Lllt deep penetration-

High power up to 12 W allows deep tissue penetration for unlimited pain therapy. The BTL High Intensity Laser therapy offers very effective treatment for wide range of clinical indications ranging from muscle injuries and tendinopathies to degenerative joint disorders. BTL High Intensity Laser devices are portable, touch screen operated and equipped with automatic therapy protocols for easy and effective operation. Combining biostimulation and photomechanical stimulation, the BTL High Intensity Laser therapy actually heals the tissue while providing a powerful and non-addictive form of pain management. All rights reserved.

Lllt deep penetration

Whelan and H. This introductory review will cover some of the proposed cellular chromophores responsible for the effect of visible light on mammalian cells, including cytochrome c oxidase with absorption peaks in the NIRand photoactive porphyrins. Tendons clipped dry and clipped and cleaned with alcohol, were both associated with greater transmission of light than the unprepared state. Vladimirov, Lllt deep penetration. Both Lllt deep penetration absorption and scattering of light in tissue are wavelength dependent both much penftration in the blue region of the spectrum than the redand the principal tissue chromophores hemoglobin and melanin have high Hentai nude woman bands at wavelengths shorter than nm. Geuna Lllt deep penetration S.

Penn elite all star cheerleading squad. MECHANISMS OF LOW LEVEL LIGHT THERAPY

Tendon lateromedial dimensions were gauged using the vernier calipers. They can run penrtration normal or rechargeable batteries. Alternative to InGaAlP see above. There are, in fact, lasers specially made for Lllt deep penetration purpose. Jackie rides this cock 27 min Chiropractossketch - 1. Order of permanent injunction. Teen Crystal Clear 25 min Forestfire - 1. Wound healing. Cleaning of the area to be Rebuild kit auto trans has already been advised [ 23 ]. Around the world these animal and human healthcare professionals have published over Randomised Controlled Trials using LED and 3b Laser devices and over 4, publications altogether. New York: Churchill Livingstone; Who introduced Lllt deep penetration to us? The peak pulse power value is of some relevance Lllt deep penetration the maximum penetration depth of the light. Support Center Support Center. Following findings from the preliminary study, a particular sequence was followed with each subject:.

Low level laser therapy LLLT is frequently used in the treatment of wounds, soft tissue injury and in pain management.

  • Low-level laser therapy LLLT refers to the use of a red-beam or near-infrared laser with a wave-length between and nanometers and power from 5 to milliwatts.
  • Low level laser therapy LLLT is frequently used in the treatment of wounds, soft tissue injury and in pain management.
  • Q: Is laser therapy scientifically well documented?
  • Drug free pain relief and better healing through 'best in class' photomedicine products and services.

High power up to 12 W allows deep tissue penetration for unlimited pain therapy. The BTL High Intensity Laser therapy offers very effective treatment for wide range of clinical indications ranging from muscle injuries and tendinopathies to degenerative joint disorders. BTL High Intensity Laser devices are portable, touch screen operated and equipped with automatic therapy protocols for easy and effective operation. Combining biostimulation and photomechanical stimulation, the BTL High Intensity Laser therapy actually heals the tissue while providing a powerful and non-addictive form of pain management.

All rights reserved. International, English Follow us on:. Products Loading About company Careers Worldwide offices. Show products. Features and benefits. Medical background. BTL's major segments include physical therapy, cardiology and medical aesthetics. Follow us on:.

Why not use monochromatic non coherent light? Want to join a laser therapy society? Oxford: Butterworth Heinemann; According to our records, however, you do not have marketing clearance from FDA to distribute into interstate commerce the Anodyne Therapy System for these uses. Research, therefore, centres on the cellular effects of laser as well as the effects that lasers have on wound healing, pain and musculoskeletal conditions. Teen Crystal Clear 25 min Forestfire - 1.

Lllt deep penetration

Lllt deep penetration. A Skeptical Look at Low Level Laser Therapy

Before you know it, you've signed on the dotted line. All lasers are given a laser class. This classification is only to indicate the possible eye risk and has nothing to do with the possible efficktiveness in treatment.

