Does a neck / cervical mri. detect anything wrong with the glands?thyriod

Not usually: Thyroid abnormalities are typically biochemical (hormonal) and not structural. An MRI can pick up nodules or tumors, but not functional abnormalities.

Not usually: Not unless they are looking at the gland specifically.

Probably not: If an MRI is specifically done to look at the cervical spine, the thyroid gland will not be included on the images due to the way the scan is done. If an MRI is done of the "neck" or "soft tissue neck" then all of the major salivary glands and thyroid gland are included and well-evaluated.

Possibly : While and neck MRI may show a nodule or enlarged thyroid the most accurate test for detecting thyroid gland abnormalities is a thyroid ultrasound. It gives the most accurate measurement of the gland, any nodules and can see if suspicious features are present in a nodule.