MRI RF Head Coil Test Results

These images were taken as part of independent lab tests at Hershey Medical Center on the first Doty quadrature rf Litzcage 3 T head coil.

T2 Weighted Head Images in Bruker 3 T

(Fast spin echo; TE=80.4 ms; TR=3150 ms; NEX=2;

4 mm slice; 256 x 256; 25 x 25 x 25 cm³ FOV; 3:23 per slice)

Doty Litzcage                          Bruker Birdcage

P_P1 =47 W                                  P_P1 =67 W

Peak power (total at coil) for 3 ms Gaussian 180° pulse.

T1 Weighted Head Images in Bruker 3T

(Single spin echo; TE=12.1 ms; TR=456 ms; NEX=2;

4 mm slice; 256 x 256; 25 x 25 x 25 cm 3 FOV; 3:53 per slice)

Doty Litzcage                                 Bruker Birdcage

P_P1 =47 W                             P_P1 = 67 W

Peak power (total at coil) for 3 ms Gaussian 180° pulse.

SNR in 50 mM NaCl Phantom

(15.3 cm dia., 25 cm height; Fast Spin echo; TE=76 ms; TR=4023 ms;

5 mm slice; 256 x 256; axial: 20 x 20 cm² FOV; sagittal: 20 x 32 FOV)

SNR(w): signal from whole plane:   SNR(c): central portion, 25% radius or height

      Doty Litzcage                                           Bruker Birdcage          

14 W, ~4 liters                  19 W, ~5 liters

Peak power and effective volume for 3 ms Gaussian 180° pulse.