Introduction to Quantitative Spect

We demonstrate an advanced approach for quantitative spectral analysis of volatile chemical compounds with nanoelectromechanical infrared spectroscopy.

However, none of the methods used the Hoechst probes for quantitative spectrofluorometric assessment.

Quantitative spectrophotometric determination of cefpirome in pure and pharmaceutical dosage has been developed.

We validate the performance of our novel method using a case study at an open-pit mine in Tharsis, Spain, and demonstrate the importance of accurate illumination corrections for quantitative spectral analyses.

The aim of this study was to compare the diagnostic performance of MRI, SPECT/CT and a combination of both techniques in sacro-iliitis, and to evaluate the correlation between quantitative SPECT/CT indices and quantitative MRI inflammatory lesion scores.

Our strategy is taking advantage of quantitative spectral gap estimates in smaller reference Hilbert space, the factorization method and the enlargement of the functional space.

Background To evaluate the diagnostic performance of quantitative spectral parameters derived from dual-source dual-energy CT at small field of view (FOV) for small lymph node metastasis in thyroid cancer.

Key interferences are impurities of reduced sulfur species associated with pyrite, interferences of nitrite and dissolved Fe(III) with quantitative spectrophotometric determination of Fe(II) and Fe(III) during acidic extractions, interference of oxygen, occurrence of residual iron and sulfur compounds in the reaction medium, and interference of cell-associated and stored sulfur.

This study aimed to compare measured and fixed input radioactivity values for quantitative SPECT/CT bone imaging to examine whether the fixed measurement method of radiopharmaceutical radioactivity could be used as an alternative method.

This interpretation is supported by more quantitative spectroscopy that reveals a clear bimodality in the distribution of the ionization state of the IME ejecta.

This study provides for the first time the Quantitative Spectrometric Variety-Activity Relationships (QSV-ARs) developed for predicting the antioxidant activities (DPPH and ABTS).

Bio-analytical, nano-quantitative spectrofluorimetric estimation of two non-classical β-lactam antibiotics; meropenem (MP) and ertapenem (EP) is presented.

Low 123I MIBG uptake using semi-quantitative SPECT/CT analysis was correlated with early relapse of NB.

(2015), A three-dimensional parallel radiative transfer model for atmospheric heating rates for use in cloud resolving models—The TenStream solver, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 163, 2015, Pages 63-71, ISSN 0022-4073,.

The selected soil samples were examined by semi-quantitative spectral analysis.

Progress in microwave technology and the recent availability of commercial electron paramagnetic resonance (EPR) spectrometers up to an electron Larmor frequency of 263 GHz now open the opportunity for a more quantitative spectral analysis.

Here, we propose a quantitative spectroscopic approach to analyze rice nutritional quality based on Raman spectroscopy, and disclose analytical algorithms for the determination of: (i) amylopectin and amylose concentrations, (ii) aromatic amino acids, (iii) protein content and structure, and (iv) chemical residues.

98 μm (calcite) for quantitative spectral analysis.

At the laboratories, the STANDARD and HemoCue tests were repeated on venous samples and a quantitative spectrophotometric G6PD reference assay was performed (Pointe Scientific, Canton, MI).

The present anisotropy trends resemble the results of Zhang et al (Journal of Quantitative Spectroscopy and Radiative Transfer, 244 (2020) 106844), however, the values are not quite same.

A new, sensitive, and fast magnetic dispersive micro solid phase extraction (Magnetic D-µ-SPE) was developed for preconcentration and quantitative spectrofluorometric determination of ZEA in wheat flour samples.

Journal of quantitative spectroscopy & radiative transfer 110, 889–901, (2009) Horvath, Photophoresis – a forgotten force ??, KONA powder and particle journal, 31, 181–199 (2014) Ketsdever, N.

However, none of the methods used the Hoechst probes for quantitative spectrofluorometric assessment.

However, none of the methods used the Hoechst probes for quantitative spectrofluorometric assessment.

Taking RT-PCR as the diagnostic gold standard, the quantitative spectral LIFA platform could correctly detect all 12 COVID-19 patients.

As reference (current clinical standard) full dosimetry of the OAR based on quantitative imaging (whole body scintigraphy and quantitative SPECT/CT at 2, 24, 48 and 72 h p.

