All that bleeds is not black: susceptibility weighted imaging of . . . Axial T1WI (A) and axial SWI (B) images reveal a focal left posterior cerebral convexity subdural hematoma (white arrows) which is hyperintense on T1WI and SWI, thus leading to the “shine through” effect of high T1 signal on SWI of extracellular methemoglobin in late subacute hemorrhage
Subdural hemorrhage | Radiology Reference Article | Radiopaedia. org Subdural hemorrhage or hematoma (SDH) is a collection of blood accumulating in the subdural space Subdural hemorrhage can happen in any age group, is mainly due to head trauma and CT scans are usually sufficient to make the diagnosis
Limitations of T2*–Gradient Recalled-Echo and Susceptibility-Weighted . . . A possible misconception among radiologists is that chronic subdural hemorrhage should show some degree of blooming on T2*–gradient recalled-echo or susceptibility-weighted sequences such as SWI and susceptibility-weighted angiography, which is not necessarily true
Traumatic Intracranial Hemorrhage - The Radiology Assistant Subarachnoid hemorrhage is acute bleeding under the arachnoid Most commonly seen in rupture of an aneurysm or as a result of trauma Subdural hematoma is a bleeding between the inner layer of the dura mater and the arachnoid mater of the meninges
Subdural Hematoma-Induced Cortical Perforator Thrombosis Causing . . . Subdural hematomas may cause ischemic strokes through direct mechanical compression of pial vessels, leading to perforator vessel thrombosis and small infarcts A 71-year-old woman with traumatic left cerebral convexity subdural hematoma presented with right face, arm, and leg weakness
MRI appearance of chronic subdural hematoma - Frontiers In approximately two-thirds of the cSDH (62%), there was a mass-like enhancement of the hematoma Most hematomas (89%) were partially hypointense on T2 * -GRE and or susceptibility-weighted imaging (SWI) Restricted diffusion was detected in approximately one-third of the hematomas (33%)
Susceptibility-weighted imaging in intracranial hemorrhage: not all . . . It is a common misconception that blood is always black on SWI, and it is important to realize that hemorrhage has a variable appearance in different stages on SWI Furthermore, the presence of a low signal on SWI does not equal the presence of blood products