How to recognize early cerebral infarction by head CT?

Cerebral infarction is the most common cerebral vascular disease, accounting for brain stroke, 75% of early diagnosis and treatment is to reduce the mortality, morbidity of the key
.

Cerebral infarction is the most common cerebral vascular disease, accounting for brain stroke, 75% of early diagnosis and treatment is to reduce the mortality, morbidity of the key
.

Vascular stroke diagnosis

 

According to the time of onset, cerebral infarction can be divided into 5 stages: superacute stage (<6 3="" 6="" 10="" h-3="" d-10="">1 month)
.

It is particularly important to diagnose or prompt the diagnosis of hyperacute cerebral infarction within 6 hours of onset

According to the time of onset, cerebral infarction can be divided into 5 stages: superacute stage (<6 3="" 6="" 10="" h-3="" d-10="">1 month)

Patients with cerebrovascular accidents generally need to undergo emergency CT scan to distinguish cerebral hemorrhage and cerebral infarction, and to guide the next treatment.
Therefore, CT scan is still the most commonly used method of cranial imaging examination
.

Patients with cerebrovascular accidents generally need to undergo emergency CT scan to distinguish cerebral hemorrhage and cerebral infarction, and to guide the next treatment.
Therefore, CT scan is still the most commonly used method of cranial imaging examination
.

 

Cerebral ischemia causes a series of cell biochemical process obstacles, leading to cytotoxic edema with increased intracellular water content and opening or destruction of the blood-brain barrier.
The opening or destruction of the blood-brain barrier will cause protein to leak out of the blood vessel with water, outside the cell.
The increase in water leads to the formation of vasogenic edema
.

Cerebral edema is the pathological basis of the signs of local brain swelling and low-density signs of cerebral infarction in the hyperacute phase

Cerebral ischemia causes a series of cell biochemical process obstacles, leading to cytotoxic edema with increased intracellular water content and opening or destruction of the blood-brain barrier.

1.
Middle Cerebral Artery High Density Sign

1.
Middle Cerebral Artery High Density Sign 1.
Middle Cerebral Artery High Density Sign

 

Imaging signs of occlusion of the main middle cerebral artery, representing a thrombus in the affected artery
.

Generally, it occurs at the beginning of the middle cerebral artery.

Imaging signs of occlusion of the main middle cerebral artery, representing a thrombus in the affected artery

Figure 1 Basilar artery and bilateral middle cerebral artery sclerosis

Figure 1 Basilar artery and bilateral middle cerebral artery sclerosis

 

Figure 2 High-density sign of right middle cerebral artery

Figure 2 High-density sign of right middle cerebral artery

 

In the diagnosis of middle cerebral artery hyperdensity sign, false negatives and false positives should be ruled out.
If both sides are increased or one side is slightly higher than the other, and there is no clinically cerebrovascular accident symptom, it should be regarded as cerebral arteriosclerosis, and its CT value It is generally below 55 HU, showing a striped "thin eyebrow" shadow, and the density of the basilar artery generally increases at the same time (Figure 1)
.

The CT value of the middle cerebral artery high density sign is usually 60-90 HU, showing a stiff "clubbing" shadow

The CT value of the middle cerebral artery high density sign is usually 60-90 HU, showing a stiff "clubbing" shadow

Case 1 2, Lens-shaped nucleus fuzzy 2, Lens-shaped nucleus blurred Figure 3 Left lenticular nucleus fuzzy case 2 T2WI T1WI FLAIR DWI 3.

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