HP PRO Solution Put to the Test

Stable and reliable immobilization for proton and photon therapy

Reliability and stability – two pillars of safe and effective immobilization for proton/photon therapy. Characteristics that were of the highest importance to us when we designed the Orfit HP PRO – our proton compatible immobilization solution.

A series of extensive clinical tests by MAASTRO Clinic (Maastricht, The Netherlands), has now further confirmed the reliability and stability of the HP PRO.

 

Proton compatible immobilization

The Orfit HP PRO Solution is an immobilization device designed for brain, head, and neck proton therapy. As it is a versatile system, it lends itself perfectly to photon therapy as well.

The system has been designed to meet the specific standards that proton therapy demands. It includes a homogeneous low-density immobilization device with a narrow carbon fiber base plate in the head and neck area. Because of its ingenious design, it allows for close range positions of the treatment device.

Orfit HP PRO, a proton compatible immobilization system

In addition, the HP PRO System uses the ultra-stable Nanor masks for guaranteed comfort and stability. This innovative thermoplastic material makes use of nanotechnology for improved mechanical properties.

Learn more about the Orfit HP PRO system on orfit.com/proton.

 

Clinical testing

MAASTRO Clinic recently did extensive testing on the Orfit HP PRO as a setup for proton head and neck treatments.

The clinic has been using the Orfit HP PRO system since September 2018 and they apply it for both photon and proton therapy.

In their internal clinical test, MAASTRO verified the efficacy of two different Orfit HP PRO set-ups:

 

HP PRO head immobilization

The first set-up consisted of the following components:

First proton compatible immobilization set-up put to the test.

 

HP PRO head, neck and shoulders immobilization

The second set-up consisted of the following components:

Second proton compatible immobilization set-up put to the test.

 

Method and Results

In both set-up analyses, MAASTRO used extra CBCT imaging before and after treatment to identify residual error and intrafraction movement.

In the head and neck set-up, they applied 6D offline matches of 23 patients in total to determine the margins in lateral (x), longitudinal (y), and vertical (z) direction. They found that a PTV margin of 1 mm is achievable to treat neuro patients with the HP PRO immobilization system, extended with a biteblock.

In the head, neck and shoulders set-up, they applied 4D offline matches of 17 patients to determine the margins in lateral (x), longitudinal (y), and vertical (z) direction. For this set-up, MAASTRO found that a margin of 3 mm CTV-PTV is suitable to treat the H&N patient.

 

In conclusion, MAASTRO’s findings suggest that the HP PRO system is indeed a reliable and stable system, resulting in small margins for CTV-PTV.

>> Review MAASTRO’s complete findings on the HP PRO’s efficacy in these slides:

(click to enlarge)

HP PRO for proton therapy put to the test

 

 

Written by Rob Martens, Bachelor in Radiation Oncology and Medical Imaging Techniques

Radiation Oncology Product Specialist at Orfit Industries.

Rob has over 10 years of experience as a Radiation Therapist in a clinical and research environment.

He provides product education in Dutch Radiation Oncology Centres and gives input and support to the Orfit R&D and Sales and Marketing team.

 

Subscribe to our mailing list

* indicates required
Select your preferred newsletters

The protection of your personal data is our priority. Thank you for subscribing to one of our newsletters. We would like to invite you to share some personal data with us. The protection of this data is our priority.

By submitting this form, I agree to the processing of my data to receive personal messages by mail.

You can change your mind at any time by clicking the unsubscribe link in the footer of any email you receive from us, or by contacting us at welcome@orfit.com. We will treat your information with respect. For more information about our privacy practices please visit our website. By clicking below, you agree that we may process your information in accordance with these terms.

We use MailChimp as our marketing automation platform. By clicking below to submit this form, you acknowledge that the information you provide will be transferred to MailChimp for processing in accordance with their Privacy Policy and Terms.

We've selected some similar articles for you
How to Clean and Disinfect Orfit Masks and Hardware
Hygienic measures to protect the health of patients and staff
Excellent hygiene is now more important than ever. We inform you on how to clean and disinfect the Orfit masks and hardware at your radiotherapy facility.
Read more
Shoulder Positioning in Radiation Therapy
Improve patient comfort and facilitate shoulder positioning
When immobilizing head and neck patients for radiation therapy, take these tools and tips into account to improve shoulder positioning.
Read more
How to use Orfit Vacuum Bags
Positioning and indexing vacuum bags for optimal immobilization
It is of vital importance that vacuum bags are positioned and indexed correctly to ensure optimal reproducibility. This article discusses several positioning do's and don'ts and covers all indexing options to get perfect use out of Orfit Vacuum Bags.
Read more