That would be a correct assessment:

https://pubs.rsna.org/doi/full/10.1148/radiol.2020192084

Radiology departments are major energy consumers within a hospital through operation of CT and MRI scanners, which require energy in the range of 0.5–30 kWh per examination, with peak consumption reaching beyond 100 kW for a short time period.

Note that the low side of that are CT scanners, MRI are in the 25kWh to 30kWh range per exam.

https://www.researchgate.net/publication/344207928_Emergency_Power_Supply_for_NICU_of_a_Hospital_by_Solar-Wind-Based_System_a_Step_Towards_Sustainable_Development_Journal_of_Solar_Energy_Research_JSER_53_506-515

The neonatal ward of the hospital under study contains 10 phototherapy devices and 4 incubators, with their consumed kWh during the day, equal to 1.08, and 10.76, respectively [16].

So just under 12kWh to operate those 14 NICU devices for 24 hours.

So the energy to perform 1 MRI exam would at a minimum power 28 NICU devices for 24 hours.

On top of that, the peak power usage of an MRI can reach 100kW!

Don’t forget, you’re not only powering the machine itself, but also the cooling it needs to stay operational.

More info:

https://www.vitalscan.health/how-radiology-can-be-greener/

An MRI machine can use up to 400kWh per day across 12 hours or 12000kWh per month. This electrical consumption is equal to running 40 average houses for a month