REDUCE RF POWER REQUIREMENTS OF MULTISLICE IMAGING W/ SINGLE ADIABATIC FREQUENCY

降低单绝热频率多切片成像的射频功率要求

• 批准号: 6282806
• 负责人: MICHAEL GARWOOD
• 金额: $ 4.39万
• 依托单位: UNIVERSITY OF MINNESOTA
• 依托单位国家: 美国
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-15 至 1999-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6282806
• 关键词: biomedical resource; cognition; communication behavior; female; human subject; magnetic resonance imaging; male; mental disorders; technology /technique

One of the originally proposed goals was to establish magnetization preparation for contrast generation using B1 independent adiabatic pulses for a variety of imaging applications to overcome B1 variations encountered at high fields and use surface coils for transmission and reception for imaging, a necessity at the high fields due to difficulties of using "body" coils. Such contrast preparations were initially developed and implemented for cardiac "tagging" using segmented BIR-4 or adiabatic DANTE pulses. Last year, a novel adiabatic contrast preparation in spin-echo imaging has also been introduced, yielding excellent contrast and a reduction in power deposition in human brain imaging at 4T.

最初提出的目标之一是建立 使用独立于B1的磁化准备产生对比度 用于各种成像应用的绝热脉冲以克服B1 在高场下遇到的变化，并使用表面线圈 成像的传输和接收，在高场中是必需的 由于使用“身体”线圈有困难。这种对比剂制剂 最初开发和实现的心脏“标记”使用 分段BIR-4或绝热但丁脉冲。去年，一本小说 自旋回波成像中的绝热对比度准备也已被 引入，产生极佳的对比度并降低功耗 4T时人脑成像中的沉积。