Relationship between the gray level of X-ray photograph and the cortical thickness.
- Author:
Hong-gang ZHONG
1
;
Hai-bin BU
;
Fu-hui DONG
Author Information
- Publication Type:Journal Article
- MeSH: Adult; Bone and Bones; chemistry; diagnostic imaging; Humans; Radiography; X-Rays
- From: China Journal of Orthopaedics and Traumatology 2008;21(3):194-195
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVEIn order to get three dimensional measurements simply an plain X-ray photographs.
METHODSThe multi-layers of bone pieces were made by use of bone saw, and piled up to spiral ladder, which was used as a calibrating module for to living bone in clinics. The relationship between the cortical thickness and gray level of the X-ray photographs was obtained.
RESULTSThe correlation can be described with a cubic regression curve, and it can be simplified to a linear regression equation when cortical thickness is small than 3.8 mm.
CONCLUSIONIt can be realized to get three dimensional measures of the bone on plain X-ray photographs, by use of the bony spiral ladder described here.
