The new Veriqa RT EPID will enable an automated, true 3D EPID-based dose...
The new Veriqa RT EPID will enable an automated, true 3D EPID-based dose verification both before and during patient treatment

Photo credits: NKI-AVL, Amsterdam

Dosimetry solution for radiotherapy

Automating patient QA with advanced 3D EPID dosimetry

Dosimetry specialist PTW Freiburg GmbH signed a collaboration agreement with The Netherlands Cancer Institute – Antoni van Leeuwenhoek Hospital (NKI-AVL, Amsterdam) to jointly develop an advanced EPID-based dosimetry solution for automated patient-specific quality assurance in radiotherapy.

The new software module RT EPID, which will become part of PTW’s patient QA platform Veriqa, builds on the well-established back-projection algorithm of NKI-AVL for EPID-based 3D pre-treatment and in vivo dose verification.

Recommended article

Photo

Dose calculation

Cooperation to improve patient-specific QA in radiotherapy

The dosimetry specialist PTW Freiburg GmbH has entered into a collaboration with the US-based bioinformatics company Radialogica LLC to integrate their advanced SciMoCa Monte Carlo dose calculation algorithm into PTW’s patient QA platform Veriqa. The new Veriqa module RT MonteCarlo 3D, which uses the SciMoCa dose engine for calculation-based radiotherapy plan verification, has received CE mark…

As part of PTW’s Veriqa patient QA platform, Veriqa RT EPID will provide a fully automated, streamlined verification workflow – from measurement and analysis to approval and documentation.

The new Veriqa module will use the advanced back-projection method of NKI-AVL for dose reconstruction, offering significant clinical advantages. Unlike most EPID dosimetry solutions, Veriqa RT EPID will enable a true 3D dose verification from the acquired EPID images by reconstructing the dose in the patient anatomy and comparing it directly with the planned dose. EPID measurements can be performed both before (“pre-treatment”) and during patient treatment (“in vivo”), making it possible not only to detect clinically relevant errors unnoticed during pre-treatment verification, but also to quantitatively assess their dosimetric impact. “The EPID dose back-projection algorithm of Veriqa RT EPID will offer a double benefit,” states Igor Olaciregui-Ruiz, member of the EPID Dosimetry Group at NKI-AVL. “It will verify treatment delivery by using in vivo EPID measurements as well as increase efficiency in pre-treatment verification by using EPID images acquired “in air”, thus eliminating the need for phantom positioning and re-planning.”

Patient safety and workflow efficiency are key issues in any radiation oncology department today

Tobias Schüle

As a true 3D EPID dosimetry solution, Veriqa RT EPID will also allow clinical users to calculate dose-volume histograms (DVH) both pre-treatment and in vivo. “The new VERIQA module RT EPID can be seen as a double-edged sword”, adds Anton Mans, medical physicist at the Radiation Oncology Department of NKI-AVL. “It will provide the radiotherapy treatment chain with an extra safety net while at the same time reducing the overall QA workload.”

The back-projection algorithm of Veriqa RT EPID is a clinically proven and well-established method, which has been successfully used at NKI-AVL in more than 72,000 patient treatments since 2006. “Patient safety and workflow efficiency are key issues in any radiation oncology department today”, says Dr. Tobias Schüle, managing director of PTW. “By joining forces with NKI-AVL, we continue to deliver intelligent patient QA solutions that address these needs. Our partnership pairs PTW’s strength in the development of high-precision dosimetry technology with NKI-AVL’s long-term scientific and clinical expertise in 3D EPID dosimetry.” 

The Veriqa software platform by PTW provides medical physicists and radiation oncologists with an automated, single-source solution for patient QA – from visualization and contouring through all commonly used plan verification methods to documentation. With Veriqa RT EPID clinical users will have an additional, highly efficient dose verification tool at hand, giving them the flexibility to choose the best verification method for their patient treatment plans.


Source: PTW Freiburg GmbH

05.10.2020

Read all latest stories

Related articles

Photo

Dose calculation

Cooperation to improve patient-specific QA in radiotherapy

The dosimetry specialist PTW Freiburg GmbH has entered into a collaboration with the US-based bioinformatics company Radialogica LLC to integrate their advanced SciMoCa Monte Carlo dose calculation…

Photo

Regulators Work With Medical Industry on Radiation Protection

Putting patient safety first is a priority for both HERCA, the association of the Heads of European Radiological Protection Competent Authorities and COCIR, the European trade association…

Photo

Tomotherapy system targets cancer more precisely

When tumours are situated in difficult locations, e.g. near the brain, lungs, prostate or abdomen, patients treated with conventional radiation equipment often suffer severe side effects, which…

Related products

IBA Dosimetry – Dosimax plus A (HV)*

Testing Devices

IBA Dosimetry – Dosimax plus A (HV)*

IBA Dosimetry GmbH
IBA Dosimetry – Dosimax plus I

Testing Devices

IBA Dosimetry – Dosimax plus I

IBA Dosimetry GmbH
IBA Dosimetry – KermaX plus DDP "Duo"

Testing Devices

IBA Dosimetry – KermaX plus DDP "Duo"

IBA Dosimetry GmbH
IBA Dosimetry – KermaX plus SDP

Testing Devices

IBA Dosimetry – KermaX plus SDP

IBA Dosimetry GmbH
IBA Dosimetry – KermaX plus TinO IDP

Testing Devices

IBA Dosimetry – KermaX plus TinO IDP

IBA Dosimetry GmbH
medigration – RIS /PACS

RIS/PACS

medigration – RIS /PACS

medigration GmbH