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標(biāo)題: Titlebook: Neurosurgical Applications of Transcranial Doppler Sonography; Albrecht G. Harders Book 1986 Springer-Verlag/Wien 1986 Bypass.aneurysm.ang [打印本頁(yè)]

作者: TRACT 時(shí)間: 2025-3-21 17:41
書目名稱Neurosurgical Applications of Transcranial Doppler Sonography影響因子(影響力)

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography影響因子(影響力)學(xué)科排名

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography網(wǎng)絡(luò)公開度

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography網(wǎng)絡(luò)公開度學(xué)科排名

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography被引頻次

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography被引頻次學(xué)科排名

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography年度引用

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography年度引用學(xué)科排名

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography讀者反饋

書目名稱Neurosurgical Applications of Transcranial Doppler Sonography讀者反饋學(xué)科排名

作者: 災(zāi)禍 時(shí)間: 2025-3-21 22:49
Hemodynamic Principles, and at the end of the tube, r = the radius, π = the viscosity of the blood, η= a constant, and L = the length of the tube. The volume flow I = volume per time (t) and the volume is the product of the cross-section of the tube Q and the length.

作者: engagement 時(shí)間: 2025-3-22 00:59
Prinicples of Ultrasound Doppler Sonography,source and receiver approach each other and decreases as they move apart. This physical principle became known as the Doppler effect. Details of the life and work of Doppler have been presented elsewhere by Eden [53].

作者: 中止 時(shí)間: 2025-3-22 07:07
Blood Flow Velocity Changes Under Physiological Deviations,n 20–30 years of age than in the group of persons between 60 and 70 years of age: in the MCA (3.5) there was a 20% reduction, in the MCA (4.5) 10%, in the ICA 10%, in the Al 20%, in the P1 15%, and in the basilar artery 25%.

作者: dissolution 時(shí)間: 2025-3-22 11:40

作者: 矛盾心理 時(shí)間: 2025-3-22 16:57

作者: Extricate 時(shí)間: 2025-3-22 17:42

作者: 工作 時(shí)間: 2025-3-23 00:53
Introduction,odynamics include angiography, regional cerebral blood flow measurements with the .Xenon method, and the timeconsuming positron emission tomography. Angiography remained the sole method of confirming cerebral vasospasm and subarachnoid hemorrhage after Ecker and Riemenschneider [52, 53] first reported their results of this application.

作者: engender 時(shí)間: 2025-3-23 03:06

作者: FER 時(shí)間: 2025-3-23 05:41

作者: 逢迎春日 時(shí)間: 2025-3-23 11:21

作者: cardiac-arrest 時(shí)間: 2025-3-23 15:35
ler sonographic technique in man. In 1983, Dr. Albrecht Harders took on the project of working out a clinically practicable method that would allow atraumatic measurements to be made of the blood flow velocity in the large branches ofthe circle of Willis. The technique has now become a competitor of

作者: Nibble 時(shí)間: 2025-3-23 18:19
http://image.papertrans.cn/n/image/664539.jpg

作者: 是貪求 時(shí)間: 2025-3-24 00:54

作者: paltry 時(shí)間: 2025-3-24 04:38
978-3-211-81938-8Springer-Verlag/Wien 1986

作者: 膠水 時(shí)間: 2025-3-24 07:59

作者: 暗指 時(shí)間: 2025-3-24 12:38
Vasospasm and Delayed Aneurysm Surgery,Twenty patients were operated on later than 72 hours after SAH. To eliminate angiography or surgery during severe spasm, we waited until the highest Doppler frequencies in a section of the circle of Willis were around 3 kHz. One patient was operated on with an initial frequency of 3.4 kHz.

作者: Mammal 時(shí)間: 2025-3-24 18:48

作者: GRILL 時(shí)間: 2025-3-24 21:29

作者: 惡臭 時(shí)間: 2025-3-24 23:09

作者: 不滿分子 時(shí)間: 2025-3-25 04:54
Vasospasm and Aneurysm Surgery Within 72 Hours After Subarachnoid Hemorrhage, postoperative vasospasm remains a major complication associated with early aneurysm surgery, producing delayed ischemic deficits in about 2–20% of all cases [4, 60, 75, 97, 122, 206]. Until now, the only way to establish the time course of a vasospasm has been by angiography [103, 173, 204].

