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https://www.readbyqxmd.com/read/28646645/comorbidity-assessment-in-patients-with-oral-squamous-cell-carcinoma-can-imaging-techniques-fludeoxyglucose-positron-emission-tomographic-computed-tomography-and-contrast-enhanced-computed-tomography-provide-additional-information
#1
Matthias Troeltzsch, Florian Andreas Probst, Axel Rominger, Ulrich Müller-Lisse, Monika Probst, Katharina Obermeier, Michael Ehrenfeld, Sven Otto
PURPOSE: This study evaluated the role of imaging staging examinations (positron-emission tomographic computed tomography [PET/CT] and contrast-enhanced computed tomography [ceCT]) for the assessment of the comorbidity status of patients with oral squamous cell carcinoma (OSCC). A binary null hypothesis was drafted: 1) imaging staging examinations do not augment knowledge about the comorbidity status of patients with OSCC and 2) there is no difference between PET/CT and ceCT in this regard...
May 31, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28646614/does-breast-mri-background-parenchymal-enhancement-indicate-metabolic-activity-qualitative-and-3d-quantitative-computer-imaging-analysis
#2
Eralda Mema, Victoria L Mango, Xiaotao Guo, Jenika Karcich, Randy Yeh, Ralph T Wynn, Binsheng Zhao, Richard S Ha
PURPOSE: To investigate whether the degree of breast magnetic resonance imaging (MRI) background parenchymal enhancement (BPE) is associated with the amount of breast metabolic activity measured by breast parenchymal uptake (BPU) of 18F-FDG on positron emission tomography / computed tomography (PET/CT). MATERIALS AND METHODS: An Institutional Review Board (IRB)-approved retrospective study was performed. Of 327 patients who underwent preoperative breast MRI from 1/1/12 to 12/31/15, 73 patients had 18F-FDG PET/CT evaluation performed within 1 week of breast MRI and no suspicious findings in the contralateral breast...
June 24, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28646594/prevalence-and-prognosis-of-low-volume-oligorecurrent-hormone-sensitive-prostate-cancer-amenable-to-lesion-ablative-therapy
#3
Aurélie De Bruycker, Bieke Lambert, Tom Claeys, Louke Delrue, Chamberlain Mbah, Gert De Meerleer, Geert Villeirs, Filip De Vos, Kathia De Man, Karel Decaestecker, Valérie Fonteyne, Nicolaas Lumen, Filip Ameye, Ignace Billiet, Steven Joniau, Friedl Vanhaverbeke, Wim Duthoy, Piet Ost
OBJECTIVES: To describe the anatomical patterns of PCa recurrence following primary therapy and investigate if patients with low-volume disease have a better prognosis as compared to their counterparts. MATERIAL AND METHODS: Patients eligible for a F18-choline PET-CT were entered in a prospective cohort study. Eligible patients had an asymptomatic biochemical recurrence following primary PCa treatment and testosterone levels >50 ng/ml. The number of lesions were counted per scan...
June 24, 2017: BJU International
https://www.readbyqxmd.com/read/28646463/patterns-of-failure-after-radical-prostatectomy-in-prostate-cancer-implications-for-radiation-therapy-planning-after-68-ga-psma-pet-imaging
#4
Kilian Schiller, K Sauter, S Dewes, M Eiber, T Maurer, J Gschwend, S E Combs, G Habl
BACKGROUND: Salvage radiotherapy (SRT) after radical prostatectomy (RPE) and lymphadenectomy (LAE) is the appropriate radiotherapy option for patients with persistent/ recurrent prostate cancer (PC). (68)Ga-PSMA-PET imaging has been shown to accurately detect PC lesions in a primary setting as well as for local recurrence or for lymph node (LN) metastases. OBJECTIVE: In this study we evaluated the patterns of recurrence after RPE in patients with PC, putting a highlight on the differentiation between sites that would have been covered by a standard radiation therapy (RT) field in consensus after the RTOG consensus and others that would have not...
