Dental

SedentexCT IQ

SedentexCTIQ tests:

Noise/Uniformity

Geometric Distortion

Spatial Resolution

Contrast Resolution 

Pixel intensity 

Beam Hardening Artefacts 

SedentexCT DI

The SedentexCT DI dose index phantom comprises a stack of PMMA plates forming a cylinder representing the adult head.

CBCT-161

CBCT-161 permits measurement of the following image quality parameters:

Pixel Intensity Value Linearity

Noise

CNR

Homogeneity

Artefacts

MTF

DENTEST

Used for dental radiography, DENTEST enables the following checks to be made:

Uniformity

Dynamic range

Low contrast resolution

Detector homogeneity

TO PAN

TO PAN is a dental phantom that allows the complex focal trough of the panoramic X-Ray unit to be quantified.

TO PAN enables:

Quantification of the focal trough and image layer

Accurate determination of the bite offset

Quantification of the symmetry of the scan

Measurement of the incident beams angles

Simple visualisation of faults.

Spatial Resolution testing

TOR DEN digital

TOR DEN Digital phantom is designed to be used to check the image quality performance of digital dental X-Ray systems including intra-oral, panoramic and cephalometric units.

TOR DEN conventional

TOR DEN conventional phantom is used for units with conventional film-based image acquisition.

Enables the following tests to be made:

Optical Density Constancy

Radiation Field Alignment ~ for Panoramic and Cephalometric tests only

TOR DEN plus

Leeds Test Objects’ TOR DEN Plus phantom is designed to be used to check the image quality performance of modern high-resolution digital dental intra-oral X-Ray systems.

Enables the following tests to be made:

Limiting Spatial Resolution (8.0 – 24 LP/mm)

Low Contrast Resolution

(0.2, 0.5, 1.0 and 2.0mm dia.)
(2.0, 1.0, 0.5, 0.3 and 0.1 mm depth)

Image Receptor Dose

TO UniDENT

Based on a novel step-wedge approach, TO UniDENT is uniquely different from conventional step-wedges in that its steps are individually calculated to simulate the extremes of the intra-oral imaging task. This makes it more sensitive than conventional step-wedges, and only to those changes which are clinically significant, preventing wastage of time and resources.

 

Its unique design means it can be used not only for quick routine quality assurance (QA) checks, but also to determine optimum exposure times for balancing image quality against dose (now a legal requirement in many countries).

 

TO UniDENT is particularly useful to those establishments making the move from film to digital, as it allows a direct comparison between the diagnostic imaging capabilities of the two modalities: it highlights the effect of using different display and / or image processing functions on the digital systems, thereby helping dentists decide which options to use for their particular imaging needs (eg. caries detection vs. periodontal work).