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Ga-67 Lung Uptake in Patients with Adult Respiratory Distress Syndrome

Association with Lung Infection and Patients' Prognosis

HARDOFF, RUTH, M.D., D.Sc.1; MYTTERAERE, SYLVIANNE BURSZTEIN-DE, M.D.*

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Nine patients with adult respiratory distress syndrome (ARDS) were studied with Ga-67 imaging in search for a site of infection. Different degrees and two patterns of Ga-67 lung uptake scoring in comparison with liver uptake were demonstrated. All patients had diffuse lung uptake, whereas five of them also showed additional focal lung activity. In only one patient was an abdominal focal uptake detected. Chest radiographs of all patients revealed diffuse and focal lung infiltrates that correlated with the Ga-67 uptake patterns. Therefore, Ga-67 imaging was unhelpful in differentiating patients with ARDS with lung infection from patients without lung infection. The intensity of Ga-67 uptake, as expressed by Ga-67 scoring, correlated with the course and outcome of ARDS. Patients exhibiting a high Ga-67 score had long periods of hospitalization and eventually died (four patients), whereas those who had low Ga-67 scores had a short disease course and survived (five patients). It is concluded that Ga-67 imaging in ARDS patients is unable to detect lung infection; however, it may be useful in the assessment of patients' prognosis.

1From the Department of Nuclear Medicine, Lady Davis Carmel Hospital, Haifa, Israel

*From the Department of the Respiratory Intensive Care Unit, Lady Davis Carmel Hospital, Haifa, Israel

© Lippincott-Raven Publishers.