Objective: To describe the radiologic findings of blast injuries from the Bangkok bombing on August 17, 2015, as primary, secondary, tertiary, and quaternary blast injuries.

Material and Method: Twenty patients that presented at the emergency department and underwent radiologic investigation on August 17, 2015 were included in this study. The clinical information and imaging findings were retrospectively reviewed from the medical record and Picture Archiving and Communication Systems (PACS).

Results: Conventional radiography and computed tomography (CT) scan were the imaging modalities of choice in the acute blast setting. Acoustic barotrauma was observed in eight patients, and blast lung injury was detected in one patient. One hundred seventy three shrapnel fragments were identified in 16 of 20 patients. Most shrapnel fragments were located in lower extremities and pelvis (77.5%). Most of bone fractures, identified in six patients, were categorized as secondary blast injuries. Five patients had skin burn and two patients showed signs of inhalation injuries.

Conclusion: Radiologic findings of blast injuries in the 2015 Bangkok bombing were predominantly from secondary blast injuries, and most of the shrapnel fragments were found in soft tissue of lower extremities and pelvis.

Keywords: Blast injuries, 2015 Bangkok bombing, Terrorism, Radiologic findings