체외충격파치료(Extracorporeal Shock Wave Therapy, ESWT)

소개

근골격계질환에서 체외충격파치료(Extracorporeal Shock Wave Therapy, ESWT)에 관한 PPT입니다. 10~20여 해외 논문들을 참고문헌으로 만들었습니다.

목차

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본문내용

high-energy waves with a large amplitude, characterized by extremely short build-up times
: rapid rise in pr, to 90% of maximum pr. (≥ 10 MPa) within 10 nsec.
generated by processes that are similar to explosions
characterized by a surge-type pressure distribution
Energy flux density (EFD) per impulse (mJ/mm2)
- Low : 0.08 0.27
- Mid : 0.28 0.59
- High : ≥ 0.60
(Bachmann et al)
- Low : <0.1
- High : 0.2-0.4
(Loew et al)
Shockwaves
Pressure waves
- generated outside the body
- focused on specific site
- transmitted to the patient through either water or a coupling gel
- non-invasive treatment of injuries
: able to pass the shockwaves through the uninjured portions of the body without any effect, and deliver the energy to a focus point at the level of the injured tissue
ESWT
Piezoelectric system
Electromagnetic system
Electrohydraulic system
3 Systems of ESWT
작은 크기의 다수의 piezoelectric elements를 조합하여 배열하고 각
소자들의 개별적인 충격파를 집속시켜 충격파에너지를 얻는 방법.
Advantages
: focusing accuracy, long service life, performed without anesthesia
Disadvantage
: insufficient power -> repeated treatments to obtain the desired effect
Piezoelectric system (피에조 방식)
코일과 금속판으로 구성되어있으며, 코일에 강한 임펄스 전류를 흘려주면 코일에 유도된 자장에 의해 금속판이 미세하게 진동하게 되는데 이를 충격파원(shock wave source)으로 사용.

참고자료

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