Our RADIOLOGISTS
Providing diagnostic excellence throughout Queensland
Every day our radiologists provide the highest level of care, precision and timeliness in caring for the health and wellbeing of your patients.
With high quality imaging and accurate reporting, our radiology team is there to support you and your patients in receiving the diagnosis needed for the best possible healthcare.

Dr. Alison Butt
BDS, D.Clin.Dent
Dr. Alison Butt was born and raised in Adelaide, and obtained her Bachelor of Dental Surgery at the University of Adelaide in 1993. She worked in general dental practice before completing specialist training in Dento-Maxillofacial radiology at the University of Queensland in 2010.
Dr. Butt also works as a clinical consultant for Queensland Health Oral Health services and has played a key role in transitioning the largest oral health service in the state to digital radiography.
Her special interest is in the establishment of systems to support the optimisation of digital image quality in larger enterprises.

Dr. James Challen
MBBS, FRANZCR
Dr. James Challen obtained his Bachelor of Medicine and Surgery from the University of QLD in 1999. He trained in radiology at Princess Alexandra Hospital Brisbane before going on to complete fellowships in general MRI and cardiac imaging. After completing these fellowships, Dr. Challen became recognised by the college as an MRI supervisor and was accredited by the Australian Conjoint Cardiac Committee to report cardiac CT scans. He moved to the Sunshine Coast in 2009.
Dr. Challen also has an interest in MSK imaging and he currently runs the orthopaedic/Radiology meeting at Nambour Hospital. For many years he has previously run the medical/radiology meeting and Urology/radiology meetings at NGH.
He also has an active interest in research having contributed many talks and posters to the Australian Radiology Scientific meeting. In 2013 he was one of the chief convenors of the QLD radiology scientific meeting. Dr. Challen has been heavily involved in registrar training, first as the director of training at Nambour General Hospital and now as the current director of registrar training at Sunshine Coast Radiology.
Fellowships:
- Fellowship in cardiac imaging (Prince Charles Hospital)
- Fellowship in general MRI (Princess Alexandra Hospital)
Subspecialties:
- Musculoskeletal imaging and procedures
- Cardiac CT
- Breast Imaging
- Prostate MRI
Memberships and accreditation:
- CT Coronary angiogram level B accreditation
- Accredited Breast screen reader with QLD breast screen
- Reports over 5000 mammograms per year
- CT colonoscopy level
Interests:
- MSK imaging
- Breast imaging (MRI, mammography and US)
- Prostate MRI imaging
- Image-guided procedures

Dr. Anthony Chan
MBBS, FRANZCR
Dr. Anthony Chan obtained his Bachelor of Medicine and Surgery at the University of Tasmania. He undertook radiology training at the Royal Brisbane and Women’s Hospital and has subspecialty interests in cardiac and abdominal imaging including Gastrointestinal and Prostate MRI imaging.
Since coming to the Sunshine Coast in 2007 he divides his time between private practice at Sunshine Coast Radiology and as staff specialist at the Sunshine Coast University Hospital where he is part of the radiology training program. He is also part of the Queensland Breast Screen Program.

Dr. Geoffrey Clark
MBBS, BE, FRANZCR
Dr. Geoff Clark obtained his Bachelor of Medicine and Surgery with Honours from the University of Queensland in 1996.
He trained in radiology at the Royal Brisbane and Women’s Hospital, gaining admittance to the RANZCR in 2006. Currently, Dr. Clark works at our Rockhampton practice and also at Breast Screen Queensland, which includes mammography reading, assessment clinics, and multi-disciplinary meetings.
Previously Dr. Clark worked as a staff radiologist at Nambour General Hospital, where he was the supervisor of registrar training.
Fellowships:
- MRI
- Musculoskeletal Imaging (MSK)
- Interventional Procedures

Dr. Jacqui Dalton
BDSc, DClin, Dent(UQ)

Dr. TIM DEMETRIADES
MBBS, FRANZCR, FAANMS

DR SHANE DIERS
MBBS, FRANZCR
Dr Shane Diers graduated from the University of the Witwatersrand, Johannesburg, South Africa, going on to specialise in diagnostic and interventional radiology achieving both FCRad Diag(SA) and FRANZCR.
Prior to joining X-Ray & Imaging in 2019, Dr Diers spent 10 years working in private practice in Johannesburg, and 4 years as a consultant radiologist in the public sector in Whangarei, New Zealand.
Areas of Interest
Dr. Diers has special interests in emergency and trauma imaging as well as diagnostic and interventional musculoskeletal imaging.

Dr. Siavash Es'haghi
MB, ChB, FRANZCR
- MRI
- Breast
- Interventional Procedures

Dr. John Evans
MBBS, FRANZCR, B Med Sci
Dr. John Evans obtained his medical degree from the University of Tasmania in 1988. His Radiology training finished in 1996 and included work at Royal Canberra hospital, Woden Valley Hospital Canberra, Royal Brisbane Hospital, Royal Infirmary and Western General Hospitals Edinburgh. His Nuclear Medicine training was at Princess Alexandra Hospital and Addenbrookes Hospital Cambridge finishing in 2001. He is accredited for PET and CT Coronary Angiography and perform many interventional procedures.
He has spent the last 12 years at Cairns Diagnostic Imaging including 11 years as the manager and MRI supervising radiologist. He has also been the supervising radiologist at Breastscreen QLD Cairns region. He has been lecturing year 4 medical students at JCU and been a clinical examiner. He has given many talks to GPs and other medical groups.
Areas of interest:
- Nuclear Medicine
- MRI
- Breast and prostate imaging and procedures
- Cardiac imaging
Subspecialties:
- General Radiology
- Nuclear Medicine
Memberships and accreditations:
- PET and CT Coronary Angiography
- Breast screen Queensland
- Nuclear Medicine Specialist

Dr. Denise Ladwig
FRANZCOG, DDU

Dr. Rodney Larsen
MBBS (Hons), FRANZCR
- MRI
- Neuroradiology
- Neuroradiology
- MSK imaging
- ANZCTCA Accredited Level B CTCA Radiologist
- Breastscreen Qld accredited radiologist

Dr. Eugene Lim
MB, FRANZCR, FAANMS

Dr. Noel Marginson
MBBS, FRANZCR

Dr. Antonio Pais
MBBS, DNB, FRANZCR

Dr. Andrew Paszkowski
MBBS, FRANZCR, AANZSNM

Dr. Paul Reidy
DipAppSc, BAppSci, MBBS, FRANZCR

Dr. john Salanitri
MBBS, FRANZCR

Dr. Admit Sidana
MBBS, DMRD, FRCR, FRANZCR
- Fellow of Royal College of Radiology, London, UK
- Fellow of Royal Australian and New Zealand College of Radiologists
- Magnetic Resonance Imaging (MRI)
- Musculoskeletal Imaging
- AHPRA
- IRIA
- RSNA
- ARRS

Dr. Mark Sinnamon
MBBS, FRANZCR, FAANMS
- Oncology
- Musculoskeletal (MSK) Imaging

Dr. Paula Sivyer

Dr. tevita taka
MBBS, FRANZCR

Dr. JOHN VELKOVIC
MBBS, FRANZCR

Prof Hans Van Der Wall
PhD, FRACP

Dr. Rastie Van Der Westhuizen
MBBS, FRANZCR

Dr. Peter Wakefield
MBBS, FRANZCR

Dr. Chris Yu
MBBS, FRANZCR