Have questions about the 2023 ASTRO Annual Meeting? Below you can find answers to general questions about the meeting, programming, presenting and the Virtual Meeting. If you have additional questions, please contact ASTRO's meetings team.

General FAQs

Can I pick up badges for other people?

No, attendees must pick up their own badge and registration materials.

For exhibitors, the designated badge contact is the only person authorized to pick up another person's badge for the exhibiting company. Learn more about exhibitor registration and policies/procedures.

Will shuttle buses be available?

Yes. Shuttle buses will be available from select ASTRO official hotels that are not within walking distance. The shuttle bus service will begin on Saturday, September 30, and run until Wednesday, October 4. Find more details on our transportation page.

Where can I find help at the Convention Center?

If you have questions while you are in San Diego, visit the ASTRO Resource Center located in the Hall D Lobby of the San Diego Convention Center.

How do I access the Annual Meeting Portal or App?

The Annual Meeting Portal is available at

  1. The Annual Meeting Portal allows you to view the Daily Schedule, browse Exhibitors, view abstracts and more.
  2. Depending on the registration package you choose you may also view livestreamed sessions and access the Meeting onDemand.


The official meeting app, MyASTROApp, is available for download from the iTunes and Google Play stores!

MyASTROApp provides you with access to the meeting program and allows you to customize your meeting experience.

Also, be sure to opt in to receive messages from the app. We utilize app notifications to keep attendees updated on the program and other important meeting messages.

Program FAQs

What types of CME are offered?

ASTRO offers multiple types of credits for the Annual Meeting:

  • AMA PRA Category 1 Credits™ will be available for in-person, virtual and onDemand sessions.
  • Commission on Accreditation of Medical Physics Education Programs (CAMPEP) for Medical Physics Continuing Education Credits (MPCEC) will be available for in-person and virtual meeting sessions. CAMPEP credits are not available for onDemand sessions.
  • An application has been submitted to the Medical Dosimetrist Certification Board for MDCB credit for the live, in-person meeting. MDCB credits are not available for virtual meeting or onDemand sessions.

The most up-to-date information can be found on the Continuing Education Credits page.

How do I claim my credits?
  • Go to the MyASTROApp
    • The official meeting app, MyASTROApp, is now available for download from the iTunes and Google Play stores. Simply search for “MyASTROApp” in your app store!
  • Log in with your credentials (the email and password you used to register for the meeting).
  • Using the Daily Schedule, navigate to the day and time of the session and click the "Evaluation" icon at the bottom of the screen. You can also click on the "Claim Credits/Take Experience Survey" tile on the App home to get to the main page of the Evaluation portal.
  • The first time you go to claim credit, you will be asked to complete your profile.
  • Click on "Credit Selection." (There may be multiple Credit Selection options depending on your registration.)
  • Complete the session evaluation and click "Submit." (All required session evaluation questions must be completed for it be complete.)
  • The session will now appear in the Selected Sessions section. Once you have completed at least one session evaluation and clicked the Submit button at the top of the task page, you can Print Certificate, and Email Certificate.
  • If you need assistance, please email or call 703-502-1550, press or say option 7.

For the general meeting evaluation, a link will be sent to you at the email address you used to register for the meeting. Please be sure to complete both the session evaluation(s) and the general meeting evaluation.

CME credits must be claimed by June 1, 2024. MDCB and CAMPEP credits must be claimed by November 3, 2023.

How can I view Posters?

Posters can be viewed during the Poster Hall hours at the Poster Kiosks located in the Exhibit Hall B2 at the San Diego Convention Center. Posters are also available through the Annual Meeting Portal, MyASTROApp and in the Virtual Poster Library once the embargo is lifted at 5:00 p.m. Eastern time on Friday, September 29, 2023.

How do I interact with poster presenters?

During the Poster Q&A Sessions, poster presenters will have five minutes for individual presentation and Q&A, followed by an open Q&A for all presenters. Attendees are encouraged to view and listen to narrated posters prior to attending in-person Poster Q&A sessions and come to sessions with prepared questions for presenters. When viewing posters online (through the Annual Meeting Portal, MyASTROApp or in the Virtual Poster Library), attendees can also download posters and send messages to poster authors.

When will the embargo lift on abstracts/posters?

The embargo for the abstracts and posters will be lifted at 5:00 p.m. Eastern time on Friday, September 29, 2023.

How will I be notified of last minute session changes and cancellations?

Last minute session change and cancellation notifications will be sent out to attendees through the MyASTROApp. Be sure to download the app prior to arriving at the convention center. Learn more about the MyASTROApp on our Attendee Tools page.

Presenter FAQs

I am a poster presenter and can’t attend the meeting, can I still present my poster?

We can accommodate a presenter if they register for the virtual meeting and attend in that capacity due to travel constraints. Poster presenters participating virtually are strongly encouraged to record a narration of their poster and plan to respond to questions virtually.

I am an oral abstract or quick pitch presenter and am unable to attend the meeting, can I still present?

No, unfortunately, we are unable to support virtual presenters. If you are an abstract presenter and are unable to attend, please contact the Annual Meeting team and let us know as soon as you can.

I am a faculty member, and can no longer attend the meeting, who should I contact?

If you are a faculty member who can no longer attend the Annual Meeting, contact the Annual Meeting team as soon as possible. Depending on your role, we will provide you with the information you need to proceed.

I have additional questions about my presentation. Who can I contact?

Important information about building your presentation and important deadlines can be found on the ASTRO website for speakers. If you have additional questions, please contact the Annual Meeting team.

Virtual Meeting and Meeting onDemand FAQs

Is there a virtual component to the Annual Meeting?

