3020 Children's Way
MC 5004
San Diego, CA 92123




Rady Children's Specialists of San Diego

Medical Group / IPA


Medical School

Emory University School of Medicine


Children's National Medical Center


Children's National Medical Center, National Institutes of Health

Board Certifications

Pediatric Cardiology, Pediatrics


Dr. Kanishka Ratnayaka is a board-certified pediatric cardiologist at Rady Children's Hospital-San Diego and an associate clinical professor of pediatrics at UC San Diego School of Medicine.

Dr. Ratnayaka earned his medical degree at Emory University School of Medicine before completing his residency and fellowship at Children's National Medical Center. His medical education includes sub-specialty training in pediatric/congenital interventional cardiac catheterization and interventional cardiac MRI and his clinical practice focuses on congenital and structural heart interventions. He has been invited to give numerous plenary talks on interventional cardiovascular MRI for organizations including the American College of Cardiology, American Heart Association and the Society for Cardiovascular Magnetic Research.

In addition to his clinical practice, Dr. Ratnayaka worked in research collaboration with the National Heart, Lung, and Blood Institute and the National Institutes of Health on interventional cardiovascular MRI for 10 years. He became the principal investigator for an interventional cardiovascular MRI research program, successfully performing clinical trials of radiation-free cardiac catheterization guided by real-time MRI and X-Ray fused with MRI. He has authored over 35 peer-reviewed manuscripts on key topics in his field such as X-ray fused with MRI, MRI-guided heart catheterization, MRI-guided intervention and MRI device innovation. Dr. Ratnayaka's other research work includes device development for novel applications, bioabsorbable stents for pediatric use and transcatheter electrosurgery. He holds several patents and has won many awards for his original research.

Dr. Ratnayaka is a founding member and vice president of World Children's Initiative, a 501(c)(3) charitable organization geared toward implementing innovative healthcare and education projects for children around the world. Its current focus is Project Heart: Uganda, an initiative to build a sustainable cardiac catheterization program to diagnose and treat children with heart disease at Mulago Hospital in Kampala, Uganda.


Bronchus compression relieved by patent ductus arteriosus stenting.
Zayed WM, Bhandari K, Guyon PW Jr, El-Sabrout H, Ryan J, Ratnayaka K, El-Sabrout A, Moore JW, El-Said H

Aortic Root Thrombosis on ECMO-A Novel Management Strategy.
Aljohani OA, Singh RK, Nageotte SJ, Do T, Ratnayaka K, Nigro JJ, Werho DK

Transcatheter Electrosurgery: JACC State-of-the-Art Review.
Khan JM, Rogers T, Greenbaum AB, Babaliaros VC, Yildirim DK, Bruce CG, Herzka DA, Schenke WH, Ratnayaka K, Lederman RJ

MRI Catheterization: Ready for Broad Adoption.
Nageotte SJ, Lederman RJ, Ratnayaka K

Transcatheter Electrosurgery Rescue: Jailed Pulmonary Artery Following Melody Pulmonary Valve Replacement.
Nageotte SJ, Lee JW, El-Said HG, Moore JW, Ratnayaka K

Hepatic Vein Incorporation Into the Azygos System in Heterotaxy and Interrupted Inferior Vena Cava.
Montesa C, Karamlou T, Ratnayaka K, Pophal SG, Ryan J, Nigro JJ

Stenting the vertical neonatal ductus arteriosus via the percutaneous axillary approach.
Lee J, Ratnayaka K, Moore J, El-Said H

X-ray fused with MRI guidance of pre-selected transcatheter congenital heart disease interventions.
Grant EK, Kanter JP, Olivieri LJ, Cross RR, Campbell-Washburn A, Faranesh AZ, Cronin I, Hamann KS, O'Byrne ML, Slack MC, Lederman RJ, Ratnayaka K

Pulmonary artery interventions after the arterial switch operation: Unique and significant risks.
Lee J, Abdullah Shahbah D, El-Said H, Rios R, Ratnayaka K, Moore J

A review: Percutaneous pulmonary artery stenosis therapy: state-of-the-art and look to the future.
Patel AB, Ratnayaka K, Bergersen L

Endograft rescue of compromised interposition aortic graft in an adult patient with congenital heart disease.
Lee JW, Ratnayaka K, El-Said HG, Moore JW

