Diagnostic Value Of Color Doppler Ultrasound To The Vertebral Artery Tortuous And Abnormal Lesions

Objective: This study analyzed by color Doppler ultrasound examination and the three-dimensional imaging or CT proved to be a tortuous vertebral artery 30 cases of patients with audio-visual information, To assess the Diagnostic value of Color Doppler ultrasound to the vertebral artery running and abnormal lesionsMethods: Selected in hospital in-patients and out-patient 30 cases that whose vertebral artery running distortions (by CT, or MRI imaging to verify, and so on), aged 47 to 80 years old, 13 males and 17 females, aged 30 to 70-year-old, The average years is 50±2.1y. Choice of 50 cases of normal healthy vertebral artery of the same age group compared to observe. Vertebral artery and asked whether there was distortion in patients with high blood pressure, high cholesterol, obesity and other diseases.1 Using PHILIPS - IU22 color Doppler ultrasound. the probes were L9-3 and C5-2.Subject to inspection, the inspection service before 3 day of vasoactive drugs ban. Quiet state examination was taken by the supine position, putting the pillow in the back of the neck, neck fully exposed. Placed the probe in vertical subjects. Firstly acquire the carotid artery image, then get the probe tilted slightly outward to display the vertebral artery graphics. The main scanning Department of vertebral artery origin, initial segment and the intervertebral segment, the vertebral artery of atlas loop segment because it is difficult in general to show that as a routine examination. Doppler sample volume <1. 5 mm, angle <60. First of all two-dimensional sonographic observation of bilateral vertebral artery of the course, the lumen structure, using color Doppler to observe the blood flow filling, flow direction (if necessary, the use of power Doppler imaging observations) to determine the extracranial vertebral artery Traveling there twist, such as the existence of vertebral artery should be measured twist twist twist the largest diameter and the vertebral artery diameter before and after D, vertebral artery hemodynamics parameters. Mechanical parameters of vertebral artery blood flow measurement method: using PHILIPS's IU22 ultrasound diagnostic measurements. Access to spectrum, and then separately measured maximum flow rate of PSV, the average flow rate of TAV, the resistance index RI and the discrete index VI, according to the formula calculation bleeding flow Q, measured three times, taking the average. Observed that the vertebral artery after twist reusable C5-2 probe under observation.Spectral line the average flow rate measurement indicators have:①peak systolic velocity (PSV)②mean velocity (TAV)③resistance index (RI)④discrete index (VT)⑤per minute blood flow Q (according to the formula Q = TAV×A×T, A = D2 / 4, T = 60 seconds)Statistically: In this study, SPSS11.5 statistical software for analysis of the data, the measurement parameters to mean + standard deviation of that inter-group comparison using one-way ANOVA and F test, comparing the use of count data in four tables, to P <0.05 for statistical significance.Results:1 2D ultrasonographic featuresDetection by two-dimensional high-frequency ultrasound and extracranial vertebral artery first, bismore ideal for the two parallel linear echoes, high-resolution display wall of the three-tier Tortuous group at two-dimensional ultrasound can be seen under the vertebral artery wall tortuous course obvious symptoms.2 CDFI appearanceNormal group, filling a good flow for the laminar flow. Tortuous group color flow can be seen running was "C" "V" or "S". Artery twist to a turning point as a dividing line, which was red, blue two flow signals.3 Pulsed DopplerNormal blood flow spectrum was reduced sambong type, narrow-band, frequency window of existence, there is a clear diastolic forward flow. Department twist group showed reduction in peak systolic velocity, end diastolic flow velocity decreased, the average flow rate to reduce the Doppler spectrum.4 Hemodynamic Parameters: diameter (D), maximum velocity (PSV), resistive index (RI), dispersion index (VI) Twist group and control group D, PSV, RI, VI, Q and other parameters compared between the two sample t test to exclude vascular twist twist bilateral vertebral artery in 2 cases, four vessels. A total of 28 vascular twist. Twist each vessel is divided into pre-twist, twist, the three paragraphs after the twist4.1 Twist before vascular parameters compared with the control group of two independent sample t test Diameter (D): t= 1.67, p> 0.05, no statistical significance; maximum velocity (PSV): t = 3.03, p <0.05, there is statistical significance; that vascular twist before reducing the flow rate than the control group. Resistance index (RI): t = 1.93, p> 0.05, no statistical significance; discrete index (VI): t = 1.75, p> 0.05, no statistical significance4.2 Department of the blood flow parameters of