Leeds Test Objects 사의 CBCT 팬텀 SedentexCT IQ 입니다.

A PMMA cylinder (160 mm diameter) with recesses to house test inserts
(fig. 1). Within the body of the cylinder are features for the following tests;

Noise/Uniformity
The lower section of the phantom is uniform PMMA (density 1.20 +/- 1.00%)

Geometric Distortion
An array of 2.0 mm diameter, 3.0 mm deep Air gaps are uniformly pitched at 10.0mm
intervals through one slice of the cylinder

Test Inserts are included to perform the following measurements:

Spatial Resolution
Line Spread Function (LSF) - PMMA/PTFE interface (fig. 2)
Point Spread Function (PSF) - 0.25mm diameter stainless steel wire suspended in air (fig. 3)
LP/mm - alternating Aluminium/polymer (XY) (1.0, 1.7, 2.0, 2.5, 2.8, 4.0 and 5.0LP/mm) (fig.4)
LP/mm - alternating Aluminium/polymer(Z) (1.0, 1.7, 2.0, 2.5, 2.8, 4.0 and 5.0LP/mm) (fig. 5)

Contrast Resolution (fig. 6)
1.0, 2.0, 3.0, 4.0, 5.0 mm diameter Aluminium, PTFE, delrin, LDPE, Air, Water (PMMA) rods suspended in PMMA

Pixel intensity (fig. 7)
10.0 mm diameter Aluminium, PTFE, delrin, LDPE, Air, Water (PMMA) rods suspended in PMMA

Beam Hardening Artefacts (fig. 8)
A line of three 5.0 mm diameter rods of Tisuspended in PMMA

Blank PMMA insert (fig. 9)