Asymmetric single-turn solenoid for MRI of the wrist

✍ Scribed by Scott D. Szeglowski; Joseph P. Hornak

• Book ID: 102533290
• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 395 KB
• Volume: 30
• Category: Article
• ISSN: 0740-3194
• DOI: 10.1002/mrm.1910300614

✦ Synopsis

Abstract

A single‐turn solenoid, lacking the conventional cylindrical or rectangular symmetry, was constructed for magnetic imaging of the human wrist at 1.5 Tesla. As is characteristic of singleturn solenoids, this wedge‐shaped geometry solenoid was found to have a high filling factor and quality factor, as well as produce images with a favorable signal‐to‐noise ratio. The radio frequency (RF) transmitter power required to produce a 90° pulse in the solenoid was 130 mW. The asymmetric solenoid had a small variation in the intensity of the RF field across its volume, which is characteristic of symmetrical single‐turn solenoids. The combination of these four properties of the coil resulted in the production of excellent 1.5‐mm thick anatomical images of the wrist.