June 23, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28646462/diagnostic-utility-of-pet-ct-with-18-f-dopa-and-18-f-fdg-in-persistent-or-recurrent-medullary-thyroid-carcinoma-the-importance-of-calcitonin-and-carcinoembryonic-antigen-cutoff
#5
Ana Reyes Romero-Lluch, Juan Ignacio Cuenca-Cuenca, Raquel Guerrero-Vázquez, Antonio Jesús Martínez-Ortega, Juan Luis Tirado-Hospital, Isabel Borrego-Dorado, Elena Navarro-González
PURPOSE: This study sought to evaluate and compare the utility of 18-F-fluorodihydroxyphenylalanine ((18)F-DOPA) and 18-F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) for identification of lesions in patients with recurrent medullary thyroid carcinoma (MTC). In addition, we analyzed the correlation between the calcitonin (Ct), carcinoembryonic antigen (CEA) levels, each doubling time (DT), and PET positivity. We evaluated the reliability of the 150 pg/mL Ct cutoff set by the American Thyroid Association guidelines for further imaging (including (18)F-DOPA PET/CT)...
June 23, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28646331/textural-features-of-18-f-fdg-pet-after-two-cycles-of-neoadjuvant-chemotherapy-can-predict-pcr-in-patients-with-locally-advanced-breast-cancer
#6
Lin Cheng, Jianping Zhang, Yujie Wang, Xiaoli Xu, Yongping Zhang, Yingjian Zhang, Guangyu Liu, Jingyi Cheng
OBJECTIVE: This study was designed to evaluate the utility of textural features for predicting pathological complete response (pCR) to neoadjuvant chemotherapy (NAC). METHODS: Sixty-one consecutive patients with locally advanced breast cancer underwent (18)F-FDG PET/CT scanning at baseline and after the second course of NAC. Changes to imaging parameters [maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), total lesion glycolysis (TLG)] and textural features (entropy, coarseness, skewness) between the 2 scans were measured by two independent radiologists...
June 23, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28646014/the-impact-of-68-ga-psma-pet-ct-on-management-intent-in-prostate-cancer-results-of-an-australian-prospective-multicenter-study
#7
Paul J Roach, Roslyn Francis, Louise Emmett, Edward Hsiao, Andrew Kneebone, George Hruby, Thomas Eade, Quoc Nguyen, Ben Thompson, Tom Cusick, Michael McCarthy, Colin Tang, Bao Ho, Philip Stricker, Andrew Scott
(68)Ga-PSMA PET/CT scanning has been shown to be more sensitive than conventional imaging techniques in patients with prostate cancer. This prospective Australian multicenter study assessed whether (68)Ga-PSMA PET/CT imaging impacts on management intent in patients with primary or recurrent prostate cancer. Methods: Prior to undertaking (68)Ga-PSMA PET imaging, referring medical specialists completed a questionnaire detailing relevant demographic and clinical data as well as their proposed management plan. A separate follow up questionnaire was completed after the (68)Ga-PSMA PET/CT scan results were available to determine whether their management plan would change...
June 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28646013/doxorubicin-effect-on-myocardial-metabolism-as-a-pre-requisite-for-subsequent-development-of-cardiac-toxicity-a-translational-18-f-fdg-pet-ct-observation
#8
Matteo Bauckneht, Giulia Ferrarazzo, Francesco Fiz, Silvia Morbelli, Matteo Sarocchi, Fabio Pastorino, Alberto Ghidella, Elena Pomposelli, Maurizio Miglino, Pietro Ameri, Laura Emionite, Flavia Ticconi, Eleonora Arboscello, Ambra Buschiazzo, Elena Augusta Massimelli, Salvatore Fiordoro, Anna Borra, Vanessa Cossu, Annalisa Bozzano, Adalberto Ibatici, Mirco Ponzoni, Paolo Spallarossa, Andrea Gallamini, Paolo Bruzzi, Gianmario Sambuceti, Cecilia Marini
The present translational study aimed to verify whether serial (18)F-fluoro-deoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT), predicts doxorubicin cardiotoxicity. Methods: Fifteen athymic mice were treated with intravenous administration of saline (n = 5), doxorubicin 5 mg/Kg (n = 5) or doxorubicin 7.5 mg/Kg (n = 5) and submitted to dynamic microPET scan to estimate left ventricular glucose consumption (LV-MRGlu) before and after chemotherapy. Thereafter, we retrospectively identified 69 patients successfully treated with Adriamycin, Bleomycin, Vinblastine, and Dacarbazine (ABVD) regimen for Hodgkin's Disease (HD) and submitted to four consecutive FDG-PET/CT scans...
