Conformal ultrasound imaging system for anatomical breast inspection

Julien Rouyer 1, * Serge Mensah 1 Emilie Franceschini 1 Philippe Lasaygues 1 Jean-Pierre Lefebvre 1
* Auteur correspondant
1 O&I - Ondes et Imagerie
LMA - Laboratoire de Mécanique et d'Acoustique [Marseille]
Abstract : Ultrasound tomography has considerable potential as a means of breast cancer detection because it reduces the operator-dependency observed in echography. A half-ring transducer array was designed based on breast anatomy, to obtain reflectivity images of the ductolobular structures using tomographic reconstruction procedures. The 3-MHz transducer array comprises 1024 elements set in a 190-degree circular arc with a radius of 100 mm. The front-end electronics incorporate 32 independent parallel transmit/receive channels and a 32-to-1024 multiplexer unit. The transmit and receive circuitries have a variable sampling frequency of up to 80 MHz and 12-bit precision. Arbitrary waveforms are synthesized to improve the signal-to-noise ratio and to increase the spatial resolution when working with low-contrast objects. The setup was calibrated with academic objects and a needle hydrophone to develop the data correction tools and specify the properties of the system. The backscattering field was recorded using a restricted aperture, and tomographic acquisitions were performed with a pair of 0.08-mm-diameter steel wires, a low-contrast 2-D breast phantom, and a breast-shaped phantom containing inclusions. Data were processed with dedicated correction tools and a pulse compression technique. Objects were reconstructed using the elliptical back-projection algorithm.
Type de document :
Article dans une revue
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2012, 59 (7), pp.1457 - 1469. 〈10.1109/TUFFC.2012.2346〉
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https://hal.archives-ouvertes.fr/hal-00733307
Contributeur : Julien Rouyer <>
Soumis le : mardi 18 septembre 2012 - 13:43:00
Dernière modification le : vendredi 11 mars 2016 - 01:02:09

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Julien Rouyer, Serge Mensah, Emilie Franceschini, Philippe Lasaygues, Jean-Pierre Lefebvre. Conformal ultrasound imaging system for anatomical breast inspection. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2012, 59 (7), pp.1457 - 1469. 〈10.1109/TUFFC.2012.2346〉. 〈hal-00733307〉

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