New! Imager QA Module
The Imager QA Module of PIPSpro consolidates TG-142 testing for MV, kV and 3D CT (both cone-beam and diagnostic) into a uniform, easy-to-use interface. Customizable profiles allow a variety of machine, imager, phantom and energy combinations to be quickly saved. Once a profile is selected, the user loads an image for analysis and PIPSpro does the rest. This "one-click" deployment provides three different figures of merit for calculating uniformity, including PIU (ACR percent integral uniformity).
Quick, Quantitative MV and kV QA
The Imager QA Module of PIPSpro provides quantitative, TG-142 compliant planar imaging quality assurance for MV and kV flat panel imagers, including:
- Spatial resolution
- Uniformity and noise
Two phantoms from Standard Imaging (and the Leeds TOR-18 Phantom) are used with this module. The QC-3 Phantom is tailored for MV imagers, whereas the QCkV-1 is ideal for kV imaging systems, including Varian, Elekta and Cyberknife. The QCkV-1 Phantom has tighter line pairs to account for the higher resolution of kV imagers.
Phantom flood field images are imported into PIPSpro allowing for a more robust noise calculation. PIPSpro software runs a comprehensive analysis, creating a relative modulation transfer function (RMTF) curve and resolution with easy-to-read with "stoplight" indicators. This information can easily be stored for historical reference and trending by saving to a shared database.
Advanced QA for Cone Beam CT Systems
The PIPSpro Imager QA Module analyzes 3D image sets of the Catphan phantom, yielding quantitative data for all seven TG-142 cone-beam CT procedures.
Simply import your Catphan images and PIPSpro does the rest. The software automatically finds the proper analysis images and displays all relevant TG-142 data in easy to read tables, charts and images. These results can be easily exported to pdf and printed in one click.
Customize Baselines to Fit Your QA
A comprehensive baseline manager lets users customize Imager QA. This tool can generate and store custom baselines for every test calculated within PIPSpro, allowing for a breadth of metrics to be easily tracked. Once testing is complete, PIPSpro automatically generates comprehensive reports that can be quickly exported to a PDF or Excel file. These reports contain a summary page detailing which values pass or are out of range, along with images of each result. All data is automatically tagged as green, yellow or red for an easy overview of passing/failing results.
TG-142 recommends performing daily IGRT tests with either 2D/2D or 3D/3D matching algorithms using the imaging system software on your linac. This provides x, y and z offset information and pitch, yaw and roll for systems with 6D couches. The IGRT module of PIPSpro tracks offset values over time to spot trends that might reveal clinically significant mechanical inconsistencies.
Precise Winston Lutz/Stereotactic Radiosurgery QA
The Stereotactic module of PIPSpro meets TG-142 specifications for analyzing Winston-Lutz test images for coincidence of radiation and mechanical isocenter, and for periodic stereotactic radiosurgery tests. This module provides quantitative data for in-plane and cross-plane offset. When eight images are used, an additional 3D stand offset is calculated that minimizes target positioning errors. PIPSpro automatically loads all images and performs the analysis without any further user intervention.
Complete MLC QA
TG-142 is the first task group to recommend quality assurance for MLCs. PIPSpro helps integrate these procedures with intuitive analysis of individual leaf positions. This module yields quantitative data compared to baseline and absolute values for;
- Image based MLC QA leaf position accuracy (IMRT and non-IMRT)
- Image based MLC QA leaf transmission (both inter-leaf and inter-bank)
- Image based MLC QA picket fence (multiport)
- Log file based MLC QA Leaf Speed (travel speed)
- Log file based MLC QA Leaf Position Repeatability
- Log file based MLC QA Segmental IMRT (Step and Shoot)
- Log file based MLC QA Sliding window (VMAT) and four cardinal angles
To set up for any of these tests, simply set up the MLC shaper plan provided and deliver to the EPID. No phantom is required.
For leaf position and picket fence PIPSpro analyzes the position of each individual leaf, and left and right bank for each location, compares the data results to tolerance values and produces easy-to-read indicators and reports.
Leaf transmission (leakage test) begins with all MLC leafs closed. PIPSpro analyzes the image to determine inter-leaf and inter-bank leakage.
Leaf Position and Multi-Port tests are automatically processed using DICOM images. Leaf Transmission tests only require the identification of an energy.
Advanced Radiation Field/Light Field
The Radiation Light Field module allows for filmless execution of radiation field versus light field tests and jaw position tests. This module analyzes images of the FC-2 phantom and center marker phantom to provide a quantitative comparison of the projected light field and the radiation field being delivered.
PIPSpro uses the position of the spherical markers to determine the position of the light field; indicated by a red border. PIPSpro identifies the 50-percent radiation field edge and indicate this with a green border. PIPSpro then locates the jaw positions and identifies them with blue square markers along the border of the image.
Data is presented graphically to indicate radiation or light field displacement, crosshair displacement, phantom dimension, field dimension, field rotation and jaw positions.
Powerful Star Shot Analysis
The Star Shot module of PIPSpro uses an EPID or film to measure the stability of rotation of the linac gantry, couch and collimator.
The star shot image is created by closing the main collimators to form a narrow field. Radiation is delivered through the open field to the film or imager at multiple angles. PIPSpro determines the smallest diameter of a circle intersecting the central rays.
PIPSpro then analyzes the image and identifies the projections. A green circle indicates the image search radius which is automatically determined based on image size. The software then finds the center of each projection and traces the projections with orange lines.
To view the analytical data click on the result tab below the image. PIPSpro determines the minimum diameter of a circle that will touch each projection, in accordance with TG-142 specifications. Data is presented in specific fields and as a chart.