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https://www.readbyqxmd.com/read/28210997/3d-skeletal-uptake-of-18-f-sodium-fluoride-in-pet-ct-images-is-associated-with-overall-survival-in-patients-with-prostate-cancer
#1
Sarah Lindgren Belal, May Sadik, Reza Kaboteh, Nezar Hasani, Olof Enqvist, Linus Svärm, Fredrik Kahl, Jane Simonsen, Mads H Poulsen, Mattias Ohlsson, Poul F Høilund-Carlsen, Lars Edenbrandt, Elin Trägårdh
BACKGROUND: Sodium fluoride (NaF) positron emission tomography combined with computer tomography (PET/CT) has shown to be more sensitive than the whole-body bone scan in the detection of skeletal uptake due to metastases in prostate cancer. We aimed to calculate a 3D index for NaF PET/CT and investigate its correlation to the bone scan index (BSI) and overall survival (OS) in a group of patients with prostate cancer. METHODS: NaF PET/CT and bone scans were studied in 48 patients with prostate cancer...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28210996/quantitative-evaluation-of-oxygen-metabolism-in-the-intratumoral-hypoxia-18-f-fluoromisonidazole-and-15-o-labelled-gases-inhalation-pet
#2
Tadashi Watabe, Yasukazu Kanai, Hayato Ikeda, Genki Horitsugi, Keiko Matsunaga, Hiroki Kato, Kayako Isohashi, Kohji Abe, Eku Shimosegawa, Jun Hatazawa
BACKGROUND: Intratumoral hypoxia is one of the resistant factors in radiotherapy and chemotherapy for cancer. Although it is detected by (18)F-fluoromisonidazole (FMISO) PET, the relationship between intratumoral hypoxia and oxygen metabolism has not been studied. The purpose of this study was to evaluate the intratumoral perfusion and oxygen metabolism in hypoxic regions using the rat xenograft model. Ten male Fischer rats with C6 glioma (body weight = 220 ± 15 g) were investigated with (18)F-FMISO PET and steady-state inhalation method of (15)O-labelled gases PET...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28209912/detection-efficacy-of-hybrid-68-ga-psma-ligand-pet-ct-in-prostate-cancer-patients-with-biochemical-recurrence-after-primary-radiation-therapy-defined-by-phoenix-criteria
#3
Ingo Einspieler, Isabel Rauscher, Charlotte Düwel, Markus Krönke, Christoph Rischpler, Gregor Habl, Sabrina Dewes, Armin Ott, Hans-Jürgen Wester, Markus Schwaiger, Tobias Maurer, Matthias Eiber
The aim of this retrospective study was to evaluate the detection rate of Glu-NH-CO-NH-Lys-(Ahx)-[(68)Ga(HBED-CC)] ((68)Ga-PSMA ligand) positron emission tomography/computed tomography (PET/CT) in patients with biochemical recurrent prostate cancer (PC) defined by Phoenix criteria after external beam radiotherapy (EBRT) or brachytherapy as primary treatment. Methods: 118 patients were finally eligible for this retrospective analysis with a median prostate-specific antigen (PSA) of 6.4 ng/mL (range: 2.2-158...
February 16, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28208155/pet-mr-in-invasive-ductal-breast-cancer-correlation-between-imaging-markers-and-histological-phenotype
#4
Onofrio Antonio Catalano, Gary Lloyd Horn, Alberto Signore, Carlo Iannace, Maria Lepore, Mark Vangel, Angelo Luongo, Marco Catalano, Constance Lehman, Marco Salvatore, Andrea Soricelli, Ciprian Catana, Umar Mahmood, Bruce Robert Rosen
BACKGROUND: Differences in genetics and receptor expression (phenotypes) of invasive ductal breast cancer (IDC) impact on prognosis and treatment response. Immunohistochemistry (IHC), the most used technique for IDC phenotyping, has some limitations including its invasiveness. We explored the possibility of contrast-enhanced positron emission tomography magnetic resonance (CE-FDG PET/MR) to discriminate IDC phenotypes. METHODS: 21 IDC patients with IHC assessment of oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor-2 (HER2), and antigen Ki-67 (Ki67) underwent CE-FDG PET/MR...
