New scanning technique using <scp>A</scp>daptive <scp>S</scp>tatistical <scp>I</scp>terative <scp>R</scp>econstruction (<scp>ASIR</scp>) significantly reduced the radiation dose of cardiac <scp>CT</scp>

Tumur, Odgerel; Soon, Kean; Brown, F.; Mykytowycz, Marcus

doi:10.1111/1754-9485.12019

Cited by 21 publications

(30 citation statements)

References 6 publications

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“…The 14 studies recruited a total sample size of 3428 patients . The ratio of male to female was 1664 to 1706 patients, one study did not provide the ratio between gender (Table ) …”

Section: Resultsmentioning

confidence: 99%

“…These include the electrocardiogram (ECG) gating method used, detector collimation size, gantry rotation time, tube voltage and tube current. A total of seven studies used prospective ECG‐gating, two studies used retrospective, and four studies used both types . One study did not provide the type of ECG‐gating used .…”

Section: Resultsmentioning

confidence: 99%

“…The range of gantry rotation time was 270–350 ms ranging across 11 studies since three did not provide these values . The minimum tube voltage for all studies was 80 kVp and the maximum was 135 kVp with seven studies using between 100 and 120 kVp . The mean ± SD of tube current for FBP and IR across five studies was 481.32 ± 331.26 and 327.56 ± 189.06 respectively indicating approximately 68% reduction in tube current used .…”

Section: Resultsmentioning

confidence: 99%

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Radiation dose and diagnostic image quality associated with iterative reconstruction in coronary CT angiography: A systematic review

et al. 2016

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The aim of this systematic review is to evaluate the radiation dose reduction achieved using iterative reconstruction (IR) compared to filtered back projection (FBP) in coronary CT angiography (CCTA) and assess the impact on diagnostic image quality. A systematic search of seven electronic databases was performed to identify all studies using a developed keywords strategy. A total of 14 studies met the criteria and were included in a review analysis. The results showed that there was a significant reduction in radiation dose when using IR compared to FBP (P < 0.05). The mean and standard deviation (SD) difference of CTDIvol and dose-length-product (DLP) were 14.70 ± 6.87 mGy and 186 ± 120 mGy.cm respectively. The mean ± SD difference of effective dose (ED ) was 2.9 ± 1.7 mSv with the range from 1.0 to 5.0 mSv. The assessment of diagnostic image quality showed no significant difference (P > 0.05). The mean ± SD difference of image noise, signal-noise ratio (SNR) and contrast-noise ratio (CNR) were 1.05 ± 1.29 HU, 0.88 ± 0.56 and 0.63 ± 1.83 respectively. The mean ± SD percentages of overall image quality scores were 71.79 ± 12.29% (FBP) and 67.31 ± 22.96% (IR). The mean ± SD percentages of coronary segment analysis were 95.43 ± 2.57% (FBP) and 97.19 ± 2.62% (IR). In conclusion, this review analysis shows that CCTA with the use of IR leads to a significant reduction in radiation dose as compared to the use of FBP. Diagnostic image quality of IR at reduced dose (30-41%) is comparable to FBP at standard dose in the diagnosis of CAD.

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“…The 14 studies recruited a total sample size of 3428 patients . The ratio of male to female was 1664 to 1706 patients, one study did not provide the ratio between gender (Table ) …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Radiation dose and diagnostic image quality associated with iterative reconstruction in coronary CT angiography: A systematic review

et al. 2016

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“…7 Retrospective analyses showed comparable results, with one study demonstrating a 24% dose reduction among patients undergoing coronary CTA with ASiR reconstruction compared to FBP despite no differences in signal intensity, signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), or diagnostic quality. 8 Gosling et al 9 demonstrated that while coronary CTA with FBP reconstruction resulted in a similar dose to invasive coronary angiography (ICA) (5.4 mSv vs 6.3 mSv), there was a 54% dose reduction using ASiR reconstruction (2.5 mSv) (Fig. 1).…”

Section: Adaptive Statistical Iterative Reconstructionmentioning

confidence: 99%

Iterative reconstruction in cardiac CT

Naoum

Blanke

Leipsic

2015

Journal of Cardiovascular Computed Tomography

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“…1,2 IR methods have been successfully applied in cardiovascular, 3,4 thoracic, [5][6][7][8] abdominal, 9,10 and head CT applications. [11][12][13][14] This study used a commercially available advanced IR technique, sinogram-affirmed iterative reconstruction.…”

mentioning

confidence: 99%

Repeated Head CT in the Neurosurgical Intensive Care Unit: Feasibility of Sinogram-Affirmed Iterative Reconstruction–Based Ultra-Low-Dose CT for Surveillance

Corcuera‐Solano

Doshi

Noor

et al. 2014

AJNR Am J Neuroradiol

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BACKGROUND AND PURPOSE:Patients in the neurosurgical intensive care unit undergo multiple head CT scans, resulting in high cumulative radiation exposures. Our aim was to assess the acceptability of a dedicated, special-purpose sinogram-affirmed iterative reconstruction-based ultra-low-dose CT protocol for neurosurgical intensive care unit surveillance head CT examinations, comparing image quality with studies performed with our standard-of-care sinogram-affirmed iterative reconstruction low-dose CT and legacy filtered back-projection standard-dose CT protocols.

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New scanning technique using Adaptive Statistical Iterative Reconstruction (ASIR) significantly reduced the radiation dose of cardiac CT

Abstract: Application of ASIR reduces the radiation dose of CCTA without affecting the image quality.

Cited by 21 publications

References 6 publications

Radiation dose and diagnostic image quality associated with iterative reconstruction in coronary CT angiography: A systematic review

Radiation dose and diagnostic image quality associated with iterative reconstruction in coronary CT angiography: A systematic review

Iterative reconstruction in cardiac CT

Repeated Head CT in the Neurosurgical Intensive Care Unit: Feasibility of Sinogram-Affirmed Iterative Reconstruction–Based Ultra-Low-Dose CT for Surveillance

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