[Follow-up study of MRI imaging in a case of traumatic pulmonary hematoma].

A 29-year-old male was suffered from traumatic pulmonary hematoma by blunt chest trauma. We examined chest roentogenograms, chest CT, and MR imaging of the thorax periodically. Those revealed that: 1) Traumatic pulmonary hematoma produce an intense signal and is not influenced by blood stream in the MR imaging. 2) Like other methods, in MRI, pulmonary hematoma gradually decreased its volume. However, as hematoma is visualized solitarily in MRI, small hematoma can be distinguished easily.