About TomoTherapy
TomoTherapy System is designed to safely and routinely deliver image-guided,
intensity-modulated radiation therapy (IG-IMRT) for the treatment of cancer
and other diseases. What has made the TomoTherapy System stand out when
compared to conventional radiation systems is the integration of computed
tomography (CT) scanner to perform daily imaging before each treatment
session. The daily imaging capability makes it possible for clinicians to
identify and correct for any variations in patient positioning, changes in
the tumour, or other factors, such as weight gain or loss, to ensure the
continued precise and safe delivery of the radiation dose to the target
area. Because the TomoTherapy System's precision minimizes the exposure of
radiation to surrounding healthy tissue, many doctors report that their
patients suffer from fewer side effects compared to patients receiving
conventional forms of radiation therapy. The precision may enable the
TomoTherapy System to be used to treat patients who have had radiation
therapy before if their cancers have returned using the re-treatment
functionality.
Why Does Precision Matter?
Technological advancements have enabled manufacturers of external-beam
radiation therapy equipment to improve the precision of their delivery
systems.
In general:
1. The radiation beam needs to enter and exit the body
2. The device design limits how radiation beams can be directed into the
body
3. The device may deliver some radiation to the tissue surrounding the
tumour because of tumour motion during treatment
Tomotherapy provide continuous delivery of radiation from 360 degrees around
the patient, or delivery from clinician-specified beam angles. These unique
features, combined with daily 3D image guidance, enable physicians to
deliver highly accurate, individualized dose distributions that precisely
conform to the shape of the patient’s tumour while minimizing dose to
normal, healthy tissue, resulting in fewer side effects for patients. The
system helps in treating all standard radiation therapy indications
including breast, prostate, lung, and head and neck cancers, in addition to
complex treatments, such as total marrow irradiation.
Benefits
Patients are hugely benefited by the new generation of TomoTherapy.
- Daily
imaging helps the doctor to see their tumour shrinkage everyday, helping
them to restrict the dose to the tumour/cancer and not the healthy
tissue resulting in fewer complications and by far superior tumour
control
- Low CT
imaging dose with Iterative imaging even helps patients with metal
implants such as dentures, a pacemaker or orthopedic implants to get
highly accurate treatments as imaging can be done without artifacts.
- High local
control of tumour
- Least dose
to the healthy tissue and normal anatomical organs such as eyes, lungs,
heart, kidneys, parotid glands and other organs fulfilling important
functions within the body etc
- High
survival rate - Least complications or side effects of radiation
treatment
- High local
control of tumour
- Least dose
to the healthy tissue and normal anatomical organs such as eyes, lungs,
heart, kidneys, parotid glands and other organs fulfilling important
functions within the body etc
- High
survival rate
- Least
complications or side effects of radiation treatment
- Targeted
treatments become a reality
- Dose is
restricted to the target or the tumour
- Complicated
and paediatric treatments can be treated with confidence
Treatment field size
Large field cancer is common in the field due to late diagnosis and it’s
often that patient ends up with a large tumour/ cancer or at multiple sites:
- Without
junction means no overlapping dose and thus resulting in highly
conformal treatments and least complications and side effects due to
high dose to healthy tissue or organs incase of regular linac based
treatment
- The most
complicated treatment needs are straight forward and have a simplified
workflow meaning high patient comfort and far superior outcomes
This is an important requirement in the region as the majority of the
patients in the region as per the reports require large field treatments
because of the below factors:
- The region
has a poor detection rate with only 20-30% of cancer diagnosed in Stage
1
& 2
- The region
has a higher incidence of Prostate, head and neck, lung, breast & GI
cancers
making upto 80-90% of cancer in the region and that’s where TomoTherapy
has by far superior treatment results
Range of Indications Covered
- Brain
cancers and benign brain tumours
- Head, neck
and oral cancers
- Breast
cancers, including inflammatory breast disease (both Unilateral &
Bilateral)
- Lung
cancers and lung tumours
- Skin
cancers
- Prostate
cancer, from early-stage to advanced disease
- Oesophageal
and upper gastrointestinal cancers
- Cervical,
ovarian, uterine, vaginal and vulva cancers
- Colon,
stomach, rectal and anal cancers
- Liver and
pancreatic cancers
- Cancers
that have metastasized to multiple locations
-
Pre-transplant treatment for blood diseases, such as leukaemia
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