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Design of a neonatal head and cardiac imaging system and parallel-transmit volume/receive phased array for 7T MRI during early infancy
Jérémie Clément1, Kathleen Colford2, Emer Hughes2, Tomoki Arichi2,3,4, David Edwards2,3,5, Joseph Hajnal1,2, and Ozlem Ipek1
1Biomedical Engineering, Kings College London, London, United Kingdom, 2Centre for the developing brain, Kings College London, London, United Kingdom, 3Bioengineering, Imperial College London, London, United Kingdom, 4Paediatric neurosciences, Evelina London children's hospital, Guy's and St Thomas' NHS Foundation Trust, London, United Kingdom, 5MRC Centre for Neurodevelopmental Disorders, Kings College London, London, United Kingdom
In this work, we describe the first mechanical frame for infants for brain and cardiac imaging at 7T. The different parts incorporate important design aspects including mechanical sturdiness/safety, toxicity, sanitization and ease of use.
Figure 4 – A) and B) 3D render of the structural elements from Fig. 1A-D. A infant model11 was added for better visualization of the positioning. The Tx-array coil holder was slightly moved out of the final position. C) 3D render of the structural elements from Fig. 1A-C. The fitting of the baby model can be clearly evaluated. The main support structure (Fig. 1E) is not shown to simplify the view.
Figure 1 - 3D render of the main parts of the mechanical frame for infants at 7T, with A) the Tx-array coil holder showing the position of the dipole elements, B) the bed structure, C) the posterior Rx-array frame, D) the anterior Rx-array frame and E) the main support structure. The parts displayed in light blue (in C and E) correspond to the Teflon pads used for displacement between the brain-isocentred and heart-isocentred positions.