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- Ahlqvist, Jan, et al.
(författare)
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The effect of projection errors on cephalometric length measurements
- 1986
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Ingår i: European Journal of Orthodontics. - : Oxford University Press (OUP). - 0141-5387 .- 1460-2210. ; 8:3, s. 141-148
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Tidskriftsartikel (refereegranskat)abstract
- The magnitude of projection errors, calculated theoretically on length measurements in cephalometry was studied. Rotation of the object by up to 5° from the proper position, resulted in errors in length measurements that were usually less than one percent. Rotations of more than 5° may increase the error but imply misalignments of the head that should be evident when positioning the patient. The advantage of extremely long focus film distances seems doubtful.
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