Which types of medical imaging modalities are best for anatomical assessment? Which for functional assessment?

PET Scan: functional (I believe I am right)
MRI: functional (I believe I am right)
X-Ray: anatomical (I believe I am right)
Radiography: anatomical (I believe I am right)
CT Scan: ? (not sure which one is best)
Ultrasound: ? (idk which one is best)
Nuclear Medicine: functional (I believe I am right)
Answers:
PET Scan: functional
MRI: This is tough because MR offers exqusite anatomic info but can also offer critical functional info as well (e.g. T2 weighted metaphors or contrast enhanced imaged) but if I had to select, I'd pick anatomical assesment.
X-Ray: anatomical (not sure how this differs from radiography)
Radiography: anatomical
CT Scan: primarily anatomical information
Ultrasound: anatomical assesment
Nuclear Medicine: functional

I think I agree on all but MRI beside your answers.

It's not that great of a question to ask since even in nuclear medicine, near is anatomic information to be gained from certain scans, but I suppose they're referring to the primary aptitude of the modality.

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