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https://www.readbyqxmd.com/read/29679500/a-unified-material-decomposition-framework-for-quantitative-dual-and-triple-energy-ct-imaging
#1
Wei Zhao, Don Vernekohl, Fei Han, Bin Han, Hao Peng, Yong Yang, Lei Xing, James K Min
PURPOSE: Many clinical applications depend critically on the accurate differentiation and classi-fication of different types of materials in patient anatomy. This work introduces a unified framework for accurate nonlinear material decomposition and applies it, for the first time, in the concept of triple-energy CT (TECT) for enhanced material differentiation and classification as well as dual-energy CT METHODS: We express polychromatic projection into a linear combination of line integrals of material-selective images...
April 21, 2018: Medical Physics
https://www.readbyqxmd.com/read/29675658/iodine-concentration-a-new-important-characteristic-of-the-spot-sign-that-predicts-haematoma-expansion
#2
Fan Fu, Shengjun Sun, Liping Liu, Jianying Li, Yaping Su, Yingying Li
OBJECTIVES: The computed tomography angiography (CTA) spot sign is a validated predictor of haematoma expansion (HE) in spontaneous intracerebral haemorrhage (SICH). We investigated whether defining the iodine concentration (IC) inside the spot sign and the haematoma on Gemstone spectral imaging (GSI) would improve its sensitivity and specificity for predicting HE. METHODS: From 2014 to 2016, we prospectively enrolled 65 SICH patients who underwent single-phase spectral CTA within 6 h...
April 19, 2018: European Radiology
https://www.readbyqxmd.com/read/29672887/young-age-is-associated-with-increased-rates-of-residual-recurrent-pediatric-differentiated-thyroid-carcinoma
#3
Sarah Hampson, Derek Stephens, Jonathan D Wasserman
OBJECTIVE: Differentiated thyroid carcinoma is rare in young children. There are conflicting data as to whether disease in this age group differs from that in adolescents and specifically, if it is more aggressive. Current practice guidelines do not differentiate treatment between these groups, but speculate that differences may exist. We sought to compare clinical features, treatment and outcomes between children (<12 years) and adolescents (12-18 years) with thyroid nodules and thyroid malignancy over a 20 year period...
April 19, 2018: Clinical Endocrinology
https://www.readbyqxmd.com/read/29664794/positive-surgical-margins-in-favorable-stage-differentiated-thyroid-cancer
#4
Catherine E Mercado, Peter A Drew, Christopher G Morris, Peter T Dziegielewski, William M Mendenhall, Robert J Amdur
OBJECTIVE: The significance of positive margin in favorable-stage well-differentiated thyroid cancer is controversial. We report outcomes of positive-margin patients with a matched-pair comparison to a negative-margin group. MATERIALS AND METHODS: A total of 25 patients with classic-histology papillary or follicular carcinoma, total thyroidectomy +/- node dissection, stage T1-3N0-1bM0, positive surgical margin at primary site, adjuvant radioactive iodine (I-131), and age older than 18 years were treated between 2003 and 2013...
April 16, 2018: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/29652048/-should-a-doctor-take-into-consideration-the-influence-of-climatic-factors-deliberations-on-the-occasion-of-the-publication-of-a-new-monograph-the-book-of-essays-of-arid-medicine-by-z-r-zununov-i-h-nurov-and-s-z-zununova
#5
E L Povazhnaya
The authors analyze the monograph of the Uzbek scientists professor Z.R. Zununov, I.H. Nurov, and S.Z. Zununova «Essays of arid medicine» (Tashkent: «KAMALAK-PRESS» publishing house, 2016;540). The book presents the results of the comprehensive bioclimatic assessment of the arid zones of Uzbekistan, their extreme climatic conditions (such as high intensity and solar radiation and the considerable duration of its period, dry air and summer heat, sandstorms (the so-called «Afghans»), and the great variety of the natural health-improving factors including mineral waters, microclimate of the speleotherapeutic cave, the desert dune sand, etc...
