Optimization of pressure field in shock wave lithotripsy: pressure waveform, distribution and sequence - Couverture souple

Zhou, Yufeng

Couverture souple

ISBN 10 : 3639190327 ISBN 13 : 9783639190328

Editeur : VDM Verlag Dr. Müller, 2011

Synopsis

Shock wave lithotripsy (SWL) has revolutionized the calculus treatment, but it also produces acute renal injury. If the stone is larger than 20 mm or located in anatomically difficult locations, SWL is poor and even fails. This work aims to increase stone fragmentation while reducing simultaneously the propensity of injury in SWL. First, large intraluminal bubble expansion was found to constitute a mechanism of SWL-induced vascular injury. In situ pulse superposition technique was then developed by fitting an insert with the lithotripter reflector. It could significantly reduce the propensity of vessel rupture while maintaining satisfactory stone fragmentation. Second, an auxiliary shock wave was used to intensify the collapse of bubbles near the target stone. Performances of both techniques were evaluated in vivo with promising results. All together, it has been shown that optimization of lithotripter pressure waveform, distribution, and sequence can improve the lithotripter performance. This investigation may shed some light on the research of therapeutic ultrasound, and should be especially useful to practicing urologists, or lithotripter manufacturers.

Détails de l'édition

• Éditeur: VDM Verlag Dr. Müller
• Date d'édition: 2011
• Langue: anglais
• ISBN 10: 3639190327
• ISBN 13: 9783639190328
• Reliure: Broché
• Nombre de pages: 212
• Coordonnées du fabricant: non disponible
• Personne responsable: non disponible