Academic Qualifications:

• MD (Radiology)-GMC, Nagpur
• Specialized training in Neuroradiology, AIIMS-July 1991-1994, joining date:31/07/1991-23/12/1994
• Assistant Professor-Department of Neuroradiology, AIIMS-24/December 1994-June 30,1998
• Associate  Professor -Department of Neuroradiology, AIIMS-1^st July 1998-June 2002
• Additional Professor -Department of Neuroradiology, AIIMS-1^st July 2002-30^TH June 2008
• Professor -Department of Neuroradiology, AIIMS-1^st July 2008-till date
• Head of department of Neuroimaging & Interventional Neuroradiology -1^st March 2016 till date
• CCST certification(Clinical Radiology)-Specialist Training Authority, Medical Royal Colleges, London

Services started at AIIMS:

• Set up MRI services at AIIMS-September 1993. 1^st clinical case done on 1/12/1993
• Founder member of epilepsy surgery team at AIIMS-April 1995
• Setup program on MRA evaluation of non disabling stroke-April 1995. Study published in NMJ, May 1997 issue.
• Carotid stenting for steno-occlusive disease for primary prevention of strokes-September 2000. Hands on training by John Hopkins Uinversity
• Advanced reconstructive endovascular cerebral aneurysm treatment techniques with Stent Assisted Coiling for intracranial aneurysms (Solitaire, Enterprise etc). (“Y” stenting for basilar top aneurysm)-2008 onwards
• Covered stent (Graft master for pseudo aneurysm in petrous/cavernous ICA, CCF), and Vertebro-vertebral fistulas
• Liquid embolic Onyx embolization for AVMs and Dural AVFs-2008
• Most recent surface modified coil technology/stents (Micrus, 3D coils, Axium coils)-2008
• Intracranial PTA/Stenting for cerebral atherosclerosis-2010
• Intra-arterial thrombolysis/mechanical thrombectomy for acute ischaemic stroke
• Intracranial Venous stenting (Dural sinus stenting for stenotic lesions in raised ICT)
• Dilute glue injection for AVM embolization-2010 onwards (Trained at UMASS, Worcester, USA).

Served as:

• Organizing Secretary of Annual Conference of “Indian Society of Neuroradiology”-2005, Hyatt Regency.
• Vice president of Indian Society of Neuroradiology-2011-2012
• President of Indian Society of Neuroradiology:2012-2013  
• President ISNR : 2012-2013
• Hon. Secretary ISNR : 2009-2011
• Organizing Secretary of Annual Conference of “ISNR-2014, Oberoi, Gurgaon
• Org. Secretary for Annual conferences of ISNR: 2017 –2019, Delhi.
• Present-Vice President of Society of therapeutic Neurointervention

Research-Principle investigator:

• Imaging of intractable epilepsy
• Stroke management-Carotid Angioplasty and Stenting
• Acute ischaemic stroke-Endovascular management
• Assessment of Cerebral Hemodynamic Changes by Perfusion MRI in patients of carotid angioplasty and stenting. Radiology, November 25-30, 2007
• Intra-arterial thrombolysis in basilar artery occlusions; Combination of rTPA and Abciximab –published, Neurology India, June/July 2009 
• Spine and spinal cord craniovertebral junction abnormalities with vertebrobasilar ischaemia.

Research: Co guide

• Normobaric Oxygen Therapy In Acute Ischemic Stroke. A pilot study in Indian patients.
• Autologous Intra-arterial infusion of bone marrow mononuclear stromal cells (BMCs) in patients of non-progressive (Static) encephalopathy with special reference to cerebral palsy.
• Restoration of function using Autologous stem cells in Indian patients with chronic ischemic stroke–DST
• Project funded by DBT on Centre of excellence (COE): Centre for Difficult to Treat Epilepsy (Megnetoencephalography (M EG).
• AIIMS Cohort study-DBT funded, Rs 32 Cr.-Co investigator

Membership of Societies:

