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3D printed kidney phantoms for an LED-based photoacoustic and ultrasound imaging system

Nikitichev, DI; Murawski, K; Harris, G; Perkins, G; Mosse, S; Maneas, E; Xia, W; ... Hebden, J; + view all (2019) 3D printed kidney phantoms for an LED-based photoacoustic and ultrasound imaging system. In: Kress, Bernard, (ed.) Proceedings Volume 10878, Photons Plus Ultrasound: Imaging and Sensing 2019. SPIE: Bellingham, WA, USA. Green open access

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Abstract

Photoacoustic imaging is a powerful and increasingly popular technique for tissue diagnostics. Suitable tissue- equivalent phantoms are in high demand for validating photoacoustic imaging methods and for clinical training. In this work, we describe a method of directly 3D printing a photoacoustic tissue-equivalent phantom of a kidney based on Gel Wax, which is a mix of polymer and mineral oil. A kidney phantom that is compatible with photoacoustic scanning will enable clinicians to evaluate a portable LED-based photoacoustic and ultrasound imaging system as a means of locating tumors and other abnormalities. This represents a significant step towards clinical translation of the compact system. Training using realistic phantoms reduces the risks associated with clinical procedures. Complications during procedures can arise due to the specific structure of the kidney under investigation. Thus the ability to create a 3D printed phantom based on detailed anatomical images of a specific patient enables clinicians to train on a phantom with exactly the same structure as the kidney to be treated. Recently we developed a novel 3D printer based on gel wax. The device combines native gel wax with glass microspheres and titanium dioxide (TiO 2 ) particles to obtain a medium with tissue-like optical and acoustic properties. 3D models created using this printer can be given a range of values of optical absorption reduced scattering coefficients. The ability to 3D patient-specific phantoms at low cost has the potential to revolutionize the production and use of tissue-equivalent phantoms in future, and can be applied to a wide range of organs and imaging modalities.

Type: Proceedings paper
Title: 3D printed kidney phantoms for an LED-based photoacoustic and ultrasound imaging system
Event: SPIE BiOS 2019, 2-7 February 2019, San Francisco, USA
ISBN-13: 9781510623989
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2509831
Publisher version: https://doi.org/10.1117/12.2509831
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: 3D-printing, tissue-mimicking material, kidney, phantom, gel-wax, photoacoustic, ultrasound
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10074982
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