June 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28646012/scatter-correction-with-combined-single-scatter-simulation-and-monte-carlo-simulation-scaling-improved-the-visual-artifacts-and-quantification-in-3d-brain-pet-ct-imaging-with-15-o-gas-inhalation
#9
Keiichi Magota, Tohru Shiga, Yukari Asano, Daiki Shinyama, Jinghan Ye, Amy E Perkins, Piotr J Maniawski, Takuya Toyonaga, Kentaro Kobayashi, Kenji Hirata, Chietsugu Katoh, Naoya Hattori, Nagara Tamaki
In three-dimensional positron emission tomography (PET)/computed tomography (CT) imaging of the brain with (15)O-gas inhalation, high radioactivity in the face mask creates cold artifacts and affects the quantitative accuracy when scatters is corrected by conventional methods (e.g., single-scatter simulation [SSS] with tail-fitting scaling [TFS-SSS]). Here we examined the validity of a newly developed scatter correction method that combines SSS with a scaling factor calculated by Monte Carlo simulation (MCS-SSS)...
June 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28645683/a-single-brain-metastasis-seen-on-68-ga-psma-pet-ct-in-recurrent-of-breast-cancer
#10
S S Medina-Ornelas, F O García-Pérez, C Medel-Gamez, E Paredes-Amoroto
No abstract text is available yet for this article.
June 20, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28645096/incidental-focal-uptake-in-the-breast-and-axilla-on-fdg-pet-clinical-considerations-and-differential-diagnosis
#11
Andrea L Magee, Brittany Z Dashevsky, Kayleen Jahangir, Kirti Kulkarni
Incidental focal FDG uptake in the breast or axilla on PET/CT performed for evaluation of extra-mammary primary disease presents a diagnostic challenge. Radiologists must consider a broad differential diagnosis, assess clinical history, and judiciously employ other imaging modalities such as mammography, ultrasound and MRI in the pursuit of findings which help narrow the differential diagnosis. Tissue sampling may be reserved for nondiagnostic imaging scenarios.
June 15, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28644040/hypoxic-pulmonary-vasoconstriction-does-not-explain-all-regional-perfusion-redistribution-in-asthma
#12
Vanessa J Kelly, Kathryn A Hibbert, Puja Kohli, Mamary Kone, Elliot E Greenblatt, Jose G Venegas, Tilo Winkler, R Scott Harris
RATIONALE: Regional hypoventilation in bronchoconstricted asthmatics is spatially associated with reduced perfusion, which is proposed to result from Hypoxic Pulmonary Vasoconstriction (HPV). Our study aimed to determine the role of HPV in the regional perfusion redistribution in bronchoconstricted asthmatics. METHODS: Eight asthmatics completed PET-CT lung imaging at baseline and after bronchoconstriction, breathing either Room Air or 80% Oxygen (80%O2, separate days)...
June 23, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28643978/-diagnosis-and-management-of-gastro-esophageal-junction-tumor
#13
Mickael Chevallay, Minoa Jung, Nadja Niclauss, Philippe Morel, Stefan Mönig
At the border between the esophagus and the stomach, gastro-esophageal junction tumors require a specific management that cannot be simplified to either of these two organs. Staging work-up with endoscopy, CT-Scan and PET-Scan, is essential because it will condition the choice of neo-adjuvant treatment. Surgery remains the only curative treatment and should be undergone in specialized center.
June 14, 2017: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28643307/-application-of-magnetic-resonance-in-non-operative-treatment-strategy-for-rectal-cancer
#14
Yi Wang, Gong Chen
The primary curative modality for localized rectal cancer is total mesorectal excision (TME). Local control rate of rectal cancer has been improved after neoadjuvant chemoradiotherapy and even pathological complete response (pCR) has been demonstrated in a significant minority. Patients who achieve pCR to neoadjuvant chemoradiotherapy have an excellent prognosis compared with those without pCR. If the patients with complete response to neoadjuvant chemoradiation can be demonstrated by clinical findings and medical imaging (cCR), a non-operative management (NOM) strategy may be pursued to preserve sphincter function and avoid complications induced by TME, which is a new tendency in the treatment of rectal cancer in recent years...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643145/the-prognostic-value-of-volume-based-parameters-using-18-f-fdg-pet-ct-in-gastric-cancer-according-to-her2-status
#15
Ji Soo Park, Nare Lee, Seung Hoon Beom, Hyo Song Kim, Choong-Kun Lee, Sun Young Rha, Hyun Cheol Chung, Mijin Yun, Arthur Cho, Minkyu Jung
BACKGROUND: We aimed to find the clinical value of metastatic tumor burden evaluated with F18-FDG PET/CT in gastric cancer patients, considering the human epidermal growth factor receptor 2 (HER2) status. METHODS: We retrospectively reviewed 124 patients with locally advanced or metastatic gastric cancer at Yonsei Cancer Center between January 2006 and December 2014 who had undergone baseline FDG PET/CT before first-line chemotherapy. We measured the maximum standardized uptake value from the primary tumor (SUVmax) and whole-body (WB) PET/CT parameters, including WB SUVmax, WB SUVmean, WB metabolic tumor volume (WB MTV), and WB total lesion glycolysis (WB TLG), in all metabolically active metastatic lesions (SUV threshold ≥2...
