Digital Screens 
for radiography green-emitting fluorescent screens

​Overview

• Brightest Gd2O2S : Tb for better sharpness and high emission efficiency

• Double layer structure for improved sharpness

• Extremely reliable in high exposure and high humidity conditions

• High large area uniformity

• Available in sizes up to 72x127 cm

 

DRZ - Standard: High Resolution

DRZ - Plus: Balance between Brightness and Resolution

DRZ - High: Superior Brightness

 

Flat panel detector technologies are classified to two types, direct conversion method and indirect conversion method. Direct conversion method uses a-Se, photo-conductor, and indirect conversion method makes use of a scintillator, CsI:TI or Gd2O2S:Tb, and a-Si TFT. 

 

There are many points of evaluations of these methods, less exposure, image quality, stability and safety, etc. Indirect method using Gd2O2S:Tb has good characteristics in the points of stability, safety, economy and ecology.

 

In digital radiographing systems using Gd2O2S:Tb fluorescent screen, many methods as like below are applied including Flat Panel Detector System.

 

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Applications 

• High Image Quality type: FPD area sensor covered by screen

• Foods and Baggage Inspection: line sensor covered by slit screen

• Easy and brief structure type: CCD camera with fluoroscopic screen   

 

 

PI-200 for Portal Imaging in Radio-Therapy

This screen has very much x-ray absorption and thick emitting layer of phosphor with super high brightness on MV radiographing.