Research and Exploration on Improvement of HIFU Focal Spot Accuracy
- VernacularTitle:提高HIFU焦斑精度的研究与探索
- Author:
Jianqi ZHANG
- Publication Type:Journal Article
- Keywords:
HIFU;
acoustic field;
focal spot;
coincident accuracy
- From:
Chinese Medical Equipment Journal
1989;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To improve HIFU focal spot accuracy.Methods Combining with actual production,the influencing factors of ultrasound spot accuracy were analyzed from the aspect of mechanical equipment.In order to ensure the first focal accuracy,suitable piezoelectric ceramics flakes were selected by measuring single probe acoustic field.Reasonable designing projection planning was used to ensure the second focal accuracy.Results By means of general positioning of H7h6 clearance fit,focal spot accuracy error of ?66mm probe was kept under 0.05mm.If(?+?)was kept under 0.12?,the focal spot accuracy could be controlled under 0.5mm.Conclusion During the development of HIFU,focal spot accuracy can be improved by taking effective measures to ensure two focal accuracies.[Chinese Medical Equipment Journal,2008,29(2):28-30]
