Download HYPERARC High-definition radiotherapy

HYPERARC
High-definition radiotherapy
HyperArc™ high-definition radiotherapy (HDRT) is
a potential solution for frameless, MLC-based, noncoplanar intracranial stereotactic radiosurgery (SRS). A
defined workflow, including simulation guidelines, patient
immobilization for imaging and treatment delivery,
treatment setup, intra-fraction imaging and a predetermined delivery sequence, enables a one-click delivery
of non-coplanar SRS. HyperArc HDRT is designed to
eliminate guesswork, trial and error, and promote the safe
delivery of SRS with a standardized reproducible and
efficient process.
Non-coplanar SRS encourages the
management of cancer as a chronic disease
by spreading out entrance dose1, which may
result in steeper dose gradients, limiting
the dose to healthy tissue and organs at
risk. However, an additional element of risk
is introduced by adopting a non-coplanar
delivery technique, which could result in the
increase in delivery times for such treatments.
Patient safety
The goal of using a prescribed immobilization device is to
allow the system to recognize the outer limits of the patient
and immobilization envelope. This information is used to
create an envelope that the gantry will not invade. This
collision free envelope is a 2 cm space around the patient
and the immobilization device.
Multi metastatic cases may be
treated using HyperArc.
Automated intrafraction imaging
Imaging Waypoints
Imaging Waypoints are predefined points in the delivery
sequence, before and after each arc, with the intent to
take images safely. These Imaging Waypoints have been
designed to be collision free and automatically populated,
and may be enabled or disabled by the user.
Designed to detect the collision before delivery
1
Clark GM et al. Plan quality and treatment planning technique for single
isocenter cranial radiosurgery with volumetric modulated arc therapy.
Pract Radiat Oncol. 2012.
* 510(k) pending, not available for sale.
Images automatically taken before and after each arc at
pre-determined Imaging Waypoints
Stepping Stones
Machine Performance Check (MPC)
Stepping Stones is an algorithm that is built to allow the
safe retraction of the gantry-couch system to a known,
safe location. The algorithm is designed to be invoked in
a treatment interruption, or if a KV/volumetric image is
desired. The retraction sequences are calculated to be
collision free and efficient.
MPC will include a beam and geometry check and an
evaluation of couch walkout performance through the full
range of couch motion (180°).
Defined workflow
HyperArc HDRT allows non-coplanar treatments to be much
more standardized by prescribing everything from patient
immobilization to intrafraction imaging.
Enhanced MPC to test couch performance
Immobilization/patient setup
The prescribed frameless Encompass™ SRS Immobilization
System by Qfix restricts the movement of the patient
and allows positioning of the patient with sub-millimeter
accuracy. More information on the Encompass System may
be obtained by referencing Qfix documentation.
Automated treatment delivery
HyperArc HDRT is designed to allow more efficient delivery
of non-coplanar treatments with a possible single button
delivery, and automated couch movement eliminating the
need to re-enter the room during treatment. Our goal is to
reduce treatment time to 20 minutes.
Changes to the TrueBeam user interface
The changes to the TrueBeam® system user interface include
the HyperArc HDRT logo, blue automation indicators, and
red boxes that indicate collision risks.
Encompass SRS Immobilization System required to use HyperArc
TrueBeam user interface for HyperArc treatment
* 510(k) pending, not available for sale.
Additional information
Recommended additional products
HyperArc treatments are MLC-based and do not require
accessories. The use of the accessory tray is disabled,
therefore, no accessories can be used during a HyperArc
treatment delivery.
PremierAssurance™ contract
HD120™ MLC
High Intensity Mode energy (6X or 10X)
High-resolution CT with slice thickness of 1.25 mm or less is
recommended.
An MRI or other additional images are not required but may
be beneficial for accurate target contouring.
Devices connected through the TrueBeam Motion
Management Interface (MMI) are not required and cannot be
used during HyperArc treatments.
References
4π non-coplanar radiosurgery bibliography
Research and development partners
University of Alabama at Birmingham
Washington University in St. Louis
University of Glasgow
University of California, Los Angeles
Prerequisites
TrueBeam system software version 2.7 or higher
Encompass™ SRS Immobilization System
PerfectPitch™ 6 degrees of freedom couch
* 510(k) pending, not available for sale.
USA, Corporate Headquarters
and Manufacturer
EMEIA and CIS
Headquarters
Latin American
Headquarters
Asia Pacific
Headquarters
Australasian
Headquarters
Varian Medical Systems
Palo Alto, CA
Tel. 650 . 493.4000
varian.com
Varian Medical Systems
International AG
Cham, Switzerland
Tel. 41 . 41.749.88.44
Varian Medical Systems
Brasil Ltda.
São Paulo, Brazil
Tel. 55 . 11 .3457.2655
Varian Medical Systems
Pacific, Inc.
Kowloon, Hong Kong
Tel. 852.2724.2836
Varian Medical Systems
Australasia Pty Ltd.
Sydney, Australia
Tel. 61 .2 . 9485.0111
Not all features or products are available in all markets and are subject to change.
Intended Use Summary
Varian Medical Systems’ linear accelerators are intended to provide stereotactic radiosurgery and precision radiotherapy for lesions, tumors, and conditions
anywhere in the body where radiation treatment is indicated.
Safety Statement
Radiation treatments may cause side effects that can vary depending on the part of the body being treated. The most frequent ones are typically temporary
and may include, but are not limited to, irritation to the respiratory, digestive, urinary or reproductive systems, fatigue, nausea, skin irritation, and hair loss. In
some patients, they can be severe. Treatment sessions may vary in complexity and time. Radiation treatment is not appropriate for all cancers.
© 2016 Varian Medical Systems, Inc. All rights reserved. Varian, Varian Medical Systems, and TrueBeam are registered trademarks, and HD120, HyperArc, PerfectPitch, and PremierAssurance are
trademarks of Varian Medical Systems, Inc. All other trademarks are the property of their respective owners.
RAD 10425
09/2016