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Nuclear Medicine & Molecular Imaging Advisory Group

The NMMAG consists of a panel of carefully chosen experts who advise the organisation on the development of suitable policies and strategies to support nuclear medicine practice. In addition the NMMAG undertakes a range of projects to facilitate the implementation of such policies.

Chairs Message 2018

We are at a pivotal point in medical imaging in 2018; demand for imaging services continues with significant growth, technology continues to develop at a rapid rate, and with that the expectation of utilising technology to its full potential.  In addition, there are of course the new legislative changes, which have taken effect alongside the challenge of the complex needs of the Nuclear Medicine Imaging workforce.

The NMMAG group continue to support Radiographers Technologists and other associated professionals by reviewing current legislation and guidance, helping to address our developing imaging landscape. To say the least it is a busy year ahead and our mission is to support you all on that journey. Please don’t hesitate to pose your questions to our group, by selecting one of the members below and emailing your query.

Warm Regards,

Angela Meadows

Chair for the Nuclear Medicine Advisory Group.

Sue Johnson is the SCoR Officer responsible for this group.

NMMAG Members

Rayjanah Allie

Tristan Barnden

Nicholas Gulliver (BNMS Observer)

Sai Han

Frances Hogg (IPEM Observer)

David Jones

Clare Moody

Sarah Stace

Dr John Thompson

Joanne Weekes

David Williams

Chair – Angela Meadows

Vice Chair – Dr Penny Delf

Council Member – Vas Nevrides

Professional Officers - Rachel Harris and Sue Johnson


David Wyn Jones MSc DCR(R) DRI CRadP MSRP 

David currently leads the Nuclear Medicine service in North Wales for the Betsi Cadwaladr University Health Board. As Principal Radiographer, he is responsible for leading and developing nuclear medicine services for the region, and has responsibility for services at three acute sites, as well as the provision of PET/CT imaging for the region

After qualifying as a radiographer at the Shropshire School of Radiography in 1989, David worked in general radiography before specialising in Nuclear Medicine, undertaking the DRI at the Birmingham School of Radiography (led by Ken Holmes and Dr Keith Harding) in 1992, and later undertaking an MSc in Nuclear Medicine at Salford University with Professor Peter Hogg.

David has experience of CT and MRI also, having worked in acute and specialist hospitals, and some previous experience of University teaching, as part time lecturer at City University, London, and as a visiting lecturer and examiner for Bangor University. Former honorary posts also include Honorary Research Fellow, and Honorary Lecturer at Salford.

David is a former ARSAC committee member, having served for over 8 years, giving a radiographic perspective to the work of the committee, advising Government.

As well as contributing to the Nuclear Medicine chapters in both editions of the textbook ‘Carver & Carver - Medical Imaging’, David has published a textbook entitled ‘Practical SPECT/CT’, with Springer, bringing together international experts for the benefit of nuclear medicine practice.

David is currently completing a Professional Doctorate at Bangor University – specialising in ‘Implementation Science’ – gaining expertise and knowledge by researching into ‘why evidence does not always find its way into clinical practice’.

As well as the above, some time is also found to assist the CQC as a specialist adviser for Radiology / Nuclear medicine, undertaking regular inspection work and advising as appropriate.

David has recently served as Chair of NMMAG at the SCoR for 4 years and continues to be an active advisory group member.

Key Interests: Service Development / Professional Development / Radiation Protection / Regulation / Clinical Nuclear Medicine and Research.


Dr Penny Delf D.MedImg MSc PgC(RNI) BSc(Hons) DCR(R) SFHEA

Originally trained as a Diagnostic Radiographer at the Westminster Hospital, practising in London and southern counties, Penny subsequently gained extensive experience within Higher Education as a senior academic, contributing her knowledge and insight to the delivery of professional programmes and at a strategic level.

She is a Senior Fellow of the Higher Education Academy and an external examiner for undergraduate and postgraduate programmes at Birmingham City University and the University of Hertfordshire respectively. She has authored various publications, undertaken conference presentations at local and national level, and peer reviews for two professional journals.

In 2012, she was awarded a Doctorate in Medical Imaging following a programme of research into “The design, implementation and effectiveness of a sole eLearning module to prepare non-medical healthcare practitioners to report radionuclide bone scans”. This work has informed her current research, which includes the promotion of ongoing professional education to meet workforce needs, through the development of sustainable, interactive and adaptive eLearning technologies.

