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V Ralph McCready
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October 19, 2016: European Journal of Nuclear Medicine and Molecular Imaging
Valentina Zilioli, Alessia Peli, Maria Beatrice Panarotto, Giancarlo Magri, Ahmed Alkraisheh, Christiane Wiefels, Carlo Rodella, Raffaele Giubbini
The purpose of this prospective study was to determine the incremental diagnostic value of single photon emission computed tomography/computed tomography with iodine-131 over planar whole body scan in the staging of patients with differentiated thyroid carcinoma. A total of 365 patients (270 female, 95 male) with differentiated thyroid carcinoma were treated with radioiodine therapy for thyroid remnant ablation with radical intent after thyroidectomy between January 2013 and November 2014. In addition to planar whole body scan, single photon emission computed tomography/computed tomography of neck and chest were performed...
September 29, 2016: Endocrine
Mehran Pashnehsaz, Abbas Takavar, Sina Izadyar, Seyed Salman Zakariaee, Mahmoud Mahmoudi, Reza Paydar, Parham Geramifar
Iodine-131 (I-131) therapy is one of the conventional approaches in the treatment of patients with differentiated thyroid carcinoma (DTC). The radioiodine agents also accumulate in the other organs that cause pain and damage to the patients. Radioiodine therapy is associated with various gastrointestinal (GI) toxicities. In this study, GI side effects of the radioiodine therapy were investigated. GI toxicities of the radioiodine therapy were studied in 137 patients with histologically proven DTC in Jun-Nov 2014...
September 2016: World Journal of Nuclear Medicine
Khalid Hussain Al-Qahtani, Mutahir A Tunio, Mushabbab Al Asiri, Yasser Bayoumi, Ali Balbaid, Naji J Aljohani, Hanadi Fatani
INTRODUCTION: The aim of this study was to evaluate the treatment outcomes of differentiated thyroid cancer in Saudi patients aged above 60 years. MATERIALS AND METHODS: Comparative analysis was performed in 252 patients aged 46-60 years (Group A) and 118 patients aged above 60 years (Group B), who had thyroidectomy, radioactive iodine-131, and thyroid-stimulating hormone suppression therapy between July 2000 and December 2012. Different clinicopathological features, treatment, complications, disease-free survival, and overall survival rates were compared...
2016: Clinical Interventions in Aging
Tatiana Kelil, Abhishek R Keraliya, Stephanie A Howard, Katherine M Krajewski, Marta Braschi-Amirfarzan, Jason L Hornick, Nikhil H Ramaiya, Sree Harsha Tirumani
Substantial improvement in the understanding of the oncogenic pathways in thyroid cancer has led to identification of specific molecular alterations, including mutations of BRAF and RET in papillary thyroid cancer, mutation of RAS and rearrangement of PPARG in follicular thyroid cancer, mutation of RET in medullary thyroid cancer, and mutations of TP53 and in the phosphatidylinositol 3'-kinase (PI3K)/AKT1 pathway in anaplastic thyroid cancer. Ultrasonography (US) and US-guided biopsy remain cornerstones in the initial workup of thyroid cancer...
September 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
Katharina Mischler, Stefan Kneifel, Richard Cathomas
BACKGROUND: Metastatic differentiated thyroid cancer (DTC) is a rare disease that is in the first line treated with iodine-131 radioisotope therapy. Until recently, options were very limited in the case of progressive radioactive-iodine (RAI)-refractory disease. Based on new study results, tyrosine kinase inhibitors (TKIs) have attracted attention. The TKI sorafenib demonstrated significantly improved progression-free survival (PFS) in a phase III trial. Recent data from another phase III trial showed that the TKI lenvatinib achieved high response rates and a large improvement in PFS in metastatic RAI-refractory DTC patients in the first-line setting and after 1 prior line of TKI...
2016: Oncology Research and Treatment
Meng Gao, Dongjian Zhang, Qiaomei Jin, Cuihua Jiang, Cong Wang, Jindian Li, Fei Peng, Dejian Huang, Jian Zhang, Shaoli Song
Nanomedicine holds great promise for fighting against malignant tumors. However, tumor elevated interstitial fluid pressure (IFP) seriously hinders convective transvascular and interstitial transport of nanomedicines and thus damages its antitumor efficacy. In this study, combretastatin-A4 phosphate (CA4P) was utilized to reduce tumor IFP, and thereby to improve the intratumoral distribution and antitumor efficacy of nanoparticle albumin-bound paclitaxel (nab-paclitaxel). IFP was measured using the wick-in-needle method in tumors growing subcutaneously pretreatment and posttreatment with a single intravenous injection of CA4P...
