90 mm quadrature volume coil

Orbital contents of a minke whale (Balaenoptera acutorostrata, USNM 593554 L,R) and a sperm whale (Physeter macrocephalus, USNM 594183 R) were scanned with a GE Signa HDxt 3 T clinical MRI (General Electric Medical Systems, Milwaukee, WI) with a quadrature knee/ft coil (GE) at the Department of Radiology in the Howard University Hospital, Washington, D.C. Images of orbital contents of a Risso’s dolphin (Grampus griseus, USNM 594001 L), a melon-headed whale (Peponocephala electra, USNM 550008 R), and a sperm whale (USNM 594183 L) were acquired with a Bruker AVANCE III 7 T research MRI (Bruker BioSpin, Billerica, MA) using a 72 mm birdcage volume coil (Bruker Biospin) and a 90 mm quadrature volume coil (RAPID Biomedical, Rimpar, Würzburg, Germany) at the Department of Radiology, Howard University College of Medicine, Washington, D.C. Anatomic scans were acquired using T1- and T2-weighted fast spin echo sequences. Structures of the orbit in the MRI were identified and confirmed during dissection of the same specimens following the MRI scanning.

Orbital contents of a minke whale (Balaenoptera acutorostrata, USNM 593554 L,R) and a sperm whale (Physeter macrocephalus, USNM 594183 R) were scanned with a GE Signa HDxt 3T clinical MRI (General Electric Medical Systems, Milwaukee, WI) with a quadrature knee/foot coil (GE) at the Department of Radiology in the Howard University Hospital, Washington, D.C. Images of orbital contents of a Risso’s dolphin (Grampus griseus, USNM 594001 L), a melon-headed whale (Peponocephala electra, USNM 550008 R), and a sperm whale (USNM 594183 L) were acquired with a Bruker AVANCE III 7T research MRI (Bruker BioSpin, Billerica, MA) using a 90mm quadrature volume coil (RAPID Biomedical, Rimpar, Würzburg, Germany) at the Molecular Imaging Laboratory, Department of Radiology, Howard University College of Medicine, Washington, D.C. Anatomic scans were acquired using T1- and T2-weighted 2D fast spin echo (RARE) sequences with fat suppression. T1-weighted scans were acquired with TE=7ms, TR=1750ms, NA=16, RARE factor=4, 45×2mm slices, FOV=90×80mm, matrix=256×512 pixels. T2-weighted scans were acquired with TE=33ms, TR=5000ms, NA=16, RARE factor=8, 45×2mm slices, FOV=90×80mm, matrix=256×512 pixels.