February 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28195905/value-of-intratumoral-metabolic-heterogeneity-and-quantitative-18f-fdg-pet-ct-parameters-to-predict-prognosis-in-patients-with-hpv-positive-primary-oropharyngeal-squamous-cell-carcinoma
#5
Esther Mena, Mehdi Taghipour, Sara Sheikhbahaei, Abhinav K Jha, Arman Rahmim, Lilja Solnes, Rathan M Subramaniam
OBJECTIVE: The aim of this study was to evaluate the impact of intratumoral metabolic heterogeneity and quantitative FDG PET/CT imaging parameters for predicting patient outcomes in primary oropharyngeal squamous cell cancer (OPSCC). PATIENTS AND METHODS: We retrospectively investigated 105 patients with HPV-positive OPSCC. SUVmax and metabolic tumor volume (MTV) were measured for the primary tumors and when available for the metastatic sites. Primary tumor intratumoral metabolic heterogeneity was calculated as the area under a cumulative SUV volume histograms curve (AUC-CSH)...
February 13, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28192877/effect-of-hyperglycemia-on-brain-and-liver-18-f-fdg-standardized-uptake-value-fdg-suv-measured-by-quantitative-positron-emission-tomography-pet-imaging
#6
Benjamin L Viglianti, Ka Kit Wong, Stephanie M Wimer, Aishwarya Paraeswaran, Bin Nan, Christy Ky, Danyelle M Townsend, Domenico Rubello, Kirk A Frey, Milton D Gross
PURPOSE: Blood glucose is routinely measured prior to (18)F-fluorodeoxyglucose (FDG) administration in positron emission tomography (PET) imaging to identify hyperglycemia that may affect image quality. In this study we explore the effects of blood glucose levels upon semi-quantitative standardized uptake value (SUV) measurements of target organs and tissues of interest and in particular address the relationship of blood glucose to FDG accumulation in the brain and liver. METHODS: 436 FDG PET/CT consecutive studies performed for oncology staging in 229 patients (226 male) at the Ann Arbor Veterans Administration Healthcare System were reviewed...
February 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28191877/a-virtual-clinical-trial-comparing-static-versus-dynamic-pet-imaging-in-measuring-response-to-breast-cancer-therapy
#7
Kristen A Wangerin, Mark Muzi, Lanell Peterson, Hannah Linden, Alena Novakova, David Mankoff, Paul Kinahan
OBJECTIVE: We developed a method to evaluate variations in the PET imaging process in order to characterize the relative ability of static and dynamic metrics to measure breast cancer response to therapy in a clinical trial setting. METHODS: We performed a virtual clinical trial by generating 540 i.i.d. PET imaging study realizations for each of 22 original dynamic fluorodeoxyglucose (18F-FDG) breast cancer patient studies pre- and post-therapy. Each noise realization accounted for known sources of uncertainty in the imaging process, such as biological variability and SUV uptake time...
February 13, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28188325/correlation-between-tumour-characteristics-suv-measurements-metabolic-tumour-volume-tlg-and-textural-features-assessed-with-18-f-fdg-pet-in-a-large-cohort-of-oestrogen-receptor-positive-breast-cancer-patients
#8
Charles Lemarignier, Antoine Martineau, Luis Teixeira, Laetitia Vercellino, Marc Espié, Pascal Merlet, David Groheux
PURPOSE: The study was designed to evaluate 1) the relationship between PET image textural features (TFs) and SUVs, metabolic tumour volume (MTV), total lesion glycolysis (TLG) and tumour characteristics in a large prospective and homogenous cohort of oestrogen receptor-positive (ER+) breast cancer (BC) patients, and 2) the capability of those parameters to predict response to neoadjuvant chemotherapy (NAC). METHODS: 171 consecutive patients with large or locally advanced ER+ BC without distant metastases underwent an (18)F-FDG PET examination before NAC...
February 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28186981/18f-fdg-18f-fes-standardized-uptake-value-ratio-determined-using-pet-predicts-prognosis-in-uterine-sarcoma
#9
Makoto Yamamoto, Tetsuya Tsujikawa, Shizuka Yamada, Tetsuji Kurokawa, Akiko Shinagawa, Yoko Chino, Tetsuya Mori, Yasushi Kiyono, Hidehiko Okazawa, Yoshio Yoshida
We investigated whether 16α-[18F]-fluoro-17β-estradiol (18F-FES) and 18F-fluoro-deoxyglucose (FDG) uptake measured using positron emission tomography (PET) predicted prognosis in 18 patients with different histological subtypes of uterine sarcoma. Standardized uptake values (SUVs) and 18F-FDG/18F-FES SUV ratios were determined, and their correlations with progression-free (PFS) and overall survival (OS) were examined. Ten patients died from local recurrence or metastasis, and one more experienced recurrence, during the at least 36-month follow-up period...
