Table 2.

Patient information for selected examinations with median values and range (in parenthesis).

			Centers Selected for this Study
Examination	UCH		OAUTHC	TDC	NHA
Abdomen	Projection	AP		AP, PA	PA
	Male	3		3	1
	Female	0		1	1
	Age (yr)	46 (31–64)		56 (54–58)	58 (58–58)
	Weight (kg)	62 (62–74)		73 (69–77)	80 (80–80)
	$\text{BMI}({\text{kgm}}^{-2})$	23 (23–25)		25 (23–26)	24 (24–24)
Chest	Projection	PA	PA	PA	PA, LAT
	Male	23	54	51	49
	Female	23	24	24	25
	Age (yr)	33 (18–82)	23 (18–85)	22 (18–90)	23 (18–60)
	Weight (kg)	67 (60–78)	64 (60–76)	65 (60–80)	64 (60–80)
	$\text{BMI}({\text{kgm}}^{-2})$	24 (23–26)	23 (23–26)	24 (23–26)	23 (22–26)
LSI	Projection	AP, LAT		AP, LAT	AP. LAT
	Male	4		1	1
	Female	12		2	2
	Age (yr)	48 (34–71)		50 (22–51)	40 (40–40)
	Weight (kg)	62 (60–75)		69 (63–69)	80 (80–80)
	$\text{BMI}({\text{kgm}}^{-2})$	24 (23–26)		23 (23–23)	24 (21–26)
Pelvis	Projection	AP, LAT		AP	AP
	Male	1		1	1
	Female	3		2	1
	Age (yr)	49 (30–57)		34 (22–60)	55 (50–60)
	Weight (kg)	71 (65–75)		67 (63–68)	63 (62–64)
	$\text{BMI}({\text{kgm}}^{-2})$	24 (23–25)		26 (23–26)	23 (22–23)
PNS	Projection	PA, LAT		PA
	Male	8		1
	Female	10
	Age (yr)	31 (18–66)		22 (22–22)
	Weight (kg)	69 (60–75)		68 (68–68)
	$\text{BMI}({\text{kgm}}^{-2})$	24 (23–25)		23 (23–23)
Skull	Projection	AP, LAT			AP, LAT
	Male	4
	Female				2
	Age (yr)	47 (46–47)			46 (46–46)
	Weight (kg)	70 (62–77)			77 (77–77)
	$\text{BMI}({\text{kgm}}^{-2})$	25 (24–26)			21 (20–22)

Notes: $\text{LSI}=\hspace{0.17em}\text{lumbo}\hspace{0.17em}\text{sacral}\hspace{0.17em}\text{joint}$; $\text{PNS}\hspace{0.17em}=\hspace{0.17em}\text{paranasal}\hspace{0.17em}\text{sinus}$; $\text{AP}\hspace{0.17em}=\hspace{0.17em}\text{anteroposterior}$; $\text{LAT}\hspace{0.17em}=\hspace{0.17em}\text{lateral}$.