Siemens Medical Systems, Inc., HoffmanEstates, IL), equipped with a 30Âslant-hole
collimator (transaxial resolution (fullwidth at half maximum) measured to be 14 mm) using …

Thallium-201 chloride single photon emission computed tomography (201T1 SPECT) has
been proposed as a diagnostic tool in the assessment of patients with brain tumors. We …

To assess whether thallium-201 thallous chloride (Tl) can detect childhood tumors and
whether diagnostic effectiveness improves with combined blood flow imaging, 28 children …

Despite its usefulness in adults with cerebral gliomas, indications for thallium-201 single-
photon emission computed tomography (SPECT) in pediatric brain tumor patients are not …

Thallium-201 chloride (201Tl) single-photon emission computed tomography (SPECT)
detects a high percentage of histologically and anatomically diverse pediatric brain tumors …

Many pediatric centers are beginning to accumulate a large experience in the use of
thallium-201 (201 Tl) imaging in various tumors. High-quality diagnostic imaging with 201 Tl …

Studies are currently underway to determine if simi lar results are observed with tumors
other than pediatric astrocytomas as well as to elucidate the mechanism of uptake of …

RESULTS Sixty SPECT examinations were performed on 37 children undergoing
67Gaevaluation for staging of a variety of solid tumors. In only one child, a 1-yr-old girl with …

Mangner et al.(8) as modified by Mock and Weiner (9). Accord ing to the known stage of
disease, patients received 0.070 or 0.140 mCi/kg of 123I-MIBGby slow intravenous injection …

MATERIALS AND METhODS Patients Over an 18-mo interval, 29 patients with grades 3 and
4 malignant gliomas (21 males and 8 females, median age 39 yr, range 16— 59yr) were …