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...

CC This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons. org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. *Correspondence: Sung Pyo Hong, MD, PhD Digestive Disease Center, CHA Bundang Medical Ce...

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...

This study was conducted to determine the serum concentration of zinc in children with acute pyelonephritis. Serum zinc levels of 60 children with acute pyelonephritis and 60 healthy children were compared. Acute pyelonephritis was diagnosed using Tc-99m dimercaptosuccinic acid (DMSA) renal scan. Serum zinc levels were measured by the atomic absorption flame spectrophotometry. The levels in que...

OBJECTIVE To determine use of early Tc-99m dimercaptosuccinic acid scintigraphy in screening for vesicoureteral reflux following first febrile urinary tract infection. METHODS 43 children (1 mo-5 yr) with first febrile urinary tract infection underwent micturating cystourethrography, abdominal sonogram and early dimercaptosuccinic acid scintigraphy. RESULTS Early dimercaptosuccinic acid sci...

A 43-year-old drug addicted female was referred for a L5-S1 posterolateral in situ fixation with autologous graft because of an L5/S1 severe discopathy with listhesis. After six months, low back pain recurred. A Tc-99m HDP SPECT-CT diagnosed a pseudarthrosis with intense uptake of the L5-S1 endplates and a fracture of the right S1 screw just outside the metal-bone interface without any uptake o...

Sixty patients with transplanted kidneys underwent dynamic renal scintigraphy using Technetium99m DTPA. The Perfusion Index, in particular was found to be valuable in differentiating between the two major renal transplant complications of acute tubular necrosis and acute rejection. In addition, other complications like outflow obstruction, pararenal fluid collections, leakage, etc., were readil...

Visualization of the kidneys during hepatobiliary scintigraphy using technetium-99m(Tc) labeled N -substituted iminodiacetic acid agents is often the consequence of severe hepatic dysfunction or biliary tract obstruction {}-3). We report a case of delayed renal visualization seen during hepatobiliary imaging with [Tc]diisopropyl-iminodiacetic acid (DISIDA) where no evidence for severe hepatic d...