Development of a simple MR elastography technique

2015 Fiscal Year Final Research Report

• Project/Area Number: 25461838
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Radiation science
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Numano Tomokazu 首都大学東京, 人間健康科学研究科, 准教授 (10399511)
• Co-Investigator(Renkei-kenkyūsha): Takamoto Kouichi 富山大学, 医学薬学研究部, 助教 (00553116)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: MRI / MRE / elastography / elastogram / pulse sequence

Outline of Final Research Achievements

In this work a new MR Elastography (MRE) technique which can be performed on conventional MRI was developed. The authors has reported that a conventional gradient echo type multiecho sequence can be used for a simple MRE sequence as a substitute for a dedicated MRE sequence. To synchronize the vibration with MR imager, we used the first shot of the RF excitation pulse. In fact, we used the TTL signal of the first shot from the RF power amplifier. However, most of the conventional MRI system doesn’t have this TTL output so some modification or current pick up was needed. With this background in mind, the authors has developed that the leak RF signal received via the dipole antenna, in the magnet room was available as the synchronization trigger then any electrical wiring from the MRI electronics is required. The fusion of the simple MRE sequence and the wireless synchronization pneumatic vibration system make it possible to construct the MRE system in any conventional MRI system.

Free Research Field

画像診断技術学