Title:
品質管理用ファントム
Document Type and Number:
Japanese Patent JP7160276
Kind Code:
B2
Abstract:
To provide a quality control phantom that enables more accurate adjustment of a projection position and a projection direction of a line laser obtained by a line laser sighting device.SOLUTION: A quality control phantom 7 is used for quality control of a radiotherapy system 1 having a line laser sighting device 5, and comprises: a proximal-side determination unit (e.g., a part of 50A) having a proximal-side reference index (e.g., 74) as an adjustment reference index; and a distal-side determination unit (e.g., a part of 50B) having a distal-side reference index (e.g., 75) as an adjustment reference index. When the distal-side determination unit is viewed from the proximal-side determination unit, the proximal-side reference index and the distal-side reference index overlap with a virtual reference axis, and when the distal-side determination unit is viewed from the proximal-side determination unit in any of the angular directions within a range of maximum spread angular directions of a line laser, a part of the distal-side reference index does not overlap with a shading region of the proximal-side determination unit.SELECTED DRAWING: Figure 2
Inventors:
Satoshi Murasawa
Kazuharu Nishitani
Shigeo Anai
Kazuharu Nishitani
Shigeo Anai
Application Number:
JP2019059977A
Publication Date:
October 25, 2022
Filing Date:
March 27, 2019
Export Citation:
Assignee:
Satoshi Murasawa
International Classes:
A61N5/10; A61B6/00
Domestic Patent References:
| JP2019042206A | ||||
| JP2016221156A | ||||
| JP2017060551A |
Foreign References:
| US5467193 | ||||
| DE102008026607A1 | ||||
| US20150202463 | ||||
| US20180296179 |
Attorney, Agent or Firm:
Naoya Ohyuki
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