The mean (and standard deviation in parentheses) effective atomic number (Zeff) measured in the graphite insert at position 7 (Figure 1) in Zeff images obtained with Dual Source (DS) and fast kV-switching (FKS) DECT techniques, and the aforementioned combined by each vendor’s proprietary metal artefact reduction (MAR) algorithm (DS-MAR and FKS-MAR). The images were acquired with lateral inserts of PMMA, titanium or stainless steel. The measurements should be compared to the true atomic number of carbon (Z = 6).
| . | Effective atomic number (Zeff) of graphite . | ||
|---|---|---|---|
| Lateral inserts . | PMMA . | Titanium . | Steel . |
| DS | 6.3 (0.4) | 6.3 (1.6) | 0.0 (0) |
| FKS | 6.7 (0.1) | 3.8 (2.1) | 1.7 (1.0) |
| DS-MAR | - | 2.9 (2.8) | 2.2 (2.5) |
| FKS-MAR | - | 6.5 (0.3) | 6.3 (0.2) |
| . | Effective atomic number (Zeff) of graphite . | ||
|---|---|---|---|
| Lateral inserts . | PMMA . | Titanium . | Steel . |
| DS | 6.3 (0.4) | 6.3 (1.6) | 0.0 (0) |
| FKS | 6.7 (0.1) | 3.8 (2.1) | 1.7 (1.0) |
| DS-MAR | - | 2.9 (2.8) | 2.2 (2.5) |
| FKS-MAR | - | 6.5 (0.3) | 6.3 (0.2) |
The mean (and standard deviation in parentheses) effective atomic number (Zeff) measured in the graphite insert at position 7 (Figure 1) in Zeff images obtained with Dual Source (DS) and fast kV-switching (FKS) DECT techniques, and the aforementioned combined by each vendor’s proprietary metal artefact reduction (MAR) algorithm (DS-MAR and FKS-MAR). The images were acquired with lateral inserts of PMMA, titanium or stainless steel. The measurements should be compared to the true atomic number of carbon (Z = 6).
| . | Effective atomic number (Zeff) of graphite . | ||
|---|---|---|---|
| Lateral inserts . | PMMA . | Titanium . | Steel . |
| DS | 6.3 (0.4) | 6.3 (1.6) | 0.0 (0) |
| FKS | 6.7 (0.1) | 3.8 (2.1) | 1.7 (1.0) |
| DS-MAR | - | 2.9 (2.8) | 2.2 (2.5) |
| FKS-MAR | - | 6.5 (0.3) | 6.3 (0.2) |
| . | Effective atomic number (Zeff) of graphite . | ||
|---|---|---|---|
| Lateral inserts . | PMMA . | Titanium . | Steel . |
| DS | 6.3 (0.4) | 6.3 (1.6) | 0.0 (0) |
| FKS | 6.7 (0.1) | 3.8 (2.1) | 1.7 (1.0) |
| DS-MAR | - | 2.9 (2.8) | 2.2 (2.5) |
| FKS-MAR | - | 6.5 (0.3) | 6.3 (0.2) |
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