A pulmonary infarct is hemorrhagic because of the dual blood supply from the non-occluded bronchial arteries which continue to supply blood, but do not prevent the infarction.
肺梗死是出血性梗死，由于肺是双重血液供应的，支气管动脉可继续供血，但不能阻止梗死的发生。
2
Ct showed some characteristics that the focus of infarct was relatively small, the hemorrhagic focus was large and the infarct and bleeding part were not the same site.