She maintains a keen interest in current professional issues through her involvement as Vice Chair of the Nuclear Medicine Advisory Group and as Treasurer for the Association of Paediatric Radiographers. She also maintains her role a registered assessor for the Society and College of Radiographers involved in the accreditation and approval of educational courses and advanced practitioner applications.


Dr Sai Han MBBS, MSc, FRCP(Glasg)Dr Sai Han

Dr Sai Han is a Consultant in Nuclear Medicine at the Glasgow Royal Infirmary and Clinical Lead at the West of Scotland PET/CT Centre. He is also an Honorary Clinical Senior Lecturer at Glasgow University.

Dr Han trained in Nuclear Medicine and Hybrid imaging in the UK and USA. His main interestis in PET/CT and SPECT/CT imaging and he takes part in the North East Glasgow lung cancer MDT.

Dr Han is a member in SIGN guidelines for lung cancer 2014, the British Nuclear Medicine Society Education Committee, and the UK Nuclear Medicine Specialist Training Committee. He also contributes to FRCR IIA GI module lectures and IIB tutorials in the West of Scotland Radiology Training Scheme.



Dr John Thompson PhD MSc BSc (Hons)

John is a Senior Radiographer and Lecturer in Radiography with his role split between University Hospitals of Morecambe Bay NHS Foundation Trust and the University of Salford. In his clinical role he works within a radiopharmacy and a single gamma camera department. In his academic role, 

John is the module leader for Dissertation modules for MSc Advanced Medical Imaging and MSc Advanced Practice (Nuclear Medicine), where he has overseen a large number of varied MSc dissertation projects in a number of disciplines. He is also centrally involved in the delivery of MSc Advanced Practice (Nuclear Medicine). He has research responsibility in his academic role and takes part in the teaching and supervision of undergraduate, postgraduate, and PhD students.

John’s main research interests are in the areas of observer performance, visual perception and image interpretation. His PhD focussed on the value of the low-resolution CT images acquired for attenuation correction in myocardial perfusion imaging.

John is currently in the process of applying to be a Fellow of The Higher Education Academy and is also due to start teaching observer performance (ROC, JAFROC, VGA) to students on the MSc Health degree at the University of Lausanne. John is also an External Examiner for the BSc and MSc Medical Imaging degrees at the University of Leeds.


David Williams

I started my Radiography career at the Royal Naval Hospital Haslar in Gosport and had the unique distinction of being the last radiographer to achieve the DCR(R) at the Royal Naval School of Radiography, before it became the Tri-Service school and moved to Woolwich.

After a mixed career I was the lead for the Specials examinations at Haslar when I was offered the opportunity to work with the Army at Queen Elizabeth Military Hospital in Woolwich, during which time I completed the DRNI at Guy’s Hospital.

Returning to the Royal Naval Hospital Haslar I commenced my Masters Degree in Nuclear Medicine at Portsmouth University.  During this period, I was mainly involved in the Specials and Angiography at Haslar, with short spells in Nuclear Medicine, before taking redundancy under the “Options for Change” programme. I completed my MSc as a civilian.

At this point exploring my options, I took a one month locum contract with Portsmouth Hospitals NHS Trust to work in Nuclear Medicine and am still here some 21 years later.

I studied for my Professional Doctorate at Portsmouth University, and was awarded a PGD in Advanced Medical Research when I had to leave the course du to personal issues

I have the privilege of being the Superintendent Radiographer for Nuclear Medicine  at Portsmouth hospitals, a post I have held since 2010.

I also now hold the distinction of being the only Nuclear Medicine professional trained by the UK Armed Forces and still practicing

I have previously been a member of  the Molecular Imaging specialist group of the British Institute of Radiology


My present interests are across the whole of Nuclear Medicine, but I have a special interest  in the changes occurring in Nuclear medicine and how these can be addressed to ensure a secure future for the profession.


Angela Meadows


Angela currently works with Alliance Medical and is responsible for managing the NHS imaging service partnerships at the Preston PET-CT Centre (Royal Preston Hospital Lancashire) and the MRI service at Westmorland General Hospital. Angela has worked in imaging service management for over 10 years, managing PET CT and MRI / CT imaging partnerships in both the public and private sectors.

Angela trained as a Diagnostic Radiographer in 1994-1997 with the University of Leeds. Upon qualification, Angela returned closer to home to work at Blackpool Victoria Hospital as a General Radiographer. In 2000 Angela commenced her MSc in Advanced Practice in Nuclear Medicine with the University of Salford.

Whilst continuing to work in Nuclear Medicine, Angela commenced an additional role as Clinical Tutor for the Undergraduate Radiography Programme for Lancaster St Martins (Now University of Cumbria) working with the university for approximately 3 years before leaving the NHS to take on a unique opportunity to specialise in PET CT.

