antitumoral effect of hyperthermia in experimental
cancers at the treatment by a device “Lezi”.
2.3. Experimental (Stage II)
Scientific novelty.
On the basis of experimental material the anticancer
mono-therapeutic effect of hyperthermia and its adjuvant
action in polychemotherapeutic treatment was presented
for the first time in Georgia.
With this in view rational schemes of hyperthermia
were developed.
3. Materials and Methods
3 months old 18 - 20 g albino mice (outbred, non-linear)
were used in experiments.
After selection for experiments, the mice were kept in
vivarium for 10 - 14 days at quarantine regime, accord-
ing to sex. Individual protocols were executed for each
animal. Animals were kept at similar feeding and care
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Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases
Copyright © 2013 SciRes. JCT
Experiments were carried out by the use of cancer
strain of Erlich adenocarcinoma. Inoculation of Erlich
adenocarcinoma was performed in mices, subcutaneously,
in infrascapular region.
was observed, the so called “intratumoral necrosis” was
developed in cancers—necrosis of cancer cells. This,
according to our opinion is conditioned by the effect of
Experiments were carried out by the methods widely
applied in experimental oncology. The anticancer effect
of hyperthermia was evaluated according to cancer gro wth
inhibition, frequency of intratumoral necrosis and chang es
in the data of animal life prolongation.
In the second experimental group we again studied an-
ticancer therapeutic effect of hyperthermia. On the first
day of the experiment, on 03.01.2012, subcutaneous in-
oculation of EAT cancer strain was performed. Cancer
developed in all three experimental animals.
The results will be processed by variation statistics
methods. 13.01.2012, we measured animal cancers (see Table
#2 and Figure 9). Measurements were performed after
every 3 sessions. On 13.01.2012 the first session of hy-
perthermia was carried out. These sessions were carried
out every second day. A device was placed on cancer for-
mation; at the ends of a device 43˚C - 45˚C was fixed.
Length of hyperthermia manipulation equaled to 30, 40
and 50 min, correspondingly, on I, II and III animals.
The first mouse was two-humped. Treatment was per-
formed on the right hump. After 3 sessions of the ex-
periment it was found that in all three animals inhibition
(stopping) of cancer growth was fixed, while the II and
III animals revealed development of intratumoral necro-
sis in cancers (Figure 10). In this case, again, inhibition
of cancer growth and intratumoral necrosis were condi-
tioned by the effect of hyperthermia.
4. Obtained Results and Discussion
Anticancer hyperthermic therapeutic effect of hyperther-
In the I group of mice we studied anticancer therapeu-
tic effect of hyperthermia. On the first day of the experi-
ment, on 18.11.2011, subcutaneous inoculation of EAT
cancer strain was performed. Cancer was developed in all
experimental animals.
On 28.11.2011 we measured cancers in mice (see Ta-
ble 1). Measurements were made once in three days,
while on 01.12.2011 the first session of hyperthermia was
performed. Such sessions lasted till 11.12.2011, includ-
ing this day. On a cancer formation we placed our device,
at the ends of which 43˚C - 45˚C was fixed. Length of
hyperthermia manipulation equaled to 5 - 5 minutes. In these animals measurements were made after seven
sessions. According to Table 2 and visually necrosis and
ulceration are observed, which refers to positive effect of
the experiment. After ten sessions, again vivid necrosis
and ulceration of the tumor was observed, see Figure 11.
Experiments fixed inhibition of cancer growth in the I,
III and V animals, while in the II, IV and VI animals,
where progressive growth of a size of cancer formation
Table 1. Number of sessions and date of measuring size.
