Comparative study of non-ionic contrast agents Optiray 350 and Ultravist 370 in myelography in dogs

Introduction: An essential quality of non-ionic contrast agents is that of containing in their chemical composition, elements with high atomic weight, which determine an increasing absorption of the X-ray beam and this will cause intense radiopacity. The possibilities for radiological exploration with non-ionic contrast agents are very wide. Currently the radiological examination with contrast agent no longer constitutes a risky step in medical diagnosis. Aims: To highlight the importance of using the non-ionic contrast agents Optiray 350 and Ultravist 370 in dog’s myelography and to compare the changes induced in cerebrospinal fluid and blood biochemical constituents by the administration of those non-ionic contrast substances. Materials and Methods: To determine the influence of non-ionic preparations Optiray 350 and Ultravist 370 on cerebrospinal fluid and on some haematological parameters were included in the study a total of 10 dogs. Results: Myelographies with Optiray 350 and Ultravist 370 in dogs with severe spinal condition negatively influence biochemical and haematological blood status, being necessary to take preventive measures. Optiray 350 and Ultravist 370 administration cause a slight sensitization of liver with blood biochemical parameters return to normal within 24-48 hours. Conclusion: Non-ionic contrast agents Optiray 350 and Ultravist 370 offer a very good opacification of the subarachnoidian space, but because it causes liver sensitization, we recommend using them with caution and only after a prior check of liver function.