Investigation of the slice sensitivity profile for step-and-shoot mode multi-slice computed tomography

2001 ◽  
Vol 28 (4) ◽  
pp. 491-500 ◽  
Author(s):  
Jiang Hsieh
Keyword(s):  
Computed Tomography ◽  
Step And Shoot ◽  
Slice Sensitivity Profile ◽  
Sensitivity Profile

scholarly journals Automated slice sensitivity profile measurement of the CT image of the AAPM CT performance phantom: Which stair object should be used?

2021 ◽  
Author(s):  
Nani Lasiyah ◽  
Choirul Anam ◽  
Eko Hidayanto ◽  
Geoff Dougherty
Keyword(s):  
Profile Measurement ◽  
Slice Thickness ◽  
Ct Image ◽  
Full Width ◽  
Half Maximum ◽  
Ct Scanner ◽  
Automated Measurements ◽  
Slice Sensitivity Profile ◽  
Sensitivity Profile ◽  
Improved Algorithm

Abstract Purpose: We used an improved algorithm to automatically measure the slice sensitivity profile (SSP) and its full-width at half maximum (FWHM) from all three stair objects within an image of the AAPM CT performance phantom.Methods: The phantom was scanned with a Philips Ingenuity 128-slice CT scanner using slice thicknesses of 1 mm and 5 mm. The three stair objects were named top #1, middle #2, and bottom #3. The software was able to measure the SSP and its FWHM form object #1, #2, #3, and all objects. The SSPs and FWHMs from each stair object were compared with manual measurements. Results: The FWHM values for a slice thickness of 1 mm were 1.3 ± 0.1 mm for all the stair objects. The FWHM values for a slice thickness of 5 mm were 5.2 ± 0.1 mm, 5.1 ± 0.3 mm, 5.2 ± 0.1 mm for the top, bottom, and middle stair objects, respectively. The results of manual measurements had the same trend as those of the automated measurements.Conclusion: The improved algorithm for measuring SSP and its FWHM from any stair object within the AAPM performance phantom was successfully developed. The SSPs and their FWHM values measured from every stair object were similar (p > 0.05).

scholarly journals Variations in slice sensitivity profile for various height settings in tomosynthesis imaging: Phantom study

2018 ◽  
Vol 53 ◽  
pp. 108-117 ◽  
Author(s):  
Taku Kuramoto ◽  
Junji Morishita ◽  
Toyoyuki Kato ◽  
Yasuhiko Nakamura
Keyword(s):  
Phantom Study ◽  
Slice Sensitivity Profile ◽  
Sensitivity Profile

Ramp test objects for slice sensitivity profile measurement in spiral CT.

1997 ◽  
Vol 70 (837) ◽  
pp. 942-945 ◽  
Author(s):  
A Mackie ◽  
G C Hart ◽  
J F Williams-Butt
Keyword(s):  
Spiral Ct ◽  
Profile Measurement ◽  
Ramp Test ◽  
Slice Sensitivity Profile ◽  
Test Objects ◽  
Sensitivity Profile

Optimization of slice sensitivity profile for radiographic tomosynthesis

2007 ◽  
Vol 34 (7) ◽  
pp. 2907-2916 ◽  
Author(s):  
Baojun Li ◽  
Gopal B. Avinash ◽  
Jeffrey W. Eberhard ◽  
Bernhard E. H. Claus
Keyword(s):  
Slice Sensitivity Profile ◽  
Sensitivity Profile
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