P-32 bremsstrahlung SPECT helps assess intracavitary therapy.
A patient underwent intracavitary P-32 chromic phosphate therapy for a chest tumor. Tc-99m sulfur colloid instilled before the P-32 demonstrated uniform distribution of activity throughout the right pleural space, and the P-32 was immediately administered. Ten days later, SPECT imaging using bremsstrahlung radiation of the P-32 showed an unexpected loculation of the P-32. A subsequent chest CT scan demonstrated pleural infolding and fluid localization in the same area as the P-32, indicating that the bremsstrahlung SPECT study had, in fact, documented the final localization of the P-32, which was unexpected and different from the initial localization. The procedure used in this case may be of value in documenting the ultimate distribution of intracavitary P-32.
Petri
B
B
Division of Nuclear Medicine, Oregon Health Sciences University, Portland 97201-3098.
Nance
R
R
Hanada
J
J
Stevens
J
J
D000368:Aged; D001918:Brachytherapy; D006801:Humans; D008297:Male; D008654:Mesothelioma / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D010761:Phosphorus Radioisotopes / Q000627:therapeutic use*; D013899:Thoracic Neoplasms / Q000000981:diagnostic imaging / Q000532:radiotherapy*; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods*
D010761:Phosphorus Radioisotopes