Catheter Lysis of Thromboembolic Stroke (CLOTS)

Educational Program

The most up-to-date CLOTS program is now online.

Click HERE to view the CLOTS brochure online.

Online Registration

To register for the CLOTS meeting, click HERE. To ensure that you receive the appropriate registration rate, have your SIR login and password handy.

Registration for the Interventional Track includes all didactic sessions, hands-on workshops and final course assessment. Registration for the Non-Interventional Track includes all didactic sessions, the CT Perfusion and Neurology Basics workshops. The Vascular Model workshops, practical and written exam are not included in this track.Please note, due to the focused nature of this course space is extremely limited. As such, registration will not be allowed for any previous attendees of the CLOTS course until AFTER the early rate deadline of September 24, 2012.

The CLOTS Training Course for Acute Stroke Treatment

This comprehensive five-day training course is composed of in-depth multidisciplinary lectures emphasizing the entire spectrum of stroke diagnosis and management. Topics include stroke pathophysiology, clinical neurological evaluation and the NIHSS, neurocritical care, multimodal neuroimaging, techniques of catheter-directed stroke care, patientspecific decision-making, multidisciplinary panel discussions, and numerous case scenarios. By forming a unique multidisciplinary faculty with experts from the fields of NeuroIntervention, Vascular Neurology, Neurocritical Care, Catheter Intervention, and NeuroImaging, CLOTS is the most comprehensive stroke training course available worldwide.

The intent of CLOTS is to improve stroke treatment in all aspects of care. Both the interventional and on interventional tracks have proved useful for even the most well-trained specialists including experienced
fellowship-trained neurointerventionists, interventional radiologists, and vascular neurologists. Fellows, including both vascular neurology and catheter interventionists, have received particular benefit from this course and are encouraged to attend.

Hands-on interaction with anatomically correct human-sized vascular flow models using actual stroke devices (Penumbra, Concentric, etc.) is available. The interventional track is intended for physicians with ACGME training and experience in the fundamentals of neuroimaging, catheter-directed cerebral angiography and sub-selective peripheral or neuroendovascular catheter-directed therapy who seek to incorporate acute ischemic stroke care into their practice and/or upgrade their knowledge and skill-base.

The non-interventional track provides a unique perspective on the complex and patient-specific decision making associated with all aspects of stroke care, including an emphasis on decision-making for endovascular stroke therapy. Experienced vascular neurologists, as well as vascular neurology fellows in training, have found CLOTS to be the most comprehensive stroke-training course available. CLOTS will also be useful for nurses, administrators and stroke coordinators who desire to increase their knowledge concerning the fundamentals of stroke and emergency stroke therapy, and the complex issues involved in creating a stroke center of excellence.

Sample Lectures Include:

  • Imaging Triage of Stroke: Techniques in CTA/CT Perfusion.
  • Imaging Triage of Stroke: Techniques in MRA/MR Perfusion
  • Cerebral Angiography in Ischemia: Collaterals and Their Implications.
  • Angiographic Patterns of Ischemia.
  • Overview of Evidence for Intra-arterial Pharmacomechanical Therapy: MERCI
  • Overview of Evidence for Intra-arterial Pharmacomechanical Therapy: Penumbra.
  • Upcoming Endovascular Stroke Trials and New Devices
  • Drugs Used in Interventional Procedures
  • Intra-arterial Thrombolytic Therapy - How I Do It (Case-based)
  • Intra-arterial Pharmacomechanical Therapy - How I Do It (Case-based)
  • How Does "Time of Onset" Enter Into Treatment Decisions? The Evidence
  • Should General Anesthesia Be Used for IA Stroke Therapy?
  • Potential Complications: Complications, Technical Pitfalls and Errors to Avoid
  • Selection of Revascularization Techniques
  • Patient Selection for IA therapy - Risk/Benefit Evaluation
  • Who not to Treat and Which Essential Variables to Consider
  • Medico-legal Implications of Acute Stroke Care
  • Tracking Outcomes

Educational Objectives

On completion of this course, an attendee should be able to
  • Describe recent developments in the area of acute stroke therapy and interventions
  • Describe pros and cons of intravenous (IV) tPA vs. IA intervention for treatment of particular stroke subtypes
  • Discuss the pathophysiology of stroke
  • Perform a basic clinical neurological examination, including the National Institutes of Health Stroke Scale (NIHSS)
  • Summarize the findings of major clinical trials in acute ischemic stroke
  • Discuss essential elements of multidisciplinary stroke team development
  • Analyze imaging modalities used in the evaluation of acute ischemic stroke
  • Select patients appropriate for acute ischemic stroke revascularization, either IV or IA
  • Describe intra-arterial techniques for treatment of acute ischemic stroke
  • Demonstrate angiographic table set-up and management
  • Demonstrate knowledge of guiding catheters, microcatheters, infusion systems, technical ability and revascularization techniques
  • Discuss recent key considerations in neurointensive care of stroke patients.
  • Recognize the absolute necessity of tracking clinical and procedural outcomes of stroke treatment

