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https://www.readbyqxmd.com/read/27904443/prognosis-estimation-under-the-light-of-metabolic-tumor-parameters-on-initial-fdg-pet-ct-in-patients-with-primary-extranodal-lymphoma
#1
Kursat Okuyucu, Sukru Ozaydın, Engin Alagoz, Gokhan Ozgur, Semra Ince, Fahrettin Guven Oysul, Ozlem Ozmen, Murat Tuncel, Mustafa Ozturk, Nuri Arslan
BACKGROUND: Non-Hodgkin's lymphomas arising from the tissues other than primary lymphatic organs are named primary extranodal lymphoma. Most of the studies evaluated metabolic tumor parameters in different organs and histopathologic variants of this disease generally for treatment response. We aimed to evaluate the prognostic value of metabolic tumor parameters derived from initial FDG-PET/CT in patients with a medley of primary extranodal lymphoma in this study. PATIENTS AND METHODS: There were 67 patients with primary extranodal lymphoma for whom FDG-PET/CT was requested for primary staging...
December 1, 2016: Radiology and Oncology
https://www.readbyqxmd.com/read/27862622/metabolic-tumor-volume-provides-complementary-prognostic-information-to-eus-staging-in-esophageal-and-junctional-cancer
#2
Vinod Malik, Ciaran Johnston, Dermot O'Toole, Julie Lucey, Naoimh O'Farrell, Zieta Claxton, John V Reynolds
To determine the correlation between (18) F-fluorodeoxyglucose positron emission tomography-computed tomography (PET-CT) derived esophageal tumor parameters [maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV)] and endoscopic ultrasound (EUS) derived tumor parameters (T stage, N stage) and their prognostic implications. 150 consecutive patients with cancer of the esophagus or esophagogastric junction underwent staging PET-CT and staging EUS. PET-CT derived SUVmax and MTV of the primary tumor was recorded...
November 15, 2016: Diseases of the Esophagus: Official Journal of the International Society for Diseases of the Esophagus
https://www.readbyqxmd.com/read/27856630/a-prospective-clinical-trial-of-18f-fluciclovine-pet-ct-neoadjuvant-therapy-response-in-invasive-ductal-and-invasive-lobular-breast-cancers
#3
Gary A Ulaner, Debra Goldman, Adriana Corben, Serge Lyashchenko, Mithat Gonen, Jason Lewis, Maura Dickler
: Fluorine-18-labeled 1-amino-3-fluorocyclobutane-1-carboxylic acid ((18)F-Fluciclovine) is a leucine analog radiotracer that depicts amino acid transport into cells. (18)F-Fluciclovine PET/CT visualizes malignancy including prostate cancer, invasive ductal breast cancer (IDC) and invasive lobular breast cancers (ILC). It has not been shown whether changes in (18)F-Fluciclovine avidity reflect changes in tumor burden resulting from treatment. This prospective clinical trial evaluates changes in (18)F-Fluciclovine-avidity compared to breast cancer therapy response, as determined by residual tumor burden on pathology...
November 17, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27835875/prognostic-value-of-total-lesion-glycolysis-of-baseline-18f-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-in-diffuse-large-b-cell-lymphoma
#4
Mingge Zhou, Yumei Chen, Honghui Huang, Xiang Zhou, Jianjun Liu, Gang Huang
PURPOSE: We evaluated the prognostic value of total lesion glycolysis (TLG) measured in baseline 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) in diffuse large B-cell lymphoma (DLBCL) treated with rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP). METHODS: A total of 91 patients with newly diagnosed DLBCL underwent 18F-FDG PET/CT scans before R-CHOP therapy. Metabolic tumor volume (MTV) was measured with the marginal threshold of normal liver mean standard uptake value (SUVmean) plus 3 standard deviations (SD)...
November 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27835648/mtv-an-ssdna-protecting-complex-essential-for-transposon-based-telomere-maintenance-in-drosophila
#5
Yi Zhang, Liang Zhang, Xiaona Tang, Shilpa R Bhardwaj, Jingyun Ji, Yikang S Rong
Multiple complexes protect telomeres. In telomerase-maintained organisms, Shelterin related complexes occupy the duplex region while the CST and Tpp1-Pot1 complexes bind the single stranded overhang of telomeres. Drosophila uses a transposon-based mechanism for end protection. We showed that the HOAP-HipHop complex occupies the duplex region. Whether an ssDNA-binding complex exists is not known. Here we discover a novel protein, Tea, that is specifically enriched at telomeres to prevent telomere fusion. We also identify a complex consisting of Tea and two known capping proteins, Ver and Moi...
