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Tumor Scanning With Radioactive ¹³¹Cesium

Philadelphia

ABSTRACT

Fourteen patients with cancer were scanned 10 minutes to 48 hours after injection of radioactive ¹³¹Cs, and satisfactory scans of the tumors were obtained in seven. Positive scans were obtained in large, superficial tumors, in a pulmonary lymphoma, and in a carcinoma of the upper third of the esophagus. The negative scans were all in abdominal tumors. Correlations were made with data obtained from external counting and by well scintillation counting of biopsy specimens. Two modes of uptake are suggested: (A) early uptake due to vascularity and probably not proportional to stable cesium content; and (B) a later uptake based upon greater alkali metal content of tumors than of normal tissue.

FOOTNOTES

¹ From the Department of Nuclear Medicine and Radiation Therapy of the Division of Radiology, Albert Einstein Medical Center, Northern Division Philadelphia, Pennsylvania.