Validation study of intravascular Doppler sonography for determination of blood flow velocity
- VernacularTitle:血管内多普勒超声测定血流速度的可行性研究
- Author:
Lin YIN
;
Chunxiang LIU
;
Rongjiang WANG
- Publication Type:Journal Article
- Keywords:
Ultrasonography, Doppler;
Angioplasty;
Vessel stenosis;
Microprobe
- From:
Chinese Journal of Radiology
1994;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the validation of measuring blood flow velocity intravascularly using a new Doppler microprobe. Methods Catheterization and signal recording were investigated using a new 0.3 mm diameter microprobe in 40 patients during routine cerebral angiography (45 vessels). Blood flow velocity was determined using this technique (intravascualar Doppler sonography, IVDS) in another 14 patients with femoral-popliteal stenosis before and after percutaneous transluminal angioplasty (PTA). Results IVDS was successful in 95.6% healthy vessels (43/45) and recorded the same typical flow-pulse curve as seen in transcutaneous measurement. Measurement of blood flow velocity was successful in 12 out of 14 patients (86%) with femoral-popliteal stenosis before and after PTA. IVDS could verify that blood flow velocity increased significantly after successful PTA (t= 4.01, P
