Guides and Forms

Valley Radiology offers physician-centered care. We understand when it comes to radiology referrals, accuracy is essential. But it’s just one part of the picture. We also know that fast turnaround, dedicated support and responsive service and processes are equally important. When you refer patients to us, you can be sure they will receive the highest level of care.

We at VRI recognize that contrast administered during imaging studies is not without risk. In order to prevent contrast induced nephropathy in CT, nephrogenic systemic fibrosis in MR, and contrast reactions in both CT and MR, we have briefly outlined our protocol below to maximize safety while achieving the highest diagnostic accuracy. Our guidelines are based on the latest American College of Radiology’s Manual on Contrast Media, Version 9.

CT

For CTs with contrast, renal function tests should be obtained within 90 days for patients with an age >60, diabetes, hypertension, a history of renal disease, or that may have possible renal dysfunction.

  • for eGFR > 60, a full dose of contrast will be administered.
  • for eGFR 40-60, pre-scan IV hydration and the use of the lowest possible dose of contrast for an adequate study will be administered.
  • for eGFR 30-39, order will be reviewed and the referring physician may be contacted to ensure contrast is absolutely necessary; if so, pre-scan IV hydration and the use of the lowest possible dose of contrast for an adequate study will be administered.
  • for eGFR < 30, contrast will not be used due to the significant risk of contrast induced nephropathy.
  • for patients in chronic renal falure on dialysis and no reasonable expectation of native renal function, contrast may be used.

MRI

For MRI with contrast, renal function tests should be obtained within 90 days for patients with an age >60, diabetes, hypertension, a history of renal disease, or that may have possible renal dysfunction.

  • eGFR > 60, a full dose Dotarem not to exceed 20 cc will be administered
  • eGFR 30-60, full dose Dotarem will be administered. Please note Dotarem has never had a nonconfounded case of nephrogenic systemic fibrosis.
  • eGFR < 30 or on dialysis,  needs discussion with referrer if absolutely needed to assess if the benefits outweigh the risks, Dotarem will be used and dialysis within 24 hours will be considered.

No pretreatment needed

  • Single, Isolated shellfish allergy not anaphylactic

Premedication needed (50mg Prednisone PO 13, 7 and 1 hour before injection & 50mg Benadryl PO within 1 hour of injection)

  • Existing mild reaction to iodinated contrast i.e. hives, nonanaphylactic reaction
  • Allergies to multiple entities
  • Anaphylaxis to anything other than iodinated contrast

IV contrast contraindicated

  • Prior anaphylaxis to iodinated contrast

MRIs are contraindicated if there are:

  1. Pacemakers or other implanted pump devices.
  2. Metallic debris in the soft tissues of the orbit.
  3. Older intracranial vascular aneurysm clips (most modern clips are MRI compatible and can be cleared by our techs if the clip model is identified).

MRIs are NOT contraindicated with:

  • Orthopedic implanted hardware (joint replacements, spinal fusion, etc.).
  • Soft tissue shrapnel (except for within the orbit).
  • Non-intracranial vascular stents.

Please call any of our offices if you have any questions regarding the suitability of your patient for MRI examinations and we will be happy to assist you.