[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

1MHz频率超声波穿透深度约5cm适合深层肌肉/关节,3MHz频率穿透深度约1-2cm适合浅表软组织(如肌腱、皮下瘢痕),慢性深层痛选1MHz,浅层损伤选3MHz

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