Angela’s specific interests are in PET CT, research, paediatric NM imaging and MRI safety. Angela has been working as part of the Nuclear Medicine Advisory Group for approximately 4 years and was delighted to be appointed chair in late November 2017.


Jo Weekes DCRR DRI MSc(oxon)

Jo is currently the Chief Clinical Radiographer at New Cross Hospital, Wolverhampton and leads the Clinical Therapeutic Nuclear Medicine service. As Chief Clinical Radiographer, she is responsible for leading and developing therapeutic nuclear medicine services for the Royal Wolverhampton NHS Trust.

After qualifying as a radiographer, Jo worked in general radiography before specialising in Nuclear Medicine, undertaking the DRI at the Bradford School of Radiography, and later undertaking an MSc in Diagnostic Imaging at Oxford University (Wolfson College) with Dr Basil Shepstone.

Jo also has experience of CT and MRI both in the human and veterinary field, having worked in acute and specialist hospitals, plus gaining 13 years’ experience in equine and veterinary hospitals.

She has previous experience of University teaching at Oxford (MSc Diagnostic Imaging and FRCR Part 1) and have published various papers as well as contributing to various chapters in the textbook “Equine Scintigraphy”. Jo also has presented at National and International Conferences.

Key Interests: Service Development / Professional Development / Clinical Diagnostic and Therapeutic Nuclear Medicine / Research and Veterinary Nuclear Medicine


Tristan Barnden BSc(hons)

Tristan qualified as a Radiographer in 2004, working within the NHS in Radiology and Nuclear Medicine. I completed my Postgraduate training in Nuclear medicine in 2008 taking charge of my own department in 2010. I am currently Trust Lead Superintendent for Nuclear Medicine for the Maidstone and Tunbridge Wells NHS Trust. In 2015 I completed my Cardiac Stress Leaders postgraduate and maintain a strong interest in Nuclear Cardiology, and extend roles for Radiographer and other Non-Medical Practitioners in this field.

He works as a sessional lecturer for London Southbank University and enjoy helping to train and educate the next generation of Radiographers and promote Nuclear Medicine as key growth area for the future.


Rayjanah Allie

Rayjanah Allie is a Nuclear Medicine Radiographer with experience spanning more than 20 years in private, NHS, paediatric and teaching hospitals.  She currently works as the Operational Superintendent at UCLH, where she oversees Nuclear Medicine, PETCT and PETMR.  She has participated in several publications and enjoys the mixture of clinical and managerial duties, with a keen interest in Cardiology, Paediatrics and Talent Management and Development.


Clare Moody BHSc(Hons) PGDip PGC

Clare is a senior research radiographer at Newcastle Hospitals NHS Trust.  After gaining a BHSc (Hons) at Leeds University in 1999 she worked in general radiography at Hull Royal Infirmary before moving to the Newcastle Hospitals NHS Trust in 2000. Clare was promoted to Senior CT Radiographer in 2004 before moving into Research Radiography in 2011. 

She has enhanced her professional qualifications by completing a Post Graduate Certificate in Medical Imaging in 2003 at Sheffield Hallam University, a Radiopharmaceuticals course at Kings College London in 2011 and gained a distinction for a Postgraduate Diploma in Nuclear Medicine Imaging at Salford University in 2016.

Clare has experience in general radiography, CT, MRI and PET/CT.  She also currently works in collaboration with Newcastle University in PET/MRI.  Clare’s main responsibilities involve the evaluation, implementation and data management of research studies/clinical trials in areas such as oncology, haematology, cardiology and paediatrics. 

Clare works with the Department of Health and Social Care as an active member of the ARSAC committee where she reviews research applications which require the use of radioactive substances.  Clare has presented at conferences both locally and nationally on Dementia imaging in PET/CT.

Sarah Stace DCR, MSc 

Sarah is the superintendent radiographer for Nuclear Medicine at Withybush Hospital, Pembrokeshire. The Department has a SPECT CT gamma camera that serves four district general hospitals covering a geographical area of the third of Wales. The centre provides extended working days to facilitate around 2,100 scans per annum.

The Department offers bone, renal, lung, gastric, endocrine, brain, cardiac and paediatric Nuclear medicine imaging. There is a Radiographer-led reporting service for all non-cardiac examinations.

Sarah trained at the Swansea School of Radiography and gained her MSc at City University, London. She studied for additional M level qualifications in clinical reporting and hybrid imaging and provides several reporting sessions per week.

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