Patient radiation dose reduction using a commercial iterative reconstruction technique package

Sulieman, Abdelmoneim; Adam, H.; Elnour, Abdelrahman; Tamam, Nissren; Alhaili, A.; Alkhorayef, M.; Al‐Ghamdi, Sami G.; Khandaker, Mayeen Uddin; Bradley, D.A.

doi:10.1016/j.radphyschem.2020.108996

Cited by 25 publications

(4 citation statements)

References 20 publications

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“…However, it appears likely that CT automatic exposure controls based upon BMI over-expose patients to radiation. These automated adjustments made by the CT software may be able to be significantly improved by basing adjustments on minimum radiation dosages ( Cho et al, 2018 ), by adjustments based on patient girth at the location of imaging ( Glanc et al, 2012 ), or by improved reconstruction techniques ( Sulieman et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

Concordance of chest x-ray with chest CT by body mass index

Heston

Jiang

2023

PeerJ

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Introduction Patients with suspected thoracic pathology frequently get imaging with conventional radiography or chest x-rays (CXR) and computed tomography (CT). CXR include one or two planar views, compared to the three-dimensional images generated by chest CT. CXR imaging has the advantage of lower costs and lower radiation exposure at the expense of lower diagnostic accuracy, especially in patients with large body habitus. Objectives To determine whether CXR imaging could achieve acceptable diagnostic accuracy in patients with a low body mass index (BMI). Methods This retrospective study evaluated 50 patients with age of 63 ± 12 years old, 92% male, BMI 31.7 ± 7.9, presenting with acute, nontraumatic cardiopulmonary complaints who underwent CXR followed by CT within 1 day. Diagnostic accuracy was determined by comparing scan interpretation with the final clinical diagnosis of the referring clinician. Results CT results were significantly correlated with CXR results (r = 0.284, p = 0.046). Correcting for BMI did not improve this correlation (r = 0.285, p = 0.047). Correcting for BMI and age also did not improve the correlation (r = 0.283, p = 0.052), nor did correcting for BMI, age, and sex (r = 0.270, p = 0.067). Correcting for height alone slightly improved the correlation (r = 0.290, p = 0.043), as did correcting for weight alone (r = 0.288, p = 0.045). CT accuracy was 92% (SE = 0.039) vs. 60% for CXR (SE = 0.070, p < 0.01). Conclusion Accounting for patient body habitus as determined by either BMI, height, or weight did not improve the correlation between CXR accuracy and chest CT accuracy. CXR is significantly less accurate than CT even in patients with a low BMI.

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Section: Discussionmentioning

confidence: 99%

Concordance of chest x-ray with chest CT by body mass index

Heston

Jiang

2023

PeerJ

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“… Use iterative reconstruction methods that are more noise tolerant than traditional filtered back projection. The dose reduction can be significant, in one study showing 48% dose reduction without loss of image quality [ 42 ]. Adjust scanning pitch as needed .…”

Section: Reducing Risk Of Radiation To the Unborn Childmentioning

confidence: 99%

Effects of ionizing radiation exposure during pregnancy

et al. 2023

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Purpose To review the effects of ionizing radiation to the conceptus and the relationship to the timing of the exposure during pregnancy. To consider strategies that would mitigate potential harms associated with exposure to ionizing radiation during pregnancy. Methods Data reported in the peer-reviewed literature on entrance KERMA received from specific radiological examinations were combined with published results from experiment or Monte Carlo modeling of tissue and organ doses per entrance KERMA to estimate total doses that could be received from specific procedures. Data reported in the peer-reviewed literature on dose mitigation strategies, best practices for shielding, consent, counseling and emerging technologies were reviewed. Results For procedures utilizing ionizing radiation for which the conceptus is not included in the primary radiation beam, typical doses are well below the threshold for causing tissue reactions and the risk of induction of childhood cancer is low. For procedures that include the conceptus in the primary radiation field, longer fluoroscopic interventional procedures or multiphase/multiple exposures potentially could approach or exceed thresholds for tissue reactions and the risk of cancer induction must be weighed against the expected risk/benefit of performing (or not) the imaging examination. Gonadal shielding is no longer considered best practice. Emerging technologies such as whole-body DWI/MRI, dual-energy CT and ultralow dose studies are gaining importance for overall dose reduction strategies. Conclusion The ALARA principle, considering potential benefits and risks should be followed with respect to the use of ionizing radiation. Nevertheless, as Wieseler et al. (2010) state, “no examination should be withheld when an important clinical diagnosis is under consideration.” Best practices require updates on current available technologies and guidelines. Supplementary Information The online version contains supplementary material available at 10.1007/s00261-023-03861-w.

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“…Assessment of low dose protocol using iterative reconstruction (IR) algorithm in abdominal CT examination showed that radiation dose was reduced up to 48% without affecting the image quality [25]. Comparison between deep learning image reconstruction (DLIR) algorithm, the latest introduced complex reconstruction algorithm, and hybrid iterative reconstruction (IR) algorithm to evaluate dose reduction while improving image quality revealed that potential of dose optimization in DLIR algorithm is more than hybrid IR algorithm, and image noise, detectability without changing the noise texture, and spatial resolution in acquired image by DLIR algorithm improved compared to hybrid IR algorithm [26].…”

Section: E Reconstruction Algorithmmentioning

confidence: 99%

Reducing fetal radiation dose in computed tomography for pregnant patients: A literature review

Ghaznavi¹

2021

G Med Sci

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To diagnose diseases during gestation period including renal stones, appendicitis, and pulmonary embolism in pregnant patients, computed tomography (CT) can be a golden standard. Due to CT examination, the fetus is prone to receiving a considerable dose which is the result of direct or scattered (external and internal scattered radiation) beams. The effects of ionization radiation on fetus include mutagenesis and carcinogenesis, therefore, it is essential to reduce fetus dose for pregnant patients who undergo CT examination during gestation period. This article aims to review approaches that are effective in reducing fetal dose in pregnant patients.

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Patient radiation dose reduction using a commercial iterative reconstruction technique package

Cited by 25 publications

References 20 publications

Concordance of chest x-ray with chest CT by body mass index

Concordance of chest x-ray with chest CT by body mass index

Effects of ionizing radiation exposure during pregnancy

Reducing fetal radiation dose in computed tomography for pregnant patients: A literature review

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