Radiographic image processing device, method, and program

Patent metadata

Field	Value
Publication number	US-2016235384-A1
Application number	US-201615141167-A
Country	US
Kind code	A1
Filing date	Apr 28, 2016
Priority date	Nov 6, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

It is detected whether a grid stripe is present in a radiographic image. In a case in which the grid stripe is detected, a process of removing the grid stripe from the radiographic image is performed and the radiographic image is displayed. In a case in which the grid stripe is not detected, a process of removing a scattered component from the radiographic image is performed and a radiographic image subjected to the scattered radiation removal process and a radiographic image before the process are displayed.

First claim

What is claimed is:

1 . A radiographic image processing device comprising:
an image acquisition unit for acquiring a radiographic image which is captured by irradiating a subject with radiation; a grid stripe detection unit for detecting whether a grid stripe, which is a stripe pattern caused by a grid used during imaging, is present in the radiographic image; a grid stripe removal unit for performing a grid stripe removal process for the radiographic image in a case in which the grid stripe is detected; a scattered radiation removal unit for performing a scattered radiation removal process of removing a scattered component included in the radiation that is transmitted through the subject during imaging from the radiographic image in a case in which the grid stripe is not detected; and a display control unit for displaying a radiographic image subjected to the grid stripe removal process on a display unit in the case in which the grid stripe is detected and displaying a radiographic image subjected to the scattered radiation removal process and a radiographic image before the scattered radiation removal process on the display unit in the case in which the grid stripe is not detected.

2 . The radiographic image processing device according to claim 1 , further comprising:
a control unit for deleting the radiographic image before the scattered radiation removal process in response to an operation of an operator in the case in which the grid stripe is not detected.

3 . The radiographic image processing device according to claim 2 ,
wherein the operation of the operator is an image decision operation which is performed after the radiographic image is checked.

4 . The radiographic image processing device according to claim 1 , further comprising:
a storage unit for storing the radiographic image subjected to the scattered radiation removal process and the radiographic image before the scattered radiation removal process in the case in which the grid stripe is not detected and deleting the radiographic image before the scattered radiation removal process after a predetermined period of time has elapsed.

5 . The radiographic image processing device according to claim 1 , further comprising:
a scattered radiation dose estimation unit for estimating a scattered radiation dose of the radiographic image in the case in which the grid stripe is not detected, and a determination unit for determining whether the grid has been used on the basis of the scattered radiation dose, wherein the scattered radiation removal processing unit performs the scattered radiation removal process in a case in which it is determined that the grid has not been used.

6 . The radiographic image processing device according to claim 1 , further comprising:
a scattered radiation dose estimation unit for estimating a scattered radiation dose of the radiographic image in the case in which the grid stripe is not detected; and a determination unit for determining whether the grid has been used on the basis of the scattered radiation dose, wherein the display control unit determines which of the radiographic image subjected to the scattered radiation removal process and the radiographic image before the scattered radiation removal process is displayed, on the basis of the determination result.

7 . A radiographic image processing method, comprising:
acquiring a radiographic image which is captured by irradiating a subject with radiation; detecting whether a grid stripe, which is a stripe pattern caused by a grid used during imaging, is present in the radiographic image; performing a grid stripe removal process for the radiographic image in a case in which the grid stripe is detected; performing a scattered radiation removal process of removing a scattered component included in the radiation that is transmitted through the subject during imaging from the radiographic image in a case in which the grid stripe is not detected; and displaying a radiographic image subjected to the grid stripe removal process on a display unit in the case in which the grid stripe is detected and displaying a radiographic image subjected to the scattered radiation removal process and a radiographic image before the scattered radiation removal process on the display unit in the case in which the grid stripe is not detected.

8 . A non-transitory recording medium having stored therein a radiographic image processing program that causes a computer to perform:
a step of acquiring a radiographic image which is captured by irradiating a subject with radiation; a step of detecting whether a grid stripe, which is a stripe pattern caused by a grid used during imaging, is present in the radiographic image; a step of performing a grid stripe removal process for the radiographic image in a case in which the grid stripe is detected; a step of performing a scattered radiation removal process of removing a scattered component included in the radiation that is transmitted through the subject during imaging from the radiographic image in a case in which the grid stripe is not detected; and a step of displaying a radiographic image subjected to the grid stripe removal process on a display unit in the case in which the grid stripe is detected and displaying a radiographic image subjected to the scattered radiation removal process and a radiographic image before the scattered radiation removal process on the display unit in the case in which the grid stripe is not detected.

Assignees

• Fujifilm Corp

Inventors

• Enomoto Jun
• Tajima Takashi
• Koishi Takeshi
• Nakatsugawa Haruyasu
• Sawada Hirofumi
• Harada Daiki
• Kawamura Takahiro
• Naito Satoshi
• Yamagishi Hideki
• Ida Noriaki

Classifications

• A61B6/5252

  removing objects from field of view, e.g. removing patient table from a CT image · CPC title

• A61B6/4464

  the source unit or the detector unit being mounted to ceiling · CPC title

• A61B6/4291

  the detector being combined with a grid or grating · CPC title

• A61B6/5282 Primary

  due to scatter · CPC title

• A61B6/461

  Displaying means of special interest · CPC title