November 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27824966/update-of-the-role-of-pet-ct-and-pet-mri-in-the-management-of-patients-with-cervical-cancer
#6
Benjapa Khiewvan, Drew A Torigian, Sahra Emamzadehfard, Koosha Paydary, Ali Salavati, Sina Houshmand, Sara Pourhassan Shamchi, Thomas J Werner, Aysel Aydin, Shambo Guha Roy, Abass Alavi, Rakesh Kumar
In cervical cancer (CC), fluorine18-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) has been proven to be beneficial for patient management. Positron emission tomography/CT is useful in pretreatment evaluation due to the ability to evaluate disease extent and to assess regional lymph nodes as well as distant sites for metastases. Positron emission tomography/CT has an impact on treatment planning as well as it is incorporated in radiation therapy planning, resulting in more appropriate and effective treatment with less cost and radiation dose to normal tissues...
November 8, 2016: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/27819858/18f-fdg-pet-ct-metabolic-tumor-volume-and-intratumoral-heterogeneity-in-pancreatic-adenocarcinomas-impact-of-dual-time-point-and-segmentation-methods
#7
Esther Mena, Sara Sheikhbahaei, Mehdi Taghipour, Abhinav K Jha, Esther Vicente, Jennifer Xiao, Rathan M Subramaniam
OBJECTIVES: We aimed to determine the consistency of quantitative PET measurements of metabolic tumor volume (MTV) and intratumoral heterogeneity index for primary untreated pancreatic adenocarcinomas, when using dual-time point F-FDG PET/CT imaging. METHODS: This is an institutional review board-approved, retrospective study including 71 patients with pancreatic adenocarcinoma, who underwent dual-time point F-FDG PET/CT imaging, at approximately 1 hour (early) and 2 hours (delayed), after injection...
November 4, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27806589/real-time-4d-dose-reconstruction-for-tracked-dynamic-mlc-deliveries-for-lung-sbrt
#8
Cornelis Ph Kamerling, Martin F Fast, Peter Ziegenhein, Martin J Menten, Simeon Nill, Uwe Oelfke
PURPOSE: This study provides a proof of concept for real-time 4D dose reconstruction for lung stereotactic body radiation therapy (SBRT) with multileaf collimator (MLC) tracking and assesses the impact of tumor tracking on the size of target margins. METHODS: The authors have implemented real-time 4D dose reconstruction by connecting their tracking and delivery software to an Agility MLC at an Elekta Synergy linac and to their in-house treatment planning software (TPS)...
November 2016: Medical Physics
https://www.readbyqxmd.com/read/27789962/18f-fludrodeoxyglucose-maximal-standardized-uptake-value-and-metabolic-tumor-burden-are-associated-with-major-chemotherapy-related-tumor-markers-in-nsclc-patients
#9
Lu Bai, Chihua Guo, Jiansheng Wang, Xiang Liu, Yang Li, Miao Li, Youmin Guo, Xiaoyi Duan
OBJECTIVE: Metabolic activity and tumor burden are significant for prognosis and metastasis of non-small cell lung cancer (NSCLC), including maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), and total lesion glycolysis (TLG). Chemotherapy resistance is a great challenge for treating NSCLC patients and is also closely related with several biomarkers such as epidermal growth factor receptor (EGFR), p53, and excision repair cross-complementing group 1 protein (ERCC1)...
2016: OncoTargets and Therapy
https://www.readbyqxmd.com/read/27775949/prognostic-value-of-metabolic-tumor-volume-and-total-lesion-glycolysis-on-preoperative-18f-fdg-pet-ct-in-patients-with-very-early-and-early-hepatocellular-carcinoma
#10
Sang Hyun Hwang, Jeong Won Lee, Ho Jin Cho, Kyung Sik Kim, Gi Hong Choi, Mijin Yun
PURPOSE: The aim of this article was to evaluate the prognostic value of metabolic tumor volume (MTV) and total lesion glycolysis (TLG) on preoperative F-FDG PET/CT for predicting intrahepatic recurrence-free survival (IHRFS), extrahepatic metastasis-free survival (EHMFS), and overall survival (OS) in patients with very early/early hepatocellular carcinoma (HCC). PATIENTS AND METHODS: We retrospectively enrolled 132 patients with very early/early HCC who underwent F-FDG PET/CT followed by surgery...