June 22, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28642674/an-automatic-3d-ct-pet-segmentation-framework-for-bone-marrow-proliferation-assessment
#16
Chuong Nguyen, Joseph Havlicek, Quyen Duong, Sara Vesely, Ronald Gress, Liza Lindenberg, Peter Choyke, Jennifer Holter Chakrabarty, Kirsten Williams
Clinical assessment of bone marrow is limited by an inability to evaluate the marrow space comprehensively and dynamically and there is no current method for automatically assessing hematopoietic activity within the medullary space. Evaluating the hematopoietic space in its entirety could be applicable in blood disorders, malignancies, infections, and medication toxicity. In this paper, we introduce a CT/PET 3D automatic framework for measurement of the hematopoietic compartment proliferation within osseous sites...
September 2016: Proceedings
https://www.readbyqxmd.com/read/28641974/prostate-cancer-local-recurrence-detected-with-both-18-f-fluciclovine-and-psma-targeted-18-f-dcfpyl-pet-ct
#17
Michael A Gorin, Kenneth J Pienta, Martin G Pomper, Steven P Rowe
We present the case of a 79-year-old man with an elevated post-prostatectomy PSA level who was sequentially imaged with PET/CT using (18)F-fluciclovine followed by PSMA-targeted (18)F-DCFPyL. Although both imaging tests successfully identified the same pelvic recurrence, each radiotracer had its relative merits. This case highlights the differences between these two PET radiotracers which are increasingly being used to image men with recurrent prostate cancer.
June 19, 2017: Urology
https://www.readbyqxmd.com/read/28641952/the-effect-of-tissue-segmented-attenuation-maps-on-pet-quantification-with-a-special-focus-on-large-arteries
#18
A Mota-Cobian, J C Alonso-Farto, L Fernández-Friera, J Sánchez-González, B López-Melgar, L J Jiménez-Borreguero, V Fuster, J Ruiz-Cabello, S España
OBJECTIVES: Accuracy on quantitative PET image analysis relies on the correct application of attenuation correction which is one of the major challenges for PET/MRI that remains to be solved. The purpose of this study is to evaluate the effect of MRI-based attenuation maps and the use of flexible coils on the quantitative accuracy of PET images with a special focus on large arteries. MATERIALS AND METHODS: PET/CT data from eight oncologic patients was used. PET data was reconstructed using attenuation maps with different level of detail emulating several approaches available on current PET/MRI scanners...
June 19, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28641766/amyloid-pet-in-pseudotumoral-multiple-sclerosis
#19
Jordi A Matías-Guiu, María Nieves Cabrera-Martín, Ana Cortés-Martínez, Vanesa Pytel, Teresa Moreno-Ramos, Celia Oreja-Guevara, José Luis Carreras, Jorge Matías-Guiu
BACKGROUND: Pseudotumoral multiple sclerosis is a rare form of demyelinating disease of the central nervous system. Positron emission tomography (PET) using amyloid-tracers has also been suggested as a marker of damage in white matter lesions in multiple sclerosis due to the nonspecific uptake of these tracers in white matter. METHOD: We present the case of a 59 year-old woman with a pathological-confirmed pseudotumoral multiple sclerosis, who was studied with the amyloid tracer (18)F-florbetaben...
July 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28641700/-molecular-imaging-in-vivo-detection-of-egfr-mutations-in-non-small-cell-lung-cancer
#20
Danjing Luo, Jin'an Ma, Jinming Zhang, Yanzhong Zhao
An ever increasing number of drugs directed as epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) bring a new revolution for non-small cell lung cancer (NSCLC) therapy, and many large scales of studies show that only people with EGFR-sensitive mutation can benefit from these drugs. The main method of EGFR mutation detection is to analyze the DNA sequence of EGFR, which can be the lung cancer tissue, pleural fluid tumor cells, circulating tumor cells and peripheral blood free DNA obtained by surgery or puncture, the biggest drawback is that the heterogeneity of EGFR mutation cannot be analyzed...
June 20, 2017: Zhongguo Fei Ai za Zhi, Chinese Journal of Lung Cancer
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