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Marone A, Hoi JW, Khalil MA, Kim HK, Shrikhande G, Dayal R, Bajakian DR, Hielscher AH. Modeling of the hemodynamics in the feet of patients with peripheral artery disease. BIOMEDICAL OPTICS EXPRESS 2019; 10:657-669. [PMID: 30800506 PMCID: PMC6377885 DOI: 10.1364/boe.10.000657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 11/14/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
To simulate the hemodynamic effects in the feet in response to a thigh cuff occlusion, we have developed a multi-compartmental model in which the circulatory system for the leg is represented by its electrical equivalents. Dynamic vascular optical tomographic imaging data previously obtained from 20 patients with peripheral artery disease (PAD) and 20 healthy subjects is used to test the model. Analyzing the clinical data with the support of the model yields diagnostic specificity and sensitivity in the 90-95% range, significantly higher than previously reported.
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Affiliation(s)
- A. Marone
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - J. W. Hoi
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - M. A. Khalil
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
| | - H. K. Kim
- Department of Radiology, Columbia University, New York, NY 10027, USA
| | - G. Shrikhande
- Department of Surgery, NY Presbyterian Hospital-Columbia University, New York, NY 10032, USA
- Department of Vascular Surgery, NY Hospital Queens, New York, NY 10032, USA
| | - R. Dayal
- Department of Surgery, NY Presbyterian Hospital-Columbia University, New York, NY 10032, USA
- Department of Vascular Surgery, NY Hospital Queens, New York, NY 10032, USA
| | - D. R. Bajakian
- Department of Surgery, NY Presbyterian Hospital-Columbia University, New York, NY 10032, USA
| | - A. H. Hielscher
- Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA
- Department of Radiology, Columbia University, New York, NY 10027, USA
- Department of Electrical Engineering, Columbia University, New York, NY 10027, USA
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Kumar YK, Mehta SB, Ramachandra M. Numerical modeling of vessel geometry to measure hemodynamics parameters non-invasively in cerebral arteriovenous malformation. Biomed Mater Eng 2017; 27:613-631. [PMID: 28234245 DOI: 10.3233/bme-161613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cerebral arteriovenous malformations (CAVM) are congenital lesions that contain a cluster of multiple arteriovenous shunts (NIDUS). Cardiac arrhythmia in CAVM patients causes irregular changes in blood flow and pressure in the NIDUS area. This paper proposes the framework for creating the lumped model of tortuous vessel structure near NIDUS based on radiological images. This lumped model is to analyze flow variations, with various combinations of the transient electrical signals, which simulate similar conditions of cardiac arrhythmia in CAVM patients. This results in flow variation at different nodes of the lumped model. Here we present two AVM patients with evaluation of 150 vessels locations as node points, with an accuracy of 93%, the sensitivity of 95%, and specificity of 94%. The calculated p-value is smaller than the significance level of 0.05.
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Affiliation(s)
- Y Kiran Kumar
- Philips Research, Research scholar, Manipal University, India
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