Technitium

Autoimmune endocrinopathies and, less commonly, thyroid autoimmune disease have been reported in patients with sarcoidosis. Similarities exist in the pathogenesis of these two conditions. Concomitant sarcoidosis in the thyroid gland in patients with Graves' disease may contribute to the resistance to antithyroid drugs and radioiodine therapy. We present the clinical, laboratory, imaging, and pathologic findings of a patient with Graves' disease who was unresponsive to medical management. This 37-year-old man presented with thyrotoxicosis...

PURPOSE OF THE STUDY: The purpose of the present study is to find out the correlation between the glomerular filtration rate (GFR by Gates gamma camera method) and serum creatinine clearance (SCrCl by Cockcroft and Gault's method) within ± 3 weeks' time difference. MATERIALS AND METHODS: Study design retrospectively in 59 patients with serum creatinine value calculated for SCrCl with Cockcroft and Gault's formula as an index parameter for kidney function underwent the 99m-Technitium labeled Di-ethyl Triamine Penta Acetic Acid (99mTc-DTPA) renogram with ECIL planar gamma camera...

The present study reports the design, synthesis, and biological evaluation of a novel, intravenously injectable, theranostic prodrug based on multiwalled carbon nanotubes (MWCNTs) concomitantly decorated with a fluorochrome (Alexa-fluor, AF488/647), radionucleide (Technitium-99m), tumor-targeting module (folic acid, FA), and anticancer agent (methotrexate, MTX). Specifically, MTX was conjugated to MWCNTs via a serum-stable yet intracellularly hydrolyzable ester linkage to ensure minimum drug loss in circulation...

Thyroid stimulating hormone (TSH) secreting adenomas are the rarest type of pituitary adenomas (1:1000000 in the population; 0.2- 2.8% of adenomas). Plurihormonal thyrotropic adenomas are even rarer usually having cosecretion of growth hormone (GH) and prolactin. We report perhaps for the first time, TSH, GH, adrenocorticotrophic hormone (ACTH) and gonadotropins secreting pituitary macroadenoma diagnosed in a 40 year lady presenting with features of thyrotoxicosis for 5 months, amenorrhea for 3 months and newly diagnosed diabetes and hypertension for 2 months along with headache, nausea, and vomiting, who had acromegaloid habitus, grade-II goitre, increased uptake on Technitium-99 pertechnate thyroid scan (4...

OBJECTIVES: This study investigated whether the technitium-99m sestamibi (MIBI) washout rate (WR) would predict mitochondrial damage and myocardial dysfunction in patients with dilated cardiomyopathy (DCM). BACKGROUND: Myocardial mitochondrial damage reduces adenosine triphosphate production, resulting in myocardial dysfunction. Increased myocardial (99m)Tc-MIBI washout is reportedly caused by mitochondrial dysfunction. METHODS: Twenty DCM patients (New York Heart Association functional class I-III) underwent myocardial (99m)Tc-MIBI scintigraphy and cardiac catheterization...

The outcome of children born with cyanotic congenital heart disease has markedly improved over the years. Follow up is recommended for most post-operated cases as complications may occur over long term. One of the complications is the development of ventricular dysfunction, often seen after a successful Fontan surgery (or one of its modifications) for single ventricle. The aim of this study was to determine the prevalence of myocardial perfusion abnormalities in the ventricular myocardium of asymptomatic patients, older than 8 years of age, who had earlier undergone either a univentricular palliation (modified Fontan procedure) or a biventricular repair for tetralogy of Fallot, more than a year ago...

OBJECTIVE: To determine the potentials of technitium-99m mercaptoacetyltriglycine (99mTc MAG3) to replace technitium-99m dimercaptosuccinic acid (99mTc DMSA) in assessment of renal cortex and split renal function (SRF). MATERIAL AND METHODS: This a retrospective study in which we reviewed the scintigraphic results of 52 patients with age range of 7 days-10 years (mean, 5.3 years). A total of 104 studies (1 99mTc MAG3 and 1 99mTc DMSA per patient) were performed between 1 January, 2009 and 31 December, 2010 because of various renal disorders...

PURPOSE: To evaluate the efficacy of a workflow consisting of repeat assessment in patients planned for yttrium-90 ((90)Y) radioembolization in case of nontarget visceral technetium-99m ((99m)Tc)-macroaggregated albumin (MAA) accumulation despite initial prophylactic coil embolization of nonhepatic arteries. MATERIALS AND METHODS: In 341 patients with primary and secondary liver cancer, pretreatment hepatic angiograms, as well as single-photon emission computed tomography coregistered with magnetic resonance imaging scans, were obtained...

INTRODUCTION: The aim of the present study was to evaluate the clinical outcome of a normal stress technetium-99m (99mTc)-Sestamibi single photon emission computed tomography (SPECT) myocardial perfusion imaging (MPI) with different probabilities of coronary artery disease (CAD). MATERIAL AND METHODS: A total of 1,047 subjects with a normal 99mTc-MIBI SPECT were followed up for one year and hard and soft cardiac events were assessed. Hard cardiac events were defined as cardiac death or non-fatal myocardial infarction (MI)...