February 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28183994/optimal-reference-region-to-measure-longitudinal-amyloid-beta-change-with-18-f-florbetaben-pet
#10
Santiago Bullich, Victor L Villemagne, Ana M Catafau, Aleksandar Jovalekic, Norman Koglin, Christopher C Rowe, Susan De Santi
Accurate measurement of changes in amyloid-beta (Aβ) deposition over time is important in longitudinal studies, particularly in anti-Aβ therapeutic trials. To achieve this, the optimal reference region (RR) must be selected to reduce variance of Aβ positron emission tomography (PET) measurements, allowing early detection of treatment efficacy. The aim of this study was to determine the RR that allows earlier detection of subtle Aβ changes using (18)F florbetaben (FBB) PET. Methods: Forty-five patients with mild cognitive impairment (MCI) (72...
February 9, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28176243/the-extent-to-which-standardized-uptake-values-reflect-fdg-phosphorylation-in-the-liver-and-spleen-as-functions-of-time-after-injection-of-18-f-fluorodeoxyglucose
#11
Georgia Keramida, Constantinos D Anagnostopoulos, A Michael Peters
PURPOSE: In FDG PET/CT, standardized uptake value (SUV) is used to measure metabolic activity but detects un-phosphorylated FDG as well as phosphorylated FDG (FDG6P). Our aim was to determine the proportions of intrahepatic and intrasplenic FDG that are phosphorylated after FDG injection and compare them with SUVs. METHODS: Sixty patients undergoing whole-body PET/CT 60 min post-injection of FDG first had dynamic PET imaging for 30 min with measurement of hepatic and splenic FDG clearances using Patlak-Rutland analysis...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28169466/highly-stretchable-and-uv-curable-elastomers-for-digital-light-processing-based-3d-printing
#12
Dinesh K Patel, Amir Hosein Sakhaei, Michael Layani, Biao Zhang, Qi Ge, Shlomo Magdassi
Stretchable UV curable (SUV) elastomers can be stretched by up to 1100% and are suitable for digital light processing (DLP) based 3D printing technology. DLP printing of these SUV elastomers enables the direct creation of highly deformable complex 3D hollow structures such as balloons, soft actuators, grippers, and Bucky ball electronical switches.
February 7, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28168681/normal-model-construction-for-statistical-image-analysis-of-torso-fdg-pet-images-based-on-anatomical-standardization-by-ct-images-from-fdg-pet-ct-devices
#13
Kenshiro Takeda, Takeshi Hara, Xiangrong Zhou, Tetsuro Katafuchi, Masaya Kato, Satoshi Ito, Keiichi Ishihara, Shinichiro Kumita, Hiroshi Fujita
PURPOSE: A better understanding of the standardized uptake value (SUV) ranges of fludeoxyglucose positron emission tomography (FDG-PET) is crucial for radiologists. We have developed a statistical image analysis method for FDG-PET imaging of the torso, based on comparisons with normal data. The purpose of this study was to verify the accuracy of the normal model and usefulness of the statistical image analysis method by using typical cancer cases in the liver, lungs, and abdomen. METHODS: Our study and the data collection (49 normal and 34 abnormal cases, in terms of PET/CT findings) were approved by the institutional review board...
February 6, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28168589/impact-of-pet-acquisition-durations-on-image-quality-and-lesion-detectability-in-whole-body-68-ga-psma-pet-mri
#14
Benjamin Noto, Florian Büther, Katharina Auf der Springe, Nemanja Avramovic, Walter Heindel, Michael Schäfers, Thomas Allkemper, Lars Stegger
BACKGROUND: While (68)Ga-PSMA PET-MRI might be superior to PET-CT with regard to soft tissue assessment in prostate cancer evaluation, it is also known to potentially introduce additional PET image artefacts. Therefore, the impact of PET acquisition duration and attenuation data on artefact occurrence, lesion detectability, and quantification was investigated. To this end, whole-body PET list mode data from 12 patients with prostate cancer were acquired 1 h after injection of 2 MBq/kg [(68)Ga]HBED-CC-PSMA on a hybrid PET-MRI system...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28153955/bi-modal-molecular-imaging-of-porcine-urinary-bladder-sentinel-lymph-nodes
#15
Hak J Lee, Christopher V Barback, Carl K Hoh, Qin Zhengtao, Kader Kareem, Hall J David, David R Vera, Christopher J Kane
: The primary objective was to test the ability of a laparoscopic camera system to detect the fluorescent signal emanating from sentinel lymph nodes approximately two days after injection and imaging of a positron-emitting molecular imaging agent into the submucosa of the porcine urinary bladder. METHODS: Three female pigs underwent a submucosal injection of the bladder with fluorescent-tagged tilmanocept, radiolabeled with both gallium-68 (68Ga) and technetium-99m (99mTc)...
