Open AccessThe Radiofrequency Field Distribution Surrounding Coils for Intrauterine Diagnostic Procedures: I. Geometrical Factors
Author(s) -
Rudolfsson Carin,
Joelsson Ingemar,
IngelmanSundberg Axel,
Odeblad Erik
Publication year - 1972
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.3109/00016347209154008
Subject(s) - medicine , obstetrics , radiology
The absorption of radio frequency energy emitted by a small intrauterine coil has been used for intrauterine scanning in order to localize intrauterine pathology, especially cancer. In order to improve the method the distribution of RF field intensities around coils of different geometries has been measured. Ringshaped coils have longer axial effective fields than other coil geometries, probably allowing diagnosis of more deeply lying processes. Still deeper processes may be reached by two‐coil systems of special design. The RF absorption has been shown to follow the squared value of RF field intensity.