August 12, 2016: Oncotarget
Xue Yang, Jiao Li, Xiaoyi Li, Zhiyong Liang, Wen Gao, Jun Liang, Shujun Cheng, Yansong Lin
: Telomerase Reverse Transcriptase (TERT) promoter mutation has been reported to be associated with aggressive characteristics in differentiated thyroid cancer (DTC). This study examined the status of TERT promoter mutation in distant metastatic DTC (DM-DTC), and evaluated the correlation between TERT mutation and radioactive iodine-131(RAI) uptake, as well as that between TERT mutation and therapy response. METHODS: TERT promoter and B-Raf proto-oncogene (BRAF) V600E mutation were retrospectively examined in primary tumors of 66 DM-DTC patients...
August 4, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
Rana Kaya Döner, Sait Sager, Fatma Arzu Görtan, Özge Vural Topuz, Reşit Akyel, Betül Vatankulu, Ahmet Baran, Serkan Teksoz, Kerim Sönmezoglu
PURPOSE: This retrospective study aims to assess the cut-off value of thyroglobulin (Tg) levels in nux or metastatic well-differentiated thyroid cancers (DTCs) with normal anti-Tg levels using with fluorodeoxyglucose/positron emission tomography/computed tomography (FDG PET/CT). MATERIALS AND METHODS: We reviewed FDG PET/CT images of 104 patients with well DTC (28 men, 76 women) whose: Iodine-131 (131 I) whole-body scanning was negative but had elevated Tg with normal anti-Tg levels...
April 2016: Journal of Cancer Research and Therapeutics
Tran Xuan Hoi, Huynh Truc Phuong, Nguyen Van Hung
During the production of iodine-131 from neutron irradiated tellurium dioxide by the dry distillation, a considerable amount of (131)I vapor is dispersed to the indoor air. People who routinely work at the production area may result in a significant risk of exposure to chronic intake by inhaled (131)I. This study aims to estimate the inhalation dose for individuals manipulating the (131)I at a radioisotope production. By using an application installed on smartphones, we collected the time-microenvironment data spent by a radiation group during work days in 2015...
September 2016: Applied Radiation and Isotopes
Bin Liu, Yu Chen, Lisha Jiang, Ying He, Rui Huang, Anren Kuang
OBJECTIVE: Postablation whole-body scintigraphy, which is performed 5-7 days after administration of ablation activity of radioactive iodine-131 ((131) I) in patients with thyroid cancer, is considered a routine procedure for remnant ablation and a useful tool for disease staging. However, the relationship of pre-ablation stimulated thyroglobulin (s-Tg) levels with postablation scintigraphic findings has not been evaluated. The current study was designed to determine the diagnostic value of postablation (131) I scintigraphy during initial staging and risk stratification in intermediate-risk papillary thyroid cancer (PTC) patients with pre-ablation s-Tg < 1 ng/ml at the time of ablation...
July 19, 2016: Clinical Endocrinology
Marwa Al Aamri, Ramamoorthy Ravichandran, John Pichy Binukumar, Naima Al Balushi
BACKGROUND: Treatments for thyrotoxicosis and carcinoma thyroid are carried out by oral administration of radioactive iodine ((131)I) in the form of liquid or capsules. The liquid form of (131)I has higher risk factors such as vapourization, spillage and need for management of higher activity wastes. Use of (131)I in capsule form simplify procedures of handling compared to liquid form of (131)I. The guidelines of safe handling and quality assurance aspects for therapeutic use (131)I are well outlined by International Atomic Energy Agency (IAEA) reports...
July 2016: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
Feng Xu, Aichun Gu, Yifan Pan, Liwen Yang, Yubo Ma
OBJECTIVE: This prospective study aimed to assess iodine-131 (I)-induced early thyroid hormone variations in Graves' disease (GD) and determine the associated factors. MATERIALS AND METHODS: One hundred and seventy-one GD patients treated with I were evaluated (47 men, 124 women). I was administered at 9.0±4.9 mCi on average. Serum free triiodothyronine and free thyroxin were measured within 24 h before treatment and 8 (3-14) days after treatment. Patients were divided into increase, no change, and decrease groups, respectively, on the basis of hormone variations after treatment...
November 2016: Nuclear Medicine Communications
Fatma Yurt Lambrecht, Mine Ince, Ozge Er, Kasim Ocakoglu, Cagla Kayabasi, Cumhur Gunduz, Fatma Aslıhan Sarı
Pancreatic cancer is very common and difficult to diagnose in early stage. Imaging systems for diagnosing cancer have many disadvantages. However, combining different imaging modalities offer synergistic advantages. Optical imaging is the most multidirectional and widely used imaging modality in both clinical practice and research. In present study, Zinc(II) phthalocyanine [Zn(II)Pc] was synthesized, labeled with iodine-131 and in vitro study was carried out. The intracellular uptake studies of radiolabeled Zn(II)Pc were performed in WI-38 [ATCC CCL-75™, tissue: human fibroblast lung] and MIA PaCa-2 [ATCC CRL-1420™, tissue: human epithelial pancreas carcinoma] cell lines...
