Brachytherapy is a special form of internal radiation therapy, where a radioactive source is placed close to or inside the tumour. It is used commonly in Gynaecological cancers such as cervix or endometrial cancers, breast cancer and prostate cancer. This characteristic of the treatment sets it apart from External Beam Radiation Therapy [EBRT], where radiation beams are delivered from outside the body.

The main advantage of brachytherapy is the sharp dose fall off over a short distance, which allows sparing of the surrounding normal tissues and hence reduction in side effects without compromising the tumour dose. This enables the tumour to receive full dose.

Another advantage for brachytherapy is that since the radioactive sources are placed close to the tumour, they will retain their position in relation to the tumour irregardless if the patient moves or breaths during a treatment procedure. This ensures precise and accurate delivery of the radiation treatment.

Brachytherapy is administered through either a permanent radioactive seed implant (Low Dose Rate “LDR” treatment) or through moving a radioactive source in and/or around the cancer (High Dose Rate “HDR” treatment). With HDR treatment, the radioactive source is retracted out of the body once depositing the prescribed dose by the radiation oncologist.

Our radiation oncologists will discuss which treatment is suitable for you.

Other Treatments Available


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. 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 reputed 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 utilise advanced technology that has proven to be effective in diagnosing and treating a wide range of cancers. Dr. Tang has decades of experience treating and researching the disease, and stays current on the latest procedures, equipment, and technology in order to ensure his patients receive the highest standard of care.

Patient-centered Care

Dr. Johann Tang’s patients are his top priority, and he strives to care for them in a holistic manner, from diagnosis and treatment to helping them and their families cope with the illness emotionally. Patient education is also a very important part of their care – Dr. Tang and his team will walk patients through each step in the management of their condition, ensuring all their questions are answered and preparing them sufficiently for what’s to come.

"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
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