28.11.11 01.12.11 04.12.11 07.12.11 11.12.11 14.12.11 17.12.11
1 3 × 3 × 3 mm 5 × 3 × 3 mm 5 × 3 × 3 mm 5 × 3 × 3 mm 5 × 3 × 3 mm 5 × 3 × 3 mm 5 × 3 × 3 mm
2 13 × 10 × 5 mm 16 × 12 × 8 mm 18 × 12 × 10 (ulceration) 1 9 × 13 × 8 mm20 × 14 × 10 mm23 × 16 × 10 mm 25 × 16 × 10 mm
3 8 × 5 × 5 mm 10 × 8 × 5 mm 11 × 8 × 5 mm 11 × 8 × 5 mm11 × 8 × 5 mm12 × 10 × 5 mm 12 × 10 × 5 mm
4 12 × 10 × 5 mm 14 × 10 × 8 mm 16 × 12 × 10 mm (ulceration)18 × 13 × 10 mm20 × 15 × 10 mm22 × 17 × 10 mm 24 × 18 × 10 mm
5 8 × 5 × 5 mm 10 × 8 × 5 mm 12 × 8 × 5 mm 12 × 8 × 5 mm12 × 8 × 5 mm12 × 10 × 5 mm 12 × 10 × 8 mm
6 12 × 8 × 8 mm 13 × 10 × 8 mm 15 × 10 × 8 mm (ulceration)16 × 10 × 8 mm18 × 10 × 8 mm19 × 10 × 8 mm 21 × 10 × 8 mm
(#1) (#2) (#3)
Figure 9. # 1 (two humped), #2 and #3 anima l s after one ses sion of treatment . 1 3.01.20 12.
Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases 1269
(#1) (#2) (#3)
Figure 10. Animals #1, #2 and #3 after 3 sessions. Intratumoral necrosis was observed in the II and III cases. In the I case
inhibition of progress of cancer was observed 18.01.2012.
Table 2. Number of sessions and date of measuring size.
Number of sessioins and date of measuring size
Animal # I
13.01.2012 II
16.01.2012 III
18.01.2012 IV
21.01.2012 VII
27.01.2012 X
1 8 × 8 × 5/
10 × 8 × 5 8 × 8 × 5/
10 × 5 × 5 10 × 8 × 5/8 × 5 × 3
(necrosis) 10 × 8 × 5/5 × 5 × 3
(necrosis) 12 × 10 × 8/5 × 5 × 3
(necrosis, ulcerarion) 10 × 10 × 8/8 × 8 × 5
(necrosis, ulceration)
2 10 × 8 × 5 10 × 8 × 5 8 × 8 × 5
(necrosis) 8 × 6 × 3
(necrosis) 16 × 12 × 5
(necrosis, ulceration) 12 × 9 × 5
(necrosis, ulceration)
3 16 × 14 × 10 16 × 14 × 10 16 × 14 × 10
(necrosis) 16 × 14 × 5
17 × 14 × 5
(necrosis, clearly
expressed ulceration)
21 × 14 × 8
(necrosis, clearly
expressed ulceration)
(#1) (#2) (#3)
Figure 11. #1. #2 and #3 animals after ten sessions. Ulceration of tumor is fixed. Necrosis is clearly expressed. 06.02.2012.
5. Conclusions
After only three sessions of hyperthermic treatment de-
crease of cancer formation sizes was visually apparent
(Table 2), while in the II and III cases, we observed ne-
crosis. After seven sessions, in all three cases, necrosis
and ulceration of cancer was observed, which refer to the
fact of passing of a tumor to healing phase. After ten
sessions we again observed necrosis and ulceration of
tumor, which refers to irreversibility of the process and
speaks of efficiency of the applied method of hyperther-
mia. In all cases inhibition of tumor growth and intratu-
moral necrosis has been conditioned by the effect of hy-
perthermia. Results of visual observations are proved for
all three animals, on the basis of measurements made af-
ter three, seven and ten sessions.
We consider expedient:
For the perfection and consolidation of the obtained
positive results, to continue experiments on animals for
the treatment of skin surface and subcutaneous diseases
as well as those of internal bodies, hyperthermic block
design of a device created by us “Lezi”, should be de-
veloped into multifunction one to enable treatment of
various size and stage cancers, and, simultaneously its
technological therapeutic parameters should be perfected.
6. Acknowledgements
We would like to express our thanks to professor of De-
partment of Chemical and Biological Technology of
Technical University of Georgia Full Prof. Mr. Ramaz
Katsarava, Mrs. Polina Toidze and Mr. Nugzar Na- di-
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Controlled Local Hyperthermia and Magnetic Hyperthermia of Surface (Skin) Cancer Diseases
rashvili for delivery of necessary material, for interest-
ing research and support. The authors thank Prof. Dr.
Jurgen Heinrich at the Institute of Non metallic Materials,
Clausthal Technical University, Germany, for His sup-
port during fulfilling the experimental works. We thank
Powder Hause of Clausthal-Zellerfeld, Germany, for per-
formed interesting research and assistance.
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