Question

Which best explains why an MRI is useful for diagnosing cancer but ineffective in treating it?

The frequency of the radio waves used is so high that the waves cannot be used to target specific cells.
The wavelength of the radio waves used is so short that the waves cannot be used to target specific cells.
The amount of energy carried by radio waves is enough to provide images but not enough to kill cells.
The amount of energy carried by radio waves is so high that it provides images but can also damage cells.

Answer 1

An MRI is useful for cancer diagnosis because it provides detailed images using low-intensity radio waves that do not harm human tissue, but these waves lack the energy required to kill cancer cells, making MRI ineffective for cancer treatment.

Step-by-step explanation:

The reason MRI is useful for diagnosing cancer but ineffective in treating it is that the amount of energy carried by radio waves is enough to provide highly detailed two- and three-dimensional images of tissues but not enough to kill cancer cells.

Unlike treatments such as radiation therapy, which uses high-energy radiation to damage the DNA of cancer cells and destroy their ability to divide and grow, the radio waves used in MRI have a much lower intensity. This low intensity presents little to no hazard to human health, and therefore it does not have the capability to treat or destroy cancer cells.

Answer 2

Answer:The amount of energy carried by radio waves is enough to provide images but not enough to kill cells.

Step-by-step explanation: