UT1 Renal length/L1–L3 [radiography] Renal parenchymal area/L1–L3 [radiography] Renal parenchymal thickness/L1–L3 [radiography]
A large number of papers have been published concerning the normal radiological correlation between renal length and a lumbar spine segment (Currarino 1965; Eklöf and Ringertz 1976a, b; Klare et al. 1980). To use the lumbar segment L1–L3 including the intervertebral spaces as reference has the advantage that this segment is always seen on the IVP film. It also means that magnification factors are irrelevant as all structures measured are located in the same plane.
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