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A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space

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A microprocessor-based system for readout of x-ray penetrameter films.

M Nieman, M Davison, A L Evans

Physics in Medicine and Biology

|October 1, 1984

Summary

A new microprocessor instrument enables rapid analysis of penetrameter films using a handheld probe. This device automatically compensates for light source variations and records results, improving X-ray quality control.

Area of Science:

Radiography and Materials Science
Instrumentation and Measurement

Background:

Penetrameter films are crucial for assessing radiographic image quality.
Manual analysis of penetrameter films can be time-consuming and prone to errors.
Non-uniformity in X-ray viewing boxes can affect optical density measurements.

Purpose of the Study:

To develop a microprocessor-based instrument for rapid and accurate analysis of penetrameter films.
To automate compensation for X-ray viewing box non-uniformity.
To provide a reliable method for optical density spot readouts.

Main Methods:

Construction of a microprocessor-based instrument with a handheld probe.
Implementation of automatic compensation for viewing box light source non-uniformity.

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Development of a system for paper recording of procedures and results.

Capability for easy modification of penetrameter calibration data.

Main Results:

The instrument allows for rapid analysis of standard penetrameter films.
Automatic compensation ensures accurate optical density measurements.
The system provides a documented record of analysis procedures and outcomes.
The instrument is versatile, also enabling spot readouts of optical density.

Conclusions:

The developed instrument offers a significant improvement in the efficiency and accuracy of penetrameter film analysis.
This technology enhances quality control in radiographic applications.
The instrument's features facilitate ease of use, calibration, and data recording.