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[The upper gastrointestinal imaging and the gastrogram using 99mTc-pertechnetate (author's transl)]

F Shishido, S Okuyama, H Mishina

    Radioisotopes
    |November 1, 1978
    PubMed
    Summary

    Technetium Tc-99m pertechnetate scans aid upper gastrointestinal diagnoses. Oral administration detects esophageal and pyloric obstruction, while intravenous use visualizes stomach mucosa, identifying cancerous "cold regions".

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    Area of Science:

    • Nuclear Medicine
    • Gastroenterology
    • Medical Imaging

    Background:

    • Diagnostic imaging of the upper gastrointestinal tract is crucial for patient management.
    • Traditional methods may have limitations in visualizing specific pathologies like mucosal details or in assessing high-risk patients.

    Purpose of the Study:

    • To evaluate the utility of Technetium Tc-99m pertechnetate (99mTc) for diagnosing upper gastrointestinal tract conditions.
    • To assess the effectiveness of both oral and intravenous administration routes for different diagnostic purposes.

    Main Methods:

    • Oral administration of 99mTc-pertechnetate for detecting stenosis and obstruction in the esophagus and pylorus.
    • Intravenous administration of 99mTc-pertechnetate for gastric mucosal imaging.
    • Gastric scintiphotography to record temporal radioactivity (gastrogram).

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    Main Results:

    • Oral 99mTc-pertechnetate effectively identified stenosis and obstruction in the esophagus and pylorus, particularly in poor-risk patients.
    • Intravenous 99mTc-pertechnetate provided clear visualization of the stomach mucosa.
    • Scintigraphy revealed a distinct "cold region" in a patient with stomach cancer.

    Conclusions:

    • 99mTc-pertechnetate scintigraphy is a valuable tool for diagnosing upper gastrointestinal disorders.
    • Different administration routes offer distinct diagnostic advantages for specific conditions.
    • Gastric scintigraphy (gastrogram) represents a promising new approach in clinical gastroenterology.