October 21, 2016: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/27762071/immunohistochemical-studies-and-fluorodeoxyglucose-uptake-on-positron-emission-tomography-in-pharyngeal-cancer-for-predicting-radiotherapy-based-treatment-outcomes
#11
Y-C Lin, R-Y Chen, S-W Chen, T-C Hsieh, K-Y Yen, J-A Liang, S-N Yang, Y-C Wang, Y-H Chen, N-H Chow, C-H Kao
OBJECTIVES: This study correlated immunohistochemical studies with fluorodeoxyglucose (FDG) uptake on positron emission tomography-computed tomography (PET-CT) and identified prognostic factors for radiotherapy (RT)-based treatment outcomes in patients with squamous cell carcinoma of the oropharynx and hypopharynx. METHODS: Genomic data from pre-treatment biopsy specimens (Glut1, CAIX, VEGF, HIF-1α, EGFR, Ki-67, Bcl-2, CLAUDIN-4, YAP-1, c-Met and p16) of 76 patients were analysed using tissue microarrays...
October 20, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27747383/prognostic-value-of-tumoral-heterogeneity-and-volumetric-parameters-as-measured-by-f18-fdg-pet-ct-in-sinonasal-cancer
#12
Bum Soo Kim, Kyoungjune Pak, Keun-Ik Yi, In Joo Kim, Hwan-Jung Roh, Kyu-Sup Cho
The objective of this study was to investigate the value of parameters assessed with F18-FDG PET/CT in predicting recurrence-free survival (RFS) and disease-specific survival (DSS) in patients with cancer of nasal cavity and paranasal sinus. Thirty-eight patients with cancer of nasal cavity (n = 14) and paranasal sinus (n = 24) who underwent PET/CT prior to curative treatment were enrolled. A volume of interest was placed on PET/CT images covering the entire tumor volume, and the maximum SUV (SUVmax), the mean SUV (SUVmean), and volumetric parameters of metabolic tumor volume (MTV) and total lesion glycolysis (TLG) were measured using thresholds of 40 % of SUVmax...
October 17, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27741099/value-of-volume-based-metabolic-parameters-for-predicting-survival-in-breast-cancer-patients-treated-with-neoadjuvant-chemotherapy
#13
Tae Hee Kim, Joon-Kee Yoon, Doo Kyoung Kang, Seok Yun Kang, Yong Sik Jung, Sehwan Han, Ji Young Kim, Hyunee Yim, Young-Sil An
We evaluated the role of metabolic parameters in the prediction of disease recurrence in operable invasive ductal breast cancer patients treated with neoadjuvant chemotherapy (NAC).We retrospectively evaluated 139 female patients (mean age, 46.5 years; range: 27-72 years) with invasive ductal breast cancer, treated with NAC followed by surgery. All patients underwent F-fluorodeoxyglucose positron emission tomography/computed tomography and magnetic resonance imaging at baseline and after completion of NAC before surgery...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27701854/deciphering-the-spatial-arrangement-of-metals-and-correla-tion-to-reactivity-in-multivariate-metal-organic-frameworks
#14
Qi Liu, Hengjiang Cong, Hexiang Deng
Thirty-six porphyrin based metal-organic frameworks (MOFs) with composition of (M3O)2(TCPP-M)3 and M3O trigonal SBUs of various metals, Mg3O, Mn3O, Co3O, Ni3O, and Fe3O including mixed-metal SBUs, MnxFe3-xO, NixFe3-xO, CoxNi3-xO, MnxCo3-xO, MnxMg3-xO, and MnxNi3-xO were synthesized and characterized. These multivariate MOFs (MTV-MOFs) were examined by X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectra (UV-vis DRS) and, for the first time, their metal spatial arrangement deciphered and found to exist in the form of either domains or well-mixed...
October 5, 2016: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27698001/assessment-of-total-lesion-glycolysis-by-18f-fdg-pet-ct-significantly-improves-prognostic-value-of-gep-and-iss-in-myeloma
#15
James E McDonald, Marcus M Kessler, Michael W Gardner, Amy F Buros, James A Ntambi, Sarah Waheed, Frits van Rhee, Maurizio Zangari, Christoph Heuck, Nathan Petty, Carolina Schinke, Sharmilan Thanendrarajan, Alan Mitchell, Antje Hoering, Bart Barlogie, Gareth Morgan, Faith E Davies
INTRODUCTION: Fluorine-18 fluorodexyglucose positron emission tomography with CT attenuation correction (18F-FDG PET/CT) is useful in the detection and enumeration of focal lesions and in semi-quantitative characterization of metabolic activity (glycolytic phenotype) by calculation of glucose uptake. Total lesion glycolysis (TLG) and metabolic tumor volume (MTV) have the potential to improve the value of this approach and enhance the prognostic value of disease burden measures. This study aims to determine whether TLG and MTV are associated with PFS and OS, and whether they improve risk assessments such as ISS stage and GEP70 risk...
