Description

The DP-850 is the first comprehensive “end-to-end” phantom that evaluates the entire radiotherapy treatment process. The DP-850 is designed to fully comply with AAPM TG-66 requirements for CT simulators as well as key components of AAPM TG-53 for treatment planning system quality assurance.

The DP-850 is constructed of a solid material with a density value of 0.85 g/cm3 (relative to water) as the background material. It consists of 4 primary modules that are assembled using rods, of a density similar to trabecular bone, around the periphery. Various internal structures and test objects as well as external engravings and fiducials are utilized for integrated testing.

In 2018, the DP-850 was redesigned as the DP-1000 with even more features and water-equivalent background material.

Specifications

CT/SIM QA
• Laser Alignment & Orientation for gantry, walls, ceiling
• CT Couch Orientation, indexing, motion, and position
• Slice Thickness / Profile Width & Sensitivity Profile
• CT Number Constancy
• Field Uniformity & Image Noise
• Spatial & Contrast Resolution
• Virtual SIM with Hidden Target Localization, Contouring, & Laser Movement Accuracy

Treatment Planning QA
• DICOM Transfer
• Spatial & Contrast Resolution
• Slice Thickness
• Field Uniformity & Noise
• CT Number Constancy
• In-Plane Spatial Integrity
• Contouring, Margin Creation, DRR Spatial, Dose and DVH Accuracy

Treatment Imaging QA
• DICOM & Volume Transfer Accuracy
• Spatial Integrity Accuracy
• TG-142 Position / Reposition, Monthly
• kV Imaging and Treatment Coordinate Coincidence
• CBCT Distortion, Spatial Resolution, Contrast, Constancy, Uniformity & Noise

Treatment Delivery QA
• Plan Delivery Accuracy
• Dose Verification
• Target Localization Delivery Accuracy

Photos

Models

• IMT-026 - DP 850 Phantom