Physiological Recording in the MRI Environment (PRiME): MRI-Compatible Hemodynamic Recording System.
Kakareka JW, Faranesh AZ, Pursley RH, Campbell-Washburn A, Herzka DA, Rogers T, Kanter J, Ratnayaka K, Lederman RJ, Pohida TJ

Radiation-free CMR diagnostic heart catheterization in children.
Ratnayaka K, Kanter JP, Faranesh AZ, Grant EK, Olivieri LJ, Cross RR, Cronin IF, Hamann KS, Campbell-Washburn AE, O'Brien KJ, Rogers T, Hansen MS, Lederman RJ

First-in-Human Closed-Chest Transcatheter Superior Cavopulmonary Anastomosis.
Ratnayaka K, Moore JW, Rios R, Lederman RJ, Hegde SR, El-Said HG

CMR fluoroscopy right heart catheterization for cardiac output and pulmonary vascular resistance: results in 102 patients.
Rogers T, Ratnayaka K, Khan JM, Stine A, Schenke WH, Grant LP, Mazal JR, Grant EK, Campbell-Washburn A, Hansen MS, Ramasawmy R, Herzka DA, Xue H, Kellman P, Faranesh AZ, Lederman RJ

An MR-Based Model for Cardio-Respiratory Motion Compensation of Overlays in X-Ray Fluoroscopy.
Fischer P, Faranesh A, Pohl T, Maier A, Rogers T, Ratnayaka K, Lederman R, Hornegger J

Pump in Parallel-Mechanical Assistance of Partial Cavopulmonary Circulation Using a Conventional Ventricular Assist Device.
Sinha P, Deutsch N, Ratnayaka K, He D, Peer M, Kurkluoglu M, Nuszkowski M, Montague E, Mikesell G, Zurakowski D, Jonas R

Acute Cardiac MRI Assessment of Radiofrequency Ablation Lesions for Pediatric Ventricular Arrhythmia: Feasibility and Clinical Correlation.
Grant EK, Berul CI, Cross RR, Moak JP, Hamann KS, Sumihara K, Cronin I, O'Brien KJ, Ratnayaka K, Hansen MS, Kellman P, Olivieri LJ

Real-time magnetic resonance imaging guidance improves the diagnostic yield of endomyocardial biopsy.
Rogers T, Ratnayaka K, Karmarkar P, Campbell-Washburn AE, Schenke WH, Mazal JR, Kocaturk O, Faranesh AZ, Lederman RJ

Magnetic Resonance Imaging-Guided Transcatheter Cavopulmonary Shunt.
Ratnayaka K, Rogers T, Schenke WH, Mazal JR, Chen MY, Sonmez M, Hansen MS, Kocaturk O, Faranesh AZ, Lederman RJ

Transcatheter Myocardial Needle Chemoablation During Real-Time Magnetic Resonance Imaging: A New Approach to Ablation Therapy for Rhythm Disorders.
Rogers T, Mahapatra S, Kim S, Eckhaus MA, Schenke WH, Mazal JR, Campbell-Washburn A, Sonmez M, Faranesh AZ, Ratnayaka K, Lederman RJ

Interventional-Cardiovascular MR: Role of the Interventional MR Technologist.
Mazal JR, Rogers T, Schenke WH, Faranesh AZ, Hansen M, O'Brien K, Ratnayaka K, Lederman RJ

Segmented nitinol guidewires with stiffness-matched connectors for cardiovascular magnetic resonance catheterization: preserved mechanical performance and freedom from heating.
Basar B, Rogers T, Ratnayaka K, Campbell-Washburn AE, Mazal JR, Schenke WH, Sonmez M, Faranesh AZ, Lederman RJ, Kocaturk O

Characterizing the angiogenic activity of patients with single ventricle physiology and aortopulmonary collateral vessels.
Sandeep N, Uchida Y, Ratnayaka K, McCarter R, Hanumanthaiah S, Bangoura A, Zhao Z, Oliver-Danna J, Leatherbury L, Kanter J, Mukouyama YS

Image Fusion Guided Device Closure of Left Ventricle to Right Atrium Shunt.
Grant EK, Faranesh AZ, Cross RR, Olivieri LJ, Hamann KS, O'Brien KJ, Hansen MS, Donofrio MT, Lederman RJ, Ratnayaka K, Slack MC

See the full listing of this physician's publications on PubMed, a service of the National Library of Medicine.

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