Serial and Parallel Active Decoupling Characterization Using RF MEMS Switches for Receiver Endoluminal Coils at 1.5 T

Autor: Isabelle Saniour, Fraser Robb, Olivier Beuf, Simon A. Lambert, Kevin Tse Ve Koon, Hamza Raki, Henri Souchay

Publikováno v: IEEE Sensors Journal
IEEE Sensors Journal, 2020, 20 (18), pp.10511-10520. ⟨10.1109/JSEN.2020.2995055⟩
IEEE Sensors Journal, Institute of Electrical and Electronics Engineers, 2020, 20 (18), pp.10511-10520. ⟨10.1109/JSEN.2020.2995055⟩

MEMS (Micro Electro Mechanical System) switches were assessed and compared to PIN diode in fulfilling the task of active decoupling of Receiver Endoluminal Coils (RECs). Three prototype RECs with the PIN diode in parallel ( ${p}$ PIN), MEMS in parall

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a4d8bbdb137ec8ddad8605cc7c4524
https://doi.org/10.1109/jsen.2020.2995055

Electromagnetic Simulation of Signal Distribution of Various RF Endoluminal Loop Geometries with Coil Orientation: Towards a Reconfigurable Design

Autor: Olivier Beuf, Kevin Tse Ve Koon, Fraser Robb, Henri Souchay, Hamza Raki

Publikováno v: Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering
Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering, Wiley, 2021, 2021, pp.1-15. ⟨10.1155/2021/6614696⟩
Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering, 2021, 2021, pp.1-15. ⟨10.1155/2021/6614696⟩

With the objective of improving MR endoluminal imaging of the colonic wall, electromagnetic simulations of different configurations of single-layer and double-layer, and double-turn endoluminal coil geometries were run. Indeed, during colon navigatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5d55a853e194b09544fc6fe94d2ee83
https://hal.archives-ouvertes.fr/hal-03340041

Description and benefits of dynamic collimation in digital breast tomosynthesis

Autor: Henri Souchay, G. Hersemeule, Remy Klausz, Y. Popova

Publikováno v: Radiation protection dosimetry. 165(1-4)

X-ray field to image receptor active area alignment is usually tested in mammographic QC. In digital breast tomosynthesis (dBT), the source moves during the acquisition, generating a displacement of the X-ray beam edges relative to the detector, in o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::055c6fb6fc029bc59f1af7b829171673
https://pubmed.ncbi.nlm.nih.gov/25836693

The impact of anisotropic sampling on the MTF reconstruction in limited aperture tomosynthesis

Autor: Henri Souchay, Remy Klausz

Publikováno v: SPIE Proceedings.

In limited angular aperture tomosynthesis systems, the addition of new degrees of freedom for data acquisition, such as angular aperture and sampling, requires specific optimizations. Typical optimization criteria include MTF, SNR, and NEQ. However,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38091eb427feb475906b7afc59cb16e9
https://doi.org/10.1117/12.813659

Tools and methods for exposure control optimization in digital mammography in presence of texture

Autor: Henri Souchay, Bénédicte Grosjean, Serge Muller

Publikováno v: Medical Imaging 2007: Image Perception, Observer Performance, and Technology Assessment.

To accurately detect radiological signs of cancer, mammography requires the best possible image quality for a target patient dose. The application of automatic optimization of parameters (AOP) to digital systems has been improved recently. The metric

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::402e4a98914df14e902f08eea7f49242
https://doi.org/10.1117/12.709797