technique - outpatient cancer therapy
Safe, accurate and painfree
offers an innovative and evidence based treatment alternative for
a variety of tumors throughout the body. Patient movement is automatically
detected and corrected up to sub-millimetre accuracy. Using this
ultra fast correction technology it is possible to provide high
precision radiosurgical treatment of tumors without invasive fixing
of the head or other regions of the body.
The newly developed design of the Cyberknife system enables treatments
not only in the area of the brain but also throughout the spine
and spinal cord or in other parts of the body. While the treatment
is typically administered in a single fraction, there is the additional
option to fractionate (or split) the single dose into 2 - 5 smaller
such a way also lesions in very sensitive body parts can be eliminated
while maximally sparing the surrounding healthy tissue.
newly developed Cyberknife technology offers pain-free, outpatient
"surgery". There are no complications from fixations,
no anaesthesia, no surgical incisions. No inpatient hospital stay
is required, also no subsequent cure or rehabilitation time.
first innovation consists of a particularly lightweight and compact
radiation device mounted on a robotic arm. The precision robot -
which is also used in the automobile industry - can move freely
in 6 plains.
all body parts can be accessed without problems for an optimal treatment.
The system is clearly more flexible in handling and hence more effective
than conventional systems.
second innovation consists of a computer assisted image guidance
targeting system. With this technology the Cyberknife can target
the tumor throughout the treatment and smaller patient movements
can be compensated for.
it is no longer necessary to fix the head of the patient in a frame,
to immobilize the body or to administer anaesthesia, as is required
for conventional systems.
third technical innovation relates to the capability of the treatment
beam to follow moving targets. This is particularly important for
tumors in the lung, liver and renal gland as they move considerably
with breathing. In conventional radiation therapy patients are therefore
put into fixating devices and a larger margin around the lesion
is applied to be certain to hit the target during treatment. Sometimes
the patient is even put into breath arrest during beam on times.
does not need these rather cumbersome techniques: External breathing
is monitored with a infrared camera and correlated with the internal
tumor motion. The robot is following then the tumor during treatment
and one can say Cyberknife is breathing with the patient. The technology
is adapting to the patient and not the other way as in conventional
Cyberknife treatment as a rule is a single session treatment. It
lasts between 45 minutes to 90 minutes depending on the indication.
Immediately after the treatment the patient can resume his normal
further visit for a follow-up examination is recommended after 4
to 6 months only.
Generally, tumors in all parts of the body with a positive indication
for radiosurgical therapy can be treated with the Cyberknife.
the latest in medical high technology allows it to treat even very
irregularly shaped tumors in the area of critical brain regions
such as the visual or auditive nerve, without damage to these sensitive
Angioma / AVM
Uveal melanoma (eye cancer)
cancer (stage I/II)
possibility to provide focussed treatment of tumor tissue while
sparing the surrounding structures also allows for an effective
treatment of brain lesions in areas difficult to access operatively,
such as for example the brain stem or skull base.