RADIATION DETECTION APPARATUS AND RADIATION DETECTION SYSTEM

• US 20130308755A1
• Filed: 02/01/2012
• Published: 11/21/2013
• Est. Priority Date: 02/16/2011
• Status: Abandoned Application

• Current Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Original Assignee: Canon Ayutthaya Limited (Canon Inc.)
• Inventors: Ishida, Yohei, Okada, Satoshi, Nagano, Kazumi, Nomura, Keiichi, Ichimura, Tomoaki, Sasaki, Yoshito
• Application Number:
  US13/983,263
• Publication Number:
  US 20130308755A1
• Time in Patent Office: Days
• US Class Current: 378/62
• CPC Class Codes: A61B 6/4208 characterised by using a particular type of detector
• CPC Class Codes: G01T 1/202 the detector being a crystal

Abstract

A radiation detection apparatus comprising a sensor panel which includes a sensor array including two-dimensionally arrayed photoelectric conversion elements. A scintillator layer is arranged on the sensor panel. A scintillator protection member covers the scintillator layer upon exposing a first side surface of the scintillator layer. A housing surrounds the scintillator layer and the sensor panel. The housing includes a sealing portion to which a side surface of the sensor panel adjacent to the first side surface and the first side surface are joined by a resin.

Claims

1. A radiation detection apparatus comprising:

a sensor panel (101) which includes a sensor array (201) including two-dimensionally arrayed photoelectric conversion elements;

a scintillator layer (103) which is arranged on said sensor panel;

a scintillator protection member (102) which covers said scintillator layer upon exposing a first side surface (108) of said scintillator layer; and

a housing (106) which surrounds said scintillator layer and said sensor panel,

wherein said housing (106) includes a sealing portion (105) to which a second side surface (112) of said sensor panel adjacent to the first side surface (108) and the first side surface (108) are joined by a resin.

2. The apparatus according to claim 1, characterized in that said scintillator protection member covers side surfaces of the scintillator layer other than the first side surface and a first surface of the scintillator layer facing a second surface of the scintillator layer on the side of the sensor panel.

3. The apparatus according to claim 1, characterized in that said scintillator protection member includes a base for supporting first surface of the scintillator layer facing a second surface of the scintillator layer on the side of the sensor panel and a layer which covers the second surface and side surfaces of the scintillator layer other than the first side surface, and the second surface is adhered to said sensor panel.

4. The apparatus according to claim 1, characterized in that the outer surfaces of the said scintillator layer and said sensor panel, that are adjacent to the first side surface and the second side surface, are joined to said sealing portion with resin.

5. The apparatus according to claim 1, characterized in that a distance from an end of said sensor panel on a side of said sealing portion to an outer side surface of said housing on the side of said sealing portion when said sealing portion is connected to said sensor panel is not larger than 5 mm.

6. The apparatus according to claim 1, characterized in that a distance from an end of said sensor panel on a side of said sealing portion to an outer side surface of said housing on the side of said sealing portion when said sealing portion is connected to said sensor panel is not larger than 2 mm.

7. The apparatus according to claim 1, characterized in that said scintillator layer has a columnar crystal structure, and the columnar crystal structure essentially consists of at least one pair selected from the group consisting of CsI and Tl, CsI and Na, CsBr and Tl, NaI and Tl, LiI and Eu, and K and Tl.

8. A radiation detection system comprising:

a radiation source (6050) which emits radiation to a subject to be inspected;

a radiation detection apparatus (6040) according to claim 1 that detects the radiation having passed through the subject to be inspected;

signal processing means (6070) for performing an image process for a signal detected by said radiation detection apparatus; and

display means (6080, 6081) for displaying the signal having undergone the image process by said signal processing means.