Keywords
Last Name

Vijaya Kolachalama, PhD

TitleAdjunct Assistant Professor
InstitutionBoston University School of Medicine
DepartmentMedicine
DivisionCardiovascular Medicine
Address
 Research Expertise & Professional Interests
The Kolachalama Laboratory's work is focused on three areas:

1. Machine learning and computer vision for prognosis

Data analytics is poised to help deliver precision medicine, yet achieving this goal is nontrivial. Machine learning and image processing techniques along with developments in software and hardware technologies allow us to consider questions across scales. We leverage these tools for pattern recognition and understanding pathophysiological mechanisms that would pave way towards developing biomedical technologies that are of prognostic relevance.

2. Machine learning and cardiovascular simulation

Cardiovascular applications are among the most important and widely studied cases of medical simulation. Devices such as stents and balloon catheters are used millions of times each year to help manage coronary heart disease, the leading cause of global mortality. Disease progression as well as the success and failure of such devices depend on local physical and biochemical processes coupled within complex physiological environments. Designing and achieving optimal device performance requires that we understand the confluence of fluid flow, drug transport and tissue reactivity coupled within relevant, often patient-specific environments. Recognizing this need, we utilize the theory and practice the application of machine learning to study a range of physiologic factors and their variations on several outputs of interest within the cardiovascular domain.

3. Mechanisms of endovascular therapies

Computational modeling approaches quantify aspects of device-based therapies at a resolution that is not possible to achieve using bench-top investigation or in vivo models alone. The models that we developed have explained the role of physiologic factors in determining maps of spatiotemporal arterial distribution patterns for drug-eluting devices as a function of intrinsic device design, relative device position and pulsatile nature of blood flow. We have extended models simulating idealized settings of physiology to real world issues and further examine and predict arterial tissue response that varies due to procedural settings, device composition, arterial wall ultrastructure and disease, physiologic changes within complex vascular anatomies, vascular injury and the mode of drug delivery. Understanding the mechanisms of endovascular therapies and developing new technologies is one of the core research themes of our laboratory.

