Third-generation dual-source 70-kVp chest CT angiography with advanced iterative reconstruction in young children: image quality and radiation dose reduction

Journal article


Publication Details

Author(s): Rompel O, Glöckler M, Janka RM, Dittrich S, Cesnjevar R, Lell M, Uder M, Hammon M
Journal: Pediatric Radiology
Publication year: 2016
Volume: 46
Journal issue: 4
Pages range: 462-72
ISSN: 0301-0449


Abstract


Many technical updates have been made in multi-detector CT.To evaluate image quality and radiation dose of high-pitch second- and third-generation dual-source chest CT angiography and to assess the effects of different levels of advanced modeled iterative reconstruction (ADMIRE) in newborns and children.Chest CT angiography (70 kVp) was performed in 42 children (age 158 ± 267 days, range 1-1,194 days). We evaluated subjective and objective image quality, and radiation dose with filtered back projection (FBP) and different strength levels of ADMIRE. For comparison were 42 matched controls examined with a second-generation 128-slice dual-source CT-scanner (80 kVp).ADMIRE demonstrated improved objective and subjective image quality (P < .01). Mean signal/noise, contrast/noise and subjective image quality were 11.9, 10.0 and 1.9, respectively, for the 80 kVp mode and 11.2, 10.0 and 1.9 for the 70 kVp mode. With ADMIRE, the corresponding values for the 70 kVp mode were 13.7, 12.1 and 1.4 at strength level 2 and 17.6, 15.6 and 1.2 at strength level 4. Mean CTDIvol, DLP and effective dose were significantly lower with the 70-kVp mode (0.31 mGy, 5.33 mGy*cm, 0.36 mSv) compared to the 80-kVp mode (0.46 mGy, 9.17 mGy*cm, 0.62 mSv; P < .01).The third-generation dual-source CT at 70 kVp provided good objective and subjective image quality at lower radiation exposure. ADMIRE improved objective and subjective image quality.



FAU Authors / FAU Editors

Cesnjevar, Robert Prof. Dr.
Kinderherzchirurgische Abteilung in der Herzchirurgischen Klinik
Dittrich, Sven Prof. Dr.
Professur für Kinderkardiologie
Glöckler, Martin PD Dr.
Kinderkardiologische Abteilung in der Kinder- und Jugendklinik
Hammon, Matthias PD Dr.
Radiologisches Institut
Janka, Rolf Matthias Prof. Dr.
Medizinische Fakultät
Lell, Michael Prof. Dr.
Medizinische Fakultät
Uder, Michael Prof. Dr.
Lehrstuhl für Diagnostische Radiologie


How to cite

APA:
Rompel, O., Glöckler, M., Janka, R.M., Dittrich, S., Cesnjevar, R., Lell, M.,... Hammon, M. (2016). Third-generation dual-source 70-kVp chest CT angiography with advanced iterative reconstruction in young children: image quality and radiation dose reduction. Pediatric Radiology, 46(4), 462-72. https://dx.doi.org/10.1007/s00247-015-3510-x

MLA:
Rompel, Oliver, et al. "Third-generation dual-source 70-kVp chest CT angiography with advanced iterative reconstruction in young children: image quality and radiation dose reduction." Pediatric Radiology 46.4 (2016): 462-72.

BibTeX: 

Last updated on 2018-07-10 at 02:23