Bioresorbable RF Coils For Post-Surgical Monitoring by MRI

项目总结/摘要 该项目的总体目标是开发和评估植入式和生物可吸收射频 (RF)利用磁共振成像进行高分辨率和高特异性术后监测的线圈 （MRI）。这项工作的直接目标应用是评价周围神经再生以下 外科修复创伤性损伤后神经的手术修复是常见的，但结果差异很大。 MRI在监测神经对手术修复的反应方面具有潜力;然而， 获得具有足够空间分辨率和信噪比（SNR）的MRI，用于神经的稳健表征 再生 已知使用用于MRI信号接收的小的局部RF线圈实质上增加了SNR并且使得能够实现MRI信号的接收。 在目标组织体积上具有更高的图像分辨率。这种线圈已经在动物实验中被证明是有效的。 研究，在这里，我们建议利用生物可吸收电子技术的最新进展，以创造生物矿石， 适用于临床应用的可吸收RF线圈。具体来说，我们将开发和评估线圈， 目的是定量评价手术修复后的神经再生。在目标1中，我们将设计和 制造各种不同的生物可吸收RF线圈，适合不同尺寸和位置的神经成像。 在目标2中，我们将在正常大鼠中实验性地测试这些线圈， 受伤，以及在人类尸体手臂中。

PROJECT SUMMARY/ABSTRACT The overarching goal of this project is to develop and evaluate implantable and bioresorbable radio frequency (RF) coils for high-resolution and high-specicity post-surgical monitoring with magnetic resonance imaging (MRI). The immediate target application of this work is the evaluation of peripheral nerve regeneration following surgical repair. Surgical repair of nerve is common following traumatic injury, but outcomes are highly variable. MRI oers potential to monitor response of the nerve to surgical repair; however, it can be a challenge to acquire MRI with sucient spatial resolution and signal-to-noise ratio (SNR) for robust characterization of nerve regeneration. The use of a small, local RF coil for MRI signal reception is known to substantially increase SNR and enable higher image resolution over a targeted volume of tissue. Such coils have been demonstrated eective in animal studies and here we propose to harness recent advances in bioresorbable electronics technology to create biore- sorbable RF coils that are suitable for clinical applications. Specically, we will develop and evaluate coils for the purpose of quantitatively evaluating nerve regeneration following surgical repair. In aim 1, we will design and fabricate a wide range of dierent bioresorbable RF coils, suitable imaging nerves of dierent sizes and locations. In aim 2, we will experimentally test these coils in normal rats, rats that have undergone an experimental nerve injury, and in human cadaver arms.