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https://www.readbyqxmd.com/read/29768331/the-value-of-18f-fdg-pet-ct-in-patient-with-neurofibromatosis-type-1-a-case-report-and-literature-review
#1
Jiazhong Ren, Guoren Yang, Jing Zhou, Zheng Fu
RATIONALE: Neurofibromatosis type one (NF1) is characterized by cutaneous and nervous lesions, and the tendency to form plexiform neurofibromas (PNFs). PNFs may undergo malignant transformation into a malignant peripheral nerve sheath tumors (MPNSTs). MPNSTs often carry an significant morbidity and mortality. PATIENT CONCERNS: A 17-year-old man with gradually increased multiple subcutaneous soft lesions. He also presented with numerous lentigines and multiple café-au-lait macules on his body...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29766311/monitoring-scanner-calibration-using-the-image-derived-arterial-blood-suv-in-whole-body-fdg-pet
#2
Jens Maus, Frank Hofheinz, Ivayla Apostolova, Michael C Kreissl, Jörg Kotzerke, Jörg van den Hoff
BACKGROUND: The current de facto standard for quantification of tumor metabolism in oncological whole-body PET is the standardized uptake value (SUV) approach. SUV determination requires accurate scanner calibration. Residual inaccuracies of the calibration lead to biased SUV values. Especially, this can adversely affect multicenter trials where it is difficult to ensure reliable cross-calibration across participating sites. The goal of the present work was the evaluation of a new method for monitoring scanner calibration utilizing the image-derived arterial blood SUV (BSUV) averaged over a sufficiently large number of whole-body FDG-PET investigations...
May 15, 2018: EJNMMI Research
https://www.readbyqxmd.com/read/29762247/lymph-node-with-the-highest-fdg-uptake-predicts-distant-metastasis-free-survival-in-patients-with-locally-advanced-nasopharyngeal-carcinoma
#3
Hojin Cho, Sung Hoon Kim, Hyunjeong Kim, Yoon Woo Koh, Se-Heon Kim, Eun Chang Choi, Mijin Yun
PURPOSE: Distant failure is a major concern in patients with nasopharyngeal carcinoma. We evaluated whether the metabolic features on 18F-FDG PET/CT can predict distant metastasis-free survival (DMFS) in patients with locally advanced nasopharyngeal carcinoma. METHODS: We retrospectively reviewed 51 patients stage III, IVA, and IVB nasopharyngeal carcinoma who underwent 18F-FDG PET/CT at staging. The SUVmax for the primary site and the lymph nodes with the highest uptake as well as at the farthest station were divided by the SUVmean of the background liver (TLR, NLR-H, and NLR-F, respectively)...
May 14, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29756042/skeletal-muscle-metrics-on-clinical-18-f-fdg-pet-ct-predict-health-outcomes-in-patients-with-sarcoma
#4
Brent Foster, Robert D Boutin, Leon Lenchik, David Gedeon, Yu Liu, Vinay Nittur, Ramsey D Badawi, Chin-Shang Li, Robert J Canter, Abhijit J Chaudhari
The aim of this study was to determine the association of measures of skeletal muscle determined from 18 F-FDG PET/CT with health outcomes in patients with soft-tissue sarcoma. 14 patients (8 women and 6 men; mean age 66.5 years) with sarcoma had PET/CT examinations. On CTs of the abdomen and pelvis, skeletal muscle was segmented, and cross-sectional muscle area, muscle volume, and muscle attenuation were determined. Within the segmented muscle, intramuscular fat area, volume, and density were derived. On PET images, the standardized uptake value (SUV) of muscle was determined...
2018: Journal of Nature and Science
https://www.readbyqxmd.com/read/29755846/repeatability-of-fdg-pet-ct-metrics-assessed-in-free-breathing-and-deep-inspiration-breath-hold-in-lung-cancer-patients
#5
Lotte Nygård, Marianne C Aznar, Barbara M Fischer, Gitte F Persson, Charlotte B Christensen, Flemming L Andersen, Mirjana Josipovic, Seppo W Langer, Andreas Kjær, Ivan R Vogelius, Søren M Bentzen
We measured the repeatability of FDG PET/CT uptake metrics when acquiring scans in free breathing (FB) conditions compared with deep inspiration breath hold (DIBH) for locally advanced lung cancer. Twenty patients were enrolled in this prospective study. Two FDG PET/CT scans per patient were conducted few days apart and in two breathing conditions (FB and DIBH). This resulted in four scans per patient. Up to four FDG PET avid lesions per patient were contoured. The following FDG metrics were measured in all lesions and in all four scans: Standardized uptake value (SUV)peak , SUVmax , SUVmean , metabolic tumor volume (MTV) and total lesion glycolysis (TLG), based on an isocontur of 50% of SUVmax ...
