Relationships of Radiation Dose Indices with Body Size Indices in Adult Body Computed Tomography
Tomography, 2023 We investigated the relationships between radiation dose indices and body size indices in adult body computed tomography (CT). A total of 3200 CT scans of the thoracic, abdominal, abdominopelvic, or thoraco-abdominopelvic regions performed using one of ...
Yusuke Inoue +4 more
doaj +2 more sources
Impact of X-ray beam quality on organ-absorbed dose in chest CT: Evaluation using spectral analysis and beam-shaping filters. [PDF]
J Appl Clin Med PhysAbstract Background In computed tomography (CT), radiation dose is commonly evaluated using system‐displayed metrics such as CTDIvol; however, variations in X‐ray beam quality may influence organ absorbed dose even under identical CTDIvol conditions.
Ito Y +4 more
europepmc +2 more sources
Revista de Investigación de FísicaDose indicators for head computed tomography (CT) studies, such as the volumetric CT Dose Index (CTDIvol) were verified and analyzed for pediatric patients. Simulations of studies using brain exposure techniques were performed on the CT scanner at the National Institute of Child Health (INSN).
Víctor Infante +3 more
openaire +3 more sources
Evaluation of Size-Specific Dose Estimates for Optimizing Pediatric Chest CT Protocol [PDF]
Iranian Journal of Medical Physics, 2022 Introduction: The importance of estimating patient-sized adjusted radiation dose for pediatric computed tomography (CT) has long been accepted. High doses of ionizing radiation to children are often common in chest CT examinations, as the volume CT dose ...
Fariba Zarei +6 more
doaj +1 more source
Size specific dose estimate (SSDE) for estimating patient dose from CT used in myocardial perfusion SPECT/CT [PDF]
Asia Oceania Journal of Nuclear Medicine and Biology, 2020 Objective(s): Size specific dose estimate (SSDE) is a new parameter that includes patient size factor in its calculation. Recent studies have produced mixed results on the utility of SSDE, especially when automatic exposure control (AEC) was used.
Vishnukumar Rajaraman +2 more
doaj +1 more source
The Effects Of High Dose and Low Dose Protocols In Thorax’s CT Scan Image Quality
Indonesian Journal of Applied Physics, 2021 The aim of this research was to evaluate the effects of two different dose protocols’ usage on image quality. This research was performed on three different CT Scanners using high dose and low dose protocols of thorax scan.
Ni Larasati Kartika Sari +3 more
doaj +1 more source
Size-specific weighted detectability index for computed tomography image characterization. [PDF]
Med PhysAbstract Background Technological developments in computed tomography (CT) have increased the diversity of acquisition and reconstruction strategies available for clinical imaging. Task‐based image quality metrics that account for patient‐size variability are needed to characterize reconstructed image performance and support protocol optimization ...
Fitton I +3 more
europepmc +2 more sources
Atom Indonesia, 2022 The dose received by a patient on CT examination is expressed in size-specific dose estimates (SSDE) which is a function of the patient diameter, x-ray attenuation, and scanner output (volume computed tomography dose index, CTDIvol). Patient diameter and
A. L. Wati +4 more
doaj +1 more source
AI-Driven Prediction of Chest CT Radiation Doses: Establishing BMI-Based Diagnostic Reference Levels and Patient-Factor Correlations for Machine-Learning Models. [PDF]
TomographyBackground and aim: Chest CT is a major contributor to population radiation exposure. Conventional, pooled diagnostic reference levels (DRLs) do not account for inter-individual variability in body habitus and are typically used retrospectively.
Hamd ZY +7 more
europepmc +2 more sources
Institutional CT dose reduction: A retrospective evaluation of dose indices from 2015–2024 [PDF]
J Appl Clin Med PhysAbstract Background Growing attention to radiation risks and dose reduction in CT imaging creates opportunities to present and discuss institutional dose trends and contributing factors. Purpose To provide an evaluation of 10‐year trends in CT dose indices (CTDIvol and DLP) from a multi‐site and multi‐scanner institution, with the hypothesis that doses
Weaver J +4 more
europepmc +2 more sources