You are working in a college and developing resources to teach students on the access to medicine course. Construct a table that can be referred to by medical imaging students to compare and contrast the uses and relative advantages of x-rays, ultrasound, gamma cameras, and MRI in examining internal structures.

There are many differences and similarities between the different medical imaging techniques, so I will simply summarize the pertinent information about each type mentioned to help you better understand what needs to be in the chart.
X-Rays: X-ray imaging is a form of radiation that penetrates through most tissues but is low enough in energy that it is unable to penetrate through the calcium in bones and also cannot penetrate through lead. It is useful in examining bone structures for decay and fractures. You should limit exposure because of the radiation hazard.
Ultrasound: Ultrasound imaging uses high frequency sonic waves to image an object based on the resulting vibrations from the sound. This is an extremely safe imaging method and is useful for imaging soft tissues through thin layers, like a fetus in the womb. There are concerns that the sonic vibrations can irritate the infant, but it is by far the safest imaging technique.
MRI: Magnetic resonance imaging works on a similar principle to ultrasound—creating vibrations to image. However, these vibrations are created through strong induced magnetic fields. MRI’s are very useful in imaging internal organs and soft tissue structures in detail. There is a potential risk if jewelry or metallic objects are located inside the synchrotron magnets. Particularly dangerous are pacemakers.
Gamma ray imaging: Gamma imaging is similar to x-ray imaging; however, gamma-rays are higher intensity. Gamma ray imaging can be used for soft tissue scans and have a high degree of clarity for difficult-to-image structures. However, the inherent risks are the worst because this is a high intensity radiation.