Title :
A rectangular birdcage coil for MRI of the hand
Author :
Vullo, T. ; Cahill, P.T. ; Pascone, R.
Author_Institution :
Cornell Univ. of Med. Coll., Ithaca, NY, USA
Abstract :
Summary form only given, as follows. A new type of birdcage coil having a rectangular geometry has been developed for MRI (magnetic resonance imaging) of the hand. This coil was analyzed using validated theoretical models for standard cylindrical birdcages. The effective circuit elements were determined and compared for comparable cylindrical and rectangular birdcage coils, and RF field mapping was performed. The SNR of the rectangular coil was 240% greater than that of a comparable cylindrical version. This was consistent with a reduction of noise due to decreased volume and a 22% greater sensitivity (from the field plots) of the rectangular coil compared to the cylindrical version. High-resolution hand images further demonstrated the utility of this type of coil for MRI
Keywords :
biomedical NMR; biomedical equipment; coils; RF field mapping; cylindrical coils; effective circuit elements; hand MRI; high-resolution images; magnetic resonance imaging; medical diagnostic imaging; medical instrumentation; noise reduction; rectangular birdcage coil; theoretical models; Circuit noise; Coils; Educational institutions; Geometry; Image resolution; Magnetic resonance imaging; Noise reduction; Radio frequency; Signal to noise ratio;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301522
