Overview

Stereotactic radiation therapy (SRT) is also referred to as stereotactic body radiation therapy (SBRT) or stereotactic ablative radiation therapy (SABR). It is an advanced technique used to treat small, well-defined tumours or high-risk postoperative areas. It can be used to treat both primary and metastatic (sometimes referred to as secondary) tumours. These are tumours that have spread from other organs in the body to cancers in the brain, spine, bones, liver and lung.

The specialised technology allows a multiple, highly precise radiation beams to deliver a high dose of radiation to the tumour very accurately to a small target. This is made possible by the use of 3D treatment planning with advanced imaging technology (e.g. CT scans, PET, MRT) to localize the tumour accurately in four dimensions.

With the ability to treat with sub-millimetre accuracy, there is a steep dose gradient outside the tumour and the surrounding healthy tissue is not affected in a manner that is not achievable by conventional radiation therapy.

Due to the larger daily doses of radiation delivered to patients with stereotactic radiation therapy, treatments can be completed within a single treatment, or multiple treatments spanning over 2-10 days. Each daily treatment usually takes no longer than 20 minutes. This treatment can be done on an outpatient basis and normal activities can be resumed thereafter.

Other Treatments Available

  • 3D Conformal External Beam Radiotherapy is one of the most common forms of external beam radiation therapy. It effectively targets cancer tumours while sparing healthy surrounding tissue.

  • Intensity-modulated radiation therapy [IMRT] is high precision radiation therapy that delivers high dose, modulated radiation beams to cancerous tumours, while limiting impact on healthy surrounding tissue.

  • 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.

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About Dr Johann Tang

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.

Why Choose Dr Johann Tang

Dr. Johann Tang is an experienced radiation oncologist who aims to deliver the highest level of care to his patients. e is dedicated to understanding each patient’s condition and provides holistic customized care that is both effective and compassionate. 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.

Experienced Radiation Oncologist

Dr. Johann Tang is a highly experienced radiation oncologist with several accolades to his name. Prior to entering private practice where he is currently a Senior Consultant and Medical Director. Dr Tang was at NUH for 18 years from 2001 to 2019. Dr Tang spearheaded and built up the breast brachytherapy (Accelerated Partial Breast Irradiation APBI), outpatient interstitial image- guided cervical brachytherapy and paediatric radiotherapy services at NUH, to provide an array of the latest and best treatment options for patients. Dr. Tang is also passionately involved in research having authored numerous peer reviewed publications, and has won several research prizes.

Evidence-based Treatments

Dr. Johann Tang and his team utilizes technology that has proven to be effective in cancer treatment. Having decades of experience in treating and researching the disease has enabled Dr Tang to remain current and on top of best practice and novel techniques, providing his patients with full assurance that they are receiving the most effective treatment available.

Patient-centered Care

Dr Johann Tang’s patients are his top priority. He journeys with them from diagnosis till the completion of treatment. With Dr Tang, all patients can be fully assured that their clinical needs and well being are attended to.

"I guarantee my very best expertise delivered with compassion and dignity as we journey TOGETHER to BEAT this dreaded illness."

- Dr Johann Tang

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Contact Dr Johann Tang

ME Novena Specialist Group Pte Ltd
Mt. Elizabeth Novena Hospital
Address: 38 Irrawaddy Road
#08-36/7/8/9
Singapore 329563
Telephone: +65 6690 6811
Fax: +65 6690 6828
Whatsapp: +65 9641 4747
Clinic Hours:

Mon – Fri: 8:30am – 5:30pm
Sat: 8:30am – 1:00pm
Sun & Public Holidays: Closed

Farrer Park Hospital
Address: 1 Farrer Park Station Road #07-14
Singapore 217562
Telephone: +65 6690 6811
Fax: +65 6690 6828
Whatsapp: +65 9641 4747
Clinic Hours:

Mon – Fri: 8:30am – 5:30pm
Sat: 8:30am – 1:00pm
Sun & Public Holidays: Closed