Low-Cost Microcomputer-Based Densitometer | Zendy

Hugh K. Richards | Zendy; A. H. J. Lovick | Zendy; John D. Pickard | Zendy

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Low-Cost Microcomputer-Based Densitometer

Author(s) -

Hugh K. Richards,

A. H. J. Lovick,

John D. Pickard

Publication year - 1985

Publication title -

journal of cerebral blood flow and metabolism

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.167

H-Index - 193

eISSN - 1559-7016

pISSN - 0271-678X

DOI - 10.1038/jcbfm.1985.67

Subject(s) - densitometer , microcomputer , optical density , wedge (geometry) , computer hardware , computer science , optics , computer graphics (images) , optoelectronics , electronic engineering , materials science , physics , engineering , telecommunications , chip

We have constructed low-cost equipment for the measurement of the optical density of x-ray films. This equipment is based on a video system connected via an analog to digital converter to an Apple microcomputer. The optical density of an x-ray film can thus be accessed by commands in BASIC or machine-code programs. By using a calibrated step-wedge film, we have found a stable linear response for optical densities of up to 0.8.

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