Title:
バスケット型カテーテル上に分布した超音波アレイを使用する体腔内のマッピング
Document Type and Number:
Japanese Patent JP7204493
Kind Code:
B2
Abstract:
A medical system (20) includes a shaft (22) configured for insertion into an intra-body cavity, such as a cardiac chamber; multiple ultrasound transducers (48), which are distributed over splines that form a basket catheter (40) at a distal end of the shaft, the transducers being configured to transmit ultrasonic signals in the intra-body cavity and to receive echo signals in response to the ultrasonic signals; and a processor (41) configured to calculate a surface of the intra-body cavity by processing the echo signals using an ellipsoidal back-projection method, which reconstructs ultrasound-wave reflecting surfaces by performing at least one of applying back-projection summation over sub-sets of scattered echo signals distributed over respective sub-sets of constructed ellipsoids and applying a non-linear minimum operator over each of the sub-sets of distributed echo signals to generate a respective minimum value for each sub-set.
Inventors:
Aaron Balam
Mail Bal-Tal
Arona Cigar
Mail Bal-Tal
Arona Cigar
Application Number:
JP2019001633A
Publication Date:
January 16, 2023
Filing Date:
January 09, 2019
Export Citation:
Assignee:
Biosense Webster (Israel), Ltd.
International Classes:
A61B8/12
Domestic Patent References:
| JP2015528352A | ||||
| JP2003199737A |
Foreign References:
| US5027658 |
Attorney, Agent or Firm:
Kiminobu Kato
Takafumi Oshima
Takafumi Oshima