3D Conformal External Beam Radiotherapy is one of the most common forms of external beam radiation therapy [EBRT]. It effectively targets malignant tumours while sparing surrounding healthy tissues.
External beam radiation therapy [EBRT] is a type of radiation therapy that uses one or more beams to deliver high energy X-Rays to the cancerous lesion.
In this treatment, the radiation beams are customised to conform to the precise shape of the malignant tumour. Advanced imaging technology such as MRI and PET scans are used to delineate the precise location of the malignant tumour and any high risk tissues such as lymph nodes.
Highly conformal radiation beams are delivered to the tumour, while significantly reducing radiation exposure to the healthy surrounding tissue. This is achieved using equipment called a Linear Accelerator.
The precise targeting of the cancerous tumour also makes it possible to deliver higher doses of radiation beams during treatment. Higher doses of radiation are usually more effective in controlling the tumour by decreasing the tumour size and killing them.
Volumetric modulated arc therapy [VMAT] involves the use of external radiation therapy beams being directed in a series of arcs or angles to allow for greater access to tumour. VMAT allows more difficult tumours, such as ones wrapped around other important structures, to be targeted precisely.
Image-guided radiation therapy [IGRT] is a radiation therapy which utilises advanced imaging equipment and computer software to accurately target tumours. This minimises the impact on surrounding healthy tissues, resulting in fewer potential side effects from treatment.
Senior Consultant Radiation Oncologist, Medical Director, MBBS (Aust), FRANZCR (Radiation Oncology)
Dr Tang obtained his medical degree from the University of Newcastle, Australia in 1998 and completed his house officer training at the Hunter Area Health Service, Australia before returning to Singapore to start his specialty training in Radiation Oncology at the National University Hospital (NUH). After obtaining his fellowship from the Royal Australian College of Radiologist (FRANZCR) in 2006, Dr Tang underwent fellowships in breast brachytherapy at University of Wisconsin and Arizona Breast Cancer Specialist Centre as well as prostate brachytherapy, skin and paediatric fellowships at Peter Maccallum Cancer Institute, Australia.
Dr. Johann Tang is an experienced radiation oncologist who aims to deliver the highest level of care to his patients. With ethics and empathy held at the core of our practice, we strive to understand your individual needs and provide care that is compassionate and responsive.
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