April 9, 2018: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29651796/oncological-impact-of-neoadjuvant-hormonal-therapy-on-permanent-iodine-125-seed-brachytherapy-in-patients-with-low-and-intermediate-risk-prostate-cancer
#6
Atsushi Takamoto, Ryuta Tanimoto, Kensuke Bekku, Motoo Araki, Takuya Sadahira, Koichiro Wada, Shin Ebara, Norihisa Katayama, Hiroyuki Yanai, Yasutomo Nasu
OBJECTIVES: To determine whether neoadjuvant hormonal therapy improves oncological outcomes of patients with localized prostate cancer treated with permanent brachytherapy. METHODS: Between January 2004 and November 2014, 564 patients underwent transperineal ultrasonography-guided permanent iodine-125 seed brachytherapy. We retrospectively analyzed low- or intermediate-risk prostate cancer based on the National Comprehensive Cancer Network guidelines. The clinical variables were evaluated for influence on biochemical recurrence-free survival, progression-free survival, cancer-specific survival and overall survival...
April 12, 2018: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/29650270/radioiodine-refractory-differentiated-thyroid-cancer
#7
REVIEW
Yuchen Jin, Douglas Van Nostrand, Lingxiao Cheng, Min Liu, Libo Chen
Differentiated thyroid cancer (DTC) is usually curable with surgery, radioactive iodine (RAI), and thyroid-stimulating hormone (TSH) suppression. However, local recurrence and/or distant metastases occur in approximately 15% of cases during follow-up, and nearly two-thirds of these patients will become RAI-refractory (RR-DTC) with a poor prognosis. This review focuses on the most challenging and rapidly evolving aspects of RR-DTC, and we discuss the considerable improvement in more accurately defining RR-DTC, more effective therapeutic strategies, and describe the diagnosis, pathogenesis, and future prospects of RR-DTC...
May 2018: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/29644934/management-of-subclinical-hypothyroidism-in-pregnancy-a-comment-from-the-italian-society-of-endocrinology-sie-and-the-italian-thyroid-association-ait-to-the-2017-ata-guidelines-the-italian-way
#8
Mario Rotondi, Luca Chiovato, Furio Pacini, Luigi Bartalena, Paolo Vitti
The 2017 ATA Guidelines for the Diagnosis and Management of Thyroid Disease During Pregnancy and the Postpartum were published six years after the previous ones. They provide comprehensive clinical recommendations for the whole spectrum of thyroid diseases as well as for optimal iodine intake during pregnancy, post-partum and lactation. The present position statement mainly regards the recommended flow-chart for therapeutic decision making in pregnant women being diagnosed with subclinical hypothyroidism. The major biochemical and clinical situations and the corresponding therapeutic indications will be commented...
April 12, 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29628632/expression-of-bax-and-bcl2-genes-in-peripheral-blood-lymphocytes-of-patients-with-differentiated-thyroid-cancer
#9
Zari Hamivand, Gholamhassan Haddadi, Reza Fardid
Context: Thyroid cancer is the most common endocrine malignancy worldwide. Iodine-131 is used in the treatment of thyroid cancer with dosage of 100 mCi. In the medical applications of ionizing radiation besides the advantages such as diagnosis and treatment of diseases, the risks arising from exposure should be considered as well. Aims: The present study aimed to evaluate the changes in expression levels of apoptotic Bax and Bcl-2 and the ratio of Bax/Bcl-2, in the peripheral blood lymphocytes (PBLs) of patients with differentiated thyroid cancer (DTC)...
January 2018: Journal of Medical Physics
https://www.readbyqxmd.com/read/29627772/altered-cerebral-blood-flow-in-the-anterior-cingulate-cortex-is-associated-with-neuropathic-pain
#10
Keisuke Watanabe, Shigeki Hirano, Kazuho Kojima, Kengo Nagashima, Hiroki Mukai, Takatoshi Sato, Minoru Takemoto, Koji Matsumoto, Takashi Iimori, Sagiri Isose, Shigeki Omori, Kazumoto Shibuya, Yukari Sekiguchi, Minako Beppu, Hiroshi Amino, Tomoki Suichi, Koutaro Yokote, Takashi Uno, Satoshi Kuwabara, Sonoko Misawa
OBJECTIVE: To assess the cerebral blood flow (CBF) in patients with diabetic neuropathic pain, and its changes after duloxetine therapy. METHODS: Using iodine-123-N-isopropyl-p-iodoamphetamine single-photon emission computed tomography (IMP-SPECT), we performed a cross-sectional study of 44 patients with diabetes, and compared CBF in those with (n = 24) and without neuropathic pain (n = 20). In patients with neuropathic pain, we also longitudinally assessed changes in CBF 3 months after treatment with duloxetine...
