Purpose To investigate feasibility of high-pitch acquisition protocol for imaging of pediatric abdomen. Materials and methods The study group consisted of 90 patients scanned with high-pitch acquisition protocol (pitch = 3) by 64-slice dual-source CT (DSCT) scanner. Fifty-four patients scanned with standard protocol (pitch = 1.5) by 16-slice single- source CT scanner comprised the control group. Anteroposterior and lateral diameters of abdomen, effective diameter, scan time and length, qualitative and quantitative noise levels, volumetric CT dose index (CTDIvol), dose length product (DLP), and size-specific dose estimations were compared between groups. Results The mean scan time of high-pitch CT protocol was shorter than control protocol (1.66 ± 0.31 vs. 4.1 ± 0.75 s; p < 0.001). The high-pitch protocol reduced the radiation dose by 48% (CTDIvol and DLP values 0.94 mGy and 32.2 mGy- cm vs. 1.59 mGy and 61.5 mGy-cm; p < 0.001, respectively). Although image noise was higher with high-pitch acquisition, there was no significant effect on diagnostic confidence. Voluntary and involuntary artifacts were less frequent in high-pitch protocol (p < 0.001). Interobserver agreement was moderate in terms of artifact and very good in terms of diagnostic con- fidence assessment. Conclusion High-pitch acquisition protocol by DSCT yields significant radiation dose reduction without compromising
Japanese Journal of Radiology – Springer Journals
Published: May 28, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
All the latest content is available, no embargo periods.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud