IMPORTANT: From 01 November 2021 any study involving ionising radiation, which is taking place in NHS/HSC secondary care settings, can apply for Radiation Assurance.
Radiation Assurance is for studies where there are ionising radiation research exposures
which are taking place in the NHS/HSC.
Radiation Assurance is opening in stages and is currently accepting studies in cardiology, neurology, oncology, rheumatology and general radiology (in any clinical area). Other studies will be accepted at a later date. See the
HRA website for further details of the phased roll-out.
This page provides the following information:
Radiation Assurance is a process to assist you in securing the Clinical
Radiation Expert (CRE) and Medical Physics Expert (MPE) reviews in Part B
Section 3 of the IRAS form ready to submit it for the required regulatory
approvals. It is managed by the HRA on behalf of all four UK nations. It is
designed to deliver the following benefits:
Implementation of a Radiation Assurance consistency review prior to CRE and
MPE reviews, leading to greater consistency of information
regarding ionising radiation information in applications
Assisting you in finding CREs and MPEs with the appropriate
expertise to review your study
Greater clarity for CRE and MPE reviewers, who review through
Radiation Assurance, on which information should be presented in
Part B Section 3 of the IRAS form
Providing generic statements about the risk of the exposure of
ionising radiation to Research Ethics Committees (RECs) and the
Administration of Radioactive Substances Advisory Committee (ARSAC)
within the IRAS Form, and to participants in the
Participant Information Sheet (PIS)
Providing assurance to applicants, regulatory bodies and
participating sites that the information within the IRAS Form
contains the required information to the set Radiation Assurance
Reducing site set up times by reducing the number of queries raised
at site level, as a result of more consistent and accurate
Radiation Assurance has introduced a standardised review fee for some
studies. Further information is available on the
Payments Framework Guidance on the HRA website.
As Radiation Assurance progresses through a phased roll-out it will become
a pre-submission aspect of the IRAS Form.
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Radiation Assurance is a pre-submission process and occurs before your
application is made for other regulatory approvals such as REC and
If your study will involve ionising radiation exposures in the NHS/HSC and
in the areas of cardiology, neurology, oncology, rheumatology, or general radiology in any clinical area, please apply for Radiation
If you are also intending to submit your application through the Combined Ways of Working (CWoW) pilot, please read the guidance on this web page in conjunction with the CWoW-specific guidance on the HRA website before making your application to Radiation Assurance.
Other study types will be accepted at a later date. See the
for further details of the phased roll-out.
General radiology procedures are those which can be justified and authorised by any Clinical Radiation Expert (CRE). They can be used and/or requested in a variety of settings e.g. GP surgeries, A&E etc. General radiology does not include procedures which are more specialist in nature and require a CRE with particular expertise in that area.
General radiology covers:
Most plain film radiography (e.g. chest x-rays, hip x-rays)
CT head scans for common problems such as stroke, headaches or head injury
Low dose procedures (e.g. plain films and DEXA)
Safety tests (e.g. CT chest scan to preclude infection, post tumour image-guided biopsy)
General radiology does not include more specialist radiology exposures such as:
- Scans to check for the location and/or size of tumours
Please note that neither list is exhaustive. General radiology does not include any exposures to radioactive substances (nuclear medicine) or radiotherapy and any associated planning or on-treatment scans. For guidance on whether a radiology procedure can be considered general radiology please contact a CRE (if you have access to one) or firstname.lastname@example.org
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There are two review routes through Radiation Assurance – self-managed and
HRA-managed. Please see the
flowcharts on the HRA website
for an overview of what happens in each review process. Detailed guidance
on how to apply is available below.
A non-commercial study will only be accepted as self-managed if it meets the following
The sponsor (or co-sponsor) is the same as the reviewing
trust/health board; and
The CRE and MPE reviewers conducting the review are registered with
the HRA to conduct Radiation Assurance reviews and are employed by
the reviewing trust/health board.
A commercial study will only be accepted as self-managed if it meets the following criteria:
The CRE and MPE reviewers conducting the review are registered with the HRA to conduct Radiation Assurance reviews; and
The reviewers have already registered with the HRA to review through the self-managed route with the submitting applicant.
Further information on payment for self-managed
reviews is available in the
Payments Framework Guidance
on the HRA website.
In this process, the HRA will conduct a consistency review on the application, but you will manage the review process with the
reviewers yourself. It is your responsibility to ensure that CREs and MPEs
of the appropriate expertise are selected to conduct the review. You can
check whether a CRE or MPE is registered with the HRA by using our
Registered Reviewer List.
Any study which cannot be self-managed will be processed as HRA-managed as
long as the standard review fee is available to pay for the review. Further
information on payment is available in the
Payments Framework Guidance. Please note that different payment arrangements apply for any reviewers
used who are based in Scotland.
Under the HRA-managed process, the HRA will conduct a consistency review on the application and assign HRA-registered reviewers to review the
study. The HRA will also manage the review process with reviewers, liaising
with you when required. You can request up to three trusts or health boards and, if known,
reviewers at these organisations, to complete the review, though there may be
instances when this cannot be accommodated. In the event that this situation arises, the HRA will contact you to discuss further options.
Submissions for Radiation Assurance should be made before Part B
Section 3 of the IRAS Form has been completed and authorised.
Supporting documents can be in draft format as long as the references to
ionising radiation exposures will not be changed before the subsequent
submission to the REC and ARSAC (where required).
You should submit the following documents to the HRA Radiation Assurance
As Radiation Assurance occurs prior to regulatory approval submission, the
documents should be sent by email to
with the email subject “IRAS ID xxxxxx - New submission for Radiation
Assurance”. You should specify within the covering email whether you
would like your submission to be HRA-managed or self-managed.
Some HRA-registered reviewers are sole traders or registered as limited companies; they do not review for a Trust/Health Board or private company. If you are submitting through the HRA-managed route and do not want the HRA to assign a study to an independent reviewer please also specify this in your covering email.
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Make sure that you have identified and recorded all research exposures in the IRAS Form and the Research Exposure Form.
Sometimes protocols can be vague on requirements regarding radiation exposures, for example where it is stated that a scan will be conducted “if clinically indicated”. Even if the exposure is standard of care, it may still be considered a research exposure - make sure that you check the guidance in particular if you see wording like this in your protocol. Key things to consider include whether this is an additional exposure, whether the outcome of the exposure will affect participation in the trial, specified frequencies, and whether the results will be used to inform the planned outcomes.
Have a look at the Exemplar Research Exposure Form to see how
information should be recorded in the Research Exposure Form.
If there is any information requested in the Research Exposure Form which you cannot find in the study documents, it is recommended that you speak to the sponsor or chief investigator to find this information out before you submit. Examples of when you may need to do this include finding out the number of exposures which are likely to be standard of care, the radiopharmaceutical to be used for any nuclear medicine exposures, and whether biopsies or other procedures will be image-guided.
Ensure that the maximum number of exposures for all radiological procedures is stated in both the IRAS Form and the Research Exposure Form.
Make sure that all references to research exposures are consistent
throughout all study documents e.g. all necessary documents state
that a PET scan of the chest, abdomen and pelvis will be conducted
on a six-monthly basis for two years. Double check your application
before submitting it as this is a common finding in the consistency review
process and can lead to longer review timelines.
Read the HRA’s
Radiation Assurance Consistency Review Criteria, which sets out what the HRA will check the application against.
If available, please provide a copy of the imaging manual or radiotherapy protocol at submission as this will speed up the consistency review process. Please be aware that, should either of these documents be referenced in the protocol, the HRA will request them prior to review.
Whether your study is self-managed or HRA-managed, once it is submitted it
will go through the HRA’s Radiation Assurance consistency review. You can view the Radiation Assurance Consistency Review Criteria in the Tips for a successful application section.