April 7, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29624708/accuracy-of-electron-density-effective-atomic-number-and-iodine-concentration-determination-with-a-dual-layer-dual-energy-computed-tomography-system
#11
Chia-Ho Hua, Nadav Shapira, Thomas E Merchant, Paul Klahr, Yoad Yagil
PURPOSE: This study aimed to quantify the accuracy of the determination of electron density (ED), effective atomic number (Zeff ), and iodine concentration, directed for more accurate radiation therapy planning, with a new dual-layer dual-energy computed tomography (DL-DECT) system. The dependence of the accuracy of these values on the scan and reconstruction parameters, as well as on the phantom size, was also examined. METHODS: Measurements were performed on a commercial DECT system with a DL detector (IQon Spectral CT, Philips Healthcare), using phantoms with various tissue-equivalent inserts as well as iodine and calcium inserts of different concentrations...
April 6, 2018: Medical Physics
https://www.readbyqxmd.com/read/29618578/pet-response-assessment-in-apatinib-treated-radioactive-iodine-refractory-thyroid-cancer
#12
Chen Wang, Xin Zhang, Xue Yang, Hui Li, Ruixue Cui, Wenmin Guan, Xin Li, Zhaohui Zhu, Yansong Lin
This work evaluated the use of the positron emission tomography/computed tomography (PET/CT) technique to assess the early therapeutic response and predict the prognosis of patients with radioactive iodine-refractory differentiated thyroid cancer (RAIR-DTC) who underwent apatinib therapy. Standardised uptake value (SUV), metabolic tumour volume (MTV) and total lesion glycolysis (TLG), derived from 18FDG PET/CT and SUV from 68Ga-NOTA-PRGD2 PET/CT, were evaluated. Tumour response was evaluated using the Response Evaluation Criteria in Solid Tumors (RECIST) 1...
April 4, 2018: Endocrine-related Cancer
https://www.readbyqxmd.com/read/29610391/application-of-genomics-to-identify-therapeutic-targets-in-recurrent-pediatric-papillary-thyroid-carcinoma
#13
Rebecca Ronsley, S Rod Rassekh, Yaoqing Shen, Anna F Lee, Colleen Jantzen, Jessica Halparin, Catherine Albert, Douglas S Hawkins, Shazhan Amed, Ralph Rothstein, Andrew J Mungall, David Dix, Geoffrey Blair, Helen Nadel, Steven J M Jones, Janessa Laskin, Marco A Marra, Rebecca J Deyell
Children with papillary thyroid carcinoma (PTC) may relapse despite response to radioactive iodine (RAI). Two children with multiply relapsed PTC underwent whole-genome and transcriptome sequencing. A TPM3-NTRK1 fusion was identified in one tumor, with outlier NTRK1 expression compared to the TCGA thyroid cancer compendium and to Illumina BodyMap normal thyroid. This patient demonstrated resolution of multiple pulmonary nodules without toxicity on oral TRK inhibitor therapy. A RET fusion was identified in the second tumor, another potentially actionable finding...
April 2018: Cold Spring Harbor Molecular Case Studies
https://www.readbyqxmd.com/read/29607601/ldr-brachytherapy-for-the-treatment-of-localised-prostate-cancer-in-men-with-a-high-risk-of-disease-relapse
#14
Robert Laing, Jennifer Uribe, Santiago Uribe-Lewis, Julian Money-Kyrle, Carla Perna, Stylianos Chintzoglou, Sara Khaksar, Stephen E M Langley
OBJECTIVES: To report clinical outcomes of Iodine-125 Low-Dose-Rate Prostate Brachytherapy (LDR-PB) as monotherapy or in combination with androgen deprivation therapy (ADT) and/or external beam radiotherapy (EBRT) in high-risk localised prostate cancer (PCa). PATIENTS AND METHODS: Analysis of clinical outcomes from a prospective cohort of patients treated with LDR-PB alone or combination treatment in a single institution. Men with a high risk of disease relapse were identified by the National Institute for Healthcare Excellence (NICE) criteria or by the National Comprehensive Cancer Network (NCCN) criteria...
April 1, 2018: BJU International
https://www.readbyqxmd.com/read/29594058/trends-in-costs-of-thyroid-disease-treatment-in-denmark-during-1995-2015
#15
Line Tang Møllehave, Allan Linneberg, Tea Skaaby, Nils Knudsen, Lars Ehlers, Torben Jørgensen, Betina Heinsbæk Thuesen
Background: Iodine fortification (IF) may contribute to changes in costs of thyroid disease treatment through changes in disease patterns. From a health economic perspective, assessment of the development in costs of thyroid disease treatment in the population is pertinent. Objectives: To assess the trends in annual medicine and hospital costs of thyroid disease treatment during 1995-2015 in Denmark, i.e., before and after the introduction of mandatory IF in 2000...
