Question 17

Gamma rays are used in the bone scan.

Bone scans utilize gamma rays because these types of electromagnetic radiation have very short wavelengths that can easily penetrate the body, allowing for the formation of sharp images necessary for diagnosing bone disorders.

A) Microwaves

Microwaves do not possess the short wavelength required for effective imaging in bone scans. They are primarily used in communication technologies and cooking, and their longer wavelengths would not provide the necessary detail needed for medical imaging.

B) Visible light

Visible light is not suitable for bone scans as it does not penetrate human tissue effectively enough to create the detailed images required for diagnosis. Medical imaging typically relies on radiation that can pass through the body more effectively than visible light.

C) Gamma rays

Gamma rays are the correct choice for bone scans due to their very short wavelengths, which allow them to pass through the body and create high-resolution images of bone structure. They are specifically used in nuclear medicine for their penetrative capabilities and imaging quality.

D) Infrared radiation

Infrared radiation is ineffective for bone scans because it does not penetrate the body sufficiently to provide clear imaging. It is more commonly used for thermal imaging and other applications that do not require deep tissue visualization.

Conclusion

Gamma rays are definitively the correct answer as they are the only type of electromagnetic radiation among the options provided that can effectively penetrate the body and produce the necessary high-resolution images for diagnosing bone disorders. All other options fail to meet the requirements for effective imaging in this medical context.