Jan 21, 2025 · Subdural hemorrhage/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.

Radiopaedia.org, the peer-reviewed collaborative radiology resource

In the subacute stage, a subdural hematoma appears isodense to surrounding brain parenchyma. This makes it hard to be differentiated from brain parenchyma. Note its indirect effect in the form of mass effect described above. MRI offers more characterization of aging hematoma. It appears bright on T1 and on T2 owing to extracellular ...

Sep 30, 2022 · Subdural hemorrhage (SDH) is a collection of blood between the dura and the arachnoid layers of the meninges. They are common and can occur in any age range, usually related to a history of head trauma. Prognosis tends to depend on the extent of the bleed and associated mass effect.

May 31, 2024 · MRI is the imaging modality of choice for identifying and characterizing subdural hematomas. Signal characteristics will vary, depending on the age of the blood. After having confirmed the location of the collection as subdural on axial images, sagittal images can be utilized for measuring its extent. Treatment and prognosis

Jan 11, 2025 · Hemorrhage on MRI has highly variable imaging characteristics that depend on: the age of the blood. the type of hemoglobin present: oxy-, deoxy- or met-whether or not the red blood cell walls are intact: i.e. intra- vs extracellular. the MRI sequence

Chronic subdural hematoma is seen in the right side with a hematocrit level. Multiple T2W/FLAIR high signal intensity lesions in the periventricular white matter represent chronic small vessel changes.

May 13, 2022 · Differentiating extradural (EDH) from subdural (SDH) hemorrhage in the head is usually straightforward, but occasionally it can be challenging. SDHs are more common and there are a few distinguishing features which are usually reliable.

Aug 11, 2024 · Subdural hygromas generally occur along the supratentorial cerebral convexities; occurrence in the posterior fossa is rare 4. CT/MRI. A subdural hygroma radiographically appears as a crescentic near-CSF density/signal accumulation in the subdural space that does not extend into the sulci and rarely exerts significant mass-effect 5.

Dec 17, 2024 · Spinal epidural hematomas can occur throughout the spine but are most common in the cervicothoracic region, usually posterior to the thecal sac over 2-4 vertebral levels 1,4. Radiographic features CT. non-contrast: hyperdense (50-70 HU) extradural mass 4. MRI. Signal characteristics will vary on the age of the blood.