Effect of depth-dependent modulation transfer function and K-fluorescence reabsorption on the detective quantum efficiency of indirect-conversion flat-panel x-ray imaging systems using CsI

2001 ◽  
Author(s):  
John A. Rowlands ◽  
Winston G. Ji ◽  
Wei Zhao
Keyword(s):  
Transfer Function ◽  
Quantum Efficiency ◽  
Modulation Transfer Function ◽  
Imaging Systems ◽  
Detective Quantum Efficiency ◽  
Modulation Transfer ◽  
Flat Panel ◽  
X Ray ◽  
X Ray Imaging

Investigation of Scintillation Screens for X-Ray Imaging

2006 ◽  
Vol 321-323 ◽  
pp. 1056-1059 ◽  
Author(s):  
Jung Min Kim ◽  
Ho Kyung Kim ◽  
Min Ho Cheong ◽  
Min Kook Cho ◽  
Cheol Soon Shon ◽  
...  
Keyword(s):  
Transfer Function ◽  
Modulation Transfer Function ◽  
Columnar Structure ◽  
Diagnostic Radiology ◽  
Modulation Transfer ◽  
X Ray ◽  
X Ray Imaging ◽  
Conventional Film ◽  
Wide Range ◽  
Imaging Performance

Terbium-doped gadolinium oxysulfide (Gd2O2S:Tb) phosphor screen is the most popular X-ray converter in diagnostic radiology. We have investigated the fundamental imaging performance of Gd2O2S:Tb screens in terms of X-ray sensitivity and MTF (modulation-transfer function). The measurements were performed for a wide range of coverages (34 – 135 mg/cm2) by using a conventional film radiographic method. In addition, CsI:Tl having columnar structure was also investigated.

scholarly journals Analysis of resolution properties for three generations of MV imagers in radiation therapy using the modulation transfer function

2017 ◽  
Vol 3 (2) ◽  
pp. 661-663
Author(s):  
Katharina Loot ◽  
Oliver Waletzko ◽  
Ralf Rohn ◽  
Bernhard Spaan ◽  
Andreas Block
Keyword(s):  
Radiation Therapy ◽  
Transfer Function ◽  
Modulation Transfer Function ◽  
Imaging Systems ◽  
Modulation Transfer ◽  
Flat Panel ◽  
Clinical Routine ◽  
Three Generations ◽  
Flat Panel Imaging

AbstractImaging in radiation therapy has become an important part of clinical routine. In order to evaluate and compare the image quality of verification images from different imaging modalities, one needs objective criteria like the modulation transfer function (MTF). The aim of our study was to compare the resolution properties of three generations of electronic portal imaging devices (EPIDs), namely one fluoroscopic-optical system and two different flat-panel imaging systems.

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