Table 5.

Evolution of parameters related to imaging quality.

	Status
	Stability			Compliance rate decrease			Compliance rate increase			Stationary			Total
Parameters	n	%		n	%		n	%		n	%		n	%
Monthly imaging quality testing	8	15.4		5	10.0		7	13.5		29	56		49	94.2*
High-contrast details (microcalcifications)	22	42.3		18	34.6		2	3.8		9	17.3		51	98.1*
Low-contrast circular details (disks)	12	23.1		12	23.1		11	21.2		16	30.8		51	98.1*
Low-contrast linear details (fibers)	47	90.4		1	1.9		0	0		3	5.8		51	98.1*
Tumor masses visualization	28	53.8		3	5.8		12	23.1		8	15.4		51	98.1*
Background optical density	23	44.2		11	21.2		9	17.3		8	15.4		51	98.1*
Contrast index	22	42.3		11	21.2		10	19.2		7	13.5		50	96.2*
Absence of imaging artifacts	31	59.6		2	3.8		16	30.8		2	3.8		51	98.1*

^* The difference for 100% corresponds to the absence of data in the inspection reports.