2018: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29755841/quantitative-pet-of-liver-functions
#6
REVIEW
Susanne Keiding, Michael Sørensen, Kim Frisch, Lars C Gormsen, Ole Lajord Munk
Improved understanding of liver physiology and pathophysiology is urgently needed to assist the choice of new and upcoming therapeutic modalities for patients with liver diseases. In this review, we focus on functional PET of the liver: 1) Dynamic PET with 2-deoxy-2-[18 F]fluoro- D -galactose (18 F-FDGal) provides quantitative images of the hepatic metabolic clearance K met (mL blood/min/mL liver tissue) of regional and whole-liver hepatic metabolic function. Standard-uptake-value ( SUV ) from a static liver 18 F-FDGal PET/CT scan can replace K met and is currently used clinically...
2018: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29755685/selected-pet-radiomic-features-remain-the-same
#7
Tetsuya Tsujikawa, Hideaki Tsuyoshi, Masafumi Kanno, Shizuka Yamada, Masato Kobayashi, Norihiko Narita, Hirohiko Kimura, Shigeharu Fujieda, Yoshio Yoshida, Hidehiko Okazawa
Purpose: We investigated whether PET radiomic features are affected by differences in the scanner, scan protocol, and lesion location using 18 F-FDG PET/CT and PET/MR scans. Results: SUV, TMR, skewness, kurtosis, entropy, and homogeneity strongly correlated between PET/CT and PET/MR images. SUVs were significantly higher on PET/MR0-2 min and PET/MR0-10 min than on PET/CT in gynecological cancer ( p = 0.008 and 0.008, respectively), whereas no significant difference was observed between PET/CT, PET/MR0-2 min , and PET/MR0-10 min images in oral cavity/oropharyngeal cancer...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29755585/a-study-of-the-effect-of-the-front-end-styling-of-sport-utility-vehicles-on-pedestrian-head-injuries
#8
Guanjun Zhang, Qin Qin, Zheng Chen, Zhonghao Bai, Libo Cao
Background: The number of sport utility vehicles (SUVs) on China market is continuously increasing. It is necessary to investigate the relationships between the front-end styling features of SUVs and head injuries at the styling design stage for improving the pedestrian protection performance and product development efficiency. Methods: Styling feature parameters were extracted from the SUV side contour line. And simplified finite element models were established based on the 78 SUV side contour lines...
2018: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/29754276/-718-f-fdg-pet-ct-metabolic-tumor-parameters-and-radiomics-features-in-aggressive-non-hodgkin-s-lymphoma-as-predictors-of-treatment-outcome-and-survival
#9
Aatif Parvez, Noam Tau, Douglas Hussey, Manjula Maganti, Ur Metser
PURPOSE: To determine whether metabolic tumor parameters and radiomic features extracted from 18 F-FDG PET/CT (PET) can predict response to therapy and outcome in patients with aggressive B-cell lymphoma. METHODS: This institutional ethics board-approved retrospective study included 82 patients undergoing PET for aggressive B-cell lymphoma staging. Whole-body metabolic tumor volume (MTV) using various thresholds and tumor radiomic features were assessed on representative tumor sites...
May 12, 2018: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29751203/effect-of-adipose-tissue-volume-on-prognosis-in-patients-with-non-small-cell-lung-cancer
#10
Jeong Won Lee, Ho Sung Lee, Ju Ock Na, Sang Mi Lee
OBJECTIVE: This study evaluated the relationship between adipose tissue volume and survival in patients with non-small cell lung cancer (NSCLC). METHODS: We retrospectively included 171 NSCLC patients who underwent staging 18 F-fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) and subsequent curative surgical resection or definite chemoradiotherapy. Maximum standardized uptake value (SUV) of lung cancer normalized by lean body mass (SULmax) and volume and mean SUV of subcutaneous adipose tissue (SAT) and visceral adipose tissue (VAT) were derived from PET/CT images...
May 4, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29750538/stereotactic-body-radiation-therapy-for-liver-oligometastases-predictive-factors-of-local-response-by-18f-fdg-pet-ct
#11
Rosario Mazzola, Sergio Fersino, Pierpaolo Alongi, Gioacchino Di Paola, Fabiana Gregucci, Dario Aiello, Umberto Tebano, Stefano Pasetto, Ruggero Ruggieri, Matteo Salgarello, Filippo Alongi
OBJECTIVE: to investigate metabolic parameters as predictive of local response after Stereotactic Body Radiation Therapy (SBRT) for liver-oligometastases Methods: Inclusion criteria of the present retrospective study were: a) liver oligometastases with controlled primary tumor; b) absence of progressive disease ≥6 months; c) metastases ≤ 3; d) evaluation of SBRT-response by means of 18-FDG-PET/CT for at least two subsequent evaluations; e) Karnofsky performance status >80; f) life-expectancy >6 months...
