Instruments. We selected the energy range from 600 to 800 key from the five different
gamma ener gies of â€@ ÂI (Table 1) for in vivo and in vitro meas urements. The …

TO THE EDITOR: We appreciate the favorable report of Shankar et al. on the use of 24-h
123I scintigraphy for whole-body thyroid tumor imaging (1). We concurrently reported our …

DIAGNOSTIC AND THERAPEUTIC IMPLICATIONS OF LONG-TERM RADIOISOTOPE
SCANNING IN THE MANAGEMENT OF THYROID CANCER Page 1 It is widely accepted that …

SUMMARY Altogether, 147 scintiscans, completed 48–72 h after 74 MBq 131 I, were
compared with scintiscans obtained on average 7.8 days after therapeutic doses of 131 I …

MATERIALS AND METhODS Apparatus Sixteen centrifuge tubes, each 500@ lin capacity,
were placed in two racks which were then inserted into a lucite tank, 40 x 20 x 20 cm filled …

I5 cm in diameter. Within this, the gland phantom consists of two test tubes, each 2 cm in
diameter and 6 cm long. Each tube is filled with 1-123-labeled solution and suspended with …

The merits of 123I as a thyroid scanning agent have been lauded since it became possible
to produce 123I using a cyclotron. In 1967, Rhodes et al.(1) stated:“In the past, the …

I, 6, 7). Additionally, the useof different phantomshindersboth standardization of the
measurementsand inter-institutional comparisons. By contrast, coincidence counting …

Radioactive iodine (131I) plays a major role in the diagnosis and management of
differentiated thyroid cancer (DTC); however, data on the use of the 123I isotope in DTC are …

MATERIALS AND METHODS One-hundred-twenty consecutive patients (124 studies)
referred to our nuclear medicine clinic were given 400/ÂŋCiof Na1-3! solution. In six …