October 3, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/27688480/associations-between-somatic-mutations-and-metabolic-imaging-phenotypes-in-non-small-cell-lung-cancer
#16
Stephen Sf Yip, John Kim, Thibaud Coroller, Chintan Parmar, Emmanuel Rios Velazquez, Elizabeth Huynh, Raymond Mak, Hugo Jwl Aerts
PURPOSE: Positron emission tomography (PET)-based radiomics has been used to non-invasively quantify the metabolic tumor phenotypes; however, little is known about the relationship between these phenotypes and underlying somatic mutations. This study assessed the association and predictive power of (18)F-FDG-PET-based radiomic features for somatic mutations in non-small cell lung cancer (NSCLC) patients. METHODS: 348 NSCLC patients underwent diagnostic (18)F-FDG-PET/CT scans and were tested for genetic mutations...
September 29, 2016: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27686469/intratumoral-heterogeneity-of-18-f-flt-uptake-predicts-proliferation-and-survival-in-patients-with-newly-diagnosed-gliomas
#17
Katsuya Mitamura, Yuka Yamamoto, Nobuyuki Kudomi, Yukito Maeda, Takashi Norikane, Keisuke Miyake, Yoshihiro Nishiyama
BACKGROUND: The nucleoside analog 3'-deoxy-3'-(18)F-fluorothymidine (FLT) has been investigated for evaluating tumor proliferating activity in brain tumors. We evaluated FLT uptake heterogeneity using textural features from the histogram analysis in patients with newly diagnosed gliomas and examined correlation of the results with proliferative activity and patient prognosis, in comparison with the conventional PET parameters. METHODS: FLT PET was investigated in 37 patients with newly diagnosed gliomas...
September 29, 2016: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27679399/influence-of-volumetric-4-methyl-11-c-thiothymidine-pet-ct-parameters-for-prediction-of-the-clinical-outcome-of-head-and-neck-cancer-patients
#18
Hiroshi Hoshikawa, Terushige Mori, Yukito Maeda, Satoshi Takahashi, Yohei Ouchi, Yuka Yamamoto, Yoshihiro Nishiyama
OBJECTIVE: This prospective study compared the value of pretreatment 4'-[methyl-(11)C]-thiothymidine ((11)C-4DST) volumetric parameters and those of 2-deoxy-2-[18F] fluoro-D-glucose ((18)F-FDG) in predicting the clinical outcome in patients with head and neck squamous cell carcinoma (HNSCC). METHODS: Fifty patients with HNSCC underwent (11)C-4DST PET/CT and (18)F-FDG PET/CT prior to anticancer therapy. (18)F-FDG metabolic tumor volume ((18)F-FDG MTV) and total lesion glycolysis (TLG) were calculated from (18)F-FDG PET, and (11)C-4DST MTV and total lesion proliferation (TLP) were calculated from (11)C-4DST PET...
September 27, 2016: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/27664830/g-ratio-weighted-imaging-of-the-human-spinal-cord-in-vivo
#19
T Duval, S Le Vy, N Stikov, J Campbell, A Mezer, T Witzel, B Keil, V Smith, L L Wald, E Klawiter, J Cohen-Adad
The fiber g-ratio is defined as the ratio of the inner to the outer diameter of the myelin sheath. This ratio provides a measure of the myelin thickness that complements axon morphology (diameter and density) for assessment of demyelination in diseases such as multiple sclerosis. Previous work has shown that an aggregate g-ratio map can be computed using a formula that combines axon and myelin density measured with quantitative MRI. In this work, we computed g-ratio weighted maps in the cervical spinal cord of nine healthy subjects...
September 22, 2016: NeuroImage
https://www.readbyqxmd.com/read/27645692/metabolic-tumor-volume-predicts-overall-survival-and-local-control-in-patients-with-stage-iii-non-small-cell-lung-cancer-treated-in-acrin-6668-rtog-0235
#20
Jose G Bazan, Fenghai Duan, Bradley S Snyder, Dunstan Horng, Edward E Graves, Barry A Siegel, Mitchell Machtay, Billy W Loo
PURPOSE: To determine whether higher pre-treatment metabolic tumor volume (tMTV-pre) is associated with worse overall survival (OS) in patients with inoperable NSCLC treated with definitive chemoradiation (CRT). METHODS: This is a secondary analysis of the American College of Radiology Imaging Network (ACRIN) 6668/Radiation Therapy Oncology Group 0235 trial. Pre-treatment PET scans were performed on ACRIN-qualified scanners. Computer-aided MTV measurement was performed using RT_Image...
September 19, 2016: European Journal of Nuclear Medicine and Molecular Imaging
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