In this work, we propose a surface coil for 7T MRI of a human body consisting of three dipoles connected by reactive lumped elements. The proposed coil's ability to create a local minimum of an electric field at a given point in the sample is tested via numerical simulations. It is shown that when used in the transmit mode the proposed coil minimizes the field at a given depth as well as lowers maximum local SAR at the surface when compared to a single dipole.

1.
A.
Raaijmakers
,
P.
Luijten
, and
C.
van den Berg
,
“Dipole antennas for ultrahigh-field body imaging: a comparison with loop coils
,”
NMR Biomed.
29
,
1122
1130
(
2015
).
2.
A.
Raaijmakers
,
M.
Italiaander
,
I.
Voogt
,
J.
Hoogduin
,
D.
Klomp
, and
C.
van den Berg
,
“The fractionated dipole antenna: A new antenna for body imaging at 7 Tesla
,”
Magn. Reson. Med.
75
,
1366
1374
(
2015
).
3.
G.
Solomakha
,
C.
van Leeuwen
,
A.
Raaijmakers
,
C.
Simovski
,
A.
Popugaev
,
R.
Abdeddaim
,
I.
Melchakova
, and
S.
Glybovski
,
“The dual-mode dipole: A new array element for 7T body imaging with reduced SAR
,”
Magn. Reson. Med.
81
,
1459
1469
(
2018
).
This content is only available via PDF.
You do not currently have access to this content.