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Answer + Analysis

1: What is the effect of laser power on treatment effect?
A) Only affects the duration of treatment
B) Directly affects the treatment effect, accuracy and safety
C) Mainly affects the color and intensity of the laser
D) Only affects the penetration depth of the laser

Answer: B
Analysis: Laser power is an important factor affecting the treatment effect. The power of the laser determines the amount of energy released by the laser at the site of action, which directly affects the effect, accuracy and safety of the treatment. For example, in laser tattoo removal treatment, high-power lasers can penetrate deep into the skin layer, quickly break up ink particles and expel them through selective photothermal effects, while low-power lasers are suitable for surface treatments, such as removing spots and fine wrinkles. Improper laser power setting may result in insignificant treatment effects or cause skin burns. Therefore, the power of the laser needs to be accurately adjusted according to different needs during treatment to ensure that both the goal of effective treatment and safety can be achieved.

2: What types of treatments are high-power lasers usually suitable for?
A) Laser Spot Removal
B) Laser Skin Tightening Treatment
C) Laser Skin Resurfacing
D) Laser Tattoo Removal

Answer: D
Analysis: High-power lasers are particularly suitable for treatment types that require strong energy output, such as laser tattoo removal. In tattoo laser treatment, the high power of the laser can generate enough heat to destroy the ink particles in the deep skin through selective photothermal effect. High-power lasers directly act on the ink particles through strong pulse energy without causing too much impact on the surrounding healthy tissue, avoiding skin damage. Low-power lasers are not suitable for deep treatment and therefore cannot effectively remove tattoos. By precisely controlling the laser power, the treatment can be safer and more efficient.

3: In laser spot removal treatment, what problems may occur if the power setting is too low?
A) Skin burns
B) Ineffective treatment
C) Pigmentation
D) No effect

Answer: B
Analysis: In laser spot removal treatment, setting the power too low will result in ineffective treatment. The basic principle of laser treatment is to focus the laser energy on the pigment particles and decompose them through selective photothermal effect. If the power is too low, the laser energy cannot effectively act on the deep pigment, and the treatment effect will be greatly reduced. Usually, the spots are located on the surface or shallow layer of the skin. The appropriate power can effectively focus the laser energy on the pigment, destroying and removing it. Too low power will not only fail to achieve the desired effect, but may also result in incomplete removal of the spots, or require multiple treatments to be effective.

4: What side effects may be caused by excessive laser power?
A) The treatment effect is not obvious
B) Skin burns or excessive damage
C) The laser cannot penetrate the skin
D) The treatment time is prolonged

Answer: B
Analysis: Excessive laser power will cause the energy in the treatment area to be too concentrated, causing skin burns or excessive damage. High-power lasers release a lot of energy quickly. If not controlled, it may cause excessive heating of the skin, redness, swelling, blisters, and even scars. This excessive heat energy may damage the structure of the skin and affect its normal repair. To avoid this, the laser power must be precisely adjusted according to the skin type, lesion depth and treatment goals during treatment. In addition, in some deep treatments, such as tattoo removal, although high-power lasers are required, precise control is still required to avoid unnecessary side effects.

5: Long pulse laser can produce stronger effects during treatment because:
A) It releases lower laser energy
B) It can release a large amount of energy in a short time
C) It can act on the target tissue for a long time
D) It can heat the surface of the skin

Answer: B
Analysis: The advantage of long pulse laser is that it can release a large amount of energy in a short time, which makes it particularly suitable for treatments that require high energy output, such as tattoo removal and deep skin lesions. The long pulse laser has a longer pulse time, allowing the laser energy to fully act in the treatment area, producing a strong selective photothermal effect, allowing the laser to accurately act on the target tissue without damaging the surrounding normal tissue. For example, in laser tattoo removal treatment, long pulse laser can effectively break up deep ink particles, while reducing damage to the epidermis through the thermal conduction of the skin. This technology can improve treatment efficiency and effectiveness without increasing treatment time.