Results 71 to 80 of about 5,341 (200)

ANALISIS VARIASI ARUS TABUNG DAN ASIR TERHADAP NOISE DAN CTDIVOL PADA CT SCAN KEPALA PEDIATRIK USIA 0-4 TAHUN

open access: yes, 2022
Pemeriksaan CT-Scan kepala pediatrik di RSUP Dr. Soeradji Tirtonegoro Klaten menggunakan faktor eksposi CT-Scan kepala dewasa dengan dilakukan penurunan nilai mA.
Ary Kurniawati   +4 more
core  

Commissioning a single photon counting CT simulator for radiotherapy planning: Methods, challenges, and initial results

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Photon counting computed tomography (PCCT) offers distinct advantages over standard energy‐integrated detector (EID) CT by offering energy‐resolved measurements, enhanced spatial resolution, and improved soft‐tissue contrast. While PCCT shows great utility in diagnostic imaging, its application as a radiotherapy simulator has not ...
Parminder S. Basran, Devon Richtsmeier
wiley   +1 more source

Analisis Korelasi Usia, Massa Tubuh, mAs, dan Dosis Efektif Terhadap CTDIvol dan DLP pada Pemeriksaan CT-Scan Pasien Dewasa [PDF]

open access: yes
A research study has been conducted on the correlation analysis of age, body mass, mAs, and effective dose with Computed Tomography Dose Index Volume (CTDIvol) and Dose Length Product (DLP) in CT-Scan examinations at the Radiology Department of Dr.
Dewanti, Wafi Muthia   +4 more
core   +1 more source

The effect of vertical centering and scout direction on automatic tube voltage selection in chest CT: a preliminary phantom study on two different CT equipments

open access: yesEuropean Journal of Radiology Open, 2019
Purpose: To determine the effect of patient’s vertical off-centering and scout direction on the function of automatic tube voltage selection (ATVS) and tube current modulation (TCM) in chest computed tomography (CT).
Touko Kaasalainen   +2 more
doaj   +1 more source

Motion correction algorithm improves right coronary artery image quality at heart rates > 75 bpm in non‐ECG‐gated coronary CT angiography

open access: yesJournal of Applied Clinical Medical Physics, Volume 27, Issue 9, September 2026.
Abstract Background Motion artifacts caused by cardiac pulsation remain a major technical challenge in coronary CT angiography (CCTA). Although an advanced cardiac motion correction (CMC) algorithm has been developed and successfully implemented in clinical practice, the effectiveness of this algorithm in improving coronary image quality in clinical ...
Meiqi Wang   +5 more
wiley   +1 more source

Correlation of size specific dose estimates with organ dose in abdominal spectral computed tomography [PDF]

open access: yesJ Appl Clin Med Phys
Abstract Background In abdominal spectral Computed Tomography (CT), organ dose assessment is important for radiation safety but remains challenging due to the complexity of Monte Carlo (MC) simulations. Purpose This study aimed to compare the correlations of three size‐specific dose estimate (SSDE) metrics (including the central slice SSDEcenter, the ...
Qin T   +6 more
europepmc   +2 more sources

Comparison of computed tomography dose levels across two health facilities in Benin City: a retrospective multicenter study

open access: yesThe Egyptian Journal of Radiology and Nuclear Medicine
Background Computed tomography (CT) examinations contribute significantly to medical radiation exposure, necessitating regular dose monitoring and optimization.
Godwin Enosakhare Okungbowa   +1 more
doaj   +1 more source

Redefining Radiation Metrics: Evaluating Actual Doses in Computed Tomography Scans

open access: yesBiomedicines
Background: Computed tomography (CT) contributes significantly to the collective dose from medical sources, raising concerns about potential health risks.
Dominika Sabiniewicz-Ziajka   +4 more
doaj   +1 more source

Accuracy of motion quantification in dynamic CT images of the wrist joint across multiple CT vendors: A phantom study

open access: yesMedical Physics, Volume 53, Issue 9, September 2026.
Background Four‐dimensional computed tomography (4D CT) allows dynamic assessment of wrist kinematics and offers a non‐invasive alternative for evaluating ligament instability. However, insufficient temporal resolution and differences in acquisition or reconstruction protocols may introduce motion‐related artifacts that affect quantitative analysis. As
Hanne Vries   +5 more
wiley   +1 more source

Evaluation of AI-based super-resolution model in CT for dose reduction method: a phantom study

open access: yesThe Egyptian Journal of Radiology and Nuclear Medicine
Background Computed Tomography (CT) is a technology that utilizes X-rays and offers several benefits in the medical field, but it comes with the drawback of radiation exposure.
Doobin Kim   +3 more
doaj   +1 more source

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