COLOR DOPPLER AND DOPPLER SPECTRAL ANALYSIS IN THE SPINAL CORD OF NORMAL DOGS |
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| Authors: | Judith A. Hudson DVM PhD Susan T. Finn-Bodner DVM MS Joan R. Coates DVM Donald C. Sorjonen DVM MS Stephen T. Simpson DVM MS James C. Wright DVM PhD Jan E. Steiss DVM PhD Nancy R. Cox DVM PhD Dana M. Vaughn DVM PhD Starr C. Miller BS Scott A. Brown DVM PhD Phillip D. Garrett DVM MS |
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| Affiliation: | Departments of Radiology (Hudson, Finn-Bodner), Small Animal Surgery and Medicine (Coates, Sorjonen, Simpson, Miller), Scott-Ritchey Research Center (Steiss, Vaughn, Cox), Pathobiology (Wright), and Anatomy and Histology (Garrett) at Auburn University, Al 36849, College of Veterinary medicine, and the Upjohn Co, Kalamazoo, MI (Brown). Publication #2349. Supported by the Upjohn Company, Kalamazoo, MI, and the Scott-Ritchey Research Center. |
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| Abstract: | Doppler ultrasonography of the spinal cord was performed in 34 normal, anesthetized dogs following hemilaminectomy. This study was part of an investigation to evaluate the efficacy of a 21-aminosteroid compound and high dose methylprednisolone for the treatment of spinal cord trauma. Grey-scale images of the canine spinal cord were similar to those described for the spinal cord of people. Doppler waveforms of intraparenchymal spinal arteries exhibited high end diastolic blood flow velocities, indicating low resistance to flow. Doppler values (mean ± SD) for arteries immediately ventrolateral to the central canal were: Peak Systolic Velocity = 5.78 ± 2.5 cm/sec, Minimum Diastolic Velocity = 3.5 ± 1.62 cm/sec, Mean Velocity = 4.45 ± 1.96 cm/sec, Minimum Diastolic Velocity = 3.5 ± 1.62 cm/sec, Mean Velocity = 4.45 ± 1.96 cm/sec, Systolic/Diastolic ratio = 169 ± 0.19, Pulsatility Index = 0.53 ± 0.09, and Resistance Index = 0.4 ± 0.06. |
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| Keywords: | doppler spinal cord blood flow velocity color flow Doppler imaging ultrasonography, dog. |
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