Radiation Dose Optimization in Interventional Cardiology: A Teaching Hospital Experience

Table 6

Quantitative image quality results using the CIRS model 901 30 cm phantom for standard NEMA measurements.

		Phase 1		Phase 2		Phase 3		Phase 4		Phase 5
		Fluoroscopy	Acquisitions	Fluoroscopy	Acquisitions	Fluoroscopy	Acquisitions	Fluoroscopy	Acquisitions	Fluoroscopy	Acquisitions
X-ray parameters	kVp	118	90	113	90	110	90	110	102	110	102
	Tube current (mA)	11.4	746	11	746	7.1	746	7.1	341	7.1	340
	Dose setting	Normal	Normal	Low	Normal	Low	Normal	Low	Normal	Low	Low
	Frame rate	7.5	15	7.5	15	5	15	5	10	5	10
	Added filteration	Al 2.0 + Cu 0.1	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 2.0 + Cu 0.1
Static image quality	Line pairs	1.6	1.8	1.4	1.8	1.2	1.8	1.2	1.6	1.2	1.6
	Iodine group 1	4	6	4	6	2	6	2	6	2	6
	Iodine group 2	0	0	0	0	0	0	0	0	0	0
	Iodine group 3	0	0	0	0	0	0	0	0	0	0
	Iodine group 4	0	0	0	0	0	0	0	0	0	0
	Air cylinders	4	4	4	4	4	4	4	4	4	4
	Aluminum cylinders	4	4	4	4	4	4	4	4	4	4
X-ray parameters	kVp	106	90	102	90	102	90	102	103	102	103
	Tube current (mA)	10	744	9	744	6.6	744	6.6	339	6.6	339
	Dose setting	Normal	Normal	Low	Normal	Low	Normal	Low	Normal	Low	Low
	Frame rate	7.5	15	7.5	15	5	15	5	10	5	10
	Added filteration	Al 2.0 + Cu 0.1	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 1.0 + Au 0.01	Al 1.5 + Cu 0.6	Al 2.0 + Cu 0.1
Temporal image quality	Moving wires	2	3	1	3	1	3	1	3	1	3