Study of Image Quality From CT Scanner Multi-Detector by using Americans College of Radiology (ACR) Phantom

Mulyadin,; Dewang, Syamsir; Abdullah, Bualkar; Tahir, Dahlang

doi:10.1088/1742-6596/979/1/012080

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…Measurements of the full width of half maximum (FWHM) of the SSP have been conducted using several commercial phantoms, including the Catphan, ASMR, and AAPM CT phantoms [11][12][13][14], while several studies developed speci c phantoms for their own systems [15][16][17][18]. Measurement of the FWHM of SSP using the AAPM CT performance phantom is focused on the stair objects, and a previous study reported that the discrepancy from the nominal slice thickness is about 19 % [19].…”

Section: Introductionmentioning

confidence: 99%

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

Lasiyah¹,

Anam²,

Hidayanto³

et al. 2021

Preprint

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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).

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Section: Introductionmentioning

confidence: 99%

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

Lasiyah¹,

Anam²,

Hidayanto³

et al. 2021

Preprint

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“…The SSP measurement can be performed using several types of phantoms [4]. The CatPhan and American College of Radiology (ACR) phantoms are commercial phantoms that are available for SSP measurements [11]- [14]. The measurement of SSP in the CatPhan phantom can be done manually by measuring the length of line of four wire ramps and multiplying it with tangent of 23 °.…”

mentioning

confidence: 99%

An evaluation of automated measurement of slice sensitivity profile of computed tomography image: field of view variations

Widyanti

Anam²,

Hidayanto³

et al. 2023

IJEECS

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This study aims to evaluate the automated measurement of slice sensitivity profile (SSP) on the American Association of Physicists in Medicine (AAPM) computed tomography (CT) performance phantom for variations of slice thickness and field of view (FOV). The AAPM CT performance phantom was scanned using a Philips MRC 880 CT Scanner for variations of slice thickness and FOV. The slice thickness values were 1, 3, and 5 mm. The FOV values were 240, 300, 340, 400, and 440 mm. The automated SSPs and their fullwidth at half maximums (FWHMs) were automatically measured from the middle stair object of the phantom. To validate the automated measurement results, the FWHM values of SSPs obtained were compared to those from manual measurements. The differences between FWHMs from automated measurements and set slice thicknesses are less than 0.3 mm, while the differences between FWHMs from automated and manual measurements are less than 0.2 mm. The results from automated measurements are closer to the set slice thickness than those from manual measurements. This automated SSP measurement provides high accuracy and precision for both the slice thickness and the FOV variations.

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Variation kVp and mAs on CT scan image quality using standard phantom

Irsal¹,

Nurbaiti²,

Mukhtar³

et al. 2020

AIP Conference Proceedings

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Study of Image Quality From CT Scanner Multi-Detector by using Americans College of Radiology (ACR) Phantom

Cited by 5 publications

References 4 publications

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

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

An evaluation of automated measurement of slice sensitivity profile of computed tomography image: field of view variations

Variation kVp and mAs on CT scan image quality using standard phantom

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