Digital image ratio: A new radiographic method for quantifying changes in alveolar bone .1. Theory and methodology

被引：10

作者：

Jean, A ^{[1
]}

Epelboin, Y ^{[1
]}

Rimsky, A ^{[1
]}

Soyer, A ^{[1
]}

Ouhayoun, JP ^{[1
]}

机构：

[1] UNIV PARIS 07, DEPT PARODONTOL, PARIS, FRANCE

来源：

JOURNAL OF PERIODONTAL RESEARCH | 1996年 / 31卷 / 03期

关键词：

image filtering; image analysis; image ratio; bone radiography; quantitative digital radiography; quantification of bone changes;

D O I：

10.1111/j.1600-0765.1996.tb00479.x

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

A new method, digital image ratio (DIR), has been developed for directly measuring changes in alveolar bone. The image on the computer monitor represents the relative mass change between two radiographs. Fourier filtering is used to reduce noise artefacts. This method is validated through an experiment with a step wedge. DIR needs only a preliminary calibration of the experimental conditions of operation and avoids tedious calibrations for each measurement as in the case of digital image substraction. Low-voltage X-ray techniques are suggested for long-term quantitative studies of patients to minimize irradiation doses.

引用

页码：161 / 167

页数：7

共 26 条

[11] Blackening of photographic plates by long wavelength x-rays [J].