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Abstract #1999

Comparision of Discography Opening Pressure to T1ρ Relaxation in the Inter-Vertebral Disc in Vivo

Matthew Fenty1, Walter RT Witschey 2nd1,2, Haris Mohammad1, Philip Maurer3, Ravinder Reddy1, Dawn Elliott4, Arijitt Borthakur1

1Radiology, University of Pennsylvania, Philadelphia, Pa, USA; 2Graduate Group in Biochemistry and Molecular Biophysics, University of Pennsylvania, Philadelphia, Pa, USA; 3Booth, Bartolozzi, Balderston - 3B Orthopaedics, P.C., Philadelphia, Pa, USA; 4McKay Orthopaedic Research Laboratory, University of Pennsylvania, Philadelphia, Pa, USA


We correlate discography opening pressure with T relaxation values within the nucleus pulposus in the inter-vertebral disc. Preliminary data demonstrates an increasing linear trend with opening pressure to mean disc T values with an R2 of 0.70. Additionally, we find a decreasing linear relationship comparing Pfirrman Grade from T2 imaging with T values with an R2 of 0.61 which is similar to previously reported findings.