March 2018: European Thyroid Journal
https://www.readbyqxmd.com/read/29590675/influence-of-scan-time-point-and-volume-of-intravenous-contrast-administration-on-blood-pool-and-liver-suvmax-and-suvmean-in-18f-fdg-pet-ct
#16
Matthias Schoen, Timm Braun, Panagiota Manava, Sigrid Ludwigs, Michael Lell
AIM: To investigate the influence of scan time point and volume of intravenous contrast material in 18F-FDG PET/CT on maximum and mean standardized uptake values (SUVmax /mean ) in bloodpool and liver. METHODS: In 120 patients scheduled for routine whole-body 18F-FDG PET/CT the maximum and mean standardized uptake values (SUVmax /SUVmean ) in the liver and blood pool were measured after varying scan time-point (delay 0 s-140 s post injectionem) and volume of contrast material (CM; 0 ml, 80 ml, 100 ml of 300 mg/ml of Iodine)...
April 2018: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/29590674/-influence-of-glucocorticoid-therapy-on-intratherapeutic-biodistribution-of-131i-radioiodine-therapy-in-graves-disease
#17
Jörg Halstenberg, Wolfgang Tilman Kranert, Hüdayi Korkusuz, Amelie Mayer, Hanns Ackermann, Frank Grünwald, Christian Happel
AIM: Radioiodine therapy (RIT) is an important therapeutic method in the definitive treatment of Graves' disease (GD). However, RIT may trigger development of Graves' ophthalmopathy (GO) or exacerbate a pre-existing GO. Therefore, the procedure recommendation of the DGN (German Society of Nuclear Medicine) for RIT of benign thyroid diseases recommends an additional glucocorticoid therapy for patients with pre-existing GO. Aim of this study was to analyze the influence of a protective glucocorticoid therapy on131 I biokinetics during RIT of patients with GD...
April 2018: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/29589552/evaluation-and-management-of-the-child-with-thyrotoxicosis
#18
Alexander K C Leung, Alexander A C Leung
BACKGROUND: Uncontrolled thyrotoxicosis, especially in early infancy, may cause irreversible damage to the central nervous system as well as profound effects on the function of many organs. Thyrotoxicosis has multiple etiologies and treatment depends on the underlying etiology. An accurate diagnosis is essential so that appropriate treatment can be initiated without undue delay. OBJECTIVE: To review in depth the evaluation, diagnosis, and treatment of children with thyrotoxicosis...
March 26, 2018: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/29566662/age-greater-than-60-years-portends-a-worse-prognosis-in-patients-with-papillary-thyroid-cancer-should-there-be-three-age-categories-for-staging
#19
Rondi M Kauffmann, J Blair Hamner, Philip H G Ituarte, John H Yim
BACKGROUND: Age is an important prognostic factor in papillary thyroid cancer (PTC), with better survival observed in patients < 45 years of age, regardless of stage. Although the impact of increasing age on PTC-related survival is well-known, previous studies have focused on survival relative to age 45 years only. As the number of patients entering their 7th decade of life increases, PTC-related survival in this demographic becomes increasingly important. Survival in patients ≥ 60 years specifically compared to other groups has not previously been examined...
March 22, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29562827/location-and-causation-of-residual-lymph-node-metastasis-after-surgical-treatment-of-regionally-advanced-differentiated-thyroid-cancer
#20
Jessa E Miller, Neal C Al-Attar, Owen H Brown, Gabrielle G Shaughness, Natalja P Rosculet, Anca Avram, David T Hughes
BACKGROUND: After initial surgical treatment of differentiated thyroid cancer (DTC) residual lymph node metastases are often found at the time of radioactive iodine (131-I) therapy. Recurrence of DTC is due to persistent disease not removed at initial surgery and that did not respond to 131-I treatment. This study aims to determine locations of, and reasons for, residual nodal metastases detected by 131-I scans with SPECT/CT obtained prior to radioiodine therapy following surgical treatment of DTC...
March 21, 2018: Thyroid: Official Journal of the American Thyroid Association
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