Adaptive histogram equalization in digital radiography of destructive skeletal lesions

E. M. Braunstein, P. Capek, K. Buckwalter, P. Bland, C. R. Meyer

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Adaptive histogram equalization, and image-processing technique that distributes pixel values of an image uniformly throughout the gray scale, was applied to 28 plain radiographs of bone lesions, after they had been digitized. The non-equalized and equalized digital images were compared by two skeletal radiologists with respect to lesion margins, internal matrix, soft-tissue mass, cortical breakthrough, and periosteal reaction. Receiver operating characteristic (ROC) curves were constructed on the basis of the responses. Equalized images were superior to nonequalized images in determination of cortical breakthrough and presence or absence of periosteal reaction. ROC analysis showed no significant difference in determination of margins, matrix, or soft-tissue masses.

Original languageEnglish (US)
Pages (from-to)883-885
Number of pages3
Issue number3
StatePublished - Jan 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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