In the case of an examination with intravenous or intravenous contrast agent administration, a few laboratory values are required. According to the current guideline, a distinction is made between outpatients and inpatients:

• Outpatients: Creatinine and TSH max. 3 months old
• Inpatients: Creatinine max. 7 days old, TSH max. 3 months old

A brief overview of the required laboratory values depending on the examination modality can be found directly below:

* In the case of known thyroid disease or suppressed TSH, an additional determination of fT3 and fT4 is required.

• It is not necessary to abstain from food before a contrast-enhanced examination.
• In the case of increased risk, contrast medium allergy or a puncture (any modality), a 4-hour fasting period is required

• The oral antidiabetic agent metformin is primarily excreted renally, as are iodine-containing contrast media. Additional i.v. administration of iodine-containing contrast media increases the risk of metabolic acidosis.
• If renal function is normal or moderately impaired (eGFR > 30ml/min), metformin intake can be continued.
• If renal function is impaired (eGFR < 30ml/min), metformin intake should be paused from the day of the examination and renal function (GFR) should be checked after 48 hours. Metformin can be restarted if there is no significant change in GFR.

• In the case of manifest hyperthyroidism, the administration of iodine-containing contrast media (e.g. CT, angio) is only indicated if there is a vital indication.
• In the case of impaired renal function (e.g. CT, MRI, angio), prior hydration (p.o. or i.v.) should be considered.

If you have any questions regarding any necessary preparation, please do not hesitate to contact us.

If you need the images in addition to our written report, please let us or the patient know. We can make the images available to patients and referring physicians quickly, efficiently and securely via the Internet. The studies can then be viewed (including preliminary examinations if necessary) using any web browser or downloaded and transferred to your image viewing system. This allows us to replace the usual patient CD and protect the environment.

We offer the entire range of radiological training, including advanced specialisations in paediatric/neuroradiology and a dual specialist in radiology/nuclear medicine.

You can find a detailed overview of the individual curricula and the doctors authorised to provide further training in the overview attached below.

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