• Member of Indian Radiological and Imaging Association (IRIA)
• Member of Indian Epilepsy Society (IES)
• Member of Indian Society of Vascular and Interventional Radiology (ISVIR)
• Member of Indian Society of Neuroradiology (ISNR)
• Member of Delhi Neurological Association (DNA)
• Member of Indian Society of Paediatric Radiology(ISPR)
• Member of World Federation of  Interventional and Therapeutic Neuroradiology(WFITN)
• Member of Asia Pacific Society of Cardiovascular and Interventional Radiology (APSCVIR), South Korea,
• Member of Cardiovascular & Interventional radiological Society of Europe (CIRSE)
• Member of World Federation of Ischemic Stroke Team (WIST), Frankfurt, Germany  

Reviewer for following journal:

1. National Medical Journal
2. J. of Paediatric Neurosciences
3. Neurology India
4. Indian Journal of Radiology and Imaging
5. Journal of Neuroradiology
6. European Journal of Radiology
7. IAN  

Awards and recognition:

• Awarded WHO Fellowship in Neurointervention, 2001
• Hands-on-training workshop on GDC treatment of Intracranial aneurysms, held on 1-4 June 2000, Seoul National University Hospital, Seoul, South Korea, Program proctor Prof. In Sup Choi, Chairman, Department of Interventional Neuroradiology, MGH, Boston, USA.
• Hands-on-training on Carotid Angioplasty and Stenting, , Organized by Prof Kieren Murphy, Neuroradiology, John Hopkins University, Baltimore, USA, September 7-10, 2000.
• Course on “International Master Degree in Neurovascular diseases”, 2001, Course director - Prof P Lausjaunias, Bicetre, France, co-organized by Paris Sud University, and Mahidol University.
• Attended 12^th & 13^th Zurich workshop on interventional Neuroradiology, March 2004 & 2005. Course conducted by Prof. A Valavanis, Professor and Head of Neuroradiology department, Zurich University Hospital, Switzerland
• Visiting Fellowship for “Advanced training in neurointerventional techniques” at Hacetteppe University Hospital, Ankara, Turkey, May 2006. Course director-Prof Saruhan Cekirge, Isiil Satchi. This centre is the primary site for hands-on-training in Onyx embolization of AVMs and advanced neurointervention procedures including FLOW DIVERTERS.
• Visiting Professor-Department of Neuroradiology, South Carolina, Duke University, USA (December 2007).
• Attended “3rd Anatolian International Workshop on Interventional Neuroradiology”, 8-11th May, 2008 , Istanbul, Turkey
• Visiting Professor & Research Associate: BWH, Harvard Medical School, Boston, USA-31/1/2009-30^th June 2009
• Hands-on training on Flow diverters
• Hands-on training on: Penumbra and Merci devices, n-BCA Liquid Embolic System Advanced Training Course (for AVM embolization) at the University of Massachusetts Medical School, Worcester, MA, USA. Course director-Prof. Ajay Wakhloo –June 13, 2009
• Hands-on training workshop for advanced training in Perfexion Gamma knife for treatment of brain tumours and AVMs, 28^thNovember-2^nd December, 2011, at Cleveland Clinic, Ohio, USA
• Awarded Fellowship by National Academy of Medical Sciences-27/10/2017
• Member of expert group on “National Stroke Registry”: Expert group meeting on PBSR, HSBR, “To review PBSR & HSBR Training workshop for HSBR centers”, 12^th December, 2019 NCDIR, ICMR, Bangalore, Karnataka
• Expert of “Skill Development Initiative for Emerging World Countries”, Republic of Maldives, January 2020 onwards.
• Attended World Live Neurovascular Conference, held on 23-24 October 2020, Live Virtual Experience.
• Chief Coordinator for “Conducting Neuroradiology Workshop”, National Institute of Neurosciences & Hospital, Dhaka, Republic of Bangladesh.

Member of the following technical committees

• Worked as member of the committee to develop facility for Multidetector CT, Biplane DSA system, MRI, Neurointerventional consumables at AIIMS, New Delhi.
• Served as member on “Medical ethics committee” of AIIMS, New Delhi.
• Chairman of “AIIMS Gymkhana Committee”-June 2017 till date  
• Publications in peer reviewed journal: 126
• Book co-edited: 3
• Book Chapters : 26
• Citable abstracts : 80
• Citations : 1005
• Impact factor : 169
• Contribution in International New Book –Frank Netter series” (Dr. Larry Cochard)-Northwestern University, Chicago, Harvard Medical School, Duke University : Year-2011