Which imaging modality is typically used first in trauma assessment?

In the context of trauma assessment, X-ray is typically the first imaging modality used due to its speed, accessibility, and effectiveness in identifying critical injuries, particularly skeletal fractures. X-rays provide immediate information about the condition of the bones, and they can quickly rule out life-threatening issues like fractures in major trauma cases.

The use of ultrasonography can also be important, especially for assessing fluid collections in the abdomen or chest, but it is generally not the primary choice for initial injury assessment. CT scans offer greater detail and are more useful for complex cases once the initial assessment is conducted, while MRI, although highly informative for soft tissues, is rarely used initially in trauma scenarios due to its long acquisition times and limited availability in emergency settings.

Thus, X-ray serves as a foundational tool in trauma assessment, providing an essential first look at a patient's injuries.