The instrumental methods presented in this work can find applications in quantitative spectroscopy of optically diffusive media, and particularly in near-infrared spectroscopy of biological tissue.

Using this system, quantitative spectroscopy of high attenuation reagents (above −60 dB) was successfully achieved.

Conclusion This international comparison exercise demonstrates that harmonization of quantitative SPECT/CT is feasible when following very specific instructions of a dedicated calibration protocol, as developed within the MRTDosimetry project.

Phantom experiments demonstrated the possibility for quantitative SPECT-CT of bone turnover in a specific prosthesis design.

Conclusions: This study showed that quantitative SPECT with CO2 inhalation could be used to evaluate the voxel-based CVR in healthy subjects, which could be beneficial for elucidating induced hypercapnic states and for longitudinally investigating the healthy aging in brain vessels.

The present paper may be viewed as built from comments concerning a recently published paper in Journal of Quantitative Spectroscopy and Radiative Transfer, and actually constitutes as well a rebuttal of some of the claims it contains.

When studying the absorption spectra, it was found that for the quantitative spectrophotometric analysis of ofloxacin, it is rational to use the wavelength range of 275-320 nm (λ max = 294 nm).

The primary and secondary components have different projected rotational velocities (∼40 and ∼215 km s−1 respectively), and the physical properties derived through quantitative spectroscopic analyses include masses of ∼20.

Accordingly, IR-IDE measurements are well-suited for model-free, quantitative spectroscopic analysis of microscopic water pools.

Present study evaluates whether quantitative SPECT/CT measurement of absolute myocardial 99m Tc-labelled 3,3-diphosphono-1,2-propanodicarboxylic acid (Tc-DPD) uptake can diagnose patients with suspected ATTR.

Quantitative spectral analysis is highly demanded in many applications such as pharmaceutical research, biological sample analysis, and food quality control, in which Raman spectroscopy has been established as a label-free analytical tool.

This work presents a semi-quantitative spectroscopic approach, including FTIR–ATR and Raman spectroscopies, for the biochemical analysis of red blood cells (RBCs) supported by the biochemical, morphological and rheological reference techniques.

Kocifaj, "A review of the theoretical and numerical approaches to modeling skyglow: Iterative approach to RTE, MSOS, and two-stream approximation", Journal of Quantitative Spectroscopy & Radiative Transfer 181, 2 (2016).

Ongoing efforts shall establish clinically usable protocols and SUV thresholds for decision-making based on quantitative SPECT.

Absolute quantitation of myocardial uptake using quantitative SPECT should help overcome these shortcomings.

Hyperspectral microscopy combining both nanoscale imaging and spectral characteristics from plasmonic nanostructures provides a powerful tool for their identification and quantitative spectral analysis of plasmonic nanostructures with unprecedented level of details.

Ten isolates were isolated with varied qualitative and quantitative spectrum of activity against Multidrug resistant Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, and Candida albicans.

A recent multicenter study evaluating SUV SPECT software on phantoms showed that quantitative SPECT/CT is reproducible in Hybrid Viewer software.

Quantitative spectral micro-CT imaging using liposomal-iodine (Lip-I) and liposomal-Gd (Lip-Gd) nanoparticle contrast agents was performed in sarcoma bearing mice for anatomical and functional imaging of tumor vasculature.

In this work, a quantitative spectroscopic study of the bleaching phenomena occurring in plasticized formulations containing poly(vinyl chloride) was performed, proposing a general methodology to comparatively analyze the effect of degrading conditions on the polyene accumulation behaviors (PABs) exhibited by a set of tested formulations.

Recently, driven by the demand for post radionuclide therapy imaging, quantitative SPECT has moved from relative and semiquantitative measures to absolute quantification in terms of activity concentration, and yet further to normalised uptake using the standard uptake value (SUV).

Quantitative spectral simulations considering both local orientational ordering and distribution of local directors in the sample were used for discrimination of models of rotational mobility and orientational alignment.

Absorbed doses for kidneys, pancreas, liver, spleen, gallbladder wall, and tumor lesions were derived based on quantitative SPECT/CT according to RADAR dosimetry scheme; individual organ masses were extracted from CT.

We propose a new approach using quantitative spectral-domain (SD) OCT data to train a DL algorithm to quantify glaucomatous structural damage on optic disc photographs.