twist compared with the control group in two independent samples t testD: t = 2.70, p <0.05, there is statistical significance, wider diameter than the control group; PSV: t = 2.73, p <0.05, there is statistical significance, higher flow rate than the control group; RI: t = 4.14, p <0.05, there is statistical significance, the resistance index higher than the control group; VI: t = 15.35, p <0.05, there is statistically significant, discrete index higher than the control group.4.3 After the blood flow parameters of twist compared with the control group in two independent samples t D: t = 1.04, p> 0.05, no statistical significance; PSV: t = 0.08, p> 0.05, no statistical significance; RI: t = 2.15, p <0.05, there is statistical significance, the resistance index than the control group increased;VI: t = 9.88, p <0.05, there is statistically significant, discrete index higher than the control group.4.4 Vascular twist, twist twist before and after the blood flow parameters of the comparison between the two independent samples t testMaximum velocity (PSV), t = 2.29, p <0.05, there is statistical significance; discrete index (VI), t = 9.24, p <0.05, there is statistical significance.4.5 Twist vascular blood flow with the control group comparison of two independent samples t test Blood flow in the formula Q = TAV×A×T: t = 2.80 p <0.05 have statistical significance, that is, blood flow twist group than control group.5 According to the clinical performance of 30 cases of patients who twist, 23 people exist dizziness, numb hands and feet and other symptoms, the control group of 35 people, only five cases of occasional symptoms such as dizziness. Comparison between four table, X2 = 25.64, P <0.05, there is statistical significance. Twist group higher than the incidence of dizziness.6 Twist group of patients with extracranial color Doppler ultrasound can be observed that the initial Department, cervical, interbody paragraph. In this study, who found the whole tortuous 4, paragraph twist interbody who happen often. Blood vessels were separately twist S, C, V (is upright or downright), the present study were found in V-shaped.7 In Vertebral artery twist 15 persons have high blood pressure or high blood cholesterol history, the control group 7 persons have high blood pressure or high blood cholesterol history. Comparison between fourfold table, X2 = 6.943, P <0.05, there is statistical significance. High blood pressure that is between the two groups, the incidence of high blood cholesterol or hypertension is different between the twist of vertebral artery and the control group .Conclusion:In this study, 2D, CDFI, CDE, PW, such as a number of technology applications, through the observation of vertebral artery Traveling who twist diameter, peak systolic velocity, resistance index, dispersion index, per-minute changes in blood flow to explore the ultrasound of vertebral artery Traveling Value twist observation and to explore the vertebral artery in patients with Traveling twist and dizziness, numb hands and feet, such as the relationship between clinical symptoms. The results showed that patients with vertebral artery twist, twist twist vessel at a maximum flow rate of the former PSV compared with the control group there is statistically significant, lower than the control group vascular twist, and twist below the paragraph after the blood vessels. Department of Vascular twist twist at the diameter D, the highest velocity PSV, RI, VI, all higher than those observed for vertebral artery twist must have meaning. Observed that the twist happened in the intervertebral vessels were found above, can be positive S, V,∝(uprihgt) shape, such as, vascular twist will affect the blood supply, research group proved to twist every minute blood flow compared with control group, meaning larger, per minute blood flow reduction in vertebrobasilar insufficiency, occurs in patients with dizziness, numb hands and feet and so on. Through the use of conventional ultrasonography and color Doppler flow technology technical situation, measurement of vertebral artery twist diameter, maximum systolic velocity, and, through the formula Q = 1/4πVD2×60 calculation of blood flow per minute, to give the clinical Doctor to provide a more objective, more accurate information on emerging clinical symptoms of dizziness, such as providing a more objective basis for the diagnosis of vertebral artery twist for neurological and spinal surgeon at the operation in the region also has very important significance, vertebral artery would twist the neck injury and surgery of vertebral artery injury more easily, so preoperative vertebral artery predictable twist, for the skull base, cervical spine surgery joints and neck region is very important for choosing the best surgical method to provide an objective basis to provide super - sound as painless. Non-invasive, simple and quick and so was a bit more and more acceptable to many patients.