title: Predictors of kidney dimensions measured by multi-detector computed tomography (MDCT) in 930 middle-aged and elderly patients.
abstract: OBJECTIVE
  A few studies investigated renal size using computed tomography (CT) in middle-aged and elderly patients while taking renal function into account. Thus, we aimed to assess kidney dimensions and their predictors in patients without known renal disease by multi-detector computed tomography (MDCT).
  
  
  METHODS
  This is a 6-month-long prospective observational study. Estimated glomerular filtration rate (eGFR) was calculated with Cockcroft-Gault (CG) and modification of diet in renal disease (MDRD) formulas. Pole-to-pole kidney length (R1) was determined from coronal and sagittal oblique images. Kidney length (R2), width (R3), and parenchymal thickness were measured in axial slices.
  
  
  RESULTS
  The data of the 930 patients were included in this study. CG-eGFR was more closely correlated with R1, R2, and R3 than MDRD-eGFR. CG-eGFR, female gender, and presence of diabetes mellitus were independent predictors of R1 size in logistic regression analyses.
  
  
  CONCLUSIONS
  Kidney sizes diminish with advancing age. CG-eGFR shows a better correlation with kidney dimensions compared with MDRD. Overall, age was a stronger determinant of eGFR than renal dimensions.
authors: Department of Radiology, Meram School of Medicine, Selcuk University, Meram, Konya, Turkey. orhan.ozbek@gmail.com
authors: Orhan
authors: O
authors: Ozbek
authors: Yalcin
authors: Y
authors: Solak
authors: Ibrahim
authors: I
authors: Guler
authors: Huseyin
authors: H
authors: Ozbiner
authors: Seda
authors: S
authors: Ozbek
authors: Kultigin
authors: K
authors: Turkmen
authors: Alaaddin
authors: A
authors: Nayman
authors: Zeynep
authors: Z
authors: Biyik
authors: Cigdem
authors: C
authors: Samur
authors: Suleyman
authors: S
authors: Turk
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005919:Glomerular Filtration Rate; D006801:Humans; D007668:Kidney / Q000033:anatomy & histology* / Q000000981:diagnostic imaging* / Q000502:physiology; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D009929:Organ Size; D011446:Prospective Studies