What type of imaging technique is primarily used to visualize soft tissue structures?

Magnetic Resonance Imaging (MRI) is the most effective technique for visualizing soft tissue structures due to its ability to produce high-resolution images with excellent contrast between different types of soft tissues. It utilizes strong magnetic fields and radio waves to generate detailed images of organs and tissues without the need for ionizing radiation, which is a significant advantage over other imaging modalities.

MRI is particularly adept at delineating boundaries of structures such as muscles, ligaments, fat, and organs like the brain, heart, and kidneys. This specificity makes it invaluable in the diagnosis of various conditions, including tumors, injuries, and inflammatory diseases involving soft tissues.

In contrast, while X-rays can provide some information about soft tissues, they are generally more suited for assessing bone and structural integrity. CT scans, though they offer better soft tissue visualization than X-rays, are still less effective than MRI when it comes to differentiating between various soft tissue types due to their reliance on ionizing radiation and the inherent limitations in contrast resolution. Ultrasound is also used for soft tissue imaging, but its effectiveness can vary depending on the depth and type of tissue being evaluated and is often less detailed than MRI images.