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Related Experiment Videos

Bone marrow 99m Tc sulfur colloid distribution and marrow cellularity.

R E Henry, J W Fletcher, E A George

    The American Journal of the Medical Sciences
    |November 1, 1975
    PubMed
    Summary

    Bone marrow distribution visualized with 99mTc sulfur colloid correlates with cellularity. Marrow extension indicates stimulated hematopoietic cell lines, not just increased cellularity.

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    Clinical radiology·2008

    Area of Science:

    • Nuclear Medicine
    • Hematology
    • Histopathology

    Background:

    • Bone marrow cellularity is a key indicator of hematopoietic activity.
    • Assessing marrow distribution aids in understanding bone marrow function and disease states.

    Purpose of the Study:

    • To investigate the relationship between bone marrow cellularity and marrow distribution using 99mTc sulfur colloid imaging.
    • To determine if marrow distribution patterns can predict cellularity states and hematopoietic responses.

    Main Methods:

    • 101 patients were analyzed, categorizing marrow cellularity (normocellular, hypercellular, hypocellular) and marrow distribution (extended, not extended, not visualized) via 99mTc sulfur colloid imaging.
    • Histologic examination provided the gold standard for marrow cellularity assessment.

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    Main Results:

    • A general association was observed between marrow cellularity and distribution. 77% of normocellular marrow patients showed limited distribution, while reactive hypercellular marrow often showed extension.
    • Exceptions revealed that infiltration can prevent radiocolloid visualization in hypercellular marrow.
    • Hematopoietic stimulation can cause marrow extension without hypercellularity, suggesting stromal response.

    Conclusions:

    • Bone marrow distribution visualized with radiocolloid is not solely a reflection of cellularity.
    • Marrow extension likely represents a stromal response to stimulated hematopoietic cell lines.
    • This imaging technique provides insights into bone marrow stromal and hematopoietic interactions.