Aims and objectives
To analyze through abdominal US whether there is a correlation between interlobar arteries resistive index (RI) in kidneys and their main features such as longitudinal size,
parenchymal echogenicity and thickness.
Methods and materials
33 abdominal USs of different subjects (16 males,
17 females; age range 27-82,
mean 60.1 years),
were retrospectively analyzed.
A single over 10 years experienced radiologist performed all examinations.
Renal size (Fig.
parenchymal thickness (Fig.
its echogenicity (Fig.
1-2) and RI (Fig.
3) were assessed in both kidneys separately.
All patients had two kidneys,
so a total of 66 ones were considered.
Statistical analysis was performed with Pearson’s r,
unpaired t-test or Welch...
Fair correlation was found between renal size and parenchymal thickness in left kidney (r = 0.6896,
P-value < 0.0001) and in right one (r = 0.6621,
P-value < 0.0001).
No statistically significant correlation was observed between RI and kidney size or parenchymal thickness in neither of the two sides (all P-values > 0.52).
No significant difference was found between left and right kidney in size and parenchymal thickness (P-value = 0.9002 and 0.0925,
while it was found in RI...
Our study results showed that the only statistically significant correlation was between kidney parenchyma thickness and longitudinal size,
as it could be expected.
Difference in RI in kidneys,
even if it was statistically significant,
might be attributable to chance (i.e.
a false positive) or to an underlying pathology,
since vascular pathologies were not an exclusion criteria from the analysis.
No renal measurements difference was found between sexes or different parenchymal echogenicity of...
References and further reading:
- Boddi M,
The internist and the renal resistive index: truths and doubts.
Intern Emerg Med.
- Boddi M.
Renal Ultrasound (and Doppler Sonography) in Hypertension: An Update.
Adv Exp Med Biol.
- Geraci G,
Relationship between kidney findings and systemic vascular damage in elderly hypertensive patients without overt cardiovascular disease.
J Clin Hypertens (Greenwich)....