Antimyosin antibody is highly specific for in vivo delineation of acute myocyte necrosis as only irreversibly damaged myocytes with sarcolemmal disruption will enable access of the administered antibody to the once-privileged intracellular antigen-myosin. Thus, antimyosin radiolabeled with either indium-111 or technitium-99m has been used for the noninvasive diagnosis of myocyte necrosis associated with acute myocardial infarction, myocarditis, heart transplant rejection, as well as in other cardiac disorders such as rheumatic carditis or adriamycin cardiotoxicity...

INTRODUCTION: Thoracic electrical bioimpedance (TEB) for measuring cardiac output (CO) is being explored increasingly as an alternative to pulmonary artery catheter. The major advantage of this technology is that it is non-invasive and easy to perform. Several studies have compared it to thermodilution cardiac output using PA catheter, with variable correlation. Multigated radionuclide equilibrium cardiography (RNEC) method of cardiac output measurement is known to be reliable. OBJECTIVE: To compare cardiac output measured by thoracic electrical bioimpdenace with that measured by multigated radionuclide equilibrium cardiography...

INTRODUCTION: To describe the use of combined preoperative imaging and intraoperative parathyroid hormone as a novel approach in the surgical management of a patient with tertiary hyperparathyroidism associated with X-linked hypophosphatemic rickets. CASE PRESENTATION: We present the first documented description of combined preoperative imaging and intraoperative parathyroid hormone as well as a review of the literature surrounding the surgical management of tertiary hyperparathyroidism in the setting of X-linked hypophosphatemic rickets...

A 6-year-old, spayed female dog was evaluated for a history of chronic coughing, excessive panting, and lethargy. Iatrogenic hyperadrenocorticism was diagnosed, and pulmonary mineralization was documented with a 99m Technitium-methylene diphosphonate (99mTc-MDP) scan. Blood gas analysis showed hypoxia. Clinical signs resolved and blood gas values returned to normal when corticosteroid therapy was discontinued.

INTRODUCTION: Sentinel node mapping with radioactive technetium in non-small cell lung cancer has been shown to be feasible in several single institution reports. The Cancer and Leukemia Group B designed a phase II trial to test a standardized method of this technique in a multi-institutional setting. If validated, the technique could provide a more accurate and sensitive way to identify lymph node metastases. METHODS: Patients with clinical stage I non-small cell lung cancer amenable to resection were candidates for this trial...

Pain around the lateral aspect of the knee is a common occurrence, and precise diagnosis may be difficult on clinical examination alone. Routine imaging modalities include plain radiographs, Technitium 99m bone scanning, computed tomography, and magnetic resonance imaging. Ultrasound has been little used in the investigation of knee pathology. The authors present a case of recurrent tenosynovitis of the popliteus tendon in which the diagnosis was finally (after 22 years) made using ultrasound. The authors suspect that this condition may be more common than previously believed and that it may be misdiagnosed as meniscal pathology...

In this paper, we propose an approach for the reconstruction of dynamic images from a gated cardiac data acquisition. The goal is to obtain an image sequence that can show simultaneously both cardiac motion and time-varying image activities. To account for the cardiac motion, the cardiac cycle is divided into a number of gate intervals, and a time-varying image function is reconstructed for each gate. In addition, to cope with the under-determined nature of the problem, the time evolution at each pixel is modeled by a B-spline function...

BACKGROUND: Assessing the extent of ulcerative colitis determines therapeutic strategies and provides prognostic information. Colonoscopy with mucosal biopsy is considered unsafe in patients with severe disease. AIM: To assess the correlation between proximal extent of ulcerative colitis as determined by Technitium-99-m hexamethylpropylene amine oxime labelled leucocyte scan (white cell scan) with that determined by histological assessment. METHODS: One hundred and thirty-five patients, with histologically-confirmed ulcerative colitis, who had a white cell scan and histological assessment of colonic inflammation within 6 months of each other, during the years 1991-2004, were included...

OBJECTIVE: The authors hypothesized that there is a pattern difference in cerebralperfusion of the 99-Technitium L, L-ethyl cysteinate dimer Single Photon Emission Computer Tomography (99-Tc ECD SPECT) between mild and moderate to severe dementia. MATERIAL AND METHOD: The authors reported a retrospective study in the Memory Clinic, Siriraj Hospital between January 2001 and October 2003 including only patients with Alzheimer's disease, vascular dementia, and mixed dementia...

OBJECTIVE: To evaluate fundal injection of blue dye and radiocolloid for lymphatic mapping and sentinel node identification in women with high-risk endometrial cancer. METHODS: At laparotomy, 18 women with high-risk endometrial cancer had isosulfan blue and technitium-99 radiocolloid injected into the uterine fundus subserosally. Sentinel nodes were then identified either by direct observation of blue dye, by radioactive counts using a handheld gamma counter, or by a combination of both methods...

Following liver transplantation, the effect of post-operative parenteral nutrition with MCT LCT (Medium Chain Triglycerides/Long Chain Triglycerides) fat emulsions on the recovery of allografts RES function was investigated in a randomised prospective study of three groups of patients (group I, n = 14: 50g MCT LCT fats twice weekly, group II, n = 15: 0.7 g/kg body weight per day MCT LCT fats, group III, n = 17: 1.5 g/kg body weight per day MCT LCT fats). RES function was assessed using the (99m)Tc-HSA-MM-Clearance ((99m)Technitium-Human serum albumen-Millimicrosphere-Clearance)...