ArticleMedical physics2016
Technical Note: spektr 3.0-A computational tool for x-ray spectrum modeling and analysis.
Article in Medical physics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.
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Who cites it
71 citing papers in PubMed.
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- Optimization-based image reconstruction regularized with inter-spectral structural similarity for limited-angle dual-energy cone-beam CT.Physics in medicine and biology · 2025Article
- Correlation analysis of organ doses with dose metrics for patients undergoing organ dose-modulated head CT examinations.Quantitative imaging in medicine and surgery · 2025Article
- Quantifying photon counting detector (PCD) performance using PCD-CT images.Medical physics · 2025Article
- A Generalizable Framework for Kidney Stone Composition Characterization Using Dual-Energy CT.Academic radiology · 2025Article
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- Number of energy windows for photon counting detectors: is more actually more?Journal of medical imaging (Bellingham, Wash.) · 2024Article
- Calculation method for novel upright CT scanner isodose curves.Journal of applied clinical medical physics · 2024Article
- Fine structural human phantom in dentistry and instance tooth segmentation.Scientific reports · 2024Article
- Deformable motion compensation in interventional cone-beam CT with a context-aware learned autofocus metric.Medical physics · 2024Article
11 more citing papers are in PubMed but not listed here.
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5 authors.
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Abstract
purposeA computational toolkit (spektr 3.0) has been developed to calculate x-ray spectra based on the tungsten anode spectral model using interpolating cubic splines (TASMICS) algorithm, updating previous work based on the tungsten anode spectral model using interpolating polynomials (TASMIP) spectral model. The toolkit includes a matlab (The Mathworks, Natick, MA) function library and improved user interface (UI) along with an optimization algorithm to match calculated beam quality with measurements.
methodsThe spektr code generates x-ray spectra (photons/mm(2)/mAs at 100 cm from the source) using TASMICS as default (with TASMIP as an option) in 1 keV energy bins over beam energies 20-150 kV, extensible to 640 kV using the TASMICS spectra. An optimization tool was implemented to compute the added filtration (Al and W) that provides a best match between calculated and measured x-ray tube output (mGy/mAs or mR/mAs) for individual x-ray tubes that may differ from that assumed in TASMICS or TASMIP and to account for factors such as anode angle.
resultsThe median percent difference in photon counts for a TASMICS and TASMIP spectrum was 4.15% for tube potentials in the range 30-140 kV with the largest percentage difference arising in the low and high energy bins due to measurement errors in the empirically based TASMIP model and inaccurate polynomial fitting. The optimization tool reported a close agreement between measured and calculated spectra with a Pearson coefficient of 0.98.
conclusionsThe computational toolkit, spektr, has been updated to version 3.0, validated against measurements and existing models, and made available as open source code. Video tutorials for the spektr function library, UI, and optimization tool are available.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.