A Smart Assistant for MRI Technologists

MRI 技术人员的智能助手

• 批准号: 10385269
• 负责人: Alan MACY
• 金额: $ 25.6万
• 依托单位: BIOPAC SYSTEMS, INC.
• 依托单位国家: 美国
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-09-20 至 2022-06-19
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10385269
• 关键词: Acceleration; Accelerometer; Anesthesia procedures; Animals; Back; Behavior Therapy; Calibration; Caring; Child; Childhood; Clinical; Collection; Communication; Computer software; Data; Devices; Diagnostic; Ensure; Environment; Equipment; Feedback; Force of Gravity; Freedom; Future; Head; Heating; Human; Image; Kinetics; Knowledge; Lead; MRI Scans; Magnetic Resonance Imaging; Magnetism; Measurement; Measures; Monitor; Morphologic artifacts; Motion; Patients; Pattern; Performance; Phase; Predisposition; Reporting; Risk; Safety; Scanning; Sedation procedure; Severities; Signal Transduction; System; Technology; Testing; Time; Training; United States; Work; Writing; base; cost; data acquisition; digital; ferrite; improved; magnetic field; monitoring device; motion sensor; phase 1 study; programs; radiologist; rate of change; safety testing; sensor; software systems; success; tool; transmission process; vector

Abstract Magnetic resonance imaging (MRI) is critically important for pediatric care and the unusable data caused by patient motion has been estimated to cost $1.4B per year in the United States alone. Currently, a radiologist assesses if the images are satisfactory or not, but an MRI technologist does the imaging, and coordination of communication between the two is costly and slow. We propose to develop a device that monitors motion during an MRI scan without creating an MRI artifact or posing a burden to the subject. We propose to develop and assess a device based on MRI compatible MEMS technology that will measure motion and allow an MRI technologist to intervene to improve image quality by reminding the subject to hold still, and to assess the final image quality associated with the imaging data acquired. This will save valuable imaging time and reduce costs by improving the rate of diagnostic quality images, and save time by assisting the MR technologist to decide if the images are sufficient or if they need to be repeated. In this Phase I study, we will develop and validate an MRI compatible gyroscope and an MRI compatible magnetic field sensor, which in combination with an existing MRI compatible accelerometer will allow for rapid calibration of the device to the MRI coordinate system and the sensing of six degree of freedom motion. BIOPAC currently makes and sells an MRI compatible accelerometer. We will develop an MRI compatible gyroscope and magnetometer and a combined MRI compatible accelerometer/gyroscope in the same form factor as the current accelerometer. The sensor measurements will be converted to a digital signal through the existing BIOPAC MP160 hardware interface. We will write a software interface to enable each sensor to be used with the BIOPAC AcqKnowledge data acquisition software. These sensors will then be tested for their ability to operate safely in a clinical 3T MRI environment, tested for their ability to not create artifacts due to either RF interference or magnetic susceptibility changes, and tested for the accuracy of the sensor measurements in the MRI.

摘要 磁共振成像（MRI）对于儿科护理至关重要，并且由于 据估计，仅在美国，患者移动每年就花费14亿美元。目前，一名放射科医生 评估图像是否令人满意，但MRI技术人员进行成像，并协调 两者之间的通信是昂贵且缓慢的。我们建议开发一种设备， 在MRI扫描期间，不会产生MRI伪影或对受试者造成负担。我们建议发展 并评估基于MRI兼容MEMS技术的设备，该设备将测量运动并允许MRI 技术专家进行干预，通过提醒受试者保持静止来改善图像质量，并评估最终 与所获取的成像数据相关联的图像质量。这将节省宝贵的成像时间， 通过提高诊断质量图像的比率节省成本，并通过协助MR技术人员节省时间， 决定图像是否足够或是否需要重复。在第一阶段研究中，我们将开发和 验证MRI兼容陀螺仪和MRI兼容磁场传感器， 与现有的MRI兼容加速计配合使用，将允许根据MRI快速校准器械 坐标系和六自由度运动的感测。BIOPAC目前生产和销售一种 MRI兼容加速计。我们将开发一种与MRI兼容的陀螺仪和磁力计， 组合的MRI兼容加速计/陀螺仪，与当前的加速计具有相同的外形尺寸。的 传感器测量值将通过现有BIOPAC MP 160硬件转换为数字信号 接口.我们将编写一个软件接口，使每个传感器能够与BIOPAC AcqKnowledge配合使用 数据采集软件然后将测试这些传感器在临床3 T中安全运行的能力。 MRI环境，测试其不因RF干扰或磁场而产生伪影的能力 敏感性变化，并测试MRI中传感器测量的准确性。