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Objective:To explore the clinical value of auto-tube voltage controlled contrast medium injection based on 3rd generation dual source CT coronary angiography.Methods:Patients with suspected coronary heart disease were prospectively enrolled from March to December, 2019 at Shandong Provincial Hospital and coronary CT angiography (CCTA) images were acquired from 220 patients, including 107 male, 113 female, aged from 34 to 82 years. Patients were divided into experimental and control groups with the random number table. In experimental group (113 patients), automatic tube voltage selection technology was used, the contrast agent dosage was set according to tube voltage. The injection time was 10 s; In control group (107 patients), tube voltage and contrast agent dosage were set according to weights. The injection time was 12 s. Images were acquired by ECG gating using the 3rd generation dual source CT (DSCT) with intravenous injection of 350 mg/L contrast medium, followed up with saline of the same dose. Interclass correlation coefficient (ICC) was used to evaluate the individual bias of raters. The rank sum test was used to evaluate the group-level differences of subjective image quality and contrast agent dosage. The t-test was used to evaluate the group-level differences of objective image quality and effective radiation dose (ED). Results:The noise of aortic root in the two groups were (27±4), (26±5) HU, respectively, with no statistical difference ( t=1.017, P=0.284). All ICC values were more than 0.5 indicating good correlation batween 2 raters. The objective image quality score was no significant differences( P>0.05). The subjective image quality scores of the two groups were 1.15±0.10 and 1.18±0.12, respectively, with no statistical difference (Z=-0.231, P=0.818). The ED value (2.2±0.6) mSv of experimental group was statistically lower than that of control group (4.6±1.8) mSv ( t=-13.107, P<0.001); the contrast dosage (35±7) ml of experimental group was statistically lower than that of control group（46±6）ml ( t=-8.699, P<0.001). Conclusions:The novel scanning protocol with auto-tube voltage based contrast agent setting is more convenient and practical with reduced radiation dose and contrast dose, while maintaining image quality.
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The application of medical imaging technology is playing an important role in diagnosis and treatment of cancer.In clinic,the most commonly used imaging technology to detect cancers are X-ray computed tomo graphy,nuclide imaging,magnetic resonance imaging and near-infrared fluorescence imaging.Contrast agents could enhance imaging signals and increase the sensitivity and accuracy of cancer detection.Neverthness,most of clinically used contrast agents have problems such as short retention time and tumor targeting insufficient,which is not favorable to cancer detecting.So it is of great significance to develop tumor targeting contrast agents.Currently,targeting strategies are divided into three types:passive targeting,active targeting and activatable targeting.In this review,we conclude the recent progress and applications of tumor targeting contrast agents of different imaging modilities.Besides,the future development of tumor targeting contrast agents is also prospected.
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Objective:To evaluate the curative effect of mirror therapy combined with rehabilitation training in the treatment of stroke hemiplegic upper limb motor dysfunction. Methods:To choose 48 patients, were randomly divided into control group, 24 cases in each group to observe, are basic rehabilitation training, observation group joint mirror therapy, using FMA, ARAT, BMI, respectively, evaluation of patients with general motor function, upper limb motor function, daily life ability, numerical measurement of radial carpal extensor emg. Results:After the treatment, the control group, the observation group the FMA level, ARAT level, MBI level, EMG level was higher than that before treatment, the observation group than that in the control group, the observation group FMA, ARAT, MBI, the difference of EMG signals is higher than that of control group, with significant difference(t=14.14,t=4.55,t=5.84, t=9.14;P<0.05).Conclusion: mirror therapy combined with rehabilitation training is really helpful to upper extremity motor functional recovery of stroke patients with hemiplegia, is of positive significance to improve the living ability of the patients.
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Objective To investigate the change of the neutrophil apoptosis and neutrophil respiratory burst in the patients and the effect of ulinastatin on the apoptosis of neutrophil and respiratory burst of neutrophil during cardiopulmonary bypass (CPB). Methods Sixty-two patients undergoing valve replacement with CPB were randomly divided into two groups: ulinastatin group (U group, 31 cases) and control group (C group, 31 cases). In U group patients received ulinastatin after induction of anesthesia. In C group patients received equal volume of normal saline, instead of ulinastatin. Arterial blood was obtained before operation (T1), 30 min after the start of CPB (T2), 30 min after the termination of CPB (T3). The apoptosis of neutrophil and respiratory burst of neutrophil were measured by flow cytometer. The level of superoxide dismutase (SOD) and malondialdehyde (MDA) were measured by kit. Results In C group, compared with T1 [(66.57±5.93)%], the rate of the apoptosis of neutrophil was significantly decreased at T2[(55.37±3.51)%] and T3 [(48.92±4.21)%] (P<0.05). And in U group, compared with T1 [(73.57±7.94)%], the rate of the apoptosis of neutrophil was significantly decreased at T2 [(68.34±4.92)% ] and T3 [(62.13±4.76)%] (P<0.05), And it reached to the minimum at T3. The rate of the neutrephil apeptosis was significantly lower in C group than that in U group (P<0.05). The respiratory burst of neutrophil increased significantly after the start of CPB and reached to the peak at T3[C group (1422.50±89.75) MCF,U group (1156.52±93.20) MCF]. The respiratory burst of neutrophil in U group was significandy lower than that in C group at T2 and T3 (P<0.05). The vitality of SOD decreased significantly after the start of operation in the two groups (P<0.05). The level of MDA increased significantly after the start of operation in the two groups, and reached to the peak at T3. The vitality of SOD in C group was significantly lower than that in U group at T3 (P<0.05). The level of MDA in C group was significantly higher than that in U group at T3 (P<0.05). Conclusions The rate of neutrophil apoptosis decreased and the respiratory burst of neutrophil increased during CPB. By improving the apoptosis of neutrophil and reducing the respiratory burst of neutrophil, ulinastatin can inhibit inflammatory reaction during CPB. Meanwhile, ulinastatin can improve the vitality of SOD and reduce the level of MDA. In conclusion, ulinastatin has a significant protective effect during CPB.