​The Radiation Oncology Target Delineation Workshop is a 2.5 day workshop that focuses on minimising the variation in target volume delineation in the delivery of conformal radiotherapy. The workshop will bring together site-specific radiologists and radiation oncologists to bridge gaps in knowledge through interactive sharing and practical hands-on sessions.


No further registration will be accepted


Dear Friends,

It is our great pleasure to invite you to our inaugural target delineation workshop.


This workshop will be hosted by National University Hospital Singapore.


Over two and a half days, we aim to improve your knowledge of cross-sectional anatomy and to reduce the variability in the contouring process.


Although we would like to cover all subsites comprehensively, this will not be possible given the limited time and resources. As such, for our first workshop we will cover Head and Neck, Central Nervous System (CNS), Upper Gastrointestinal tract, Breast and Gynaecological cancer.


We will aim to cover the other subsites in our coming workshops.

We will cater for adequate workstations so that participants can put into practice what they have learnt, and discuss practical points with our expert faculty.


We look forward to hosting you for an enriching experience.


Yours sincerely,

Dr Bala Vellayappan

Course director

Consultant, Radiation Oncology, National University Cancer Institute

Asst. Professor, Yong Loo Lin School of Medicine, NUS






Target volume delineation is a crucial step in conformal radiotherapy.

Unfortunately, it is subject to great variability and hence is source of potential error in patient management

Minimising the variation in target volume delineation is an important quality assurance process in the delivery of conformal radiotherapy

All radiation oncologists rely on CT and MRI imaging in daily clinical practice, but have not had formal radiology training.

This workshop intends to bring together site-specific radiologists and radiation oncologists to bridge gaps in knowledge


Our experienced faculty will share tips and tricks which they use in their clinical practice.

Participants will have an opportunity to put into practice what they have learnt during our hands-on session

Radiation oncology trainees


Junior radiation oncologists


Radiation therapists and dosimetrists


Senior radiation oncologists wanting to refresh and validate their knowledge

Target Audience

Improve the knowledge of cross-sectional anatomy, including optimal imaging sequences

Reduce variability and improve accuracy in determining target volumes and organs at risk

*5 CME points will be awarded

Workshop Aims

About Workshop


1. Head and Neck

2. Central nervous system (CNS)

3. Gastrointestinal tract

4. Breast

5. Gynaecology

Radiologist and radiation oncologist share tips on accurate delineation of tumour and critical structures

Participants will delineate structures on clinical cases and given opportunity to discuss with the expert faculty.

Experience 2 different planning platforms 

Only 40 places available to maximise faculty-participant interaction

 Subsites to be covered 

 Site-specific Experts 

 Hands-on Sessions 


 Small Faculty-to-Participant ratio 


Organising Committee

 Course secretariat 


 Course Director 

Dr Bala Vellayappan

Dr Francis Ho

Dr Timothy Cheo

Dr Johann Tang

Dr Leong Yiat Horng

Dr Soon Yu Yang

Dr Tan Teng Hwee

Dr Ivy Ng

Mr Cai Shao Bin

Ms Tan Yun Inn

Ms Norizan Salim

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