June 27, 2016: Current Radiopharmaceuticals
C A J van Gils, C Beijst, R van Rooij, H W A M de Jong
Radioiodine therapy using I-131 is widely used for treatment of thyroid disease or neuroendocrine tumors. Monitoring treatment by accurate dosimetry requires quantitative imaging. The high energy photons however render quantitative SPECT reconstruction challenging, potentially requiring accurate correction for scatter and collimator effects. The goal of this work is to assess the effectiveness of various correction methods on these effects using phantom studies. A SPECT/CT acquisition of the NEMA IEC body phantom was performed...
July 21, 2016: Physics in Medicine and Biology
Fei Xu, Linling Tang, Hong Yuan, Jianjun Liu, Gang Huang, Shaoli Song
OBJECTIVE: To investigate the eradicate effect of Helicobacter pylori in differentiated thyroid cancer patients who underwent I therapy. MATERIALS AND METHODS: A total of 130 patients with differentiated thyroid cancer underwent I treatment. None of the patients had a history of stomach-related diseases. The C-urea breath test (UBT) was carried out for H. pylori examination before I treatment. The cut-off value for C-UBT was 4%. For H. pylori test-positive patients, a second C-UBT was performed 4-6 weeks after I treatment...
November 2016: Nuclear Medicine Communications
Hideshi Fujiwara
During the early stages of the Fukushima nuclear accident, the temporal variations of (131)I deposited on the ground and of (131)I accumulated in cropland soil were monitored at a fixed location in Japan. Moreover, concentrations of long-lived radioactive iodine ((129)I) in atmospheric deposits and soil were measured to examine the feasibility of retrospectively reconstructing (131)I levels from the levels of accident-derived (129)I. The exceptionally high levels of (131)I in deposits and soil were attributed to rainfall-related deposition of radionuclides...
October 1, 2016: Science of the Total Environment
Yesenia Rojas, Sergio Jaramillo, Karen Lyons, Nadia Mahmood, Meng-Fen Wu, Hao Liu, Sanjeev A Vasudevan, R Paul Guillerman, Chrystal U Louis, Heidi V Russell, Jed G Nuchtern, Eugene S Kim
BACKGROUND: While most high-risk neuroblastoma (HRNB) patients are enrolled in cooperative group or institutional protocols, variability exists within these protocols as to when surgical resection of the primary tumor should be performed after neoadjuvant induction chemotherapy. We sought to determine if the number of chemotherapy cycles prior to surgery affects surgical or survival outcomes in HRNB patients. METHODS: We performed a retrospective review of all HRNB patients <18years of age from 2000 to 2010, at Texas Children's Hospital...
October 2016: Journal of Pediatric Surgery
Xiaofeng Dou, Jianghua Yan, Yafei Zhang, Peng Liu, Yizhen Jiang, Sha Lv, Fanwei Zeng, Xiaoli Chen, Shengyu Wang, Haipeng Zhang, Hua Wu, Hong Zhang, Lin Ouyang, Xinhui Su
As a novel co-receptor for vascular endothelial growth factor (VEGF), neuropilin receptor type-1 (NRP-1) is overexpressed in several cancers and metastases, and serves as an attractive target for cancer molecular imaging and therapy. Previous single photon emission computerized tomography (SPECT) studies demonstrated that the small NRP-1-targeting peptides 99mTc-MA-ATWLPPR and 99mTc-CK3 showed poor tumor imaging quality, because of their rapid blood clearance and very low tumor uptake. Compared with small peptides, monoclonal antibodies (mAbs) can improve imaging of NRP-1-expression, due to their high affinity, specificity and slow extraction...
September 2016: International Journal of Oncology
Dong You, Ruizhen Ren, Ercheng Chen, Shulin Chen, Dawei Wang, Jianhui Liu
Malignant pheochromocytoma is a rare tumor, for which there is currently no effective therapy. Cytoreductive surgery is recommended to reduce tumor burden and relieve the symptoms of catecholamine excess, although complete eradication of the lesions is often not feasible. In patients with advanced disease, for whom surgical resection is not an option, systemic chemotherapy, radiotherapy and treatment with iodine-131-meta-iodobenzylguanidine may be used to achieve symptomatic relief. Although malignant pheochromocytoma is considered to be unresponsive to radiotherapy, a limited number of case reports, although not large patient samples, have been published on the effectiveness of radiotherapy for the treatment of this disease...
June 2016: Molecular and Clinical Oncology
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