May 11, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29748235/p-glycoprotein-abcb1-inhibits-the-influx-and-increases-the-efflux-of-11-c-metoclopramide-across-the-blood-brain-barrier-a-pet-study-on-non-human-primates
#12
Sylvain Auvity, Fabien Caillé, Solène Marie, Catriona Wimberley, Martin Bauer, Oliver Langer, Irène Buvat, Sébastien Goutal, Nicolas Tournier
Rationale : PET imaging using radiolabeled high-affinity substrates of P-glycoprotein (ABCB1) has convincingly revealed the role of this major efflux transporter in limiting the influx of its substrates from blood into the brain across the blood-brain barrier (BBB). Many drugs, such as metoclopramide, are weak ABCB1 substrates and distribute into the brain even when ABCB1 is fully functional. In this study, we used kinetic modeling and validated simplified methods to highlight and quantify the impact of ABCB1 on the BBB influx and efflux of 11 C-metoclopramide, as a model weak ABCB1 substrate, in non-human primates...
May 10, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29745092/therapeutic-benefits-of-neoadjuvant-and-post-operative-denosumab-on-sacral-giant-cell-tumor-a-retrospective-cohort-study-of-30-cases
#13
Zhongyan Chen, Yi Yang, Wei Guo, Rongli Yang, Xiaodong Tang, Taiqiang Yan, Tao Ji, Lu Xie, Jie Xu, Jun Wang
PURPOSE: Denosumab, a new monoclonal antibody that inhibits receptor activator for nuclear factor Kβ ligand (RANKL), has recently been approved by FDA for the treatment of aggressive giant cell tumor of bone (GCTB). So we initiated this study to evaluate the clinical benifits of denosumab used preoperatively or postoperatively. METHODS: Patients diagnosed with classic sacral GCT without metastasis were included in this study. Patients were assigned into 3 groups according to the use of denosumab: control group 1, post-operative group 2 and neoadjuvant group 3...
March 2018: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29743733/bone-marrow-uptake-of-18-f-fluorodeoxyglucose-in-hodgkin-lymphoma-without-bone-involvement-comparison-between-patients-with-and-without-b-symptoms
#14
Rômulo Hermeto Bueno do Vale, Daniela Andrade Ferraro, Paulo Schiavom Duarte, Giovana Carvalho, Marcos Santos Lima, George Barbério Coura Filho, Marcelo Tatit Sapienza, Carlos Alberto Buchpiguel
Objective: To compare the degree of benign bone marrow uptake of 18 F-fluorodeoxyglucose (18 F-FDG) between Hodgkin lymphoma patients with and without B symptoms. Materials and Methods: We analyzed the medical charts of 74 Hodgkin lymphoma patients who underwent 18 F-FDG positron emission tomography/computed tomography (PET/CT) prior to the initiation of therapy between October 2010 and September 2013. In all of the patients, the bone marrow biopsy was negative and the 18 F-FDG PET/CT images did not suggest bone marrow involvement...
March 2018: Radiologia Brasileira
https://www.readbyqxmd.com/read/29743108/-18-fdg-pet-ct-identifies-histopathological-non-responders-after-neoadjuvant-chemotherapy-in-locally-advanced-gastric-and-cardia-cancer-cohort-study
#15
Paul M Schneider, Dilmurodjon Eshmuminov, Tamara Rordorf, Diana Vetter, Patrick Veit-Haibach, Achim Weber, Peter Bauerfeind, Panagiotis Samaras, Kuno Lehmann
BACKGROUND: Pathologic response to neoadjuvant chemotherapy (neoCTX) is a prognostic factor in many cancer types, and early prediction would help to modify treatment. In patients with gastric and esophagogastric junction (AEG) cancer, the accuracy of FDG PET-CT to predict early pathologic response after neoadjuvant chemotherapy (neoCTX) is currently not known. METHODS: From a consecutive cohort of 72 patients, 44 patients with resectable, locally-advanced gastric cancer or AEG Siewert type II and III received neoCTX after primary staging with endoscopic ultrasound, PET-CT and laparoscopy...
