ACR screenshots

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Initial option User can select to do QA tests on the sample images or choose to do QA tests on their site images.	Visual contrast Because the contrast sensitivity varies for individual and also depends on the monitor setting, it is necessary to perform a contrast sensitivity test for the user on that particular monitor before the QA tests.	Contrast sensitivity image Contrast sensitivity image consists of pairs of vertical and horizontal pixels with lower intensity comparing to background. The contrast between the pixels and background decreases to zero. The value of contrast is given by the value of the dark pixel located at the lower left corner of the pair.
User visual sensitivity input User enters the contrast sensitivity in % value , the program will use this value to judge if a particular pixel intensity can be distinguished from the background by that user on that monitor.	HSCR test option User can do automatic or manual high contrast spatial resolution test.	PIU test option User can do automatic or manual QA PIU test.
Scanner field strength option ACR QA has different PIU passing criterion for 1.5T and 3T scanners. If the field strength tag is not included in the DICOM file, then user can choose the field strength manually. Otherwise, this process is done automatically.	LOCD test option Low contrast object detectability QA test at the moment has to be done by user observation for better accuracy.	Excel file The QA results are automatically saved to the folder of the image. The directory is displayed in the command window.
Log file The QA results are saved to a log file for immediate result feedback. The log file includes the results, criteria, pass/fail and QA time.

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Initial option

User can select to do QA tests on the sample images or choose to do QA tests on their site images.

Visual contrast

Because the contrast sensitivity varies for individual and also depends on the monitor setting, it is necessary to perform a contrast sensitivity test for the user on that particular monitor before the QA tests.

Contrast sensitivity image

Contrast sensitivity image consists of pairs of vertical and horizontal pixels with lower intensity comparing to background. The contrast between the pixels and background decreases to zero. The value of contrast is given by the value of the dark pixel located at the lower left corner of the pair.

User visual sensitivity input

User enters the contrast sensitivity in % value , the program will use this value to judge if a particular pixel intensity can be distinguished from the background by that user on that monitor.

HSCR test option

User can do automatic or manual high contrast spatial resolution test.

PIU test option

User can do automatic or manual QA PIU test.

Scanner field strength option

ACR QA has different PIU passing criterion for 1.5T and 3T scanners. If the field strength tag is not included in the DICOM file, then user can choose the field strength manually. Otherwise, this process is done automatically.

LOCD test option

Low contrast object detectability QA test at the moment has to be done by user observation for better accuracy.

Excel file

The QA results are automatically saved to the folder of the image. The directory is displayed in the command window.

Log file

The QA results are saved to a log file for immediate result feedback. The log file includes the results, criteria, pass/fail and QA time.

I'm a title. Click here to edit me.