Table 1 Nomenclature of surrogate parameters.

From: Abdominal subcutaneous fat quantification in obese patients from limited field-of-view MRI data

Quantity

Symbol

Definition

Reference

VASAT

ASAT volume measured from segmented ASAT areas of all slices between diaphragm and pelvic floor (typically 40–50 slices with effective spacing of 10.5 mm)

Length (thickness)

V~ASAT(AWFASIS)

ASAT volume estimated by length (thickness) of abdominal wall fat (AWFASIS) or hip girdle fat (HGFASIS) on single slice (at the level of the anterior superior iliac spine, ASIS)

V~ASAT(HGFASIS)

Partial area

V~ASAT(Ap-ASIS)

ASAT volume estimated from partial ASAT area on single slice within rectangular box bound by either centers of femoral heads (Ap-FH) or ASIS (Ap-ASIS)

V~ASAT(Ap-FH)

Partial volume

V~ASAT(Vp-ASIS)

ASAT volume estimated from partial ASAT areas of all slices within rectangular box bound by either centers of femoral heads (Vp-FH) or anterior superior iliac spines (Vp-ASIS)

V~ASAT(Vp-FH)

  1. AWF maximum paramedian distance between outer rectus sheath and skin surface, HGF maximum perpendicular distance between tangent to iliac plate and skin surface.
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