Evaluation of automatic tube current modulation of CT scanners using a dedicated and the CTDI dosimetry phantoms
Sign Up to like & getrecommendations! Published in 2022 at "Journal of Applied Clinical Medical Physics"
DOI: 10.1002/acm2.13620
Abstract: Abstract Purpose To investigate the operation principles of the automatic tube current modulation (ATCM) of a CT scanner, using a dedicated phantom and the CT dosimetry index (CTDI) phantom. Material and methods The Mercury 4.0… read more here.
Keywords: modulation; current modulation; tube current; dosimetry ... See more keywords
Head CT dose reduction with organ-based tube current modulation.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15467
Abstract: BACKGROUND A helical head CT examination uses a pitch factor (PF) of < 1.0, resulting in a part of the slice being directly irradiated twice. This raises the possibility of double irradiation, which may increase… read more here.
Keywords: double irradiation; tube current; dose reduction; based tube ... See more keywords
Patient-specific radiation risk-based tube current modulation for diagnostic CT.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15673
Abstract: PURPOSE Modern CT scanners use automatic exposure control (AEC) techniques, such as tube current modulation (TCM), to reduce dose delivered to patients while maintaining image quality. In contrast to conventional approaches that minimize the tube… read more here.
Keywords: tube current; radiation risk; dose; current modulation ... See more keywords
Extent of tube-current reduction using sinogram affirmed iterative reconstruction in pediatric computed tomography: phantom study
Sign Up to like & getrecommendations! Published in 2018 at "Pediatric Radiology"
DOI: 10.1007/s00247-018-4260-3
Abstract: BackgroundIterative image reconstruction techniques can produce diagnostic-quality computed tomography (CT) images with lower radiation dose.ObjectiveTo quantify the reduction in x-ray tube-current setting and optimize pediatric CT scans using different strengths of an iterative reconstruction technique.Materials… read more here.
Keywords: reconstruction; tube current; iterative reconstruction; current reduction ... See more keywords
Low-dose MDCT: evaluation of the impact of systematic tube current reduction and sparse sampling on the detection of degenerative spine diseases
Sign Up to like & getrecommendations! Published in 2020 at "European Radiology"
DOI: 10.1007/s00330-020-07278-7
Abstract: Objectives To investigate potential radiation dose reduction for multi-detector computed tomography (MDCT) exams of the spine by using sparse sampling and virtually lowered tube currents combined with statistical iterative reconstruction (SIR). Methods MDCT data of… read more here.
Keywords: sparse sampling; degenerative changes; tube; dose ... See more keywords
Effect of scan projection radiography coverage on tube current modulation in pediatric and adult chest CT.
Sign Up to like & getrecommendations! Published in 2020 at "Zeitschrift fur medizinische Physik"
DOI: 10.1016/j.zemedi.2020.05.003
Abstract: PURPOSE To investigate the effect of scan projection radiography (SPR) coverage on tube current modulation in pediatric and adult thoracic CT examinations. METHODS Sixty pediatric and 60 adult chest CT examinations were retrospectively studied to… read more here.
Keywords: current modulation; tube current; pediatric adult;
Effect of tube current on computed tomography radiomic features
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-20713-6
Abstract: Variability in the x-ray tube current used in computed tomography may affect quantitative features extracted from the images. To investigate these effects, we scanned the Credence Cartridge Radiomics phantom 12 times, varying the tube current… read more here.
Keywords: computed tomography; radiomic features; tube; features extracted ... See more keywords
Computed Tomography Images of the Scapula Taken With Reduced Dose Can Yield Segmented Models of Sufficient Accuracy: A Pilot Study
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Computer Assisted Tomography"
DOI: 10.1097/rct.0000000000000706
Abstract: Objective The aim of the study was to investigate the influence of tube current reduction on the segmentation accuracy of the scapula. Methods A human cadaver was computed tomography scanned multiple times while reducing tube… read more here.
Keywords: tomography images; computed tomography; study; accuracy ... See more keywords
Automatic Tube Current Modulation and Tube Voltage Selection in Pediatric Computed Tomography
Sign Up to like & getrecommendations! Published in 2019 at "Investigative Radiology"
DOI: 10.1097/rli.0000000000000537
Abstract: Objectives The aim of this study was to investigate the effects of a modern automatic tube current modulation (ATCM) and automatic tube voltage selection (ATVS) system on radiation dose and image quality in pediatric head,… read more here.
Keywords: atvs; abdomen pelvis; tube; thorax abdomen ... See more keywords
Automated, patient-specific estimation of regional imparted energy and dose from tube current modulated computed tomography exams across 13 protocols
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Medical Imaging"
DOI: 10.1117/1.jmi.4.1.013503
Abstract: Abstract. Currently, computed tomography (CT) dosimetry relies on surrogates for dose, such as CT dose index and size-specific dose estimates, rather than dose per se. Organ dose is considered as the gold standard for radiation… read more here.
Keywords: computed tomography; imparted energy; energy; regional imparted ... See more keywords
Breast dose reduction with organ-based, wide-angle tube current modulated CT
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Medical Imaging"
DOI: 10.1117/1.jmi.4.3.031208
Abstract: Abstract. This study aimed to estimate the organ dose reduction potential for organ-dose-based tube current modulated (ODM) thoracic computed tomography (CT) with a wide dose reduction arc. Twenty-one computational anthropomorphic phantoms (XCAT) were used to… read more here.
Keywords: organ dose; current modulated; tube current; breast dose ... See more keywords