Radiation risk for patients undergoing cardiac computed tomography examinations

Alkhorayef, M.; Sulieman, Abdelmoneim; Alzahrani, Khalid; Abuzaid, Mohamed M.; Alomair, Othman I.; Almuwannis, M.; Al‐Ghamdi, Sami G.; Tamam, Nissren; Bradley, D.A.

doi:10.1016/j.apradiso.2020.109520

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…Since the average expected radiation risk from the coronary CT scans was one in 1000, the risk from this highest dose could be estimated as one case of malignancy in 300 scans. This increased cancer risk was due to the non-optimised irradiation procedures and was immediately corrected [27].…”

Section: Radiation Doses In Cardiovascular Ct Scans-a Review Of Reportsmentioning

confidence: 99%

“…Comparing the equipment or test protocols on the basis of the effective dose expressed in millisieverts (mSv) always requires the use of the same conversion k-factor. Different publications use different values, from 0.014-0.017 for chest examinations to 0.024 to 0.030 mSv/mGy*cm for postulated cardiac examinations [24,27].…”

Section: Radiation Doses In Cardiovascular Ct Scans-a Review Of Reportsmentioning

confidence: 99%

“…In most cardiac CT scans, the length of the scanning range is 12 to 13 cm for adults, typically extending from the tracheal bifurcation to the diaphragm. The patient dose per procedure (DLP) was found to increase by approximately 5% for every one cm increase in the scan length [8,27]. Applying a "safety margin" above and below the heart for fear of missing important heart structures is not appropriate [19].…”

Section: Reduction In the Scan Range (Scan Length)mentioning

confidence: 99%

“…In the AP dimension, the tube current is lowered, while in the double-sided dimension, it is increased. This technique is called the automatic exposure control (AEC) and can provide a significant reduction in the radiation dose with minimal deterioration in the image quality [27].…”

Section: The Modulation Of the Current Intensity Depends On The Atten...mentioning

confidence: 99%

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Radiation Doses in Cardiovascular Computed Tomography

Kȩdzierski¹,

Macek

Dziadkowiec-Macek

et al. 2023

Life

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We discussed the contemporary views on the effects of ionising radiation on living organisms and the process of estimating radiation doses in CT examinations and the definitions of the CTDI, CTDIvol, DLP, SSDE, ED. We reviewed the reports from large analyses on the radiation doses in CT examinations of the coronary arteries prior to TAVI procedures, including the CRESCENT, PROTECTION, German Cardiac CT Registry studies. These studies were carried out over the last 10 years and can help confront the daily practice of performing cardiovascular CT examinations in most centres. The reference dose levels for these examinations were also collected. The methods to optimise the radiation dose included tube voltage reduction, ECG-monitored tube current modulation, iterative and deep learning reconstruction techniques, a reduction in the scan range, prospective study protocols, automatic exposure control, heart rate control, rational use of the calcium score, multi-slices and dual-source and wide-field tomography. We also present the studies that indicated the need to raise the organ conversion factor for cardiovascular studies from the 0.014–0.017 mSv/mGy*cm used for chest studies to date to a value of 0.0264–0.03 mSv/mGy*cm.

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Section: Radiation Doses In Cardiovascular Ct Scans-a Review Of Reportsmentioning

confidence: 99%

Section: Radiation Doses In Cardiovascular Ct Scans-a Review Of Reportsmentioning

confidence: 99%