May 9, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29743027/quantification-of-fdg-pet-ct-with-delayed-imaging-in-patients-with-newly-diagnosed-recurrent-breast-cancer
#16
Christina Baun, Kirsten Falch, Oke Gerke, Jeanette Hansen, Tram Nguyen, Abass Alavi, Poul-Flemming Høilund-Carlsen, Malene G Hildebrandt
BACKGROUND: Several studies have shown the advantage of delayed-time-point imaging with 18F-FDG-PET/CT to distinguish malignant from benign uptake. This may be relevant in cancer diseases with low metabolism, such as breast cancer. We aimed at examining the change in SUV from 1 h (1h) to 3 h (3h) time-point imaging in local and distant lesions in patients with recurrent breast cancer. Furthermore, we investigated the effect of partial volume correction in the different types of metastases, using semi-automatic quantitative software (ROVER™)...
May 9, 2018: BMC Medical Imaging
https://www.readbyqxmd.com/read/29742723/variations-of-the-liver-standardized-uptake-value-in-relation-to-background-blood-metabolism-an-2-18f-fluoro-2-deoxy-d-glucose-positron-emission-tomography-computed-tomography-study-in-a-large-population-from-china
#17
Guobing Liu, Yan Hu, Yanzhao Zhao, Haojun Yu, Pengcheng Hu, Hongcheng Shi
To investigate the influence of background blood metabolism on liver uptake of 2-[F]fluoro-2-deoxy-D-glucose (F-FDG) and search for an appropriate corrective method.Positron emission tomography/computed tomography (PET/CT) and common serological biochemical tests of 633 healthy people were collected retrospectively. The mean standardized uptake value (SUV) of the liver, liver artery, and portal vein (i.e., SUVL, SUVA, and SUVP) were measured. SUVL/A was calculated as SUVL/SUVA, while SUVL/P was calculated as SUVL/SUVP...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29730251/effects-of-prefrontal-theta-burst-stimulation-on-brain-function-in-treatment-resistant-depression-a-randomized-sham-controlled-neuroimaging-study
#18
Cheng-Ta Li, Mu-Hong Chen, Chi-Hung Juan, Ren-Shyan Liu, Wei-Chen Lin, Ya-Mei Bai, Tung-Ping Su
BACKGROUND: Theta-burst transcranial magnetic stimulation (TBS) can quickly modulate brain activity and can be used to treat treatment-resistant depression (TRD). Whole-brain analytical research has revealed that left high-frequency PFC rTMS modulates brain activity in anterior cingulate cortex (ACC) and the fronto-cingulo-temporal circuit. We aimed to investigate whether the prefrontal TBS's antidepressant mechanisms involve these regions. METHODS: We designed a randomized, double-blind, sham-controlled neuroimaging study to investigate different mechanisms of TBS [i...
April 23, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29728519/first-in-human-pet-study-of-3-novel-tau-radiopharmaceuticals-11-c-ro6924963-11-c-ro6931643-and-18-f-ro6958948
#19
Dean F Wong, Robert Comley, Hiroto Kuwabara, Paul B Rosenberg, Susan M Resnick, Susanne Ostrowitzki, Cristina Vozzi, Frank Boess, Esther Oh, Constantine G Lyketsos, Michael Honer, Luca Gobbi, Gregory Klein, Noble George, Lorena Gapasin, Kelly Kitzmiller, Joshua Roberts, Jeff Sevigny, Ayon Nandi, James R Brasic, Chakradhar Mishra, Madhav Thambisetty, Abhay Moghekar, Anil Mathur, Marilyn Albert, Robert F Dannals, Edilio Borroni
Background: [11 C]RO-963, [11 C]RO-643 and [18 F]RO-948 (previously referred as [11 C]RO6924963, [11 C]RO6931643, and [18 F]RO6958948, respectively) have been reported as promising PET tracers for tau imaging based on in vitro and preclinical PET data (1,2). Here we describe the first human evaluation of these novel radiotracers. Methods: Amyloid PET positive Alzheimer's disease (AD) patients and young healthy subjects (YC) each received two different tau tracers. Dynamic 90 min scans were obtained after bolus injection of [11 C]RO-963, [11 C]RO-643 or [18 F]RO-948...
May 4, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29728516/the-effect-of-including-bone-in-dixon-based-attenuation-correction-for-18-f-fluciclovine-pet-mri-of-prostate-cancer
#20
Mattijs Elschot, Kirsten M Selnæs, Håkon Johansen, Brage Krüger-Stokke, Helena Bertilsson, Tone F Bathen
The objective of this study was to evaluate the effect of including bone in DIXON-based attenuation correction for 18 F-fluciclovine Positron Emission Tomography (PET) / Magnetic Resonance Imaging (MRI) of primary and recurrent prostate cancer. Methods: 18 F-fluciclovine PET data from two PET/MRI studies - one for staging of high-risk prostate cancer (28 patients) and one for diagnosis of recurrent prostate cancer (81 patients) - were reconstructed with a 4-compartment (reference) and 5-compartment attenuation map...
May 4, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
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