Yes, a variety of registration options are offered so that you can attend the Annual Meeting “Your Way.” The Virtual Full Conference registration package includes:

  • Real-time access to the education and scientific sessions streamed live from the Annual Meeting
  • Access to the PRO Program
  • Continuing medical education (CME) credits
  • onDemand access to session content
  • Access to the Annual Meeting poster library

To learn more about other registration packages including In-person, PRO Weekend and One Day options, view our 2023 ASTRO Annual Meeting registration packages.

What is the difference between the Virtual Meeting and the Meeting onDemand?

The Virtual Meeting provides access to most meeting sessions* which will be livestreamed in real time September 30 ‒ October 4, 2023.

The Annual Meeting onDemand offers registrants the opportunity to view recorded sessions and claim corresponding CME credits after the live meeting takes place. Both In-person Full Conference and Virtual Full Conference registration include onDemand access with CME credit claiming for most meeting sessions* until June 1, 2024.

*Exceptions include some Master Classes, breakfast/luncheon/reception events and Poster Q&A.

How do I register for the Meeting onDemand?

If you are registered for either the In-person Full Conference or the Virtual Full Conference, no additional registration is required. Both registrations include onDemand access with CME credit claiming until June 1, 2024. 

The Annual Meeting onDemand will be available for purchase to non-registrants October 5 ‒ December 31, 2023, in the ASTRO Academy.

What is my login for the Virtual Meeting?

Your login is your ASTRO credentials, the email and password you used to register for the meeting. If you do not remember your ASTRO password, click the Forgot password? link at the login prompt.

How do I access the Virtual Meeting and join a session livestream?

You will be able to access the Virtual Meeting livestream via the online Annual Meeting Portal or MYASTROApp, from the beginning of the meeting, Saturday, September 30 at 7:55 a.m. Pacific time through the end of the live meeting, October 4, 2023, at 1:45 p.m. Pacific time.

To view a session:

  • Click the Daily Schedule in the lefthand menu.
  • Click the session you would like to view.
  • Click the View Livestream button.
  • Use the Social Q&A link to ask questions or participate in polls.
How do I access the Meeting onDemand?

The meeting onDemand is available in the Annual Meeting Portal, the same platform as the Virtual Meeting. Follow the same steps for accessing the Virtual Meeting.

The onDemand recordings will be available approximately 24 hours after the end of each session and can be accessed through June 1, 2024.

How do I view posters virtually?

Posters can be viewed through the Annual Meeting Portal and MyASTROApp, and in the Virtual Poster Library once the poster embargo lifts at 5:00 pm Pacific time on Friday, September 29.

To view posters in the Virtual Poster Library, you will be asked to create an account. The library is not tied to your account. If you created a login for past ASTRO meetings, you can use that login information again.

ASTRO has asked every poster author to narrate their poster. This will allow participants to hear poster authors describe their work, regardless of whether they are participating in the virtual or the in-person program. When you click on each section of the poster, the audio narration for that section will begin to play. The Virtual Poster Library also includes a Discussion Forum for each poster, and gives meeting attendees the ability to send messages to poster authors. If you have any questions for poster authors, be sure to use these features.

What setup is recommended for the Virtual Meeting?

No additional software is needed to participate.

  • Browser: Google Chrome (recommended), Mozilla Firefox or Apple Safari
  • Internet: Use a strong internet connection, 5 Mbps minimum but 15+ Mbps recommended, to avoid buffering or slowdowns.
  • Audio: Use headphones or a separate speaker for the best audio quality and experience.
  • Please see more under System Requirements.
If I encounter technical difficulty, what steps should I take?
  • Go to to see if the system check is successful.
  • Use Chrome (recommended), Firefox or Safari browsers.
  • Disconnect from a VPN (Virtual Private Network).
  • Check firewalls. If you are at a work institution, try another network like a mobile device or home network (some institutions have robust firewalls that will block some virtual features).
  • Clear your web browser history and cache or try another browser.
  • Check your internet connection. A minimum of 5 Mpbs is required, but 15 Mpbs is recommended. You can check this at
  • Close any other windows/tabs that may be using a lot of bandwidth.
  • If you are at home, make sure you are not also using streaming services like Netflix, etc., that could impact your available bandwidth.
  • Use a hard-wired internet connection, if possible.
  • If you have to use WIFI, make sure you are close to the WIFI device.
  • If the steps above don’t resolve the issue, please email the ASTRO eLearning team.
What are the recommended system requirements for the best experience?
  • Device:
    • You can watch sessions from a mobile device, laptop or desktop.
    • Most phones/computers purchased within the past few years will exceed the minimum requirements stated below.
  • Operating System:
    • Mac: Mac OSX 10.7 or later
    • Windows: Windows 10, 8, 8.1, 7, Vista (SP1 or later), XP (SP3 or later)
    • Ubuntu: 12.04 or later
    • Linux: Red Hat Enterprise Linux 6.4 or higher
  • Processor/RAM:
    • Single Core 1Ghz or higher (Dual core 2Ghz or higher, 4G RAM recommended)
  • Web Browser:
    • Windows: Chrome 72+ (recommended) or Firefox 27+
    • Mac: Chrome 30+, Safari 7+ or Firefox 27+
    • Linux: Chrome 30+, Firefox 27+
  • Internet Connection:
    • 5 Mbps minimum (15+ Mbps recommended). Note: wireless speeds are lower than your internet service provider's advertised speeds. You can use to test your speeds on your computer.
  • Hardware (recommended but not required)
    • The speakers that come built in to most computers are adequate, but headphones will create a richer, cleaner sound.

American Society for Radiation Oncology
251 18th Street South, 8th Floor
Arlington, VA 22202
Telephone: 703-502-1550


Connect With Us: