Numerical analysis for the blood flow in a patient-specific ophthalmic artery |
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| Authors: | Harvey Ho Charles McGhee Peter Hunter |
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| Affiliation: | 1. Department of Emergency, Kuang Tien General Hospital, Taichung, Taiwan;2. School of Medicine, Kaohsiung Medical University, Kaohsiung Medical University Hospital, Taiwan;3. School of Medicine, National Yang-Ming University, Taipei, Taiwan;4. Department of Medicine, Taipei Veterans General Hospital, Yuanshan Branch, Yilan, Taiwan;5. Division of Nephrology, Department of Medicine, Taipei City Hospital Heping Fuyou Branch, Taipei, Taiwan;6. Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan;7. Department of Neurology, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan;8. Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan |
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| Abstract: | In this paper we investigate blood flow in the ophthalmic artery (OA) which is the major artery supplying blood to the eyes. An OA and several other cerebral arteries are digitized from a computed tomography angiography (CTA) image of an aneurysm patient. Utilizing a reduced version (1D) of the governing Navier–Stokes equations we solve the transient flow in these arteries. The flow waveform of the patient–OA is compared with that in a healthy vascular tree, and also with published ultrasonic measurements. We found that hyperemia rather than ischemia occurred in the OA, and we suggest that this was unlikely to be the cause of impaired vision in the patient. A more likely explanation is the compression of the optic nerves caused by the mass of the aneurysm. |
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