QC Report

Weekly MRI Equipment Quality Control for Large ACR Phantom

Quality control (QC) of the human MRI scanners is essential to ensure optimalimage acquisition. In order to acieve this purpose, our center performs the phantom QC test weekly according to the American College of Radiology (ACR) MRI accreditation procedure. Several important assessments of MR image quality are included as follows: geometric accuracy, high-contrast resolution, slice thickness accuracy, slice position accuracy, image intensity uniformity, percent signal ghosting, and low-contrast object detectability. In addition, signal-to-noise ratio and central frequency are monitored as well. Users are welcome/encouraged to check the QC results of the scanner before performing his/her studies.

ACR large QC phantom

Total 11 axial images are used to assess MRI quality.

MRI Facility Name: FIBRE Siemen Prisma 3.0 T

Current Status:   PASS

ACR MRI QC Scan Parameters

Study Sagittal Locator Axial T1 Axial T2 double-echo
Pulse sequence Spin echo Spin echo Spin echo
TR (ms) 200 500 2000
TE (ms) 20 20 20/80
FOV (cm) 25 25 25
Slices 1 11 11
Slice thinkness(gap) (mm) 20(-) 5(5) 5(5)
NEX 1 1 1
Matrix 256×256 256×256 256×256
Acquision time (min:sec) 0:56 2:16 8:56

Localizer image

Geometric distortion measurement:

Example images acquired using ACR T1 protocol:

Artifact Evaluation:

Example images acquired using ACR T2 protocol

Artifact Evaluation:

Weekly QC Results:

Date Table Position Center Freq (MHz) TX Gain (V) Geometric Accuracy Measurements (Ax. Slice #5 Diameter) High-Contrast Spatial Resolution (Slice 1-Highest Resolved) Low-Contrast Detectability Artifact Evaluation Tested By Note
22-Nov-2019 123.256827 220.9
15-Nov-2019 123.256739 220.4
08-Nov-2019 123.256575 219.9
27-Oct-2019 123.257297 219.1
19-Oct-2019 123.25769 217.8
11-Oct-2019 123.25815 217.3
04-Oct-2019 123.257529 217.3
27-Sep-2019 123.257488 218.1
20-Sep-2019 123.257298 220.1
13-Sep-2019 123.257320 217.5
06-Sep-2019 123.257664 219.7
30-Aug-2019 123.2567550 222.9
22-Aug-2019 123.2567584 218.9
22-Aug-2019 123.2567584 218.9
18-July-2019 123.2567492 218.9
12-July-2019 123.2567545 225.3
21-June-2019 123.257348 221.3
13-June-2019 123.256688 218.7
6-June-2019 123.256609 219.8
31-May-2019 123.2567509 219.7
24-May-2019 123.256872 219.8
17-May-2019 123.257604 219.9
03-May-2019 123.257613 221.3
24-Apr-2019 123.257613 221.4
19-Apr-2019 123.257482 220.0
12-Apr-2019 123.257325 219.1
28-Mar-2019 123.257334 220.8
22-Mar-2019 123.256819 221.1
14-Mar-2019 123.257322 218.9
28-Feb-2019 123.257447 218.2
8-Mar-2019 123.257455 210.4
22-Feb-2019 123.257455 210.4
14-Feb-2019 123.257329 219.5
01-Feb-2019 123.257569 217
24-Jan-2019 123.257677 219.9
18-Jan-2019 123.261826 216.9
10-Jan-2019 123.256881 220.7
03-Jan-2019 123.257512 209.7

2018 Summary:

Date Table Position Center Freq (MHz) TX Gain (V) Geometric Accuracy Measurements (Ax. Slice #5 Diameter) High-Contrast Spatial Resolution (Slice 1-Highest Resolved) Low-Contrast Detectability Artifact Evaluation Tested By Note
20-Dec-2018 123.257337 221.0 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
14-Dec-2018 123.256678 217.2 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
06-Dec-2018 123.256694 223.7 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
30-Nov-2018 123.257517 220.5 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
20-Nov-2018 123.257504 221.6 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
16-Nov-2018 123.257530 219.1 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
07-Nov-2018 123.257638 223.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
02-Nov-2018 123.257344 221.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
23-Oct-2018 123.257744 220.6 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
19-Oct-2018 123.257530 223.1 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
11-Oct-2018 123.257382 220.5 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
05-Oct-2018 123.257441 227.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
26-Sep-2018 123.257431 222.6 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
20-Sep-2018 123.257618 228.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
14-Sep-2018 123.257667 222.9 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
07-Sep-2018 123.257584 226.2 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
30-Aug-2018 123.257837 224 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
24-Aug-2018 123.257718 223 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
16-Aug-2018 123.257727 224.7 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
10-Aug-2018 123.257493 229.0 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
04-Aug-2018 123.257688 220.6 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
27-July-2018 123.257686 222.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
20-July-2018 123.257528 227.4 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
12-July-2018 123.257748 231.3(please use Bioclinica data for this test) T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
2-July-2018 123.257726 222(please use Bioclinica data for this test) T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
8-Jun-2018 123.257582 225.3 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
31-May-2018 123.257645 225.4 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
25-May-2018 123.257414 222.7 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
17-May-2018 123.257406 220.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
11-May-2018 123.257414 218.5 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
03-May-2018 123.257614 220.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
30-Apr-2018 123.257420 221.7 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
20-Apr-2018 123.257512 220.7 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
13-Apr-2018 123.257624 220.1 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
04-Apr-2018 123.257418 220.7 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
27-Mar-2018 123.257561 217.4 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
21-Mar-2018 123.257422 220.0 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
15-Mar-2018 123.257714 221.8 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
06-Mar-2018 123.257632 220 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
01-Mar-2018 123.257417 216.6 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
22-Feb-2018 123.257731 222.4 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain Re-test
14-Feb-2018 123.256679 221.2 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain Re-test
13-Feb-2018 123.256553 220.9 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain Re-test
12-Feb-2018 123.257605 217.39 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain User reports bad T1s/BOLD image quality.
08-Feb-2018 123.2575 214.93 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
02-Feb-2018 123.2574 214.03 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
22-Jan-2018 123.2575 214.27 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
16-Jan-2018 123.2574 215.21 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
8-JAN-2018 123.2573 216.47 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
5-JAN-2018 123.2574 214.93 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
18-Dec-2017 123.2575 217.62 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
11-Dec-2017 123.2574 215.90 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
21-Nov-2017 123.2575 216.35 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
23-Oct-2017 123.2574 214.98 T1: Pass; T2: Fail T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A
19-Oct-2017 123.2576 216.43 T1: Pass; T2: Pass T1 UL: Pass; T1 LR: Pass; T2 UL: Pass; T2 LR: Pass T1: Pass; T2: Pass None R. Tain N/A