Neonatal cardiac multidetector row CT: why and how we do it

Tsai, I-Chen; Chen, Min-Chi; Jan, Sheng-Ling; Wang, Chung-Chi; Fu, Yun‐Ching; Lin, Pao-Chun; Lee, Tain

doi:10.1007/s00247-008-0761-9

Cited by 80 publications

(50 citation statements)

References 26 publications

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“…However, the benefits of this non-invasive diagnostic technique outweigh the potential radiation risks especially when comparing this to a diagnostic cardiac catheter angiography study that carries an additional procedural risk [7]. Dose saving measures are enhanced by employing patient specific weight-based protocols with adaptation of kVp and mAs: the main determinate of radiation dose received [1,2,5]. From the articles reviewed, the standard CT protocol of 80 kV was used throughout with the mAs adjusted to individual's weight.…”

Section: Radiation Dosementioning

confidence: 99%

“…When combined with ECG-controlled tube current modulation a dose reduction between 9% and 26% can be achieved [14]. However, Tsai et al [2] believe dose modulation is ineffective in neonates due to the short CT data acquisition and heterogeneous composition of the bones and soft tissues of the neonatal chest. They also believe that the dose reduction generated by ECG-pulsing is inversely proportional to heart rate, and at 120 bpm the dose saving effect is almost zero.…”

Section: Radiation Dosementioning

confidence: 99%

“…Radiation burden incurred in MDCT ECG-gated cardiac imaging ranges from 2.17 to 3.41 mSv, limiting its use to complex CHD and as a problem solving technique [2]. A retrospective ECG-gated study carried out on a 40-slice MDCT recorded a DLP of 91 mGy.cm (Tsai et al [6]), this is much higher than centres using a DSCT with reductions of 49/69/76% recorded by Jin et al [20], ourselves and Ben Saad et al [5] respectively.…”

Section: Comparison Of Radiation Dosementioning

confidence: 99%

“…Multi-detector CT (MDCT) led the way enabling imaging of cardiovascular structures and coronary artery anomalies in children without the use of ECGsynchronisation [1][2][3][4]. However, greater accuracy in coronary artery anatomical delineation was seen using retrospective ECG-gating, and was subsequently applied to CT imaging of neonates with CHD [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Paediatric cardiac computed tomography: a review of imaging techniques and radiation dose consideration

Young

Owens²

2010

Eur Radiol

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The significant challenges involved in imaging the heart in small children (<15 kg) have been addressed by, and partially resolved with improvement in temporal and spatial resolution secondary to the advent of new multidetector CT technology. This has enabled both retrospective and prospective ECG-gated imaging in children even at high heart rates (over 100 bpm) without the need for beta blockers. Recent studies have highlighted that the radiation burden associated with cardiac CT can be reduced using prospective ECG-gating. Our experience shows that the resultant dose reduction can be optimised to a level equivalent to that of a non-gated study. This article reviews the different aspects of ECG-gating and the preferred technique for cardiac imaging in the young child (<15 kg). We summarize our evidenced based recommendations for readers, referencing recent articles and using our in house data, protocols and dose measurements discussing the various methods available for dose calculations and their inherent bias.

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Section: Radiation Dosementioning

confidence: 99%

Section: Radiation Dosementioning

confidence: 99%

Section: Comparison Of Radiation Dosementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Paediatric cardiac computed tomography: a review of imaging techniques and radiation dose consideration

Young

Owens²

2010

Eur Radiol

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“…Computed tomography (CT) is a valuable imaging technique that helps to diagnose and manage some pediatric medical conditions 1, 2, 3. However, CT can result in a high amount of cumulative radiation 4.…”

Section: Introductionmentioning

confidence: 99%

Relationship between the radiation doses at nonenhanced CT studies using different tube voltages and automatic tube current modulation during anthropomorphic phantoms of young children

Masuda

Funama

Kiguchi

et al. 2017

J Applied Clin Med Phys

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To compare the radiation dose and image noise of nonenhanced CT scans performed at 80, 100, and 120 kVp with tube current modulation (TCM) we used anthropomorphic phantoms of newborn, 1‐year‐old, and 5‐year‐old children. The noise index was set at 12. The image noise in the center of the phantoms at the level of the chest and abdomen was measured within a circumscribed region of interest. We measured the doses in individual tissues or organs with radio‐photoluminescence glass dosimeters for each phantom. Various tissues or organs were assigned and the radiation dose was calculated based on the international commission on radiological protection definition. With TCM the respective radiation dose at tube voltages of 80, 100, and 120 was 29.71, 31.60, and 33.79 mGy for the newborn, 32.00, 36.79, and 39.48 mGy for the 1‐year‐old, and 32.78, 38.11, and 40.85 mGy for the 5‐year‐old phantom. There were no significant differences in the radiation dose among the tube voltages and phantoms (P > 0.05). Our comparison of the radiation dose using anthropomorphic phantoms of young children showed that the radiation dose of nonenhanced CT performed at different tube voltages with TCM was not significantly different.

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