Visual and Quantitative Analysis Methods of Respiratory Patterns for Respiratory Gated PET/CT

Table 2

Four categories of respiratory patterns of 139 patients based on visual analysis.

		Amplitude
		Regular		Irregular
Period	Regular	A ()		C ()
		Drift yes	Drift no	Drift yes	Drift no
		0	38	39	15
Period	Irregular	B ()		D ()
		Drift yes	Drift no	Drift yes	Drift no
		4	19	24	0