Objective: There is a lack of concensus regarding the analysis of 201TI/99mTc dual-isotope
subtraction parathyroid images. We retrospectively evaluated two computer subtraction …

The authors have developed two computer algorithms for TI-201/Tc-99m parathyroid
subtraction scintigraphy that was performed on patients who subsequently underwent …

Parathyroid imaging based on the principle of differential uptakes of Tc-99m and T1-201 in
the anterior neck to localize parathyroid (PT) disease has been reported with widely varying …

Forty five thallium-technetium parathyroid scans were performed preoperatively in patients
with a high suspicion of parathyroid adenoma or hyperplasia. The patients were imaged …

It is impracticable to compare the variety of techniques advocated for thallium–technetium (Tl–
Tc) subtraction parathyroid imaging by repeated studies in patients. We therefore carried out …

MATERIALS AND METHODS We examined 61 selected patients (41 females and 20 males,
aged 21 to 83, average 51) whose clinical and biochemical data (calcemia, phosphoremia …

Precise preoperative localization of parathyroid adenoma (PTA) is helpful for surgical
therapy. The role of radionuclide imaging (RN) of PTA was studied in comparison with …

During the period April, 1982-December, 1983, a group of patients with biochemical
evidence of hyperparathyroidism was studied, using a modification of a technique described …

Our objective was to rigorously compare pinhole and parallel-hole collimation in an
intrapatient, intrastudy design in 2 parathyroid imaging protocols: the first was dual-phase …

Correct location by 201TI imaging of 48 parathyroids in 35 patients was related to size; 25
out of 26 parathyroids of mass greater than 1.0 g were correctly located, none of ten …