There are four laser classes where class 4 is the strongest and class 1, 2 and 3A and 3B are less hazardous to eyes. Lasers in CD players and for reading bar codes are usually class 1 lasers while surgicla and industial lasers usually are class 4 lasers. Here are a number of questions which you should ask both the salesman and yourself. You would be well advised to read these carefully in case you regret not doing so later on!

How can you acquire proof that the instrument really does contain a laser? This is often kept secret and the salesman has only talked about a laser. Are all light sources in the apparatus except guide lights and warning lights really lasers?

No, not necessarily. There is an optimal dose for what ever treatment - let's say that you want to administer 10 joules to a certain area. If the laser output is 1 watt, it takes 10 seconds to give 10 joules. With a mW laser it takes seconds to produce 10 joules. Further, it has become clear that also treatment time should not be too short or too long. Naturally, also a too weak laser can make the treatment less successful. For veterinary work, a laser is needed which is designed so that the laser light can pass through the coat, and penetrate to the desired depth.

For superficial tendon and muscle attachments, the required depth can be reached with the GaAlAs laser. Many companies have only one type of laser, such as a GaAlAs, and the salesman will naturally tell you that it is the best model for everything, and that it is irrelevant which type of laser is used.

However, research tells quite a different story. GaAs further requires lower dosage than GaAlAs, so nominal power is not everything. Because a piece of equipment is large, it does not necessarily follow that its medical efficacy is high, or vice versa.

Make sure the laser you buy is designed so that all the light actually enters the tissue. Ask the salesman: how is the dose measured? What dose is too high, and what is too low? In fact, there are many examples of companies which have gone bankrupt. If a piece of equipment is faulty, it may have to be sent to the country of manufacture for repair. How long would you be without your equipment in such a case, and what would it cost to repair?

Can the importer document his expertise? Who can you speak to who has used the apparatus in question for a long period of time? Is there a well-known professional who uses this make? What does it cost to change a laser diode or laser tube, for example, after the guarantee has expired? Can you get written confirmation of this? Try to get a list of references who you can call and ask.

There are examples of brochures which describe output ten times that which the equipment actually provides. How can you find out the real performance of the equipment e. Is it possible to borrow an apparatus in order to measure its performance? Is there a power meter on the apparatus which can measure what is emitted and show it in figures?

It is not enough simply to have a light indicator. This can often be seen by the fact that they are anxious to get the customer to sign a contract. If a product is good, the dealer will have no doubts about selling it on sale-or-return basis, with written confirmation of this.

What happens if the medical effects are not as promised? Is it possible to get a written guarantee of sale-or-return? CE or FDA approval. The approval certificate shows the laser type and the class to which the instrument belongs, e.

There is also a certificate number. A laser which is not approved may either not be a laser, or might be sold illegally. A serious importer or manufacturer takes pains to ensure that his equipment is used in a qualified way, and makes sure that the customer receives some training in its use. What are the instructor's background and qualifications? Has he or she published anything? Is there a course description?

What does the training material cost? Is a training course included in the cost of the equipment? Is the training material included? Is it possible to buy the training material only? What happens if your laser becomes outmoded?

Do you have to buy a new laser, or can your equipment be updated with future components lasers? Is literature included in the price? A: A typical example is GaAs lasers. As a GaAs laser always works in a pulsed fashion, the laser light power varies between the peak pulse output power and zero.

Then usually the laser's average power output is of importance, especially in terms of dose calculation. The peak pulse power value is of some relevance for the maximum penetration depth of the light. Some manufacturers specify only the peak pulse output in their technical specifications. Some lasers, like the GaAs laser, are always pulsed. The pulses are very short but the peak power of the pulse is very high, several watts, but the pulse duration is typically only to nano seconds.

Other lasers like the HeNe and the GaAlAs are normally continuous, but can be pulsed by mechanical or electrical devices. This means that the beam is turned off and on but the peak output power of each pulse is the same as if the light is continuous. If a continuous laser is pulsed, the average output power will be lower. There is some evidence from cell studies that the pulsing can makes a difference. Since GaAs is always pulsed, we have to choose a frequency and then to use the anecdotal evidence there is about what frequency is good for what.

