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Answer + Analysis

1: How does the size of the spot affect the effect of laser treatment?

A. Only larger spots are effective
B. Spot size affects the accuracy and efficiency of treatment
C. Spot size only affects treatment time
D. Spot size has nothing to do with treatment effect

Answer: B

Analysis: The size of the spot is crucial to the effect of laser treatment, affecting both the accuracy and efficiency of treatment. Long-pulse lasers act on target tissues in a precise manner through the principle of selective photothermal action, and different sizes of spots can be used to adjust the depth and range of treatment. Smaller spots can act more finely on the surface of the skin or certain local areas, and are suitable for small-scale, precise treatment, such as spots and tattoos. Larger spots can cover larger areas and have higher treatment efficiency, and are suitable for treatment of larger areas of the face. Therefore, the choice of spot size needs to be adjusted according to specific treatment needs to balance the treatment effect and efficiency to achieve the best treatment results.

2: What is the role of a smaller spot in laser removal of spots and tattoos?

A. Treat a larger area
B. Improve treatment efficiency
C. Accurately treat spots or tattoo areas
D. Increase the pain of treatment

Answer: C

Analysis: When removing spots and tattoos, a smaller spot can act precisely on pigment particles or ink particles. Long-pulse lasers use selective photothermal effects to focus energy through a small spot to accurately hit pigment particles or tattoo ink in the skin. This can reduce thermal damage to surrounding normal tissues and ensure high precision and safety of treatment. For example, spots are more localized and delicate, and a smaller spot can accurately irradiate the lesion area, decompose and remove the pigment without affecting the surrounding healthy skin. Therefore, a smaller spot size can not only improve the accuracy of treatment, but also reduce the discomfort and side effects during treatment.

3: During laser skin resurfacing, how does the size of the spot affect the treatment effect?

A. A larger spot size can better remove dead skin cells
B. A smaller spot size is suitable for fine removal of dead skin cells
C. The spot size has no effect on the skin resurfacing effect
D. A smaller spot size increases the treatment time and discomfort

Answer: B

Analysis: During laser skin resurfacing, a smaller spot size can more accurately remove dead skin cells on the surface of the skin. Long pulse lasers can act on the skin surface finely through a smaller spot size, remove the aged stratum corneum layer by layer, and promote the formation of new skin. The energy focusing effect brought by the small spot size can reduce the thermal damage to the surrounding normal skin while avoiding excessive tissue damage. Under the mechanism of selective photothermal action, smaller light spots have significant effects, which can better stimulate collagen regeneration and improve skin texture. Therefore, the use of smaller light spots during skin resurfacing can not only accurately remove dead skin, but also promote skin renewal and achieve better treatment effects.

4: What are the advantages of smaller light spots when long pulse laser is used to treat the skin?

A. Increase treatment efficiency
B. Make treatment more precise
C. Shorten treatment time
D. Reduce side effects of treatment

Answer: B

Analysis: Long pulse laser uses the principle of selective photothermal action to achieve different treatment effects by adjusting the size of the light spot. Smaller light spots can concentrate the energy of the laser more on the target tissue, thereby improving the accuracy of treatment. This is especially important for treatments that require high-precision operations, such as removing fine spots, tattoos, or performing delicate skin resurfacing. Smaller spots have stronger local penetration, which can effectively avoid damage to surrounding healthy skin and reduce the risk of adverse reactions. Precise energy focusing can help achieve better treatment results, especially when facing small skin problems. Therefore, the advantage of smaller spots is to improve treatment accuracy and ensure the safety and efficiency of the treatment process.

5: In laser treatment, what kind of treatment needs are larger spots suitable for?

A. Suitable for small area fine treatment
B. Suitable for skin spots and tattoos
C. Suitable for larger area treatment
D. Suitable for deep collagen reconstruction

Answer: C

Analysis: Larger spots are suitable for larger area treatments, which can effectively improve treatment efficiency. In laser treatment, a larger spot can cover a wider skin area in a shorter time, reducing the exposure time of each point, thus speeding up the treatment process. For example, when performing facial laser resurfacing or photon treatment of the whole body skin, a larger spot can cover a larger treatment area, reducing the treatment time and patient discomfort. However, although a larger spot improves efficiency, it may not be as accurate as a small spot for deep tissue or areas that require delicate operations. Therefore, during the treatment process, it is necessary to reasonably select the spot size according to the treatment area and needs to balance efficiency and accuracy.

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