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Absorbed dose to the bladder from 99 Tc m DTPA

1976; Wiley; Volume: 49; Issue: 578 Linguagem: Inglês

10.1259/0007-1285-49-578-196

1748-880X

B. L. Diffey, A. J.W. Hilson,

Advanced X-ray and CT Imaging

In the course of renal scanning using 99Tcm DTPA, it became apparent that the generally quoted dosimetry, with an absorbed dose to the bladder of 555 mrad. mCi−1 (Hauser, Atkins and Nelson, 1970), was incompatible with the accepted routine use of 10–15 mCi or 200 μCi.kg−1 of 99Tcm DTPA (Atkins et al., 1973; Handmaker, McRae and Buck, 1973; Kilburn, Howlett and Gilday, 1973). However, the value quoted above was determined on the assumption that the activity all remained in the body, i.e. the patient does not pass urine. A more realistic value for bladder dose can be obtained if the patient is assumed to form and pass urine.