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Answer + Analysis

1. Which aspect of medical beauty is laser stability crucial to?
A) Cost control
B) Treatment effect and safety
C) Appearance of the device
D) Patient satisfaction
Answer: B
Analysis: The stability of the laser directly affects the treatment effect and safety in medical cosmetology, especially in long-pulse laser treatment. If the energy output of the laser is unstable, the effect of selective photothermal effect will be affected. Selective photothermal effect refers to the absorption of laser energy by specific target tissues, thereby achieving precise treatment. If the laser output fluctuates, it may lead to inconsistent treatment effects and even damage or adverse reactions to the skin. Therefore, in order to ensure the effectiveness of treatment and the safety of patients, laser equipment must have good stability.

2. What problems may be caused by laser intensity fluctuations?
A) Overheating of the equipment
B) Increased costs
C) Unstable treatment effects
D) Decreased number of patients

Answer: C
Analysis: Fluctuations in laser intensity directly affect the effectiveness of treatment. In long-pulse laser treatment, stable intensity is essential to ensure effective removal of pigments or tattoos. Unstable intensity may result in insufficient photothermal effect, which in turn fails to effectively destroy the target tissue. This not only affects the treatment effect, but may also require patients to receive more treatments, increasing their overall medical costs and time investment. For doctors, ensuring stable laser intensity is key to achieving the desired treatment effect.

3. Which factor may affect the wavelength stability of the laser?
A) The light in the treatment environment
B) The patient's skin type
C) Therapist's experience
D) Aging of laser components

Answer: D
Analysis: The optical and electrical components of the laser will age over time, affecting the stability of the wavelength. The key to laser treatment is the selection of its wavelength. A specific wavelength can be effectively absorbed by the target tissue, and the wavelength change caused by aging will affect the effectiveness of selective photothermal effect. If the wavelength is unstable, it may reduce the absorption capacity of the target tissue, thereby reducing the treatment effect. In addition, maintenance and regular calibration of the equipment are also necessary measures to ensure wavelength stability.

4. What measures can be taken to reduce the fluctuation of laser output?
A) Adjust device parameters at will
B) Temperature control system and stable power supply
C) Shorten treatment time
D) Increase the number of treatments

Answer: B
Analysis: Modern laser devices are usually equipped with a temperature control system that can maintain the device within the optimal operating temperature range, thereby reducing the fluctuation of laser output. At the same time, a stable power supply can ensure that the laser provides a consistent power supply during operation, avoiding changes in laser output caused by unstable power. These measures are particularly important for the effect of long-pulse lasers, because this treatment method relies on precise energy delivery and selective photothermal effects. Maintaining the stability of the equipment is the basis for achieving efficient and safe treatment.

5. Which aspect of treatment efficiency will be affected by laser fluctuations?
A) Treatment time and number of treatments required
B) Equipment life
C) Patient comfort
D) Therapist's operating time

Answer: A
Analysis: The fluctuation of laser output directly affects the efficiency of treatment, especially in long-pulse laser applications. If the laser intensity is unstable, it may lead to insufficient energy, making it impossible to achieve effective selective photothermal effect. This means that patients may need to undergo multiple treatments to achieve the desired effect, which prolongs the treatment time and increases the overall medical cost. Therefore, ensuring the stability of the laser not only helps to improve the treatment effect, but also optimizes the patient's experience and satisfaction, and reduces unnecessary treatment times and time investment.

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