作者: 不理會(huì) 時(shí)間: 2025-3-25 11:11
Extracranial-intracranial Bypass,y [120], and Doppler sonography [39, 63, 69, 77, 139]. The patency of the anastomosis has been established postoperatively by the Doppler method [69, 76, 77, 83, 89, 193], by rCBF measurements [73, 199] or by angiography.

作者: flavonoids 時(shí)間: 2025-3-25 12:41

作者: nonplus 時(shí)間: 2025-3-25 16:45

作者: IST 時(shí)間: 2025-3-25 20:27
Hemodynamic Principles,apply:.the Hagen-Poiseuille law . where I = the volume flow, which is measured in ml/min, ... p = the difference between the pressure at the beginning and at the end of the tube, r = the radius, π = the viscosity of the blood, η= a constant, and L = the length of the tube. The volume flow I = volume

作者: 群居動(dòng)物 時(shí)間: 2025-3-26 01:28
Prinicples of Ultrasound Doppler Sonography,. The frequency of light and soundwaves is changed if the source and receiver are in motion relative to one another. The frequency increases when the source and receiver approach each other and decreases as they move apart. This physical principle became known as the Doppler effect. Details of the l

作者: SUE 時(shí)間: 2025-3-26 05:45

作者: glacial 時(shí)間: 2025-3-26 10:50
Normal Values,ed into five age groups (10 years each) with five women and five men in each. The patients were placed in a supine position with the head tilted forward about 30°. In three patients (6%), no usable Doppler signals could be registered through the skull. In the remaining cases, frequencies from the pr

作者: BARK 時(shí)間: 2025-3-26 14:30
Blood Flow Velocity Changes Under Physiological Deviations,een flow velocity and age (Fig. 13). The results of the measurements showed that the flow velocities were higher among the group of volunteers betweeen 20–30 years of age than in the group of persons between 60 and 70 years of age: in the MCA (3.5) there was a 20% reduction, in the MCA (4.5) 10%, in

作者: 燒瓶 時(shí)間: 2025-3-26 20:42

作者: arbovirus 時(shí)間: 2025-3-26 23:08
Natural Time Course of Vasospasm,id hemorrhage, vasospasm occurs in 0–4.2%, after which the incidence increases up to the 7th and 10th day, the maximum is reached between the 11th and 17th day. After this, the occurrence of vasospasm falls. These results were obtained in patients who had undergone angiography only twice or, at the

作者: 稱贊 時(shí)間: 2025-3-27 01:54

作者: constellation 時(shí)間: 2025-3-27 05:50

作者: interrupt 時(shí)間: 2025-3-27 11:28
Extracranial-intracranial Bypass,y [120], and Doppler sonography [39, 63, 69, 77, 139]. The patency of the anastomosis has been established postoperatively by the Doppler method [69, 76, 77, 83, 89, 193], by rCBF measurements [73, 199] or by angiography.

作者: 山崩 時(shí)間: 2025-3-27 15:57
Arteriovenous Malformations,ndications for surgery for AVMs include advanced age, absence of symptoms, and an unfavorable location of the lesion. Surgery is indicated when the patient is younger, has seizures which do not respond to medication, when the AVM is favorably located, and when there is intracerebral space-occupying

作者: AGONY 時(shí)間: 2025-3-27 17:51
Monitoring of Frequency Spectra in the MCA During Angiography,ies in the MCA were recorded transcranially while contrast agent was being applied. Shortly after 10 ml contrast medium was injected into the cervical carotid artery, a loud noise could be heard in the Doppler sonographic recording, which lasted for 10 seconds. After the autotransfusion of 10 ml blo

作者: 鞏固 時(shí)間: 2025-3-28 01:34