查询词典 blood flow

Objective To study the power spectrum density of blood flow ultrasonic Doppler signal using wavelet analysis. Method Doppler signal of blood flow in human common carotid artery was studied with wavelet scalogram analysis, an affine smoothing Wigner Ville transform with a constant "Q" character. Result Wavelet scalogram of blood flow ultrasonic signal had a higher distinguishability than STFT spectrogram in the low frequency portion, but had poorer decussation terms than spectrogram.

对于平稳信号的处理工具仍然是Fourier变换，但是，在实际应用中的绝大多数信号是非平稳的，现在看来处理非平稳信号的主要工具将是小波变换，这主要是因为传统的Fourier变换分析信号时，时间和频率分辨率精度是固定不变的，而利用小波变换分析信号，在信号高频段时间分辨率精度也较高，在信号低频段频率分辨率精度较高，这很符合非平稳信号的特点。

Results: 72 cases with intrauterine residual and 8 cases with endometritis-like echo showed local blood flow increase, appearing type low resistance arterial blood flow spectrum, RI.6, 6 cases without blood flow signal are obsolescent blood clot.

结果：72例宫内残流物及8例宫内膜炎性改变的病例显示局灶性血流丰富区，呈低阻力型动脉血流颇谱，RI.6；6例未探及有血流信号的病例为陈旧性血块。

The effects of QDPTP on cerebral blood flow and artery blood pressure in anesthetized rats The regional cerebral blood flow in cerebral pia mater was examined by Laser Doppler Flowmeter and the artery blood pressure (including mean systolic pressure, mean diastolic pressure and mean blood pressure) were monitored by the electrophysiological polygraph before and after drug administration.

结果表明：模型组脑组织及血清IL1-β含量分别为1006.4±247.1 pg/ml和370.8±76.6 pg/ml，与之相比，QDPTP中剂量(550.7±99.8，268±64.6)组中脑组织及血清中IL1-β的含量显著降低(P.01)，川芎嗪脑也明显减少组织IL1-β的含量(627.8±144.7，P.05)。 QDPTP对麻醉大鼠局部脑血流量和动脉血压的影响采用激光多普勒血流仪测量大鼠软脑膜局部的血灌注量，其被视为局部的脑血流量。

Objective: To determine the effects of sodium salicylate on cochlear blood flow and explore the mechanism of salicylate ototoxicity.

提要 目的：检测水杨酸钠对耳蜗血流量(Cochlear blood flow，CoBF)的影响，探讨水杨酸盐耳毒性发生的机制。

Methods 100 patients with CSA and 100 people in the control group were examined by TCD,the change of blood flow of cerebrovascular (such as the velocity of blood flow, the form of spectrum, the souffle of blood flow) was analyzed.

应用TCD对100例CSA患者和100例对照组进行脑血流动力学进行检测，再对TCD检测正常的CSA患者和对照组进行TCD转颈试验，并将检测结果进行分析。

Twelve tumors were solid and three contained cystic components. Nine were inhomogeneously hypoechoic. Two were homogeneously hypoechoic. Two were inhomogeneously isoechoic. Two were homogeneously isoechoic. Two contained microcalcification. One with acoustic shadowing. Twelve were well-defined and three were ill-defined. Fourteen were regular and one was irregular. Four had acoustic halo. Six were ecstatic. Nine were not ecstatic. Thirteen were examined with color Doppler ultrasound. Nine had abundent branched blood flow within the tumor and ring blood flow around. Two had short linear blood flow within the tumor and ring flow around.

不均质低回声9个，均匀低回声2个，不均质中等回声2个，均匀中等回声2个。2个肿瘤内见细小钙化斑，1个伴声衰减。12个肿瘤边界清，3个边界欠清。14个肿瘤形态规则，1个形态不规则。4个肿瘤伴&晕环征&。6个肿瘤有膨胀感，9个肿瘤无明显膨胀感。13个肿瘤行彩色超声检查，9个内部见丰富分枝状血流，周边见环状血流，2个内部见短线状血流，周边环状，仅2个内部无彩色血流，周边见点状彩色血流。

The purpose of our study was to evaluate the effects of graded head-up tilting on common carotid blood flow volume, pulsatility index, blood pressure, and heart rate of patients with SCI and of healthy subjects.

本研究的主要目的，在评估起立过程中，脊髓损伤者和正常人之总颈动脉血流量（common carotid blood flow volume）、脉波变化指数、心率和血压的变化与差异。

The trophoblast blood flow spectrum could be easily detected with the guide of CDE.The ultrasonic findings were characterized by broad arterial flow spectrum,high diastolic component of the low resistance trophoblastic flow,RI＝0.40～0.51 with single or biphasic spectrum.The salpingian ring with high blood flow indicated early and complete salpingian pregnancy.

结果：①异位妊娠包块血流信号丰富，血管连续性好，能较完整显示血管床、血管网及范围广的低流速血流信号；②脉冲多普勒取样为滋养层周围性血流频谱，其特征为：频谱增宽、单相或双相持续存在、阻力降低(RI＝0.44±0.04)、舒张期血流丰富的动脉频谱；③具有鲜明丰富的滋养层周围性彩色血流频谱特征的&输卵管环&是早期输卵管妊娠的特征性表现，并提示是输卵管完整存在的标志。

The patients have used their full dentures for 1—3 months .(2) With the use of transcranial color Doppler analyzer the blood flow in the brain was measured before and 10 minutes after mastication in 17 subjects .

应用经颅彩色多谱勒超声扫描仪(Transcranial Color Doppler ，TCCD)探测牙列完整受试者及无牙颌患者在安静状态下和咀嚼无糖口香糖10分钟后脑血流速的改变，对大脑中动脉收缩期峰流速(systolic peak flow velocity ，Vs)、舒张期末峰流速(enddiastolic peak flow velocity ，Vd)、平均峰流速(mean peak flow velocity ，Vm)进行统计分析。

Methos Color Dppler sonography was used to assess the changes of hernodynamics of 90 patients with acute scrotum The intra and exera-testicular blood flow were found to be either normd diminished; absent or increased The sensitively and specificy of CDS in the diagnosis of ten testicular torsion in which blood flow was completely deprive were 100%; five of them have violent sports The sensitivity specificity of CDS in the diagnosis of tesicular and epididymal inflammation in which blood flow were 86% and 100%.

应用彩色多普勒血流超声诊断仪对90例急性阴囊肿痛患者的睾丸、附睾进行检测。并观察睾丸、附睾的血流动力学改变情况。结果(1)无血流灌注10例，低血流灌注20例，高血流灌注43例，正常血流灌注17例；(2)睾丸扭转10例，睾丸炎及附睾炎50例，阴囊外伤30例。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。