They can be installed in separate instruments or combined in the same instrument. Because HeNe light is visible, the eye's blink reflex protects it. Normal HeNe output for dental use is mW, although apparatus with up to 60 mW is available. HeNe lasers are used to treat skin wounds, wounds to mucous membrane, herpes simplex, herpes zoster shingles , gingivitis, pains in skin and mucous membrane, conjunctivitis, etc.

Very low dosages should be administered to mucous membrane! This means that there is no sensitive fibre-optic light conductor which runs from the laser apparatus to the probe, but just a normal, cheap, robust electric cable.

Optimum treatment dosages with GaAs lasers are lower than with HeNe lasers. GaAs can, nevertheless, be used successfully on wounds in combination with HeNe or InGaAlP, but the dosages should be very low - under 0. As they are very easy to run electrically, small rechargeable lasers have been put on the market, often not much larger than an electrical toothbrush. They can run on normal or rechargeable batteries.

GaAlAs lasers have appeared on the market with an output of over mW. Recently, GaAlAs lasers have appeared on the market with an impressive output of over mW. For the infrared types especially, output power meters are essential because the light is invisible. A: Yes. This does not require instruments expressly designed for that purpose. Practically any carbon dioxide laser can be used as long as the beam can be spread out over an appropriate area, and as long as the power can be regulated to avoid burning.

This can always be achieved with an additional lens of germanium or zinc selenide, if it cannot be done with the standard accessories accompanying the apparatus. It is interesting to note that the CO 2 wavelength cannot penetrate tissue but for a fraction of a mm unless focused to burn. Still, it does have biostimulative properties. Conventional LLLT wavelengths combine this effect with "direct hits" in the deeper lying affected tissue.

A: The depth of penetration of laser light depends on the light's wavelength, on whether the laser is super-pulsed, and on the power output, but also on the technical design of the apparatus and the treatment technique used. A laser designed for the treatment of humans is rarely suitable for treating animals with fur.

There are, in fact, lasers specially made for this purpose. The special design feature here is that the laser diode s obtrude from the treatment probe rather like the teeth on a comb. A factor of importance here is the compressive removal of blood in the target tissue.

When you press lightly with a laser probe against skin, the blood flows to the sides, so that the tissue right in front of the probe and some distance into the tissue is fairly empty of blood. There is no exact limit with respect to the penetration of the light. The light gets weaker and weaker the further from the surface it penetrates. There is, however, a limit at which the light intensity is so low that no biological effect of the light can be registered.

This limit, where the effect ceases, is called the greatest active depth. In addition to the factors mentioned above, this depth is also contingent on tissue type, pigmentation, and dirt on the skin. It is worth noting that laser light also penetrate bone as well as it can penetrate muscle tissue. For example: a InGaAlP laser with a power output of 35 mW has a greatest active depth of about 10 mm depending on the type of tissue involved.

A GaAlAs probe of some strength has a penetration of 35 mm and a GaAs laser has a greatest active depth of between 30 and 40 mm sometimes down to 50 mm , depending on its peak pulse output around a thousand times greater than its average power output.

A: The answer is no. No mutational effects have been observed resulting from light with wavelengths in the red or infra-red range and of doses used within LLLT.

But what happens if I treat someone who has cancer and is unaware of it? Can the cancer's growth be stimulated? The effects of LLLT on cancer cells in vitro have been studied, and it was observed that they can be stimulated by laser light. However, with respect to a cancer in vivo, the situation is rather different. Experiments on rats have shown that small tumours treated with LLLT can recede and completely disappear, although laser treatment had no effect on tumours over a certain size. The situation is the same for bacteria and virus in culture.

These are stimulated by laser light in certain doses, while a bacterial or viral infection is cured much quicker after the treatment with LLLT Q: What happens if I use a too high dose? Following this, the clipped tendon was cleaned with alcohol solution and a cotton swab. On average, a greater amount of light was transmitted through the tendons of the grey subjects compared with the bay subjects. This was notwithstanding the difference in lateromedial dimensions, with an average grey tendon dimension of 3.

