ArticleEuropean radiology2013
How far can the radiation dose be lowered in head CT with iterative reconstruction? Analysis of imaging quality and diagnostic accuracy.
Article in European radiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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18 citing papers in PubMed, 35 citations in OpenAlex.
- Radiation dose and image quality of 70 kVp cerebral CT angiography with optimized sinogram-affirmed iterative reconstruction: comparison with 120 kVp cerebral CT angiography.European radiology · 2015Trial
- Assessment of image quality and impact of deep learning-based software in non-contrast head CT scans.Scientific reports · 2024Article
- Is It Possible to Replace Conventional Radiography (CR) with a Dose Neutral Computed Tomography (CT) of the Cervical Spine in Emergency Radiology-An Experimental Cadaver Study.Diagnostics (Basel, Switzerland) · 2022Article
- Evaluation of Lower-Dose Spiral Head CT for Detection of Intracranial Findings Causing Neurologic Deficits.AJNR. American journal of neuroradiology · 2019Article
- Low-Dose CCT to Exclude Contraindications to Lumbar Puncture : Benefits and Limitations.Clinical neuroradiology · 2019Article
- Periradicular infiltration of the lumbar spine: is iterative reconstruction software necessary to establish ultra-low-dose protocols? A quantitative and qualitative approach.La Radiologia medica · 2018Article
- Using Correlative Properties of Neighboring Pixels to Improve Gray-White Differentiation in Pediatric Head CT Images.AJNR. American journal of neuroradiology · 2018Article
- Could new reconstruction CT techniques challenge MRI for the detection of brain metastases in the context of initial lung cancer staging?European radiology · 2018Article
- Estimation of Observer Performance for Reduced Radiation Dose Levels in CT: Eliminating Reduced Dose Levels That Are Too Low Is the First Step.Academic radiology · 2017Article
- Using Flat-Panel Perfusion Imaging to Measure Cerebral Hemodynamics: A Pilot Feasibility Study in Patients With Carotid Stenosis.Medicine · 2016Article
- Evaluation of whole body Ultralow-Dose CT for the assessment of ventriculoperitoneal shunt complications: an experimental ex-vivo study in a swine model.European radiology · 2015Article
- Potential of combining iterative reconstruction with noise efficient detector design: aggressive dose reduction in head CT.The British journal of radiology · 2015Article
- Effect of radiation dose reduction on image quality in adult head CT with noise-suppressing reconstruction system with a 256 slice MDCT.Journal of applied clinical medical physics · 2015Article
- Image quality of iterative reconstruction in cranial CT imaging: comparison of model-based iterative reconstruction (MBIR) and adaptive statistical iterative reconstruction (ASiR).European radiology · 2015Article
- National Survey of Radiation Dose and Image Quality in Adult CT Head Scans in Taiwan.PloS one · 2015Article
- Model-based iterative reconstruction for detection of subtle hypoattenuation in early cerebral infarction: a phantom study.Japanese journal of radiology · 2015Article
- Radiation dose reduction with dictionary learning based processing for head CT.Australasian physical & engineering sciences in medicine · 2014Article
- Sparse CT reconstruction based on multi-direction anisotropic total variation (MDATV).Biomedical engineering online · 2014Article
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Authors and funding
10 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo evaluate the imaging quality of head CT at lowered radiation dose by combining filtered back projection (FBP) and iterative reconstruction (IR) algorithms.
methodsExperimental group A (n = 66) underwent CT with 43 % tube current reduction, and group B (n = 58) received an equivalent reduced dose by lowering the tube voltage. An age- and sex-matched control group (n = 72) receiving the conventional radiation dose was retrospectively collected. Imaging for the control group was reconstructed by FBP only, while images for groups A and B were reconstructed by FBP and IR. The signal-to-noise ratios (SNRs), contrast-to-noise ratios (CNRs), sharpness, number of infarcts and severity of subcortical arteriosclerotic encephalopathy (SAE) were compared to assess imaging quality and diagnostic accuracy.
resultsThere were no significant differences in SNRs and CNRs between group A and the control group. There were significantly decreased SNRs and increased CNRs in group B. Image sharpness decreased in both groups. Correlations between detected infarcts and severity of SAE across FBP and IR were high (r = 0.73-0.93). Head diameter was the only significant factor inversely correlated with infratentorial imaging quality.
conclusionHead CT with 43 % reduced tube current reconstructed by IR provides diagnostic imaging quality for outpatient management. KEY POINTS: • Cranial CT using iterative reconstruction provides diagnostic images with 43 % mAs reduction. • Blurring of infratentorial images becomes evident using low-radiation head CT. • Head diameter was inversely correlated with imaging quality in the infratentorium. • Lowering tube kilovoltage requires a higher radiation dose to maintain image quality.
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