Table 3.

Summary of simulation study using cine-MRI measurements as prostate intrafraction motion. T is the time between kV acquisitions. SI-axis root mean square error was negligible for all cases and hence was not included in the table.

simulation #	treatment protocol	kV acquisition schedule	treatment duration	right-left input noise	3D localization method	root mean square error (mm)			percentile of vector error (mm)
			(min)	σ (mm)		RL	AP	Vect.	90%	95%	99%
1	7 beam IMRT	1 per beam	7.5	0.50	shortest path	0.53	0.55	0.76	1.16	1.48	2.40
2	7 beam IMRT	1 per beam	7.5	0.00	shortest path	0.35	0.46	0.58	0.85	1.19	2.15
3	7 beam IMRT	1 per beam	7.5	0.25	shortest path	0.40	0.49	0.63	0.94	1.24	2.14
4	7 beam IMRT	1 per beam	7.5	0.75	shortest path	0.68	0.63	0.93	1.50	1.87	2.63
5	7 beam IMRT	1 per beam	7.5	0.50	shortest path + pre & post	0.49	0.54	0.73	1.13	1.40	2.27
6	7 beam IMRT	1 per beam	7.5	0.50	shortest path real-time	0.61	0.74	0.96	1.39	1.89	3.18
7	7 beam IMRT	1 per beam	7.5	0.50	av. of intersection with consecutive loc.	0.65	0.56	0.86	1.33	1.68	2.72
8	7 beam IMRT	1 per beam	7.5	0.50	intersection with preceding localization	0.71	0.78	1.06	1.57	2.04	3.64
9	7 beam IMRT	1 per beam	7.5	0.50	3D probability density	0.45	0.81	0.93	1.42	1.90	3.11
10	7 beam IMRT	1 per beam	1.9	0.50	shortest path	0.43	0.39	0.59	0.94	1.16	1.68
11	7 beam IMRT	1 per beam	3.8	0.50	shortest path	0.47	0.47	0.66	1.04	1.29	1.97
12	7 beam IMRT	1 per beam	15.1	0.50	shortest path	0.63	0.70	0.94	1.43	1.84	3.16
13	7 beam IMRT	2 per beam (pre and post MV delivery)	7.5	0.50	shortest path	0.53	0.53	0.75	1.17	1.46	2.25
14	7 beam IMRT	5 per beam (acq. between segments)	7.5	0.50	shortest path	0.55	0.55	0.78	1.21	1.50	2.37
15	7 beam IMRT	5 per beam + gantry rotation (T = 6s)	7.5	0.50	shortest path	0.53	0.53	0.74	1.18	1.45	2.13
16	7 beam IMRT	continuous (T = 6 s)	7.5	0.50	shortest path	0.51	0.51	0.72	1.13	1.39	2.03
17	7 beam IMRT	continuous (T = 30s)	7.5	0.50	shortest path	0.58	0.53	0.78	1.20	1.52	2.39
18	7 beam IMRT	continuous (T = 60s)	7.5	0.50	shortest path	0.55	0.55	0.79	1.23	1.56	2.45
19	5 beam IMRT	1 per beam	6.0	0.50	shortest path	0.51	0.54	0.74	1.16	1.46	2.26
20	VMAT	continuous (T = 6s)	4.0	0.50	shortest path	0.44	0.41	0.60	0.93	1.17	1.82