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Extremity bone tumors: evaluation by P-31 MR spectroscopy.

A C Nidecker, S Müller, W P Aue

    Radiology
    |October 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Phosphorus-31 magnetic resonance (P-31 MR) spectroscopy reveals distinct metabolic profiles in human bone tumors. Active bone tumors show high adenosine triphosphate (ATP) levels, differing from healthy bone P-31 MR spectra.

    Area of Science:

    • Biophysics
    • Oncology
    • Medical Imaging

    Background:

    • Distinguishing benign from malignant bone lesions is crucial for effective treatment.
    • Phosphorus-31 magnetic resonance (P-31 MR) spectroscopy offers insights into cellular metabolism.
    • Previous P-31 MR studies have primarily focused on animal models or implanted human tumors.

    Observation:

    • High-resolution P-31 MR spectra were acquired from four patients with distal extremity bone tumors.
    • One patient with Ewing sarcoma was evaluated post-treatment, while three others with active chondrosarcoma, malignant fibrous histiocytoma, and chondroblastoma were studied.
    • Bone scintigraphy confirmed active tumor growth and increased metabolism in three of the patients.

    Findings:

    • Active bone tumors exhibited high adenosine triphosphate (ATP) content, comparable to animal tumor models.

    Related Experiment Videos

  • Elevated inorganic phosphate and reduced phosphocreatine resonances were observed in active tumors.
  • Phosphodiester and phosphomonoester peaks indicated the presence of these metabolites, with slight changes noted post-chemotherapy in one case.
  • Healthy bone P-31 MR spectra lacked well-resolved signals, contrasting with tumor spectra.

    • Implications:

    • P-31 MR spectroscopy can differentiate metabolically active bone tumors from healthy bone.
    • This technique may aid in assessing tumor response to therapy and understanding bone tumor biochemistry.
    • These findings represent the first P-31 MR spectra of human bone tumors obtained directly from patients.