Humans affect Earth's climate through many mechanisms by changing the abundance of greenhouse gases and air pollutants, and by altering the reflectivity of Earth's surface through changes in land use.
Siemens estimate the cost of operating MRI machine with a 1.5T to be around $ 300,000 a year (Keefer, 2011). This includes cost of acquiring and a technologist to operate the machine, cost of power and maintenance cost. The salary for an MRI radiologist ranges between $ 50,000 and 60,000 a year (Keefer, 2011).
The overall cost of Magnetic Resonance Imaging makes it a huge investment to health-care providers. Aside from the initial cost of purchasing the MRI equipment, there is the additional cost of $800,000 each year on average to operate the scanner, including the expensive process used to chill the magnetic coils in the machine.