A RAPID Checklist: Understanding Pitfalls and Artifacts in Stroke
Description & Learning Objectives
Ischemic stroke is a leading cause of morbidity and mortality worldwide. In the acute setting, neuroimaging plays a critical role in determining management and outcome. Noncontrast head CT is initially used to identify hemorrhage and large areas of ischemia that preclude thrombolysis and thrombectomy. In patients who present between 6 and 24 hours after last known well, CTA and CTP are useful tools to select those who may benefit from mechanical thrombectomy. The utility of CTP lies in its ability to identify irreversibly infarcted tissue (core infarct) and distinguish it from potentially salvageable tissue (penumbra). Radiologists and clinicians need to understand this imaging technique and its major pitfalls to avoid interpretation mistakes.
Upon completion of this activity, participants will gain strategies to describe the basic principles of CTP acquisition, propose a short and practical checklist for interpreting automated CTP scans obtained with a commercially available and widely used program, and review its main pitfalls and artifacts.
Upon completion of this activity, participants will gain strategies to describe the basic principles of CTP acquisition, propose a short and practical checklist for interpreting automated CTP scans obtained with a commercially available and widely used program, and review its main pitfalls and artifacts.
Instructions for Participation
To complete this activity, learners will read an article and submit a course evaluation. Once all elements are completed, a certificate will be automatically added to your transcript.
Credit Dates
Available: 5/11/2023
Expires: 5/10/2026
Expires: 5/10/2026
Planners & Faculty
ASNR would like to thank the following individuals for reviewing this article.
Joshua Nickerson, Editor in Chief
Robert Quencer, Consulting Editor
Toshio Moritani, Associate Editor
Meng Law, Associate Editor
Edward Escott, Associate Editor
Levi Chazen, Associate Editor
Scott Faro, Associate Editor
Susan Palasis, Associate Editor
Katyucia de Macedo Rodriguez, Associate Editor
Joshua Nickerson, Editor in Chief
Robert Quencer, Consulting Editor
Toshio Moritani, Associate Editor
Meng Law, Associate Editor
Edward Escott, Associate Editor
Levi Chazen, Associate Editor
Scott Faro, Associate Editor
Susan Palasis, Associate Editor
Katyucia de Macedo Rodriguez, Associate Editor
Accreditation Statement
The American Society of Neuroradiology is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians.
The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credits™. Physicians should claim only the credit commensurate with the extent of their participation in the activity.
Disclosure
In compliance with ACCME requirements and guidelines, ASNR has developed a policy for disclosure and review of potential conflicts of interest and a method for resolution if a conflict does exist. ASNR maintains a tradition of scientific integrity and objectivity in its educational activities. In order to preserve these values and ensure its educational activities are independent and free of commercial bias, all individuals, including planners, presenters, moderators and evaluators, participating in an ASNR educational activity, or an activity jointly provided by ASNR must disclose all relevant financial relationships with ineligible companies, as defined by the ACCME. Unless listed below, all planners and individuals in control of content have nothing to disclose.
C. Zamora: Royalties or licenses: Elsevier, Thieme.
All other authors have no disclosures.
Meng Law: Stockholder, Clinical Imaging
Edward Escott: Grant, Atherysys, Inc.; Royalties, Thieme Medical Publishers
Levi Chazen: Grant, Athersys; Stock Ownership or Private Investments: Amgen, Catalent, Charles River Labs, Intuitive Surgical, Stryker, United Health Group
Scott Faro: Royalties, Springer Publications
C. Zamora: Royalties or licenses: Elsevier, Thieme.
All other authors have no disclosures.
Meng Law: Stockholder, Clinical Imaging
Edward Escott: Grant, Atherysys, Inc.; Royalties, Thieme Medical Publishers
Levi Chazen: Grant, Athersys; Stock Ownership or Private Investments: Amgen, Catalent, Charles River Labs, Intuitive Surgical, Stryker, United Health Group
Scott Faro: Royalties, Springer Publications
