Hello aj456,
Mammogram with contrast or MRI with contrast are usually used for those with dense breasts.
In my case, nothing could be seen in the mammogram even when a 7cm lump could be seen and felt!
It was the MRI that showed how extensive the disease was and confirmed the need for a mastectomy, so I was glad I pushed for it.
I have a 3d mammogram on my good side & ultrasound every year and then an MRI every two years. My doctor is hesitant to do the MRI more often as he says too much 'contrast'(or dye),can cause Parkinson's.
Every treatment option has risks so it's about weighing those up. Have a discussion with your doctor and if your gut tells you that you need an MRI , ask for it.
Always keep up your regular self checks too.. I've had two recurrences & it's the self checks that did more for me than any scans have!