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Systematic Radiation Dose Discount in Cervical Backbone CT of Human Cadaveric Specimens: How Low Can We Go?

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Systematic Radiation Dose Discount in Cervical Backbone CT of Human Cadaveric Specimens: How Low Can We Go?

AJNR Am J Neuroradiol. 2017 Dec 21;:

Authors: Tozakidou M, Reisinger C, Tougher D, Lieb J, Szucs-Farkas Z, Müller-Gerbl M, Studler U, Schindera S, Hirschmann A

Summary
BACKGROUND AND PURPOSE: Whereas using cervical backbone CT in trauma settings has elevated, the stability between picture high quality and dose discount stays a priority. The aim of our research was to check the picture high quality of CT of the cervical backbone of cadaveric specimens at completely different radiation dose ranges.
MATERIALS AND METHODS: The cervical backbone of Four human cadavers (imply physique mass index; 30.5 ± 5.2 kg/m2; vary, 24-36 kg/m2) was examined utilizing completely different reference tube current-time merchandise (45, 75, 105, 135, 150, 165, 195, 275, 355 mAs) and a tube voltage of 120 kV(peak). Information have been reconstructed with filtered back-projection and iterative reconstruction. Qualitative picture noise and morphologic traits of bony buildings have been quantified on a Likert scale. Quantitative picture noise was measured. Statistics included evaluation of variance and the Tukey check.
RESULTS: In contrast with filtered back-projection, iterative reconstruction supplied considerably decrease qualitative (imply noise rating: iterative reconstruction = 2.10/filtered back-projection = 2.18; P = .003) and quantitative (imply SD of Hounsfield items in air: iterative reconstruction = 30.2/filtered back-projection = 51.eight; P < .001) picture noise. Picture noise elevated because the radiation dose decreased. Qualitative picture noise at ranges C1-Four was rated as both “no noise” or as “acceptable noise.” Any shoulder place was at degree C5 and brought about extra artifacts at decrease ranges. After we analyzed all spinal ranges, scores for morphologic traits revealed no important variations between 105 and 355 mAs (P = .555), however they have been worse in scans at 75 mAs (P = .025).
CONCLUSIONS: Clinically acceptable picture high quality of cervical backbone CTs for analysis of bony buildings of cadaveric specimens with completely different physique habitus will be achieved with a reference mAs of 105 at 120 kVp with iterative reconstruction. Pull-down of shoulders throughout acquisition may enhance picture high quality however is probably not possible in trauma sufferers with unknown accidents.

PMID: 29269403 [PubMed – as supplied by publisher]

Related Articles Systematic Radiation Dose Reduction in Cervical Spine CT of Human Cadaveric Specimens: How Low Can We Go? AJNR Am J Neuroradiol. 2017 Dec 21;: Authors: Tozakidou M, Reisinger C, Harder D, Lieb J, Sz...

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