Thyroid and parathyroids

Published on 12/06/2015 by admin

Filed under Radiology

Last modified 12/06/2015

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Thyroid and parathyroids

Ultrasound of thyroid

CT and MRI of thyroid and parathyroid

Indications

As a result of its iodine content, normal thyroid is hyperdense relative to adjacent soft-tissues on non-contrast-enhanced CT. Other than for staging medullary thyroid cancer, CT of the thyroid is routinely performed without intravenous (i.v.) contrast which interferes with subsequent radionuclide thyroid imaging or treatment. Particular care must be taken if iodinated i.v. contrast is administered to hyperthyroid patients (see Chapter 2). For MRI, gadolinium-based i.v. contrast agents can be used without compromise.

In parathyroid disease, contrast-enhanced CT and MRI are used: