Fig. 2
From: Gross pathology of brain mass lesions by intraoperative ultrasonography: a comparative study
Imaging of intracerebral hematomas by CT, MRI, and IOUS. Arrows 1 refer to the hematoma and arrows 2 refer to brain edema. Case a: Acute intracerebral hematoma; homogenous hyper-dense in CT on day 1, homogenous hypo-intense in MRI T1 on day 1 and heterogeneous mostly hyper-echogenic in IOUS on day 2. Case b: Early sub-acute intracerebral hematoma; hyper-dense mostly homogenous in CT on day 5, heterogeneous hypo-intense in MRI T1 with contrast on day 6 and heterogeneous mostly hyper-echogenic in IOUS on day 7. Case c: Intracerebral hematoma; hyper-dense mostly homogenous in CT on day 5, homogenous hyper-intense in MRI on day 15 (late sub-acute) and homogeneous iso-echogenic in IOUS on day 15. Case d: Intracerebral hematoma; heterogeneous mixed densities in CT on day 10, homogenous hypo-intense in MRI on day 60 and heterogeneous hypo-echogenic in IOUS on day 60