Merge eFilm DX Fluoroscopic Image Measurement Issue
eFilm Workstation/eFilm Lite versions 2.1, 2.1.2, 3.0, 3.1, 3.3.5, 3.4, 4.0, 4.01, 4.02, 4.03 and 4.1. Merge began shipping this product in 2007
** This issue will be encountered very rarely **
This issue happens for RF projection images [The 12 DICOM SOP classes below]. If user measures on RF image, “cal” (Calibration) is not displayed and measurement is not correct. The “cal” label is not displayed on the projection images after calibration is performed which should be present if the measurement is presented based on Pixel Spacing.
Measurements are incorrect because eFilm is using the imager pixel spacing DICOM tag, but it should be using the pixel spacing tag if the value for pixel spacing is present and is differing from imager pixel spacing tag.
Based on industry practice for projection images, if both the imager pixel spacing and pixel spacing attributes are present and differ, the pixel spacing attribute should be used and the "cal" (for calibrated) label should be displayed.
Use of this product may result in incorrect measurements on projection images of the SOP classes listed above and the imager pixel spacing DICOM tag and the pixel spacing tag. A user will likely be able to notice that the measurements are not as expected.
Potential health consequence for this issue includes delay in patient care and/or change in recommendation for treatment.
12 DICOM SOP Classes Effected:
(SOP Classes most likely to be encountered are in bold)
1.2.840.10008.5.1.4.18.104.22.168.1//Digital X-Ray - For Processing
1.2.840.10008.5.1.4.22.214.171.124.1//Digital Mammography X-Ray - For Processing
1.2.840.10008.5.1.4.126.96.36.199//Digital Intra-oral X-Ray - For Presentation
1.2.840.10008.5.1.4.188.8.131.52.1//Digital Intra-oral X-Ray - For Processing
1.2.840.10008.5.1.4.184.108.40.206.1//Enhanced XA Image Storage
1.2.840.10008.5.1.4.220.127.116.11//X-Ray Radiofluoroscopic Image Storage
1.2.840.10008.5.1.4.18.104.22.168.1//Enhanced XRF Image Storage
1.2.840.10008.5.1.4.1.1.7//Secondary Capture Image Storage
1.2.840.10008.5.1.4.22.214.171.124//Multi-frame Single Bit Secondary Capture
1.2.840.10008.5.1.4.126.96.36.199 //Multi-frame Grayscale Byte Capture
1.2.840.10008.5.1.4.188.8.131.52//Multi-frame Grayscale Word
1.2.840.10008.5.1.4.184.108.40.206//Multi-frame True Color Secondary Capture
If the user utilizes Antech Imaging Services, the online web viewer can be used perform calibrated measurements.