February 2, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28151888/pediatric-hodgkin-lymphoma-predictive-value-of-interim-18f-fdg-pet-ct-in-therapy-response-assessment
#16
Cristina Ferrari, Artor Niccoli Asabella, Nunzio Merenda, Corinna Altini, Margherita Fanelli, Paola Muggeo, Francesco De Leonardis, Teresa Perillo, Nicola Santoro, Giuseppe Rubini
We investigated the prognostic value of interim F-FDG PET/CT (PET-2) in pediatric Hodgkin lymphoma (pHL), evaluating both visual and semiquantitative analysis.Thirty pHL patients (age ≤16) underwent serial F-FDG PET/CT: at baseline (PET-0), after 2 cycles of chemotherapy (PET-2) and at the end of first-line chemotherapy (PET-T). PET response assessment was carried out visually according to the Deauville Score (DS), as well as semiquantitatively by using the semiquantitative parameters reduction from PET-0 to PET-2 (ΔΣSUVmax0-2, ΔΣSUVmean0-2)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28150226/can-spatiotemporal-fluoride-18-f-uptake-be-used-to-assess-bone-formation-in-the-tibia-a-longitudinal-study-using-pet-ct
#17
Henrik Lundblad, Charlotte Karlsson-Thur, Gerald Q Maguire, Cathrine Jonsson, Marilyn E Noz, Michael P Zeleznik, Lars Weidenhielm
BACKGROUND: When a bone is broken for any reason, it is important for the orthopaedic surgeon to know how bone healing is progressing. There has been resurgence in the use of the fluoride ((18)F(-)) ion to evaluate various bone conditions. This has been made possible by availability of positron emission tomography (PET)/CT hybrid scanners together with cyclotrons. Absorbed on the bone surface from blood flow, (18)F(-) attaches to the osteoblasts in cancellous bone and acts as a pharmacokinetic agent, which reflects the local physiologic activity of bone...
February 1, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28149920/hybrid-positron-emission-tomography-segmentation-of-heterogeneous-lung-tumors-using-3d-slicer-improved-growcut-algorithm-with-threshold-initialization
#18
Hannah Mary T Thomas, Devadhas Devakumar, Balukrishna Sasidharan, Stephen R Bowen, Danie Kingslin Heck, E James Jebaseelan Samuel
This paper presents an improved GrowCut (IGC), a positron emission tomography-based segmentation algorithm, and tests its clinical applicability. Contrary to the traditional method that requires the user to provide the initial seeds, the IGC algorithm starts with a threshold-based estimate of the tumor and a three-dimensional morphologically grown shell around the tumor as the foreground and background seeds, respectively. The repeatability of IGC from the same observer at multiple time points was compared with the traditional GrowCut algorithm...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28144403/multimodality-functional-imaging-using-dw-mri-and-18-f-fdg-pet-ct-during-radiation-therapy-for-human-papillomavirus-negative-head-and-neck-squamous-cell-carcinoma-meixoeiro-hospital-of-vigo-experience
#19
David Aramburu Núñez, Antonio Lopez Medina, Moisés Mera Iglesias, Francisco Salvador Gomez, Abhay Dave, Vaios Hatzoglou, Ramesh Paudyal, Alfonso Calzado, Joseph O Deasy, Amita Shukla-Dave, Victor M Muñoz
AIM: To noninvasively investigate tumor cellularity measured using diffusion-weighted magnetic resonance imaging (DW-MRI) and glucose metabolism measured by (18)F-labeled fluorodeoxyglucose positron emission tomography/computed tomography ((18)F-FDG-PET/CT) during radiation therapy (RT) for human papillomavirus negative (HPV-) head and neck squamous cell carcinoma (HNSCC). METHODS: In this prospective study, 6 HPV- HNSCC patients underwent a total of 34 multimodality imaging examinations DW-MRI at 1...
January 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28144138/in-vitro-determination-of-the-efficacy-of-scorpion-venoms-as-anti-cancer-agents-against-colorectal-cancer-cells-a-nano-liposomal-delivery-approach
#20
Abdulrahman K Al-Asmari, Zabih Ullah, Ali Al Balowi, Mozaffarul Islam
The use of liposomes in biological and medicinal sciences is a relatively new approach. The liposomal strategy greatly depends on the technological advancement in the formation of vesicles of various sizes and properties. In the current study, we encapsulated the venoms obtained from medically important scorpions such as Androctonus bicolor (AB), Androctonus crassicauda (AC), and Leiurus quinquestriatus (LQ). To begin with, our first and foremost aim was to prepare biocompatible and biodegradable nanovesicles...
2017: International Journal of Nanomedicine
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