Which type of imaging would you expect to obtain poorer quality images due to increased scatter radiation?

MV x-ray images, which use megavoltage radiation, are often associated with poorer quality images due to increased scatter radiation. In radiation therapy, the high energy of megavoltage x-rays leads to significant interactions with matter, producing more scatter. This scatter can degrade the contrast and clarity of the images because it adds unwanted background noise, reducing the ability to distinguish between different structures.

In contrast, CT images and usual diagnostic x-ray images typically utilize lower energy radiation, which results in less scatter and thus better image quality. MRI images do not involve ionizing radiation at all and thus do not suffer from the effects of scatter, rendering them unaffected in this context. Therefore, the nature of MV x-ray imaging makes it particularly prone to scatter-related issues, making them the option that reflects poorer image quality due to increased scatter radiation.