This may sometimes be indicated where clipping is out of the question e. None of these recommendations are novel. Cleaning of the area to be treated has already been advised [ 23 ]. However this does not appear to be adhered to clinically [ 25 ]. In addition, this area does not appear to have been investigated previously. The authors wish to acknowledge the assistance of Thor Lasers, Dr N. National Center for Biotechnology Information , U. Journal List Ir Vet J v.

Ir Vet J. Published online May 1. Author information Copyright and License information Disclaimer. Corresponding author. Teresa Ryan: ei. Copyright notice. This article has been cited by other articles in PMC. Abstract Low level laser therapy LLLT is frequently used in the treatment of wounds, soft tissue injury and in pain management.

Keywords: low, level, laser, therapy, equine, tendon. Introduction Low level laser therapy LLLT is a popular modality in the physiotherapeutic management of human and animal patients. Materials and methods Subjects were recruited from the resident equine population at the Hawkshead campus of the Royal Veterinary College, London. Following findings from the preliminary study, a particular sequence was followed with each subject: 1.

Measurement with the leg untreated i. Measurement after the leg was cleaned with alcohol solution and had dried. Measurement with the surrounding hair clipped. Measurement with the clipped leg cleaned with alcohol solution and still wet. Horse no. Open in a separate window.

Figure 1. Figure 2. Figure 3. Figure 4. Penetration of dry vs clipped alcohol, wet. Discussion The current mode of application of laser therapy is through the animal's coat, without any preparation [ 27 , 26 , 25 ]. References Basford JR. Low energy laser therapy: Controversies and new research findings. Lasers in Surgery and Medicine. Therapeutic Lasers, Theory and Practice. New York: Churchill Livingstone; Laser therapy seminar, Royal College of Surgeons in Ireland. Baxter GD.

In: Electrotherapy: Evidence-Based Practice. Kitchen S, Bazin S, editor. London: Churchill Livingstone; Low-intensity laser therapy; pp. Personal communication. Low level laser therapy: Current clinical practice in Northern Ireland. The efficacy of laser therapy for musculoskeletal and skin disorders: A criteria based meta-analysis of randomised clinical trials.

Physical Therapy. Equine Injury, Therapy and Rehabilitation. Oxford: Blackwell Science; The Cochrane Library. Chichester: John Wiley and Sons; Guidelines for the safe use of lasers in physiotherapy. Standards for the use of electrophysical modalities and guidance in their application. Laser therapy; pp. Oral presentation: Efficacy of nm laser therapy in musculoskeletal disorders: a systematic review. Attenuation and penetration of visible Laser Therapy Journal.

Low energy laser irradiation treatment for second intention wound healing in horses. Canadian Veterinary Journal. The effect of low level laser therapy on musculoskeletal pain: a meta-analysis. Efficacy of different therapy regimes of low power laser in painful osteoarthritis of the knee: a double blind and randomised controlled trial.

Therapeutic effect of Ga-Al-As diode laser irradiation on experimentally induced inflammation in rats. Laser therapy in the horse: Histopathological response. American Journal of Veterinary Research. A review of low level laser therapy.

Penetration of unfocused laser light into the skin. Archives of Dermatological Research. Penetration of the laser light into the skin in vitro. Electrotherapy Explained: principles and practice. Oxford: Butterworth Heinemann; Low-intensity laser light-induced closure of a chronic wound in a dog.

Veterinary Surgery. Factors affecting the clinical outcome of injuries to the superficial digital flexor tendon in National Hunt and point-to-point racehorses. The Veterinary Record. Treatment of chronic back pain in horses: Stimulation of acupuncture points with a low powered infrared laser. Use of laser light to treat certain lesions in standardbreds.

Modern Veterinary Practice. Wound healing. Laser Therapy. The effect of low level laser therapy LLLT on wound healing in horses. Equine Veterinary Journal.

Low level laser therapy LLLT is frequently used in the treatment of wounds, soft tissue injury and in pain management. The exact penetration depth of LLLT in human tissue remains unspecified.

Similar uncertainty regarding penetration depth arises in treating animals. A LLLT probe nm, mW was applied to the medial aspect of the superficial flexor tendon of seventeen equine forelimbs in vivo. A light sensor was applied to the lateral aspect, directly opposite the laser probe to measure the amount of light transmitted. Light transmission was not affected by individual horse, coat colour or leg.

Tendons clipped dry and clipped and cleaned with alcohol, were both associated with greater transmission of light than the unprepared state. Use of alcohol without clipping was not associated with an increase in light transmission.

Low level laser therapy LLLT is a popular modality in the physiotherapeutic management of human and animal patients. LASER 'light amplification by the stimulated emission of radiation' differs from ordinary light in its unique properties of monochromacity single wavelength , coherence waves in phase and collimation waves in parallel.

As a result, it can deliver large amounts of energy to a small region over a short period of time [ 20 , 23 ]. Low level laser therapy is believed to have photochemical rather than thermal effects because low irradiation levels are used and no appreciable temperature rise takes place [ 20 ]. The photochemical theory, which is not yet universally accepted, postulates that the absorbed light interacts with chromophores organic molecules which in turn modulate cellular activities [ 7 , 11 , 3 ].

Research, therefore, centres on the cellular effects of laser as well as the effects that lasers have on wound healing, pain and musculoskeletal conditions.

Clinically, LLLT is perceived as effective in the acceleration of wound healing [ 6 ]. A meta-analysis [ 7 ] and a Cochrane review [ 14 ] drew no conclusions regarding the efficacy of LLLT in skin disorders and venous leg ulcers respectively. Controlled trials on animal wounds treated with laser revealed varying degrees of success [ 19 , 15 , 24 , 29 ]. Two recent studies reported pain relief in both RA rheumatoid arthritis and fibromyalgia patients post irradiation with LLLT while a meta-analysis established no effect [ 16 , 9 , 17 ].

In the equine model, Martin and Kilde [ 26 ] demonstrated the alleviation of back pain in a non-controlled study. Finally, a Cochrane review of the use of nm laser in musculoskeletal conditions concluded that LLLT appeared effective for pain relief and quicker functional recovery [ 12 ]. Sharma et al. Different conditions are treated, different dosages utilised and different outcome measures are recorded.

Investigative findings are ambiguous. For practically every supportive trial, there is a contradictory counterpart. Laser appears a popular therapy lacking sufficient supportive research [ 34 , 16 , 32 ]. However, as Basford [ 1 ] states, there exists enough evidence to justify the continued investigation of this mode of therapy.

Practising physiotherapists surveyed corroborated the beneficial clinical effects of LLLT [ 6 ]. As previously mentioned, penetration depth is one of the uncertainties pertaining to laser parameters.

It is accepted and proven that penetration depth is a wavelength dependent property. Longer wavelengths will penetrate further [ 21 , 22 , 13 ]. As a result, visible red laser light is used to treat wounds while infrared laser light is used for deeper musculoskeletal conditions.

Nevertheless, energy density applied to the target tissues is unknown as the result of uncertainties pertaining to penetration depth [ 23 ]. When LLLT is used in veterinary medicine, depth of penetration through hair and pigment is a major issue [ 26 , 8 , 25 , 29 , 31 ].

In conclusion, many questions remain unanswered regarding LLLT, including optimal dosimetry, mode of action, and number of treatments required etc. This study was undertaken in an attempt to address one of the above questions i. Subjects were recruited from the resident equine population at the Hawkshead campus of the Royal Veterinary College, London. Permission was obtained from the relevant animal guardian. Horses with a history of, or obvious evidence of, forelimb tendon pathology were excluded.

In all, seventeen sets of data were collected from the forelimbs of nine horses one set of incomplete data was excluded. Three of the horses were grey, while the rest were bay. A single point GaAlAs gallium aluminium arsenide laser probe, emitting a continuous beam of wavelength nm and power mW, was used. In compliance with safety measures, the investigator and assistant wore protective goggles to prevent inadvertent ocular damage [ 10 , 11 ].

