What is the typical imaging method to assess bladder injury post-trauma?

Cystography is the typical imaging method used to assess bladder injury following trauma. This imaging technique specifically evaluates the bladder's anatomy and any potential leaks or ruptures that may occur as a result of injury. Cystography can be performed using fluoroscopic techniques with contrast material, which allows for a detailed view of the bladder as it fills and during voiding. This makes it particularly useful for diagnosing injuries, as the contrast will outline the bladder and any disruption can be readily visualized.

While other imaging modalities like ultrasound or CT scans can provide useful information, they are not as definitive for bladder evaluation in this context. A CT abdomen without contrast may help identify intra-abdominal injuries or bleeding, but it does not specifically assess bladder integrity. An MRI of the abdomen would typically be reserved for soft tissue assessment and not ideal for acute trauma situations as it is more time-consuming and less accessible in emergency settings. Additionally, a sonogram may detect free fluid in the abdomen but lacks the detail provided by cystography specifically for bladder injuries. Thus, cystography remains the preferred method for its targeted assessment capabilities.