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Everything you need to know about Frameless Stereotactic Radiosurgery for Brain and Spine Tumor

What is Stereotatic Radiosurgery?

Stereotatic Radiosurgery (SRS) is a highly targeted and focused radiation treatment which delivers extremely high doses of radiation directly to the target to destroy it.


The term stereotactic is a term used in Neurosurgery to refer to the ability to accurately identify a point in 3-dimensional space. Radiosurgery uses technology used in neurosurgery to destroy the tumour. For more technical details, please see here.

Stereotactic Radiosurgery Singapore

Modern Linear Accelerator with 6 degrees of freedom robotic couch


Today, Frameless Radiosurgery is possible with modern navigational techniques such that patients no longer need to have a metal frame screwed into their skull for accurate targeting

Modern digital navigation achieves sub-mm accuracy

Your Radiosurgery Journey

We understand how difficult the cancer journey is for you and our team of specialists is dedicated to helping you navigate your cancer journey at very stage. You can engage our expertise from start to end of your treatment as well as during specific stages of your treatment. These services are available to our both our LOCAL and INTERNATIONAL patients.

Our Services

Customisation of Radiosurgery treatment plan

Our Team will assess your specific conditions, tests & scans and create a treatment and detailed report with recommendations for optimal results and minimal side effects. We will be able to work with your doctors to ensure you receive quality and optimal treatment

Evaluation of Radiosurgery treatment plan

Our Team will evaluate your existing plan and propose alternatives (if necessary) for optimal results and minimal side effects.

Collaborations with your doctors

Our Team will collaborate with your doctors in your home country to ensure that you receive quality and optimal treatment

Navigating the Journey with AARO





Book a

Virtual Consultation

Send over scans, medical reports etc.

Virtual Consultation

Immediate Follow Up to be determined

Your Radiosurgery Team

Your radiosurgery team matters. They are the critical factor that will determine the success of your treatment. While being equipped with the latest cancer technology is paramount, you require the right expertise to harness the technology in order to manage and navigate the complexities of cancer so that you can go through this journey safely and successfully.

Think of them as your S.W.A.T team, empowered by specialised equipment, to execute a highly classified mission.

Radiosurgery involves the use of cancer technology to deliver extremely high doses of ablative radiation delivered to the tumor in a precise and accurate fashion. While the technology enables, the dose prescription and delivery
depends solely on the
specialist and his team.

Just like how the SWAT Team, armed with the latest weaponry decides when and how they are to eliminate their targets precisely without hurting innocent civilians.


Your Radiosurgery Team will ensure the following critical aspects of the treatment:

Accurate Identification of the tumor to ensure that all cancer areas are outline and nothing is missed.

Exact Synchronization of Radiosurgery protocol configuration and the preset machine tolerances so that unintended movements on the couch do not lead to misses or wrong targeting.

Precise placement of medium and low doses along the radiation path needs to be determined by the specialist so that sensitive organs and tissue function will not be damaged.

These multiple complexities make radiosurgical treatments 'higher risk' than conventional radiation treatments as what is delivered over 1-5 fractions cannot be modified or retrieved once delivered.

Our Brain & Spine Radiosurgery Specialist

Dr Daniel Tan Yat Harn Radiation Oncologist

Dr Daniel Tan Yat Harn

View Dr Daniel Tan's full profile here.

Local experience with radiosurgery for vestibular schwannomas

Source: Singapore Medical Journal, 2018

Hypofractionated Stereotactic Radiosurgery for Management of Large Brain Metastases in Heavily Pre-treated Non–small Cell Lung Cancer Patients

Source: International Journal of Radiation Oncology, 2017

Scientific Editorial
Technical know-how in stereotactic ablative radiotherapy
Source : Journal of Medical Radiation Sciences, published 03 March 2016

Frameless Stereotactic Radiosurgery
Source : Medical Grapevine, August 2015

Radiosurgery offers hope for treatment of Spinal tumour

Source: The Straits Times, September 2015

Hypofractionated Stereotactic Radiosurgery for the Treatment of Large Brain Metastases

Source: International Journal of Radiation Oncology, 2014

Frameless linac-based stereotactic radiosurgery treatment for SUNCT syndrome

Source: Sage Journal,  26 April 2013

View more Articles & Publications by Dr Daniel Tan here.

Medical Director & Senior Radiation Oncologist (Clinical Oncologist)

MBBS (SIN), FRCR (Clinical Oncology, UK)

FAMS (Radiation Oncology)

MBA (Healthcare Management)


Clinical Interest:

Stereotactic Radiosurgery (SRS/SBRT)

Brain and Spine, Breast and Prostate Cancers

Radiosurgery Articles & Publications by Dr Daniel Tan:

Our International Patients

come from countries including Indonesia, Philippines, Papua New Guinea, Sri Lanka, Bahrain, Malaysia, China and more etc.




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