Theory and practice of simulation of optical tweezers, Journal of Quantitative Spectroscopy and Radiative Transfer 195, 66, 2017.

A quantitative spectral component analysis method based on Maximum Likelihood Estimation using Expectation Maximization (MLEM) is developed, which could quantitatively decompose out the components of the measured spectrum of low counts and surpass conventional techniques which belong to classification or regression.

On the basis of this assumption, we have designed a dual isolation width acquisition (DIWA) method, in which each precursor is first fragmented with HCD using a standard isolation width for peptide identification and preliminary quantification, followed by a second MS2 HCD scan using a much narrower isolation width for the acquisition of quantitative spectra with reduced interference.

Quantitative SPECT/CT imaging forms the basis for internal dosimetry in molecular radiotherapies.

PurposeTo determine the accuracy of quantitative SPECT, intersystem and interpatient standardized uptake value (SUV) calculation consistency for a manufacturer-independent quantitative SPECT/CT reconstruction algorithm, and the range of SUVs of normal and neoplastic tissue.

Using a quantitative spectroscopic approach, it is shown that the net particle balance at the low-field side target is dominated by a marked decrease in the ionization source between the X-point and the target with increased N and Ne seeding, and only a marginal increase in the volume recombination rate.

Data that is too noisy or inaccurate will produce sub-optimal results when used for pigment mapping, the detection of hidden features, change detection or for quantitative spectral documentation.

A quantitative spectrometer-based photothermal optical coherence tomography (PT-OCT) system is employed to investigate and image the photothermal trapping of gold nano-rods (GNRs) in clear and biological media.

A quantitative spectrophotometric method for PQ was also developed based on device built in-house.

We apply it to: 1) multinational EEG database consisting of 535 subjects to create the quantitative spectrum norms (QSN); 2) large sample intracranial EEG (iEEG) dataset to infer the oscillations from recorded region to unrecorded areas within one subject and over inter-individuals and create the full brain high resolution statistical spectra parametric mapping.

Quantitative spectroscopic multi-species gas sensing relies on the comprehension of the extent of spectral broadening.

We then devised a quantitative spectrum, identifying variants with higher pathogenic variant-associated features.

Davis, The impact of light source spectral power distributionon sky glow, Journal of Quantitative Spectroscopy and Radiative Transfer, (2014).

The method is shown to preserve the frequency positions and amplitudes of spectral transitions, thus being applicable for quantitative spectroscopy.

Here we describe a measurement and data analysis approach to obtain such quantitative spectroscopic LEEM datasets with high lateral resolution.

Here, new scattering correction methods were proposed to estimate the additive and multiplicative parameters considering light scattering effects in each spectrum and hence mitigate the detrimental influence of additive and multiplicative effects on quantitative spectroscopic analysis of complex mixtures.

This work is devoted to examining methods for creating a more realistic lung phantom for quantitative SPECT/CT using 99m Tc-laced expanding polyurethane foam (EPF).

All lesions were categorized as regressive, stable, or progressive based on visual findings and on peak SUV (SUVpeak) of quantitative SPECT/CT (progressive, >30% SUVpeak increase; regressive, <30% SUVpeak decrease; or stable, all others).

The Belgian repository of fundamental atomic data and stellar spectra (BRASS) aims to provide a large systematic and homogeneous quality assessment of the atomic data available for quantitative spectroscopy.

To this end, we study the spectral energy distribution of LS V+22 25 and perform a quantitative spectroscopic analysis that includes the determination of chemical abundances for He, C, N, O, Ne, Mg, Al, Si, S, Ar, and Fe.

Tracer uptake was determined by quantitative SPECT, ex vivo radioactivity counting, and by autoradiography of tumor sections.

The generated iodine then etched the AuNPs, resulting in an obvious colour change of the reaction solution that allowed the selective and quantitative spectrophotometric determination of hydrogen peroxide and glucose.

SPANGY provided a quantitative spectral and spatial analysis of cortical patterns.

This report describes the validation of the quantitative spectral deconvolution 1H NMR method (qsd-NMR) and its application in simultaneous determination of creatinine and metformin concentrations in human urine.

Quantitative SPECT/CT after the first PRRT cycle performed at 3, 24, 48, and 72 h after application of 7.

The kidney volume was determined using CT and the activity was determined from quantitative SPECT using an iterative thresholding method.