Assessment of radiation dose from abdominal quantitative CT with short scan length

Li, Xinhua; Yang, Kai; DeLorenzo, Matthew C.; Liu, Bob

doi:10.1259/bjr.20160931

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Despite the presence of a law regulating radiation protection and a national radiation protection agency in Cameroon 21 , the limitation of acquisition coverage remains uncertain in each hospital. The American Association of Physicists in Medicine (AAPM) Reports 111 and 204 have shown that the radiation dose from patient CT scanners depends on their size and length of scan 18 . Published studies have shown that reducing acquisition coverage 22 , 23 is a simple and effective way to limit the dose of patients and is recommended in clinical practice.…”

Section: Discussionmentioning

confidence: 99%

Optimization of the scan length of head traumas on the pediatric and adult CT scan and proposition of a new acquisition limit

Eddy

Ngano

Jervé

et al. 2021

Sci Rep

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To propose a new method of reducing the scan length of head trauma while keeping the diagnostic efficiency of the examination in order to develop DRL in an African context. This is a retrospective single-center study including 145 patients who had cranial examinations on a 64-barettes scanner. All head trauma cases were selected. The interpretations of these CT scanners by the three radiologists of the service were noted to determine the acquisition limit. All patient acquisition lengths have been recorded. The acquisition limit for head trauma ended in clinical routine at cervical spine 4 (C4). The average scan length was 23.03 cm. Out of the CT scan results for 145 patients, only 2 (1.37%) had a C3 level cervical spine fracture and 2 (1.37%) at C4. By respecting the principles of radiation protection, this result has shown us that it is possible to limit the acquisition length of the CT scanners indicated for head trauma. The limit of the optimized scan length that we proposed is at cervical spine 2 (98.62%). Now, all head trauma are limited on cervical vertebra 2 in our hospital. The use of this new method is beneficial when the clinical indication of the examination and the type of trauma (multi-trauma) are taken into account. Based on the principles of radiation protection and the clinical indication for the examination, reducing the scan length from C4 to C2 is an effective way to reduce the dose absorbed by the patient.

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Section: Discussionmentioning

confidence: 99%

Optimization of the scan length of head traumas on the pediatric and adult CT scan and proposition of a new acquisition limit

Eddy

Ngano

Jervé

et al. 2021

Sci Rep

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show abstract

“…Radimetrics, researched and developed by Byer Healthcare from Germany, an analysis platform based on Monte-Carlo-Simulation was used to calculate the radiation doses of sensitive organs. 14,15 The total organ dose is calculated first for each slice using the CTDI vol at that slice and then summed over the slices that all into the scan region:…”

Section: Organ-specific-radiation Dose Levels Estimationmentioning

confidence: 99%

A Preliminary Study of Personalized Head CT Examination in Pediatric

Bian

Zhou

Wang

et al. 2019

Preprint

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Background: Same head CT examination protocol was employed for pediatric patients who’s skull sizes are different , this could be excessive radiation doses because they usually have smaller head circumference. In our study, we investigate if mAs according to head circumference(HC) reduce radiation doses of sensitive organs including brain, eye lens and salivary glands, but could keep the image quality. Methods: 83 pediatric patients were prospectively selected. Without limiting the head circumference, 15 pediatrics were selected as conventional group by random number method and received routine head CT examination protocol (250mAs). Low-dose group including remaining 68 patients were divided into 3 subgroups based on HC: 54.1-57.0cm for group A(200mAs), 51.1-54.0cm for group B(150mAs), 48.1-51.0cm for group C(100mAs). The Image quality was assessed by subjective and objective image score. Radimetrics was used to calculate radiation doses of sensitive- organs. Results: In the conventional group, pediatric patients with smaller head circumference receive higher radiation doses of sensitive-organs. Radiation doses of brain and salivary glands were negatively correlated with HC. The radiation dose of sensitive-organs in 3 low-dose subgroups were significantly lower than conventional group. The subjective image quality scores in group A and B was no statistical different than conventional group. The SNR of thalamus and centrum ovale in low-dose subgroups were no statistical differences compared with conventional group. Conclusions: Our research indicates that personalized brain CT examination in pediatrics can reduce the radiation doses of sensitive-organs but keep image quality. HC can serve as an effective index to guide personalized head CT scan.

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National survey on dose data analysis in computed tomography

et al. 2018

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• Swiss radiological departments are committed to and interest in radiation safety as proven by a 63% return rate of the survey. • Seventy-nine per cent of departments analyse dose data on a regular basis with differences in the frequency and method of analysis: 42% use a dose management software, while 58% currently perform manual dose data analysis. Of the latter, 43% plan to buy a dose management software. • Currently, only 25% of the departments add radiation exposure data to the final CT report.

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Assessment of radiation dose from abdominal quantitative CT with short scan length

Cited by 4 publications

References 10 publications

Optimization of the scan length of head traumas on the pediatric and adult CT scan and proposition of a new acquisition limit

Optimization of the scan length of head traumas on the pediatric and adult CT scan and proposition of a new acquisition limit

A Preliminary Study of Personalized Head CT Examination in Pediatric

National survey on dose data analysis in computed tomography

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