Study of the ultra high speed silent sequence

• Project/Area Number: 22500438
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Medical systems
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: SENOO Atsushi 首都大学東京, 人間健康科学研究科, 准教授 (00299992)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 磁気共鳴断層撮影装置 / 無音撮像法 / BURST法 / VERSE法

Research Abstract

The goal of this research is to develop the ultra high-speed imaging sequence which noise does not occur during scanning of MRI, obtained higher quality.The present study demonstrates the change rate of the gradient magnetic field at modified EPI sequence, the relationship between image quality and noise generated during scanning. Ultrafast imaging method developed has become possible to decrease drastically with one tenth of conventional regarding quiescence. Signal-to-noise ratio of the image obtained was degraded up to one-quarter as compared with the conventional method. Optimization of the RF pulse is required in the future.