Functional posterior communicating artery of patients with posterior circulation ischemia using phase contrast magnetic resonance angiography
| Autor: | Feng Chen, Qiugen Hu, Wei Zhou, Minru Lu, Jun Li, Shaomin Yang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Cancer Research
Materials science Hemodynamics Magnetic resonance angiography 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Immunology and Microbiology (miscellaneous) medicine.artery medicine Mean flow Posterior communicating artery posterior communicating artery medicine.diagnostic_test business.industry magnetic resonance angiography Maximum flow problem General Medicine Blood flow Articles phase contrast technique Flow (mathematics) Flow velocity posterior circulation ischemia Nuclear medicine business 030217 neurology & neurosurgery |
| Zdroj: | Experimental and Therapeutic Medicine |
| ISSN: | 1792-1015 1792-0981 |
| Popis: | Posterior communicating artery (PCoA) in patients with posterior circulation ischemia (PCI) was quantitatively studied using phase contrast magnetic resonance angiography (PC-MRA). Fifty-one cases who received PC-MRA were included in the study, and divided into the research and control groups. The mean flow volume, mean flow velocity, minimum flow volume, maximum flow volume, minimum flow velocity and maximum flow velocity of the basal artery (BA), bilateral vertebral arteries, internal carotid arteries and functional posterior communicating artery (F-PCoA) were recorded, the peak heights of flow volume and flow velocity were calculated, and the typing of F-PCoA was analyzed, followed by statistical analysis. Fifty-two F-PCoAs were detected, and the median values of mean flow volume, mean flow velocity, cross-sectional area and lumen diameter were 20.31 ml/min, 4.01 cm/sec, 0.08 cm2 and 0.16 cm, respectively. The blood flow curve of F-PCoA showed the sawtooth-like changes, and there could be either unidirectional blood flow or bidirectional blood flow in one cardiac cycle. F-PCoA was divided into the following 3 types: F-PCoA was consistent with anatomical PCoA (A-PCoA), F-PCoA was inconsistent with A-PCoA, and mixed type. In the presence of F-PCoA, both the diameter and cross-sectional area of BA were small, and the maximum flow velocity and peak height of flow volume were reduced, but there was no necessary correlation with the occurrence of PCI. Both flow volume and flow velocity of BA in the research group were reduced, and the forward posterior shunt flow of F-PCoA was increased. Hemodynamic characteristics of F-PCoA can be analyzed via PC-MRA. The forward posterior shunt flow of F-PCoA can provide references for the clinical auxiliary diagnosis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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