Unbiased Estimation of the Eyeball Volume Using the Cavalieri Principle on Computed Tomography Images

Acer N., Şahin B., Ucar T., Usanmaz M.

JOURNAL OF CRANIOFACIAL SURGERY, cilt.20, sa.1, ss.233-237, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1097/scs.0b013e3181843518
  • Dergi Adı: JOURNAL OF CRANIOFACIAL SURGERY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.233-237
  • Anahtar Kelimeler: Axial length, Cavalieri principle, computed tomography, eyeball volume, planimetry, point counting, stereology, MAGNETIC-RESONANCE IMAGES, TOTAL INTRACRANIAL VOLUME, OCULAR VOLUME, STEREOLOGY, MODEL, MRI, EYE
  • Ondokuz Mayıs Üniversitesi Adresli: Evet

Özet

The size of the eyeball has been the subject of a few studies. None of them used stereological methods to estimate the volume. In the current study, we estimated the volume of eyeball in normal men and women using the stereological methods. Eyeball volume (EV) was estimated using the Cavalieri principle as a combination of point-counting and planimetry techniques. We used computed tomography scans taken from 36 participants (15 men and 21 women) to estimate the EV The mean (SD) EV values obtained by planimetry method were 7.49 (0.79) and 7.06 (0.85) cm(3) in men and women, respectively. By using point-counting method, the mean (SD) values were 7.48 (0.85) and 7.21 (0.84) cm(3) in men and women, respectively. There was no statistically significant difference between the findings from the 2 methods (P > 0.05). A weak correlation was found between the axial length of eyeball and the EV estimated by point counting and planimetry (P < 0.05, r = 0.494 and r = 0.523, respectively). The findings of the current Study using the stereological methods Could provide data for the evaluation of normal and pathologic volumes of the eyeball.