Assessment of maxillary sinus volume for the sinus lift operation by three-dimensional magnetic resonance imaging

C F Gray, R T Staff, T W Redpath, G Needham, N M P Renny

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18 Citations (Scopus)


Objectives: To calculate sinus and bone graft volumes and vertical bone heights from sequential magnetic resonance imaging (MRI) examinations in patients undergoing a sinus lift operation.

Methods: MRI scans were obtained pre-operatively and at 10 days and 10 weeks post-operatively, using a 0.95 tesla MRI scanner and a three-dimensional (3D) magnetisation prepared, rapid acquisition gradient-echo (MP-RAGE) sequence.

Results: Estimates of the bone graft volumes required for a desired vertical bone height were made from the pre-operative MRI scan. Measurements of the graft volumes and bone heights actually achieved were made from the post-operative scans. The MRI appearance of the graft changed between the 10 day and 10 week scans.

Conclusions: We have proposed a technique which has the potential to give the surgeon an estimate of the optimum volume of graft for the sinus lift operation from the pre-operative MRI scan alone and demonstrated its application in a Single patient. Changes in the sequential MRI appearance of the graft are consistent with replacement of fluid by a matrix of trabecular bone.

Original languageEnglish
Pages (from-to)154-158
Number of pages5
JournalDento Maxillo Facial Radiology
Publication statusPublished - 2000


  • magnetic resonance imaging
  • maxillary sinus
  • bone transplantation
  • dental implants

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