ACR phantom ACR CT ACCREDITATION PHANTOM 2 GE

ACR CT ACCREDITATION PHANTOM 2 GE Title or job number 9/25/2021

ACR CT ACCREDITATION PHANTOM 3 GE Title or job number 9/25/2021

ACR Phantom test item Spatial Resolution (High-Contrast Resolution) Contrast Resolution (Low-Contrast Resolution) Slice Thickness

ACR Phantom (4 module) 5 GE Title or job number 9/25/2021

ACR Phantom (Module 1) 6 GE Title or job number 9/25/2021

ACR Phantom (Module 2) 7 GE Title or job number 9/25/2021

ACR Phantom (Module 3) 8 GE Title or job number 9/25/2021

ACR Phantom (Module 4) 9 GE Title or job number 9/25/2021

ACR Phantom (Position) 10 GE Title or job number 9/25/2021

ACR Phantom (Position) 11 GE Title or job number 9/25/2021

ACR Phantom 12 GE Title or job number 9/25/2021

ACR Phantom (Module 1) CT# Linearity 13 GE Title or job number 9/25/2021

ACR Phantom (Module 1) Thickness (Upper + Lower line)/2 14 GE Title or job

ACR Phantom (Module 2) 15 GE Title or job number 9/25/2021

ACR Phantom (Module 2) Low Contrast Criteria Best image WW = 100 & WL

ACR Phantom (Module 2) Low Contrast Criteria CNR = |A-B|/SDB CNR>1 adult head &

ACR Phantom (Module 3) Uniformit y ROI size: 400 mm Center , Upper, Lower,

ACR Phantom (Module 4) 19 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) Spatial frequency 20 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) Spatial frequency 21 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) A digital radiographic imaging system has a spatial resolution

SPATIAL RESOLUTION (resolution in space) Spatial frequency 23 GE Title or job number 9/25/2021

Slides: 23

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ACR phantom

ACR CT ACCREDITATION PHANTOM 2 GE Title or job number 9/25/2021

ACR CT ACCREDITATION PHANTOM 3 GE Title or job number 9/25/2021

ACR Phantom test item Spatial Resolution (High-Contrast Resolution) Contrast Resolution (Low-Contrast Resolution) Slice Thickness Accuracy Laser Light Accuracy Noise and Uniformity Linearity 4 GE Title or job number 9/25/2021

ACR Phantom (4 module) 5 GE Title or job number 9/25/2021

ACR Phantom (Module 1) 6 GE Title or job number 9/25/2021

ACR Phantom (Module 2) 7 GE Title or job number 9/25/2021

ACR Phantom (Module 3) 8 GE Title or job number 9/25/2021

ACR Phantom (Module 4) 9 GE Title or job number 9/25/2021

ACR Phantom (Position) 10 GE Title or job number 9/25/2021

ACR Phantom (Position) 11 GE Title or job number 9/25/2021

ACR Phantom 12 GE Title or job number 9/25/2021

ACR Phantom (Module 1) CT# Linearity 13 GE Title or job number 9/25/2021

ACR Phantom (Module 1) Thickness (Upper + Lower line)/2 14 GE Title or job number 9/25/2021

ACR Phantom (Module 2) 15 GE Title or job number 9/25/2021

ACR Phantom (Module 2) Low Contrast Criteria Best image WW = 100 & WL = 100 four cylinders for each diameters: 2, 3, 4, 5, and 6 mm 16 GE Title or job number 9/25/2021

ACR Phantom (Module 2) Low Contrast Criteria CNR = |A-B|/SDB CNR>1 adult head & abdomen 17 GE Title or job number 9/25/2021

ACR Phantom (Module 3) Uniformit y ROI size: 400 mm Center , Upper, Lower, Left, Right Center to Upper, Lower, Left, Right (<± 5 HU ) 18 GE Title or job number 9/25/2021

ACR Phantom (Module 4) 19 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) Spatial frequency 20 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) Spatial frequency 21 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) A digital radiographic imaging system has a spatial resolution of 3. 5 lp/mm. How small an object can it resolve? 3. 5 lp/mm = 7 objects in 1 mm, or 7/mm 1/7 mm = 0. 143 mm = 143 μm Spatial frequency 22 GE Title or job number 9/25/2021

SPATIAL RESOLUTION (resolution in space) Spatial frequency 23 GE Title or job number 9/25/2021