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acr phantom  (Siemens AG)
90
Siemens AG acr phantom
Phantom experiment to compare Siemens and Philips image quality. Two <t>ACR</t> phantoms (one in the Siemens site and the other in the Philips site) were used. Same coils and protocols as the human experiments were used here. Both 3D MERGE and SNAP have visually reasonable image qualities on both Philips and <t>Siemens</t> <t>scanners,</t> although they exhibit different uniformity patterns. SNR is measured in homogeneous ROIs on both left and right side for each image, defined by dividing the ROI-averaged signal intensity by the standard deviation. Results show that SNR (averaging left and right) is similar in both sequences (Philips vs. Siemens): 21.4 vs. 21.8 in 3D MERGE; 22.75 vs. 20.6 in SNAP. 3D, 3 dimensional; ACR, American College of Radiology; MERGE, motion-sensitized driven equilibrium prepared rapid gradient echo; ROI, region of interest; SNAP, simultaneous non-contrast angiography and plaque; SNR, signal to noise ratio.
Acr Phantom, supplied by Siemens AG, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr phantom/product/Siemens AG
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acr phantom - by Bioz Stars, 2026-03
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acr ct qc phantom: module 3 – uniformity  (Siemens AG)
90
Siemens AG acr ct qc phantom: module 3 – uniformity
Phantom experiment to compare Siemens and Philips image quality. Two <t>ACR</t> phantoms (one in the Siemens site and the other in the Philips site) were used. Same coils and protocols as the human experiments were used here. Both 3D MERGE and SNAP have visually reasonable image qualities on both Philips and <t>Siemens</t> <t>scanners,</t> although they exhibit different uniformity patterns. SNR is measured in homogeneous ROIs on both left and right side for each image, defined by dividing the ROI-averaged signal intensity by the standard deviation. Results show that SNR (averaging left and right) is similar in both sequences (Philips vs. Siemens): 21.4 vs. 21.8 in 3D MERGE; 22.75 vs. 20.6 in SNAP. 3D, 3 dimensional; ACR, American College of Radiology; MERGE, motion-sensitized driven equilibrium prepared rapid gradient echo; ROI, region of interest; SNAP, simultaneous non-contrast angiography and plaque; SNR, signal to noise ratio.
Acr Ct Qc Phantom: Module 3 – Uniformity, supplied by Siemens AG, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr ct qc phantom: module 3 – uniformity/product/Siemens AG
Average 90 stars, based on 1 article reviews
acr ct qc phantom: module 3 – uniformity - by Bioz Stars, 2026-03
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acr dm phantom analysis software  (MathWorks Inc)
90
MathWorks Inc acr dm phantom analysis software
(a) an example of the <t>ACR</t> <t>DM</t> phantom. (b) Schematic view of wax block showing the included structures consist of six fibers, six specks groups, and six masses, along with their respective sizes.
Acr Dm Phantom Analysis Software, supplied by MathWorks Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr dm phantom analysis software/product/MathWorks Inc
Average 90 stars, based on 1 article reviews
acr dm phantom analysis software - by Bioz Stars, 2026-03
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siemens/alpha pcd-ct/acr phantom  (Siemens AG)
90
Siemens AG siemens/alpha pcd-ct/acr phantom
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Siemens/Alpha Pcd Ct/Acr Phantom, supplied by Siemens AG, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/siemens/alpha pcd-ct/acr phantom/product/Siemens AG
Average 90 stars, based on 1 article reviews
siemens/alpha pcd-ct/acr phantom - by Bioz Stars, 2026-03
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acr large mri phantom  (Canon inc)
90
Canon inc acr large mri phantom
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Acr Large Mri Phantom, supplied by Canon inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr large mri phantom/product/Canon inc
Average 90 stars, based on 1 article reviews
acr large mri phantom - by Bioz Stars, 2026-03
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acr-certified ct phantom (model 464, gammex-rmi, middleton, wi, usa)  (GAMMEX RMI GmbH)
90
GAMMEX RMI GmbH acr-certified ct phantom (model 464, gammex-rmi, middleton, wi, usa)
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Acr Certified Ct Phantom (Model 464, Gammex Rmi, Middleton, Wi, Usa), supplied by GAMMEX RMI GmbH, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr-certified ct phantom (model 464, gammex-rmi, middleton, wi, usa)/product/GAMMEX RMI GmbH
Average 90 stars, based on 1 article reviews
acr-certified ct phantom (model 464, gammex-rmi, middleton, wi, usa) - by Bioz Stars, 2026-03
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acr ct accreditation phantom gammex 464  (Gammex Inc)
90
Gammex Inc acr ct accreditation phantom gammex 464
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Acr Ct Accreditation Phantom Gammex 464, supplied by Gammex Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr ct accreditation phantom gammex 464/product/Gammex Inc
Average 90 stars, based on 1 article reviews
acr ct accreditation phantom gammex 464 - by Bioz Stars, 2026-03
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acr ct 464 phantom  (Gammex Inc)
90
Gammex Inc acr ct 464 phantom
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Acr Ct 464 Phantom, supplied by Gammex Inc, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr ct 464 phantom/product/Gammex Inc
Average 90 stars, based on 1 article reviews
acr ct 464 phantom - by Bioz Stars, 2026-03
90/100 stars
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acr phantom  (Johns Hopkins HealthCare)
90
Johns Hopkins HealthCare acr phantom
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Acr Phantom, supplied by Johns Hopkins HealthCare, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr phantom/product/Johns Hopkins HealthCare
Average 90 stars, based on 1 article reviews
acr phantom - by Bioz Stars, 2026-03
90/100 stars
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acr mri qc phantom  (Philips Healthcare)
90
Philips Healthcare acr mri qc phantom
User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the <t>ACR</t> phantom. (b) Image data query from CTPro database. The images were selected with Siemens <t>Alpha</t> <t>PCD-CT,</t> ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).
Acr Mri Qc Phantom, supplied by Philips Healthcare, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/result/acr mri qc phantom/product/Philips Healthcare
Average 90 stars, based on 1 article reviews
acr mri qc phantom - by Bioz Stars, 2026-03
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Image Search Results


