Computed Tomography📍 Brain更新于 2025-12-15影像科审核
Subdural Hematoma
了解 Brain Computed Tomography 影像中的 Subdural Hematoma，明确其含义与下一步措施。
影像表现
Computed Tomography FindingCrescent-shaped extra-axial hyperdensity crossing suture lines; may become isodense/hypodense over time.
临床意义
Common after head trauma; mass effect can require urgent surgical evacuation.
What is a Subdural Hematoma?
Venous bleeding between dura and arachnoid, often from bridging vein injury. CT rapidly confirms size and shift.
Imaging Appearance
- Crescent hyperdensity along convexity or falx
- Crosses sutures but not dural reflections
- Acute: hyperdense; subacute: isodense; chronic: hypodense
- Look for midline shift, effaced sulci
Clinical Significance
- Acute SDH may need craniotomy
- Chronic SDH often treated with burr-hole drainage
Symptoms
- Headache, confusion, focal deficits, gait instability
Diagnosis
- Non-contrast head CT
- Labs: renal/electrolytes for perioperative planning
Treatment
- Neurosurgical evaluation
- Reversal of anticoagulation if applicable
- Close neuro checks; repeat imaging if change
Prognosis
- Good if treated before herniation; chronic SDH has high recurrence risk
What Should You Do?
- Seek emergency evaluation after head trauma with symptoms.
- Follow neurosurgical plan and avoid re-injury.
- Report worsening headache or weakness immediately.
Medical Disclaimer: Educational only; follow neurosurgical advice.
搭配化验结果解读
当影像出现 Subdural Hematoma 时，医生常会查看这些化验：
相关影像术语
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