A quantitative radionuclide angiogram technique using an intravenous injection of technetium99m (Tc-99m) pertechnetate is described for quantitation of left-to-right shunts in the central circulation. Data analysis assumes exponential indicator clearance from normal cardiac chambers by dilution. A late prolongation of tracer disappearance compared to the initial clearance rate indicates an abno...

BACKGROUND Steroid-responsive encephalopathy associated with subacute thyroiditis has, to our knowledge, not been reported previously. CASE REPORT A 49-year-old woman was found collapsed and brought to our institution with decreased mentality, dysarthria, and gait disturbance. Brain magnetic resonance imaging and angiography were normal but blood tests revealed thyroid-autoantibody-negative t...

UNLABELLED The purpose of this prospective study was to evaluate the diagnostic value of early parathyroid SPECT combined with quantitative analysis as compared with planar imaging in patients undergoing minimally invasive radioguided surgery. METHODS A total of 52 consecutive patients with primary hyperparathyroidism underwent planar and SPECT parathyroid scintigraphy 2-5 d before surgery. E...

OBJECTIVES To describe a case of Meckel's diverticulum with an unusual complication of iron deficiency anaemia due to chronic intestinal bleeding. CLINICAL PRESENTATION AND INTERVENTION A 12-year-old boy presented with bloody diarrhoea and abdominal pain in association with a long-standing history of black stools and progressive pallor. Biochemical tests revealed low serum iron (1.2 mmol/l) i...

Hashimoto thyroiditis (HT) is an autoimmune thyroid disorder that usually presents as a diffuse, nontender goiter, whereas subacute thyroiditis (SAT) is an uncommon disease that is characterized by tender thyroid enlargement, transient thyrotoxicosis, and an elevated erythrocyte sedimentation rate (ESR). Very rarely, patients with HT can present with painful, tender goiter or fever, a mimic of ...

BACKGROUND An 80-year-old woman presented with an abrupt onset of asymptomatic black-to-purple discoloration of her right limb that appeared just before a thyroid gammagraphy. No antecedent of trauma was found. CASE PRESENTATION On questioning, patient admitted she did not cooperate during intravenous administration of Tc-99m-pertechnetate. Based on the abrupt onset of lesions and the absence...

OBJECTIVE The present study was performed to investigate the feasibility of fusion of images obtained by SPECT and multidetector CT (MDCT) for the accurate localization of sentinel lymph nodes in prostate cancer patients. METHODS To facilitate the fusion of both SPECT and CT images, a pelvic MDCT scan was performed with 3 markers of small plastic bullets attached to the skin over the bilatera...

Two patients with left middle cerebral artery (MCA) distribution infarctions fulfilled the "hot stroke" criteria on sequential 99m Tc pertechnetate flow and static gamma camera studies. The radioisotopic finding of a paradoxical relative increased flow to the affected hemisphere correlated with serial angiography showing multiple MCA branch occlusions becoming patent with a vascular blush and e...

The aim of this study was to evaluate the usefulness of fine-needle aspiration cytology (FNAC) and (99m)Tc-pertechnetate scintigraphy (TS) together in patients with differentiated thyroid carcinoma. Data from a series of 357 patients (284 women and 73 men, median age 43 years, range 19-73) with solitary thyroid nodule and no signs of hyperfunction, who had undergone both FNAC and TS prior to su...

A 68-year-old woman with solid/trabecular follicular thyroid carcinoma inside of an autonomously functioning thyroid nodule is described in this paper. The patient was referred to our clinic for swelling of the neck and an increased pulse rate. Ultrasonography showed a slightly hypoechoic nodule in the right lobe of the thyroid. Despite suppressed TSH levels, the (99m)Tc-pertechnetate scan show...