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  1. Medical Imaging
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Tomography test phantom IAEA-EFOMP-ESTRO
for CT scangeneral purpose

Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose
Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose
Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose - image - 2
Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose - image - 3
Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose - image - 4
Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose - image - 5
Tomography test phantom - IAEA-EFOMP-ESTRO - QUART X-Ray QA Solutions - for CT scan / general purpose - image - 6
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Characteristics

Type of calibration
for tomography, for CT scan
Area of the body
general purpose

Description

Overview
This test set is designed following the IAEA, EFOMP and ESTRO recommendations for fast, time-efficient quality assurance (QA) of cone-beam CT (CBCT) imaging systems. The protocol basis includes DIN 6868-161 and DIN 6868-15 standards for CBCT QA.

Key product information
Only one exposure is required to generate a 3D dataset containing all parameters necessary for objective image-quality evaluation. Automated analysis is available via QUART CTtec QA/QC software. The DVTkp phantom is applicable to field sizes from 4x4 cm up to large fields-of-view. Custom holders are available for a wide range of CBCT devices.

Standard test objects / Materials
  • Standard test objects: PMMA / Air / PVC
  • Material equivalents: Free air / Soft tissue / Bone

Positioning and size
  • Positioning aids: Linear (top side) markers / Selective markers
  • Dimensions: Ø 16 cm, height 15 cm

Measured / evaluated parameters
  • Nyquist Frequency (NF)
  • Contrast
  • Noise
  • Contrast-to-Noise Ratio (CNR)
  • Homogeneity / Image uniformity
  • Spatial resolution / Modulation Transfer Function (MTF) at 10% & 50% modulation
  • MTF according to IEC 62220-1-2
  • CT numbers / Hounsfield Units
  • Z-axis resolution / NF and MTF in axial direction
  • Artefacts and image flaws
  • System indicator / Acceptance indicator (figure of merit)
  • Patient / phantom positioning accuracy
  • Additional QA/QC tests (geometry and distance measurements) to be performed using an external DICOM viewer

Reference
EFOMP working group, Quality control in cone-beam computed tomography (CBCT) EFOMP-ESTRO-IAEA protocol (summary report), Physica Medica, Volume 39, July 2017, Pages 67-72.

Technical specifications
  • SPATIAL RESOLUTION: Line spread function
  • STANDARD TEST OBJECTS: PMMA / Air / PVC
  • MATERIAL EQUIVALENTS: Free air / Soft tissue / Bone
  • POSITIONING TOOLS: Linear (top side) / Selective markers
  • SIZE: Ø 16 cm, height 15 cm
  • Applicable field sizes: from 4x4 cm to large FOV
  • Automated evaluation: QUART CTtec QA/QC software compatibility

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