True or false: Magnetic resonance imaging (MRI) uses ionizing radiation to create images.

Magnetic resonance imaging (MRI) is a medical imaging technology that utilizes strong magnetic fields and radio waves to generate detailed images of organs and tissues within the body. Unlike other imaging modalities such as X-rays and computed tomography (CT) scans, MRI does not involve ionizing radiation. This is a significant advantage of MRI, as ionizing radiation can pose risks such as radiation exposure and potential long-term health effects.

The effectiveness of MRI comes from its ability to capture images based on how different tissues respond to magnetic fields and radiofrequency pulses, allowing for high-resolution images without the harmful effects associated with ionizing radiation. This characteristic of MRI makes it a preferred method for many diagnostic applications where detailed imaging is required, particularly in soft tissues.

Thus, the assertion that MRI uses ionizing radiation is false, making the correct answer "B."