This paper analyses the short utterance probabilistic linear discriminant analysis (PLDA) speaker verification with utterance partitioning and short utterance variance (SUV) modelling approaches. Experimental studies have found that instead of using single long-utterance as enrolment data, if long enrolledutterance is partitioned into multiple short utterances and average of short utterance i-v...

This paper analyses the short utterance probabilistic linear discriminant analysis (PLDA) speaker verification with utterance partitioning and short utterance variance (SUV) modelling approaches. Experimental studies have found that instead of using single long-utterance as enrolment data, if long enrolledutterance is partitioned into multiple short utterances and average of short utterance i-v...

OBJECTIVE A complication after spinal fusion surgery is pseudarthrosis, but its radiological diagnosis is of limited value. (18)F-fluoride PET with its ability to assess bone metabolism activity could be of value. The goal of this study was to assess the clinical feasibility of calculating the static standardized uptake value (SUV) from a short dynamic scan without the use of blood sampling, th...

Figure 1 (A) Positron emission tomography CT (PET-CT) scan shows a hypermetabolic lesion located superficial to the lower sternum (arrow), measuring about 3.80×4.77×4.84 cm. SUV max=12.9. (B) PET-CT scan shows a hypermetabolic lesion located in the right first intercostal space with erosion of the first rib (arrow), measuring about 3.25×5.62×4.25 cm. SUV max=10.8. (C) PET-CT scan shows a hyperm...

BACKGROUND Fluorine-18 ((18)F) fluorodeoxyglucose (FDG) positron emission tomography (PET) is limited in its evaluation of brain tumors due to the high basal activity of the cerebral cortex and white matter. Carbon-11 methionine ((11)C MET) has little uptake under normal conditions. We prospectively investigated the uptake of (18)F FDG and (11)C MET PET in patients with craniopharyngioma prior ...

OBJECTIVE Tissue accumulation of (18)F-FDG is quantified as standardised uptake value (SUV), which may be expressed as the voxel maximum (SUVmax) or mean (SUVmean). SUVmax/SUVmean may be a marker of hepatic steatosis, while the coefficient of variation (CV) of SUV may be a marker of hepatic fat distribution heterogeneity (HFDH). Alternatively, they may reflect low signal-to-noise ratio ('noise'...

BACKGROUND We have demonstrated recently that the tumor-to-blood standard uptake ratio (SUR) is superior to tumor standardized uptake value (SUV) as a surrogate of the metabolic uptake rate K m of fluorodeoxyglucose (FDG), overcoming several of the known shortcomings of the SUV approach: excellent linear correlation of SUR and K m from Patlak analysis was found using dynamic imaging of liver me...

BACKGROUND We investigated the effects of uncoupling protein 3 (UCP3) genetic deletion on 18F-fluorodeoxyglucose (FDG) cardiac uptake by positron emission tomography (PET)/computed tomography (CT) dedicated animal system after permanent coronary artery ligation. METHODS Cardiac 18F-FDG PET/CT was performed in UCP3 knockout (UCP3-/-) and wild-type (WT) mice one week after induction of myocardi...

UNLABELLED High tumor uptake of (18)F-FDG is associated with an unfavorable outcome in cancer patients. We evaluated pretreatment (18)F-FDG uptake as guidance for the primary treatment modality in patients with squamous cell carcinoma (SCC) of the oropharynx. METHODS Fifty-two consecutive patients with newly diagnosed resectable SCC of the oropharynx underwent (18)F-FDG PET before treatment. ...

OBJECTIVE To evaluate the prognostic value of volume-based metabolic parameters measured with (18)F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography (PET) in patients with clinically node-negative (cN0) oral tongue squamous cell carcinoma (OTSCC) as compared with other prognostic factors. MATERIALS AND METHODS In this study, we included a total of 57 patients who had been diagnosed...