发明名称 |
Image analysis apparatus, method, and program |
摘要 |
An image analysis apparatus that analyzes, based on a series of three-dimensional images of lungs at different time phases, a three-dimensional distribution of ventilation volume of the lungs, includes a lung region extraction unit that extracts a lung region from each of the three-dimensional images; an alignment unit that aligns the lung regions between the series of three-dimensional images and calculates a displacement vector field in the lung region; a function calculation unit that calculates a local ventilation volume function representing a temporal change in ventilation volume at each point in the displacement vector field in each of the three-dimensional images based on the displacement vector field; and a quantification unit that quantifies a difference between the local ventilation volume function and a benchmark ventilation volume function serving as a reference and calculates a quantitative value representing the difference. |
申请公布号 |
US9117287(B2) |
申请公布日期 |
2015.08.25 |
申请号 |
US201414489529 |
申请日期 |
2014.09.18 |
申请人 |
Fujifilm Corporation |
发明人 |
Masumoto Jun |
分类号 |
G06K9/00;G06T7/20;A61B6/03;A61B6/00;A61B5/055;A61B5/113;G06T7/00;A61B5/091 |
主分类号 |
G06K9/00 |
代理机构 |
McGinn IP Law Group, PLLC |
代理人 |
McGinn IP Law Group, PLLC |
主权项 |
1. An image analysis apparatus that analyzes, based on a series of three-dimensional images of lungs at different time phases, a three-dimensional distribution of ventilation volume of the lungs, the apparatus comprising:
a lung region extraction unit that extracts a lung region from each of the three-dimensional images; an alignment unit that aligns the lung regions between the series of three-dimensional images and calculates a displacement vector field in the lung region; a function calculation unit that calculates a local ventilation volume function representing a temporal change in ventilation volume at each point in the displacement vector field in each of the three-dimensional images based on the displacement vector field; and a quantification unit that quantifies a difference between the local ventilation volume function and a benchmark ventilation volume function serving as a reference and calculates a quantitative value representing the difference. |
地址 |
Tokyo JP |