151 people aged between 20 and 73 were examined.
Cerebral vessels were screened by the method of MDCT-angiography.
36 patients aged between 20 and 73 created a control group.
At the time of examination the diagnosis of hypertension wasn’t found out.
Other 115 patients were divided into 3 groups.
The main criterion of the division was the level of total cardiovascular risk (TCR) which was determined by the SCORE model [1].
The first group of the patients with the low level of total cardiovascular risk included 21 (13,91%) patients; 8 (38,1%) patients were male,
13 (61.9%) – female.
The average age of the patients was 35,29±1,97 years old.
The second group of the patients with the medium level of total cardiovascular risk contained 32 (21,19%) people,
13 (40,63%) people were male and 19 (59.37%) – female.
The average age of the patients of this group was 45,78±1,87 years old.
The third group contained 62 (41,06%) patients with the high and very high level of total cardiovascular risk,
the average age was 54,48±1,37 years.
There were 22 (46,77%) male and 28 (53,23%) female.
110 patients were examined by using the 4-slice scanner and 41 patients were examined by 128 slice scanner.
During the examination of the patients by the 4-slice scanner we used two methods of its realization: the protocol “Cerebral CTA” and the technique of CTA – bolus-tracking – “Cerebral CTA Sure Start “protocol.
Depending on the area of research two protocols were used for the 128–slice CT: “Neuro DSACT” and “Carotid DSACT”.
During our research we used such iodine-containing contrast agents as iodixanol -320 and iopromide -370, the volume of which depended on the type of CT and research protocols and ranged between 50-100ml [5].
Data processing was performed on workstations.
The following indicants were estimated: course of major intracranial vessels such as the vertebral artery (VA),
the basilar artery(BA),
the anterior (ACA),
middle (MCA) and posterior cerebral arteries (PCA) ,
anterior (AcA) and posterior communicating arteries (PcA),
internal carotid artery(ICA); their anatomical features; innate characteristics of the course and branches; structural changes and the degree of artery stenosis that was calculated in the NASCET formula.