The HRA aims to complete this consistency review within a maximum of 14 calendar
days of a submission being received, excluding any time it takes you to
respond to queries. The HRA needs this amount of time to fully check the
study against the HRA Radiation Assurance Consistency Review Criteria, and in particular to ensure that all
research exposures have been identified and are consistent throughout the
application – this makes it easier for the CREs and MPEs to do their
reviews and provides assurance to RECs and sites on the consistency of information.
When a consistency review has been conducted and completed for your application, you will receive an email from the
HRA confirming this and also that it has been registered for self-managed
review. You should send this email together with the documents checked in the consistency review to
the MPE and CRE reviewers who were listed in the Self-Managed Study
Registration Form so that they can complete the review in part 2 and part 3
of the research exposure form respectively. It is your responsibility to
liaise with the reviewers and ensure that the review is completed. There
are no timelines set by the HRA for this part of the process.
Once the review is completed, you should ensure that the full Research
Exposure Form is sent back to the HRA at
email@example.com. This is so that the HRA can confirm by email that Radiation Assurance has
been secured. Please note, Radiation Assurance will not be provided until the HRA is in receipt of the completed review.
When a consistency review has been conducted and completed for your application, you will receive an email from the HRA confirming this. The HRA will then assign CRE and MPE reviewers to the
study to conduct the review.
Where the HRA-Managed Study Reviewing Trust/Health Board Request Form is
not submitted, the HRA will choose the first available reviewers of the
appropriate specialisms from its list.
Where the HRA-Managed Study Reviewing Trust/Health Board Request Form is
submitted, the HRA will assign reviewers from the requested organisation(s)
wherever possible. If reviewers at the organisation(s) are not available,
you will have the option to wait for them to become available or the HRA
will choose the first available reviewers of the appropriate specialisms
from its list. If you wait for reviewers to become available you should be
aware that this will not count towards the HRA’s review timeline.
Please note that reviewers have the option to refuse to conduct a review
(e.g. because they are about to go on annual leave). Where this occurs the
HRA will then select the next available reviewer of the appropriate
specialism from its list.
The HRA will provide reviewers who accept the review with a copy of the
study documents and the research exposure form. If the reviewers have
any queries about the information in the application, the HRA will liaise
with you on their behalf to resolve the issue(s). The HRA will also give the
reviewers your contact details so that they can contact you directly to
begin payment arrangements whilst the review is ongoing.
Once the review is completed the HRA will send the completed Research
Exposure Form back to you and confirm by email that Radiation Assurance has
been secured. The HRA is currently aiming to send you this email within 40
calendar days of the initial submission being made, excluding the time it
takes for you to respond to any queries raised. Please note that this timeline includes the consistency review, assigning MPE and CRE reviewers, and the completion of the MPE and CRE reviews.
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The email confirming that Radiation Assurance has been secured will include
further information about what to do at this point, such as:
Copy the MPE and CRE reviews from the research exposure form into
IRAS Part B Section 3;
Make any changes the reviewers have requested to be made to the Participant Information Sheet;
Seek authorisations from the lead MPE and CRE;
Make payment to the reviewing trust(s)/health board(s). The Payments Framework Guidance recommends that payment is made within 30 days of Radiation Assurance being issued, in line with NHS standard payment terms;
Include this email in the submission to ARSAC (where required), and in the local information pack to participating sites.
If the research exposures change after Radiation Assurance has been secured
this may result in a change in the information in Part B Section 3. If this
is the case, the Radiation Assurance will not be valid. A change (pre-REC
favourable opinion) or substantial amendment (post-REC favourable opinion)
request should be submitted to Radiation Assurance prior to submission to
the appropriate regulatory bodies.
Further information on which changes to the research exposures would lead
to a new submission being made to Radiation Assurance can be found in the
Maintaining Your Approvals
section of the IRAS Help pages, together with guidance about how to submit.
We welcome all feedback on the Radiation Assurance process, including from
RECs and sites who have received an application which has been through
Radiation Assurance. Please contact us at firstname.lastname@example.org to provide feedback.
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Page last updated: 30 September 2021