Reduction in size of digital images: does it lead to less detectability or loss of diagnostic information?

被引：20

作者：

Versteeg, CH ^{[1
]}

Sanderink, GCH ^{[1
]}

Lobach, SR ^{[1
]}

van der Stelt, PF ^{[1
]}

机构：

[1] Acad Ctr Dent Amsterdam, Dept Oral Radiol, ACTA, NL-1066 EA Amsterdam, Netherlands

来源：

DENTOMAXILLOFACIAL RADIOLOGY | 1998年 / 27卷 / 02期

关键词：

radiography; dental; diagnostic imaging; image processing; computer-assisted; perception;

D O I：

10.1038/sj.dmfr.4600329

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Objectives: To analyse the effect of reduction in size of digital images on diagnostic outcome. Methods: A series of 100 Visualix III (Gender Dental Systems, Milano, Italy; Dentsply, Des Plaines, IL, USA) images was made of size 10 and 15 endodontic files in upper and lower (pre)molars. Three forms of image were created: (a) the original images, (b) reduced to one-half (containing one-quarter of the information of the original, and (c) zoomed-in, half-size images (magnification 2:1; original image size but with only one-quarter of the original information). Seven radiologists were asked to rate the position of the tip of the file, using a five-point confidence scale. ROC data were analysed by means of MANOVA statistics. Results: A significant difference was found between the three image modalities for both size 10 (P<0.005), and size 15 (P<0.021) files. Conclusions: Reduction in size of digital images may cause less detectability as well as loss of diagnostic information.

引用

页码：93 / 96

页数：4

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