 Publications
Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
List All   |   Timeline
  1. Shashar M, Siwak J, Tapan U, Lee SY, Meyer RD, Parrack P, Tan J, Khatami F, Francis J, Zhao Q, Hartshorn K, Kolachalama VB, Rahimi N, Chitalia V. c-Cbl mediates the degradation of tumorigenic nuclear ß-catenin contributing to the heterogeneity in Wnt activity in colorectal tumors. Oncotarget. 2016 11 01; 7(44):71136-71150. PMID: 27661103.
    View in: PubMed
  2. Mandal PK, Sarifuddin, Kolachalama VB. Computational Model of Drug-Coated Balloon Delivery in a Patient-Specific Arterial Vessel with Heterogeneous Tissue Composition. Cardiovasc Eng Technol. 2016 Dec; 7(4):406-419. PMID: 27443840.
    View in: PubMed
  3. O'Brien CC, Kolandaivelu K, Brown J, Lopes AC, Kunio M, Kolachalama VB, Edelman ER. Constraining OCT with Knowledge of Device Design Enables High Accuracy Hemodynamic Assessment of Endovascular Implants. PLoS One. 2016; 11(2):e0149178. PMID: 26906566.
    View in: PubMed
  4. O'Brien CC, Lopes AC, Kolandaivelu K, Kunio M, Brown J, Kolachalama VB, Conway C, Bailey L, Markham P, Costa M, Ware J, Edelman ER. Vascular Response to Experimental Stent Malapposition and Under-Expansion. Ann Biomed Eng. 2016 Jul; 44(7):2251-60. PMID: 26732391.
    View in: PubMed
  5. Ferdous J, Kolachalama VB, Kolandaivelu K, Shazly T. Degree of bioresorbable vascular scaffold expansion modulates loss of essential function. Acta Biomater. 2015 Oct; 26:195-204. PMID: 26277377.
    View in: PubMed
  6. Kolandaivelu K, O'Brien CC, Shazly T, Edelman ER, Kolachalama VB. Enhancing physiologic simulations using supervised learning on coarse mesh solutions. J R Soc Interface. 2015 Mar 6; 12(104):20141073. PMID: 25652458.
    View in: PubMed
  7. Alshareef M, Krishna V, Ferdous J, Alshareef A, Kindy M, Kolachalama VB, Shazly T. Effect of spinal cord compression on local vascular blood flow and perfusion capacity. PLoS One. 2014; 9(9):e108820. PMID: 25268384.
    View in: PubMed
  8. Martorell J, Santomá P, Kolandaivelu K, Kolachalama VB, Melgar-Lesmes P, Molins JJ, Garcia L, Edelman ER, Balcells M. Extent of flow recirculation governs expression of atherosclerotic and thrombotic biomarkers in arterial bifurcations. Cardiovasc Res. 2014 Jul 1; 103(1):37-46. PMID: 24841070.
    View in: PubMed
  9. Kolachalama VB, Pacetti SD, Franses JW, Stankus JJ, Zhao HQ, Shazly T, Nikanorov A, Schwartz LB, Tzafriri AR, Edelman ER. Mechanisms of tissue uptake and retention in zotarolimus-coated balloon therapy. Circulation. 2013 May 21; 127(20):2047-55. PMID: 23584359.
    View in: PubMed
  10. O'Brien CC, Kolachalama VB, Barber TJ, Simmons A, Edelman ER. Impact of flow pulsatility on arterial drug distribution in stent-based therapy. J Control Release. 2013 Jun 10; 168(2):115-24. PMID: 23541929.
    View in: PubMed
  11. Ferdous J, Kolachalama VB, Shazly T. Impact of polymer structure and composition on fully resorbable endovascular scaffold performance. Acta Biomater. 2013 Apr; 9(4):6052-61. PMID: 23261926.
    View in: PubMed
  12. Baker AB, Gibson WJ, Kolachalama VB, Golomb M, Indolfi L, Spruell C, Zcharia E, Vlodavsky I, Edelman ER. Heparanase regulates thrombosis in vascular injury and stent-induced flow disturbance. J Am Coll Cardiol. 2012 Apr 24; 59(17):1551-60. PMID: 22516446.
    View in: PubMed
  13. Kniazeva T, Epshteyn AA, Hsiao JC, Kim ES, Kolachalama VB, Charest JL, Borenstein JT. Performance and scaling effects in a multilayer microfluidic extracorporeal lung oxygenation device. Lab Chip. 2012 May 7; 12(9):1686-95. PMID: 22418858.
    View in: PubMed
  14. Shazly T, Kolachalama VB, Ferdous J, Oberhauser JP, Hossainy S, Edelman ER. Assessment of material by-product fate from bioresorbable vascular scaffolds. Ann Biomed Eng. 2012 Apr; 40(4):955-65. PMID: 22042625.
    View in: PubMed
  15. Kolandaivelu K, Swaminathan R, Gibson WJ, Kolachalama VB, Nguyen-Ehrenreich KL, Giddings VL, Coleman L, Wong GK, Edelman ER. Stent thrombogenicity early in high-risk interventional settings is driven by stent design and deployment and protected by polymer-drug coatings. Circulation. 2011 Apr 5; 123(13):1400-9. PMID: 21422389.
    View in: PubMed
  16. Kolachalama VB, Levine EG, Edelman ER. Luminal flow amplifies stent-based drug deposition in arterial bifurcations. PLoS One. 2009; 4(12):e8105. PMID: 19956555.
    View in: PubMed
  17. Tzafriri AR, Vukmirovic N, Kolachalama VB, Astafieva I, Edelman ER. Lesion complexity determines arterial drug distribution after local drug delivery. J Control Release. 2010 Mar 19; 142(3):332-8. PMID: 19925836.
    View in: PubMed
  18. Kolachalama VB, Tzafriri AR, Arifin DY, Edelman ER. Luminal flow patterns dictate arterial drug deposition in stent-based delivery. J Control Release. 2009 Jan 5; 133(1):24-30. PMID: 18926864.
    View in: PubMed
  19. Kolachalama VB, Bressloff NW, Nair PB, Shearman CP. Predictive haemodynamics in a one-dimensional human carotid artery bifurcation. Part II: Application to graft design. IEEE Trans Biomed Eng. 2008 Mar; 55(3):1176-84. PMID: 18334411.
    View in: PubMed
  20. Kolachalama VB, Bressloff NW, Nair PB. Mining data from hemodynamic simulations via Bayesian emulation. Biomed Eng Online. 2007; 6:47. PMID: 18078522.
    View in: PubMed
  21. Kolachalama VB, Bressloff NW, Nair PB, Shearman CP. Predictive haemodynamics in a one-dimensional human carotid artery bifurcation. Part I: Application to stent design. IEEE Trans Biomed Eng. 2007 May; 54(5):802-12. PMID: 17518276.
    View in: PubMed
Vijaya's Networks
Click the "See All" links for more information and interactive visualizations!
Concepts
_
BU Co-Authors
_
Similar BU People
_
Same Department