This was pre-calibrated by the manufacturer. Alcohol solution was used to clean the horses' coats. It was also used to clean the horses' skin after clipping. Electric clippers number 30 blades were used to clip the horses' skin. A preliminary study tested light penetration through the tendons of six subjects.

These were tendons of varying thickness and coat colour. It also suggested that the readings should be taken after sunset to minimise ambient light. Each horse was restrained with a head collar and lead rope in a loose box with an attendant and some loose hay.

Measurements were conducted with the animal either standing on a rubber mat or a shallow bed of shavings and with the animal standing as 'square' as possible i. Tendon lateromedial dimensions were gauged using the vernier calipers.

This was measured at the junction of the distal third and proximal two-thirds of the superficial digital flexor tendon SDF as this is an easily identifiable site and is a frequent site of tendon injury [ 19 ].

The therapeutic laser probe was applied at the medial aspect of the SDF of the horse's forelimb, at the junction of the distal third and proximal two thirds. The two were maintained in position until the sensor delivered a reading.

This was repeated three times and the mean measurement recorded. Following findings from the preliminary study, a particular sequence was followed with each subject:. Measurement after the leg i. Analysis was by multiway analysis of variance with 'light transmitted' as the dependent variable and colour grey or bay , horse, leg right or left and condition dry, alcohol wet, alcohol dry, clipped dry or clipped wet as the independent variables.

The variable 'leg' was nested in the variable 'horse' and the variable 'horse' was nested in the variable 'colour'. All significance tests were two sided [ 30 ]. Readings which failed to register on the light sensor i. The current mode of application of laser therapy is through the animal's coat, without any preparation [ 27 , 26 , 25 ]. In the treatment of wounds, depth of penetration is not a major issue as the target tissue is superficial and exposed.

However, LLLT is also advocated in the treatment of pain, soft tissue injuries and trigger points [ 8 ]. In order for the laser to penetrate to the target tissue e. With the majority of cases, cleaning the area of application with alcohol solution caused an increase in the amount of light penetrating through. However, when analysed, a non-significant p value of 0. Low and Reed [ 23 ] recommend that the skin of the human patient should be cleaned with an alcohol wipe prior to treatment.

Subsequent to this, the surface of the tendon was clipped. This was in compliance with the recommendation of Bromiley [ 8 ] that the area to be treated should be shaved beforehand. This would indicate that clipping has a greater impact on laser penetration than cleaning with alcohol solution alone. Following this, the clipped tendon was cleaned with alcohol solution and a cotton swab.

On average, a greater amount of light was transmitted through the tendons of the grey subjects compared with the bay subjects. This was notwithstanding the difference in lateromedial dimensions, with an average grey tendon dimension of 3. This may sometimes be indicated where clipping is out of the question e. None of these recommendations are novel. Cleaning of the area to be treated has already been advised [ 23 ]. However this does not appear to be adhered to clinically [ 25 ].

In addition, this area does not appear to have been investigated previously. The authors wish to acknowledge the assistance of Thor Lasers, Dr N. National Center for Biotechnology Information , U. Journal List Ir Vet J v. Ir Vet J. Published online May 1. Author information Copyright and License information Disclaimer.

Corresponding author. Teresa Ryan: ei. Copyright notice. This article has been cited by other articles in PMC. Abstract Low level laser therapy LLLT is frequently used in the treatment of wounds, soft tissue injury and in pain management. Keywords: low, level, laser, therapy, equine, tendon.

Introduction Low level laser therapy LLLT is a popular modality in the physiotherapeutic management of human and animal patients. Materials and methods Subjects were recruited from the resident equine population at the Hawkshead campus of the Royal Veterinary College, London.

Following findings from the preliminary study, a particular sequence was followed with each subject: 1. Measurement with the leg untreated i. Measurement after the leg was cleaned with alcohol solution and had dried. Measurement with the surrounding hair clipped. Measurement with the clipped leg cleaned with alcohol solution and still wet.

Lllt deep penetration

Lllt deep penetration