BACKGROUND To explore the role of apparent diffusion coefficient (ADC) histogram shape related parameters in early assessment of treatment response during the concurrent chemo-radiotherapy (CCRT) course of advanced cervical cancers. METHODS This prospective study was approved by the local ethics committee and informed consent was obtained from all patients. Thirty-two patients with advanced c...

BACKGROUND There is often a need in flow cytometry to display and analyze histograms at resolutions lower than those native to the data. It is common, for example, to analyze DNA histograms at 256-channel resolution, even though the data were acquired at 1,024 channels or more. The most common method for reducing resolution, referred to as the consecutive summation (CS) method, can introduce di...

Purpose: To evaluate both a histogram based analysis of MR-derived cerebral blood volume maps and metabolite ratios from proton MR spectroscopy in order to exploit the ability of each method to characterize gliomas and to evaluate their combined diagnostic potential. Background: The value of normalized cerebral blood volume ratio (nCBV) analysis to differentiate high-grade (WHO grade III-IV) fr...

Many database applications have the emerging need to support fuzzy queries that ask for strings that are similar to a given string, such as “name similar to smith” and “telephone number similar to 412-0964.” Query optimization needs the selectivity of such a fuzzy predicate, i.e., the fraction of records in the database that satisfy the condition. In this paper, we study the problem of estimati...

This paper deals with some error effects caused by additive noise at analogue-to-digital converters (ADCs) testing based on the histogram method and the exponential shape of input testing stimulus. The histogram method with the exponential stimulus has been an alternative test method for ADC that was developed by the authors of this paper. Here, the theoretical analysis of some errors in estima...

This paper presents a novel approach to speech data normalization by introducing interpolation for histogram equalization. We study different ways of histogram interpolation that inhence this normalization technique. We found that using a special weighting factor to combine current and past test sentence statistics improved speech recognition performance. For the testing that used weighted hist...

Several methods have been proposed for comparing fluorescence intensity curves obtained from flow cytometry analysis. The one comparison method that is most often used is the Kolmogorov-Smirnov (K-S) test, which is known to find statistically significant differences between curves even when clinical or scientific differences are doubtful. In the field of flow cytometry, the combination of the g...

We present quantum bum ps obtained from flash experim ents at the Limulus ventral nerve photoreceptor under voltage clam p conditions. The results are shown and discussed in form o f histogram s for the latency, am plitude and net charge transfer (current time integral) o f the bum p current responses. We argue tha t the experim ental latency histogram s cannot be de­ scribed satisfactorily by ...

BACKGROUND AND PURPOSE To apply a texture analysis of apparent diffusion coefficient (ADC) maps to evaluate glioma heterogeneity, which was correlated with tumor grade. MATERIALS AND METHODS Forty patients with glioma (WHO grade II (n = 8), grade III (n = 10) and grade IV (n = 22)) underwent diffusion-weighted imaging (DWI), and the corresponding ADC maps were obtained. Regions of interest co...

OBJECTIVE To determine whether histogram values of the normalized apparent diffusion coefficient (nADC) and normalized cerebral blood volume (nCBV) maps obtained in contrast-enhancing lesions detected on immediate post-operative MR imaging can be used to predict the patient response to concurrent chemoradiotherapy (CCRT) with temozolomide (TMZ). MATERIALS AND METHODS Twenty-four patients with...