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2021 ◽  
pp. jnumed.121.263082
Author(s):  
Romain-David Seban ◽  
Capucine Richard ◽  
Camila Nascimento-Leite ◽  
Jerome Ghidaglia ◽  
Claire Provost ◽  
...  

2021 ◽  
pp. jnumed.121.262831
Author(s):  
Chetsadaporn Promteangtrong ◽  
Dheeratama Siripongsatian ◽  
Attapon Jantarato ◽  
Anchisa Kunawudhi ◽  
Peerapon Kiatkittikul ◽  
...  

2021 ◽  
pp. jnumed.121.262869
Author(s):  
Sally F Barrington ◽  
Farheen Mir ◽  
Tarec Christoffer El-Galaly ◽  
Andrea Knapp ◽  
Tina G Nielsen ◽  
...  

2021 ◽  
Author(s):  
Matthieu DIETZ ◽  
Christel H Kamani ◽  
Gilles Allenbach ◽  
Vladimir Rubimbura ◽  
Stephane Fournier ◽  
...  

Abstract Purpose The aim of this study was to assess the most reliable quantitative variable on Rubidium-82 (82Rb) cardiac PET/CT for predicting major adverse cardiovascular events (MACE), on the latest PET camera using silicon photomultipliers digital readout (SiPM) technology. Methods We prospectively enrolled 274 consecutive participants with suspected myocardial ischemia. Participants underwent 82Rb cardiac SiPM PET/CT and were followed-up for MACE over 652 days (interquartile range: 559 to 751 days). For each participant, global and regional myocardial flow reserve (MFR), stress myocardial blood flow (stress MBF) and their combination as myocardial flow capacity radius (MFC radius) were measured. Results On receiver operator curve analysis, MACE prediction was similar for global and regional MFR, stress MBF, and MFC radius (area under the curve; (i) Global: 0.70 vs. 0.71 and 0.73, and (ii) Regional: 0.71 vs. 0.71 and 0.73, respectively, p > 0.1 for all pairwise comparisons). On multivariable analysis, (i) Global: MFR < 1.98, stress MBF < 1.94 mL/g/min, and MFC radius < 3.12, as well as (ii) Regional: MFR < 1.75, stress MBF < 1.75 mL/g/min, and MFC radius < 2.7, emerged all as similar independent predictors of MACE (p < 0.001 for all). Conclusions Using the latest SiPM PET technology with 82Rb, global and regional MFR, stress MBF, and MFC radius are similar powerful predictors of cardiovascular event.


2021 ◽  
Vol 11 (12) ◽  
Author(s):  
Hee Jeong Cho ◽  
Sung-Hoon Jung ◽  
Jae-Cheol Jo ◽  
Yoo Jin Lee ◽  
Sang Eun Yoon ◽  
...  

AbstractIn multiple myeloma (MM), a high number of focal lesions (FL) detected using positron emission tomography/computed tomography (PET/CT) was found to be associated with adverse prognosis. To design a new risk stratification system that combines the Revised International Staging System (R-ISS) with FL, we analyzed the data of 380 patients with newly diagnosed MM (NDMM) who underwent 18F-fluorodeoxyglucose (18F-FDG) PET/CT upon diagnosis. The K-adaptive partitioning algorithm was adopted to define subgroups with homogeneous survival. The combined R-ISS with PET/CT classified NDMM patients into four groups: R-ISS/PET stage I (n = 31; R-ISS I with FL ≤ 3), stage II (n = 156; R-ISS I with FL > 3 and R-ISS II with FL ≤ 3), stage III (n = 162; R-ISS II with FL > 3 and R-ISS III with FL ≤ 3), and stage IV (n = 31; R-ISS III with FL > 3). The 2-year overall survival rates for stages I, II, III, and IV were 96.7%, 89.8%, 74.7%, and 50.3%. The 2-year progression-free survival rates were 84.1%, 64.7%, 40.8%, and 17.1%, respectively. The new R-ISS/PET was successfully validated in an external cohort. This new system had a remarkable prognostic power for estimating the survival outcomes of patients with NDMM. This system helps discriminate patients with a good prognosis from those with a poor prognosis more precisely.


2021 ◽  
Author(s):  
Hans Veerman ◽  
Maarten Donswijk ◽  
Elise Bekers ◽  
Judith olde Heuvel ◽  
Yves J.L. Bodar ◽  
...  

Author(s):  
F. Witte ◽  
H.-J. Lakomek ◽  
J. Holzinger ◽  
W.-D. Reinbold

Zusammenfassung Hintergrund Die Diagnose von Patienten mit Polymyalgia rheumatica (PMR) beruht bislang auf der klinischen Symptomatik und laborchemischen Entzündungsparametern. Aktuell wird der Nutzen verschiedener bildgebender Verfahren evaluiert, hierunter die Sonographie, MRT und PET. Ziel der Arbeit/Fragestellung Ziel war die Evaluation der diagnostischen Wertigkeit der 18-Fluordesoxyglukose-Positronenemissionstomographie/Computertomographie (18F-FDG-PET/CT) bei PMR, um die Sensitivität und Spezifität in der diagnostischen Aufarbeitung zu verbessern, sowie die rheumatoide Arthritis (RA) differentialdiagnostisch verbessert abzugrenzen. Material und Methoden Es wurden 18F-FDG-PET/CT-Untersuchungen von 284 rheumatologischen Patienten – hierunter 97 Patienten mit PMR – aus einem 44-monatigen Zeitraum retrospektiv evaluiert. Weiter wurden 13 entzündlich veränderte Regionen via dreidimensionaler Region-of-interest(ROI)-Messung mit Bestimmung des maximalen Standardized-Uptake-Value (SUVmax) analysiert, gefolgt von statistischen Analysen. Ergebnisse und Diskussion Patienten mit PMR zeigten im Vergleich mit einer rheumatologisch behandelten Kontrollgruppe signifikant erhöhte Anreicherungen in allen gemessenen Regionen (p < 0,001). Die Methode mit der stärksten diagnostischen Aussagekraft stellte die Kombination aus vier SUVmax-Messwerten – beider anterolateraler Hüftkapseln und beider Tubera ischiadica – dar, mit einer Sensitivität von 91,3 % und einer Spezifität von 97,6 % bei einem Cut-off von 11,0 SUV für die Erstdiagnose von PMR-Patienten, die noch keine immunsuppressive Therapie erhalten hatten. Patienten mit RA konnten bei Erstdiagnose an ebenjenen anatomischen Regionen signifikant von Patienten mit PMR unterschieden werden (p < 0,001).


Author(s):  
Manar Mohamed Naguib ◽  
Samer Malak Botros ◽  
Amir Louis Louka ◽  
Rasha S. Hussein

Abstract Background Accurate radiologic assessment of treatment response in lymphoma patients is important to evaluate the effectiveness of treatment and consequently predict the relapse; the value of PET/CT for post-treatment prognosis prediction has been recently investigated. The aim of this study is to highlight the prognostic value of PET-CT metabolic volumetric parameters in the evaluation of lymphoma patients. Results Among the included 40 patients, post-treatment SUV, MTV, and TLG were significantly lower in a responsive group than the non-responsive group. % changes of all quantitative PET/CT parameters were significantly higher in the responsive group than the non-responsive group. Conclusions This study suggests that pre-treatment PET/CT quantitative measures (except baseline SUVmax) are not conclusive in the prediction of patient response to treatment; however, the ΔSUVmax, ΔMTV, and ΔTLG% from the baseline to the end of therapy could be used in predicting patient response to treatment, determining patient prognosis, and suggesting the relapse.


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