Phantom experiment to compare Siemens and Philips image quality. Two ACR phantoms (one in the Siemens site and the other in the Philips site) were used. Same coils and protocols as the human experiments were used here. Both 3D MERGE and SNAP have visually reasonable image qualities on both Philips and Siemens scanners, although they exhibit different uniformity patterns. SNR is measured in homogeneous ROIs on both left and right side for each image, defined by dividing the ROI-averaged signal intensity by the standard deviation. Results show that SNR (averaging left and right) is similar in both sequences (Philips vs. Siemens): 21.4 vs. 21.8 in 3D MERGE; 22.75 vs. 20.6 in SNAP. 3D, 3 dimensional; ACR, American College of Radiology; MERGE, motion-sensitized driven equilibrium prepared rapid gradient echo; ROI, region of interest; SNAP, simultaneous non-contrast angiography and plaque; SNR, signal to noise ratio.

Journal: Quantitative Imaging in Medicine and Surgery

Article Title: Qualitative and quantitative reproducibility of 3D MERGE and SNAP sequences for carotid vessel wall imaging across Siemens and Philips 3T scanners

doi: 10.21037/qims-24-2124

Figure Lengend Snippet: Phantom experiment to compare Siemens and Philips image quality. Two ACR phantoms (one in the Siemens site and the other in the Philips site) were used. Same coils and protocols as the human experiments were used here. Both 3D MERGE and SNAP have visually reasonable image qualities on both Philips and Siemens scanners, although they exhibit different uniformity patterns. SNR is measured in homogeneous ROIs on both left and right side for each image, defined by dividing the ROI-averaged signal intensity by the standard deviation. Results show that SNR (averaging left and right) is similar in both sequences (Philips vs. Siemens): 21.4 vs. 21.8 in 3D MERGE; 22.75 vs. 20.6 in SNAP. 3D, 3 dimensional; ACR, American College of Radiology; MERGE, motion-sensitized driven equilibrium prepared rapid gradient echo; ROI, region of interest; SNAP, simultaneous non-contrast angiography and plaque; SNR, signal to noise ratio.

Article Snippet: In addition to human data acquisition, we conducted a phantom experiment to compare the capability of the setups in Siemens and Philips scanners, using ACR phantom and same coils and protocols as the human experiments.

Techniques: Standard Deviation

(a) an example of the ACR DM phantom. (b) Schematic view of wax block showing the included structures consist of six fibers, six specks groups, and six masses, along with their respective sizes.

Journal: Journal of Applied Clinical Medical Physics

Article Title: Automated quality control analysis for American College of Radiology (ACR) digital mammography (DM) phantom images

doi: 10.1002/acm2.14548

Figure Lengend Snippet: (a) an example of the ACR DM phantom. (b) Schematic view of wax block showing the included structures consist of six fibers, six specks groups, and six masses, along with their respective sizes.

