Table 6. Summarized the reference range values of each calculated heart size parameter observed on CT in clinical healthy cats.

Parameters	Gr. of cats
	Gr. A	Gr. B
THW	0.86 ± 0.06	0.90 ± 0.10
	(0.83–0.96)	(0.83–0.92)
RHA	0.42 ± 0.05	0.34 ± 0.05
	(0.38–0.45)	(0.31–0.37)
tVHS	11.34 ± 0.99	10.25 ± 1.22
	(9.70–11.52)	(9.53–11.88)
ctVHS	7.41 ± 0.44	7.42 ± 0.46
	(7.05–7.58)	(7.13–7.72)

Data are expressed as mean ± SD and 95% confidence interval. Gr.A: ≤18 months; Gr. B: >18 months.