INFRA RED Infrared radiations (IRR) are electromagnetic radiation that lies within that part of electromagnetic spectrum between visible light and microwave radiation. IR has no color, it is detected by warmth IR is emitted from any heated body Its wavelength is higher than visible light IR has a wavelength of 760nm to mm
E!E"#R$ %A&NE#I" '(E"#R)% INITIAL
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WA!L!N#T$
R
RADI$*A+E'
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INFRA RED
7.0 N% #$ 0/ %%
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/00 N% #$ 7.0 N%
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0 N% #$ /00 N%
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760nm to 1 mm
"!A''IFI"A#I$N $F IR
IR IR A
IR C
760- 1400 NM
IR B
THERAPEUTIC
1400 – 3000 NM THERAPEUTIC
3000NM – 1MM NON THERAPEUTIC
%lassi&cation of infrared radiation Type
Wae!en"t#
IRA &'#o$t o$ 760 - 1400 nm nea$ IR( IRB &!on" o$ ,a$ 1400 – 3000 nm IR(
Penet$at%on ) mm $ea*# to +e$m%' Up to 1 mm to ep%+e$m%'
IRC 3000nm – 1 mm Not 'e+ t#e$apet%*a!!y
Infrared is produced as
• Infrared a result of molecular motion within heated materials. All hot bodies emit IR as increase the temperature of an material above absolute zero result in vibration and rotation of molecule within the material . • The wavelength of the emitted IR are determined b the temperature of the material. The higher the temperature of the bod the higher the fre*uenc and the shorter the wavelength.
Sources of Infrared • Natural sources+ The sun • Arti&cial sources+ ,- Luminous sources - Non-luminous sources
IR .AMP/
NON .UMINOU/ ENERATOR
.UMINOU/ ENERAT OR
Luminous Lamps ie blb8 • !lectricall heated &lament made of tungsten &lament within a glass bulb which contain an inert gas at low pressure. 'art of the glass bulb is silvered to provide a re/ector. • Luminous sources emit mainl+ - "hort or near IR (IRA) - isible light - 0ltraviolet
Non-luminous ie coil heater8 • Non-luminous sources are those which produce infrared radiation from a non-glowing source such as moist heat pac1s and non-luminous IR lamps • Non-luminous infrared lamp consists of a coiled resistance wire which embedded within a ceramic insulating material • Non - luminous sources emit mainl
long or far IR radiation.
Absorption and penetration of IRR • IRR is strongl absorbed near the s1in surface and the heat is carried to deeper tissues b conduction and b the circulating /uids. • The absorption and penetration of IRR ras depend on+
,- 2re*uenc or wavelength of the ras - Angle of incidence of the ras. 3- The intensit of the emitting source.
(ower • 'maller !am9s both lminos and non3lminos :.0 to .00 * • !arge Non3!minos 7.0 to 000 * • !arge lminos 600 to .00 *
Infrared
IRR is considered as super&cial heating modalit Cutaneous vasodilatation Erythema Increase
metabolism Neurological effect Effect on connective tissue N.B.
In*$ea'%n" t%''e eten'%2%!%ty 2y #eat%n" t#$o"# IRR %!! not +e*$ea'e 'o,t t%''e '#o$ten%n" /o %n,$a$e+ m't 2e 'e+ %n *on5n*t%on %t# 't$et*#%n" an+ ROM ee$*%'e'
4osage 'ensory re9ort of the 9atient Ad;sted by<
"hanging 9ower ot9t of the lam9 Distance of lam9 Angle of incidence
u Infrared ,. Relieve of pain . Reduction of muscle spasm
3. Acceleration of healing 5. "ubacute and chronic
in/ammation of musculos1eletal sstem
6. Reduction of chronic mild to
moderate edema 7. 'rior to stretching 8 mobili9ing e:ercises ;. "ome s1in conditions (fungal infection
%ontraindications ,. Acute in/ammation . Acute infection 3.
etal
(ro9er A99lication • "hec= for any contraindications • "lean area to be treated • (osition 9atient so that the lam9 is 9er9endiclar to the targeted tisse • Intensity< ad;st wattage or distance of lam9 • •
!minos > :/ inches Non!minos > ?: inches
• Instrct 9atient to not move • "hec= the 9atient often • Instrct the 9atient to tell the clinician of any brning sensation
$a9ards and 4angers
• ?urns • !e damage • Lowered blood 'ressure • Areas of defective arterial blood /ow • 4ehdration