Article Snippet: The ACR DM phantom analysis software was developed using MATLAB (The MathWorks Inc., Natick, Massachusetts, USA), to fully automate the extraction and analysis of several regions of interest (ROIs) from the phantom images.

Techniques: Blocking Assay

The acquisition factors for the ACR DM phantom images used in this study for Fujifilm and Hologic Systems. Note: kVp ranges between 28 and 29 kVp.

Journal: Journal of Applied Clinical Medical Physics

Article Title: Automated quality control analysis for American College of Radiology (ACR) digital mammography (DM) phantom images

doi: 10.1002/acm2.14548

Figure Lengend Snippet: The acquisition factors for the ACR DM phantom images used in this study for Fujifilm and Hologic Systems. Note: kVp ranges between 28 and 29 kVp.

Article Snippet: The ACR DM phantom analysis software was developed using MATLAB (The MathWorks Inc., Natick, Massachusetts, USA), to fully automate the extraction and analysis of several regions of interest (ROIs) from the phantom images.

Techniques:

User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the ACR phantom. (b) Image data query from CTPro database. The images were selected with Siemens Alpha PCD-CT, ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).

Journal: Proceedings of SPIE--the International Society for Optical Engineering

Article Title: Automated Web-based Software for CT Quality Control Testing of Low-contrast Detectability using Model Observers

doi: 10.1117/12.3008777

Figure Lengend Snippet: User interface of the CHO calculation module and database on the CTPro website. (a) The user interface of the CHO module displays the images and key DICOM information and calculates the index of detectability (d’) and area under the ROC curve (AUC) for the 6-, 5-, and 4-mm low-contrast objects of the ACR phantom. (b) Image data query from CTPro database. The images were selected with Siemens Alpha PCD-CT, ACR phantom, CTDIvol at 6 mGy, 144x0.4 mm collimation (SR scan mode), T1 for spectral information (T3D reconstruction mode), and with an IR reconstruction (QIR, Br44-3 kernel).

Article Snippet: The results of d’ and AUC for the low-contrast objects at contrast of 6 HU are obtained after CHO calculation, which can be exported for further use. shows database query result with Siemens/Alpha PCD-CT/ACR phantom from the web-based CTPro platform on Python WebApp Server.

Techniques:

(a) Example images of the ACR low-contrast module from the standard resolution (SR, 144x0.4 mm collimation) and ultra-high-resolution (UHR, 120x0.2 mm) scans modes combined with threshold-low (T3D) and virtual-monoenergetic-image at 70 keV reconstruction modes on PCD-CT at 12 mGy with IR (Br44-3) reconstructions, along with the EID-CT images at matched dose and reconstruction methods. Ensemble average image of EID-CT with IR and PCD-CT UHR-T3D with IR are displayed with the signal (red) and background ROIs (blue and yellow). (b) d’ for the four scan-reconstruction modes on PCD-CT (SR-T3D, SR-70keV, UHR-T3D, and UHR-70keV) and EID-CT with both FBP and IR reconstructions. The d’ distribution came from 10 independent d’ measurements with repositioning of the ACR phantom.

Journal: Proceedings of SPIE--the International Society for Optical Engineering

Article Title: Automated Web-based Software for CT Quality Control Testing of Low-contrast Detectability using Model Observers

doi: 10.1117/12.3008777

Figure Lengend Snippet: (a) Example images of the ACR low-contrast module from the standard resolution (SR, 144x0.4 mm collimation) and ultra-high-resolution (UHR, 120x0.2 mm) scans modes combined with threshold-low (T3D) and virtual-monoenergetic-image at 70 keV reconstruction modes on PCD-CT at 12 mGy with IR (Br44-3) reconstructions, along with the EID-CT images at matched dose and reconstruction methods. Ensemble average image of EID-CT with IR and PCD-CT UHR-T3D with IR are displayed with the signal (red) and background ROIs (blue and yellow). (b) d’ for the four scan-reconstruction modes on PCD-CT (SR-T3D, SR-70keV, UHR-T3D, and UHR-70keV) and EID-CT with both FBP and IR reconstructions. The d’ distribution came from 10 independent d’ measurements with repositioning of the ACR phantom.

Article Snippet: The results of d’ and AUC for the low-contrast objects at contrast of 6 HU are obtained after CHO calculation, which can be exported for further use. shows database query result with Siemens/Alpha PCD-CT/ACR phantom from the web-based CTPro platform on Python WebApp Server.

Techniques: