Dentomaxillofacial Radiology, Vol 29, Issue 3 154-158, Copyright © 2000 by British Institute of Radiology

ARTICLES

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 and N. M. Renny
Department of Bio-Medical Physics and Bio-Engineering, University of Aberdeen, Foresterhill, Aberdeen, Scotland, UK.

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.

This article has been cited by other articles:

				H Ozyuvaci, I Aktas, K Yerit, K Aydin, and E Firatli Radiological evaluation of sinus lift operation: what the general radiologist needs to know Dentomaxillofac. Radiol., July 1, 2005; 34(4): 199 - 204. [Abstract] [Full Text] [PDF]