Related Experiment Video
Updated: Aug 5, 2026
Quantitative Optical Microscopy: Measurement of Cellular Biophysical Features with a Standard Optical Microscope
Published on: April 7, 2014
[Derivation of Conversion Formula of Image Quality Figure (IQFinv) Values by Old and New Analysis Software for
Akiko Nagami1, Rie Ishii2, Kaoru Kitagawa3
1Division of Clinical Radiology, Tottori University Hospital.
Purpose:
This study deals with the conversion of the image quality figure (IQFinv) values with CDMAM Analyser ver. 1 (old analysis software) used to analyse the images of CDMAM 3.4 phantom into the IQFinv values with a new analysis software, that is, CDMAM Analyser (ver. 2 and ver. 2.3), which is a software improved to be closer to human visual evaluation.
Methods:
The IQFinv values were calculated using four mammography units and three analysis software. The IQFinv values using the old and new software were compared.
Results:
The IQFinv values had no difference according to mammography units and beam quality. The conversion formula of IQFinv from CDMAM Analyser ver. 1 to CDMAM Analyser ver. 2 was derived. Furthermore, the conversion formula of IQFinv from CDMAM Analyser ver. 1 to CDMAM Analysis ver. 2.3 was also derived.
Conclusion:
Using each conversion formula, the IQFinv values using the old software can be converted to those using the new software. There was a slight difference between the IQFinv values using the new software.
