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Related Experiment Videos

Bone scanning: principles, technique and interpretation.

L S Malmud, N D Charkes

    Clinical Orthopaedics and Related Research
    |January 1, 1975
    PubMed
    Summary
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    Bone scanning effectively detects bone metastases by identifying reactive bone formation. Advances in radiopharmaceuticals and instrumentation improve detection of occult bone diseases, enhancing diagnostic accuracy.

    Area of Science:

    • Nuclear Medicine
    • Radiology
    • Oncology

    Background:

    • Bone scanning is a key diagnostic tool for detecting bone metastases.
    • Technological advancements have improved scan efficiency and cost-effectiveness.
    • Understanding bone repair phases is crucial for interpreting scan results.

    Purpose of the Study:

    • To explain the principles of bone scanning using metastatic disease as a model.
    • To highlight the role of radioisotopes in detecting reactive bone formation.
    • To describe the three phases of bone repair and their radiographic/scintigraphic correlation.

    Main Methods:

    • Utilizing radiopharmaceuticals that incorporate into hydroxyapatite crystals of reactive bone.
    • Employing phosphate compounds labeled with technetium-99m (99mTc) for most current bone scans.

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  • Performing scans with rectilinear scanners or scintiphoto (gamma) cameras.

    • Main Results:

    • Bone scans detect abnormalities in Phase I of bone repair, even when radiographs show no changes.
    • Scans are highly sensitive, with fewer than 5% of patients showing a normal scan with abnormal radiographs.
    • Scan findings correlate with radiographic and clinical data for accurate interpretation.

    Conclusions:

    • Bone scanning is invaluable for detecting bone metastases and roentgenographically occult diseases.
    • The pathophysiologic model of metastatic disease aids in understanding bone scan principles.
    • Interpreting bone scans requires integration of scintigraphic, radiographic, and clinical information.