High frame rate X-ray imaging with a 256/spl times/256 pixel single photon counting Medipix2 detector

2006 ◽  
Vol 53 (3) ◽  
pp. 1650-1655 ◽  
Author(s):  
G. Mettivier ◽  
M.C. Montesi ◽  
A. Sebastiano ◽  
P. Russo
Keyword(s):  
Single Photon ◽  
Photon Counting ◽  
Frame Rate ◽  
Single Photon Counting ◽  
X Ray ◽  
High Frame Rate ◽  
X Ray Imaging

X-ray imaging of moving objects using on-chip TDI and MDX methods with single photon counting CdTe hybrid pixel detector

2021 ◽  
Vol 16 (12) ◽  
pp. C12014
Author(s):  
M. Zoladz ◽  
P. Grybos ◽  
R. Szczygiel
Keyword(s):  
Moving Objects ◽  
Single Photon ◽  
Photon Counting ◽  
Two Dimensional ◽  
Single Photon Counting ◽  
X Ray ◽  
X Ray Imaging ◽  
On Chip ◽  
Pixel Matrix ◽  
Single Pixel

Abstract X-ray imaging of moving objects using line detectors remains the most popular method of object content and structure examination with a typical resolution limited to 0.4–1 mm. Higher resolutions are difficult to obtain as, for the detector in the form of a single pixel row, the narrower the detector is, the lower the image Signal to Noise Ratio (SNR). This is because, for smaller pixel sizes, fewer photons hit the pixel in each time unit for a given radiation intensity. To overcome the trade-off between the SNR and spatial resolution, a two-dimensional sensor, namely a pixel matrix can be used. Imaging of moving objects with a pixel matrix requires time-domain integration (TDI). Straightforward TDI implementation is based on the proper accumulation of images acquired during consecutive phases of an object’s movement. Unfortunately, this method is much more demanding regarding data transfer and processing. Data from the whole pixel matrix instead of a single pixel row must be transferred out of the chip and then processed. The alternative approach is on-chip TDI implementation. It takes advantage of photons acquired by multiple rows (a higher SNR), but generates similar data amount as a single pixel row and does not require data processing out of the chip. In this paper, on-chip TDI is described and verified by using a single photon counting two-dimensional (a matrix of 128 × 192 pixels) CdTe hybrid X-ray detector with the 100 µm × 100 µm pixel size with up to four energy thresholds per pixel. Spatial resolution verification is combined with the Material Discrimination X-ray (MDX) imaging method.

scholarly journals Single photon counting X-ray imaging with Si and CdTe single chip pixel detectors and multichip pixel modules

2004 ◽  
Vol 51 (4) ◽  
pp. 1717-1723 ◽  
Author(s):  
M. Locker ◽  
P. Fischer ◽  
S. Krimmel ◽  
H. Kruger ◽  
M. Lindner ◽  
...  
Keyword(s):  
Single Photon ◽  
Photon Counting ◽  
Single Chip ◽  
Single Photon Counting ◽  
X Ray ◽  
Pixel Detectors ◽  
X Ray Imaging

Single photon counting x-ray imaging system using a micro hole and strip plate

2007 ◽  
Author(s):  
Hugo Natal da Luz ◽  
Carlos A. B. Oliveira ◽  
Carlos D. R. Azevedo ◽  
Jamil A. Mir ◽  
Joaquim M. F. dos Santos ◽  
...  
Keyword(s):  
Imaging System ◽  
Single Photon ◽  
Photon Counting ◽  
Single Photon Counting ◽  
X Ray ◽  
X Ray Imaging ◽  
Micro Hole ◽  
Strip Plate

Single Photon-Counting Pixel Readout Chip Operating Up to 1.2 Gcps/mm2 for Digital X-Ray Imaging Systems

2018 ◽  
Vol 53 (9) ◽  
pp. 2651-2662 ◽  
Author(s):  
Rafal Kleczek ◽  
Pawel Grybos ◽  
Robert Szczygiel ◽  
Piotr Maj
Keyword(s):  
Single Photon ◽  
Photon Counting ◽  
Imaging Systems ◽  
Single Photon Counting ◽  
X Ray ◽  
X Ray Imaging

Single Photon Counting X-Ray Imaging System Using a Micro Hole and Strip Plate

2008 ◽  
Vol 55 (4) ◽  
pp. 2341-2345 ◽  
Author(s):  
Hugo Natal da Luz ◽  
Carlos A. B. Oliveira ◽  
Carlos D. R. Azevedo ◽  
Jamil A. Mir ◽  
Rui de Oliveira ◽  
...  
Keyword(s):  
Imaging System ◽  
Single Photon ◽  
Photon Counting ◽  
Single Photon Counting ◽  
X Ray ◽  
X Ray Imaging ◽  
Micro Hole ◽  
Strip Plate
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