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Computed Tomography
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CT QA Phantom JCT II
CT QA phantom for initial calibration as well as follow-up periodical quality check of CT scanners
Features
- The phantom can be used for initial and follow-up QA tests listed below, described in JIS Z 4752-3-5: 2008 (IEC 61223-3-5: 2004) and Z 4752-2-6: 2012 (IEC 61223-2-6: 2006)
- Ability to capture defects of the myocardial region
- Conforming to JIS Z 4923: 2015)
Evaluation Parameters
Axial Scan:
- Slice Thickness
- Spatial Resolution
- Low contrast resolution
- Noise
- Mean HU number
- Uniformity
Helical Scan:
- Slide Thickness
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Multi Slice CT Phantom MHT
The phantom can be used for features of CT evaluation, such as high and low contrast resolutions, feed direction and CTDI
Features
- Non-aqueous, easy set-up enables liquid-free evaluation session
- Designed to allow evaluation in volume scanning
Evaluation Parameters
- CTDI
- Contrast resolution sensitivity profile
- Contrast-to-Noise Ratio (CNR) evaluation
- Evaluation of effective slice thickness, SSPz evaluation
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Multi Energy CT Quality Assurance Phantom
Water Equivalent Material, various inserts and empty bottles enable to verify the appropriate Multi-Energy CT settings
Features
- Phantom using innovative Water EquivalentMaterial
- Empty bottles enable insertion of various itemsand check how they react to Multi Energy CT
- Save time and efforts to produce custom-made water phantoms
- Two different sizes of body (TR-I, TR-J)
Applications
- ME-CT image analysis protocol
- Metal artifact reduction
- Reduction of contrast media
Evaluation Parameters
- Uniformity
- Signal-to-noise ratio (SNR)
- Image contrast
- CT-dose index (CTDI)
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QUART didoCT
The QUART didoCT meter is designed for easy and precise dose-width product measurements. Its innovative detector features ionisation as well as solid-state technology.
The didoCT is also the first pencil chamber meter with the ability to measure HVL directly in the same exposure as the DLP (didoCT+ version).
The didoCT is equipped with a backlit display to assure swift readings even in darkened environments and the dose or DLP rate is refreshed continuously on the display while the measurement is running.
Special Feature - Direct CT-HVL Measurement
The meter‘s HVL feature is designed to easily measure the aluminium equivalent for a wide range of CT imaging equipment. It is calibrated at suitable standard radiation qualities in accordance with the majority of CT scanners used in radiology or radiation therapy
Specifications
● DLP: 0.2 µGycm - 999 mGycm (Uncertainty: ±5% / Resolution: 0.01 nGycm)
● DLP Rate: 0.25 µGycm/s - 999 mGycm/s (Uncertainty: ±5% over full range / Resolution: 0.1 nGycm/s)
● Exposure Time: 0.5 ms – 300 s (Uncertainty: ± 0.5 ms / Resolution 0.1 ms)
● CT-HVL (didoCT+): 3.0 – 9.0 mm Al (HVL output, Uncertainty: +/- 8% / Resolution: 0.1 mm Al); Internal Filtration 2.8 - 29 mm Al equivalent and corresponding range of 70 - 150 kVp. -
QUART DVTap
The QUART DVTap phantom is designed to be used as a universal tool for 3D imaging equipment including CT applications.
The phantom (combined with QUART's CTtec software) has been endorsed by IAEA, EFOMP and ESTRO as a comprehensive solution for time-efficient CT and CBCT QA procedures.
Only one exposure is required to create a 3D data set containing all required parameters to evaluate image quality.
Automated evaluation through unique QUART QA/QC software.Phantom can be applied for field sizes from 4x4cm to large fields-of-view (FOV). A universal holder or customised phantom holders available for easy and reproducible positioning.Technical specifications
- Spatial resolution: Line spread function
- Resolution: Z-Resolution
- 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
- Scatter radiation modules: 1x 6 cm / 1x 5 cm
- Nyquist Frequency (NF)
- Contrast-to-Noise Ratio (CNR)
- Homogeneity / Image Uniformity
- Z-Resolution
- Modulation Transfer Function
- Artefacts, Image Flaws
- Figure of Merit (FOM)
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QUART Dido DTO
The QUART didoDTO software tool is used for transferring stored measurement data from dido meters into a PC system. From there, the data can be processed through Excel templates.
QUART didoDTO is available as an optional extra for users who need a bit more flexibility than just a stand-alone meter. One license can be used on one PC for a couple of EASY / CT / MAS / SVM meters.
General Features
- Data export of all stored parameters to Microsoft Excel templates _ Developed for ease-of-use
- Quick and easy server registration for end-users available 24/7
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QUART Nonius
The QUART Nonius is an easy-to-use and very sophisticated measuring instrument to verify size and geometrical properties of x-ray fields. It can also be used to analyse characteristics of fanned x-ray beams as used in CT or dental panoramic x-ray (OPG).
The QUART Nonius is incredibly flexible and its precision is an absolute strong point – as it achieves a resolution in the socalled nonius range of 0.1 mm.
Recent studies have proven that QUART Nonius can also be used for field measurement in radiation therapy applications.
Specifications
- Accuracy / Resolution: +/- 0.1 mm
- Exposure Threshold: Dose = 100 µGy / Dose Rate = 20 µGy/s
- Minimum Exposure: Variable; depends on application and tube filtration
- Measurement Method: Open measurement – no added filtration
- Connectivity: Standard USB (2.0)
- Sensor Area: 40 mm Length
- Radiopaque center marker (Visible in test exposure)
