Dear-Mama: A photon counting X-ray imaging project for medical applications

Blanchot, G.; Chmeissani, M.; Díaz, Ana; Díaz, F. Sierra; Fernández, Jorge Eduardo Chira; Garcia, E.; Garcia, J.; Kainberger, Franz; Lozano, M.; Maiorino, M.; Martı́nez, Ricardo; Montagne, J P; Moreno, Ignacio; Pellegrini, G.; Puigdengoles, C.; Sentís, Melcior; Terés, Lluís; Tortajada, Meritxell; Ullán, M.

doi:10.1016/j.nima.2006.09.025

Cited by 15 publications

(9 citation statements)

References 3 publications

(4 reference statements)

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“…Medipix detectors have been used in a wide range of applications, including high-energy physics experiments (Greiffenberg et al, 2009, Collins et al, 2011, medical physics (hence 'Medi', e.g. Blanchot et al, 2006, Butzer et al, 2008, Martišíková et al, 2011, Hartmann, 2013 and small animal imaging (Accorsi et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

Furnell

Shenoy

Fox

et al. 2019

Advances in Space Research

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The Langton Ultimate Cosmic ray Intensity Detector (LUCID) is a payload onboard the satellite TechDemoSat-1, used to study the radiation environment in Low Earth Orbit (∼635km). LUCID operated from 2014 to 2017, collecting over 2.1 million frames of radiation data from its five Timepix detectors on board. LUCID is one of the first uses of the Timepix detector technology in open space, with the data providing useful insight into the performance of this technology in new environments. It provides high-sensitivity imaging measurements of the mixed radiation field, with a wide dynamic range in terms of spectral response, particle type and direction. The data has been analysed using computing resources provided by GridPP, with a new machine learning algorithm that uses the Tensorflow framework. This algorithm provides a new approach to processing Medipix data, using a training set of human labelled tracks, providing greater particle classification accuracy than other algorithms. For managing the LUCID data, we have developed an online platform called Timepix Analysis Platform at School (TAPAS). This provides a swift and simple way for users to analyse data that they collect using Timepix detectors from both LUCID and other experiments. We also present some possible future uses of the LUCID data and Medipix detectors in space.

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Section: Introductionmentioning

confidence: 99%

First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

Furnell

Shenoy

Fox

et al. 2019

Advances in Space Research

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“…The smallest presented feature size was 0.8 mm. Blanchot et al [63] compared a Medipix2based mammography system with 700 μm thick Si-sensor with a Hologic Selenia system and found a better spatial resolution, but no quantitative measurements were presented.…”

Section: Comparison With Related Workmentioning

confidence: 99%

Investigation of CdTe, GaAs, Se and Si as Sensor Materials for Mammography

Procz

Roque

Ávila

et al. 2020

IEEE Trans. Med. Imaging

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Despite the benefits of mammography investigations, some studies have shown that X-ray exposure from the mammography screening itself can statistically cause breast cancer in a small fraction of women. Therefore, a dose reduction in mammography is desirable. At the same time, there is a demand for a higher spatial resolution in mammographic imaging. The most promising way to achieve these goals is the use of advanced photonprocessing semiconductor X-ray detectors with optimum sensor materials. This study addresses the investigation of the optimum semiconductor sensor material for mammography in combination with the photon-processing detector Medipix3RX. The influence of K-shell fluorescence from the sensor material on the achievable contrast-to-noise ratio is investigated, as well as the attenuation efficiency. The three different sensor materials, CdTe, GaAs, and Si are studied, showing advances of CdTe-sensors for mammography. Furthermore, a comparison of the contrast-to-noise ratio between a clinical Se-detector and Medipix3RX detectors with Si-and CdTe-sensors is shown using a self-produced mammography phantom that is based on real human tissue.

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“…The high dynamic range has allowed the chips to operate in environments such as Computed Tomography (CT) and Micro-CT [5] where very high rates are encountered. In the field of medical imaging the chips have been used as prototype digital readouts for mammography [6], dental imaging [7], and multi-spectral CT imaging. Multi-spectral imaging will be discussed further in section 4.1.…”

Section: X-ray Imagingmentioning

confidence: 99%

“…It is possible to detect a wide spectrum of neutrons at relatively high efficiency using a silicon sensor coupled with a converter layer of either plastic, 6 Li or 10 B. The neutron is captured in the converter layer and produces highly ionizing particles such as alphas which can be readily detected by a Medipix assembly.…”

Section: Neutron Monitoringmentioning

confidence: 99%

Medipix 3 and Timepix 2 Chip and Applications

Plackett¹,

Ballabriga²,

Campbell³

et al. 2011

Proceedings of 19th International Workshop on Vertex Detectors — PoS(VERTEX 2010)

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These proceedings describe the current status of the Medipix family of pixel readout chips. The current chips, Medipix2, Timepix and Medipix3 are described and their applications briefly summarised. A future readout chip Timepix2 is also discussed and two possible implementations are explored. The Medipix2 and Timepix chips have allowed a wide variety of fields to access hybrid pixel technology where it would otherwise have not been financially viable. This has lead to a very broad range of applications, including material analysis, medical imaging, sensor development, dosimitry, neutron monitoring and education. The success and maturity of the technology has also led to the chips being used to develop future systems within HEP, particularly the future LHCb pixel vertex tracker. * Speaker.

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Dear-Mama: A photon counting X-ray imaging project for medical applications

Cited by 15 publications

References 3 publications

First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

Investigation of CdTe, GaAs, Se and Si as Sensor Materials for Mammography

Medipix 3 and Timepix 2 Chip and Applications

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