Radiation Oncology

Table 1 The scan time and reconstruction slice number at 6 groups of scan options on TomoTherapy MVCT image-guided radiotherapy system

From: Effects of megavoltage computed tomographic scan methodology on setup verification and adaptive dose calculation in helical TomoTherapy

Scan Options		Chest Phantom			Pelvic Phantom
Acquisition Pitch	Reconstruction Interval	Scan Length (mm)	Scan Time (s)	Reconstruction Slices	Scan Length (mm)	Scan Time (s)	Reconstruction Slices
Fine (4 mm/r^a)	1 mm	135	356	135	106	283	106
Fine (4 mm/r^a)	2 mm	137	361	69	106	281	53
Normal (8 mm/r)	2 mm	136	191	69	106	151	53
Normal (8 mm/r)	4 mm	134	186	34	107	151	27
Coarse (12 mm/r)	3 mm	139	136	47	108	108	36
Coarse (12 mm/r)	6 mm	137	131	23	114	111	19

^amm/r: the movement distance of treatment couch during one rotation of the beam gantry

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ISSN: 1748-717X

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