Accreditation Information

The Society of Interventional Radiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide medical education for physicians. SIR designates this live activity for a maximum of 25 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
This continuing nursing education activity was approved by the American Association of Neuroscience Nurses (AANN), accredited as an approver of continuing nursing education by the American Nurses Credentialing Center's COA. The American Association of Neuroscience Nurses is accredited as an approver of continuing nursing education by the American Nurses Credentialing Center's Commission on Accreditation. The AANN has approved this meeting for up to 25 CE credits for nurses.
This activity is approved for up to 29.25 credits by the ASRT.

Program Coordinators

John W. Cole, MD, MS
Vascular Neurology
University of Maryland School of
Medicine and Veterans Affairs
Medical Center
Baltimore, Md.

J.J. "Buddy" Connors, MD, FSIR
Interventional Neuroradiology
Vanderbilt University Hospital
Nashville, Tenn.

Vance Edmond McCollom, MD
Interventional Radiology
Mercy Hospital Oklahoma City
Oklahoma City, Okla.

David Sacks, MD, FSIR
Interventional Radiology
The Reading Hospital and
Medical Center
West Reading, Pa.

Steering Committee Members

Carl M. Black, MD

Jeffrey S. Carpenter, MD
Interventional Neuroradiology

Romergryko G. Geocadin, MD
Neurocritical Care Medicine

Howard A. Rowley, MD

M.J. "Bernie" Stallmeyer, MD, PhD
Interventional Neuroradiology

Joan C. Wojak, MD, FSIR
Interventional Neuroradiology

Endorsing Societies

Hotel Information

For hotel reservations, please call the Grand Hyatt Dallas Fort Worth (DFW), located at Terminal D at the DFW International Airport at 888.421.1442. A limited number of specially rated rooms have been reserved for this program. Rates are $185 single/double occupancy per night plus applicable taxes. The cut-off date for rooms is Monday, September 24, 2012. Rooms for this program fill early, do not delay in making your arrangements.

Click HERE to make your reservations directly with the hotel.

Exam Information

Exam information to come.

Online Cases

Online cases information to come.

Cancellation Policy

Due to high demand and the limited number of possible attendees for this course, SIR must adhere to a strict registration cancellation policy. Cancellations received in writing by September 24, 2012, will be refunded less a $100 administrative fee. No refunds will be given after September 24, 2012. Refunds or credits will not be given for failure to attend, late arrival, unattended events or early departure. Hotel reservations, cancellations and/or changes must be made directly with the hotel. All refunds must be submitted in writing to:

Society of Interventional Radiology
Attention: Education Department
3975 Fair Ridge Drive, Suite 400 North
Fairfax, VA 22033
Fax: (703) 691-1855


National Stroke Intervention Training Center
Society of Interventional Radiology Resources Cover Stroke, Carotid Artery Disease


Benefactor Level:

Supporter Level:

GE Healthcare
Siemens Medical Solutions USA, Inc.

SIR Policies

SIR Participation Policy

Society of Interventional Radiology staff, members, nonmembers and event participants must be treated with respect in all interactions (including but not limited to in-person, telephone or via written communications). All agree to conduct themselves in a manner appropriate for health care professionals. Staff offices and the press room at meeting sites are reserved for official business only; food and beverage service in these areas are reserved for staff and volunteer members. If a staff member believes that these rules have been violated or acceptable social decorum has otherwise been breached, the staff member shall contact one of the designated individuals in the volunteer leadership to help with the situation. If the member in question believes that he/she has been wrongly accused of inappropriate behavior, he/she shall also contact the designated physician leadership to help with the situation.

SIR Photo Disclaimer

Registration and attendance at, or participation in, the Society of Interventional Radiology's meetings and other activities constitute an agreement by the registrant/attendee to SIR's use and distribution (both now and in the future) of the registrant's or attendee's image or voice in photographs, videotapes, electronic reproductions and audio tapes ("images/recordings") of such events and activities. Registrant/attendee acknowledges and agrees that SIR's use or distribution of such images/recordings may be worldwide and in any medium; that SIR may identify registrants or attendees in such images or recordings; and that registrants/attendees have no right to any compensation for such uses.