Radiology Search - The Right Place for Searching Radiology Information ... A Radiology search engine developed for Radiologists by Radiologists ...
...the most exciting new development in modernized patient care...(read more)
Search Radiology contents from thousands of peer reviewed Radiology websites and hundreds of Radiology journals!



Include: Semantic search :: Video search :: Quick image search
My Search :: About :: What's new :: Forum :: Online Tutorial :: Feedback :: Contact Us :: Home


Bookmark and Share

Published: . Dec 2014


Tobalem F, Dugert E, Verdun FR, Dunet V, Ott JG, Rudiger HA, Cherix S, Meuli R, Becce F

MDCT arthrography of the hip: value of the adaptive statistical iterative reconstruction technique and potential for radiation dose reduction.
(AJR Am J Roentgenol)

The purpose of this article is to assess the effect of the adaptive statistical iterative reconstruction (ASIR) technique on image quality in hip MDCT arthrography and to evaluate its potential for reducing radiation dose. Thirty-seven patients examined with hip MDCT arthrography were prospectively randomized into three different protocols: one with a regular dose (volume CT dose index [CTDIvol], 38.4 mGy) and two with a reduced dose (CTDIvol, 24.6 or 15.4 mGy). Images were reconstructed using filtered back projection (FBP) and four increasing percentages of ASIR (30%, 50%, 70%, and 90%). Image noise and contrast-to-noise ratio (CNR) were measured. Two musculoskeletal radiologists independently evaluated several anatomic structures and image quality parameters using a 4-point scale. They also jointly assessed acetabular labrum tears and articular cartilage lesions. With decreasing radiation dose level, image noise statistically significantly increased (p=0.0009) and CNR statistically significantly decreased (p=0.001). We also found a statistically significant reduction in noise (p=0.0001) and increase in CNR (p≤0.003) with increasing percentage of ASIR; in addition, we noted statistically significant increases in image quality scores for the labrum and cartilage, subchondral bone, overall diagnostic quality (up to 50% ASIR), and subjective noise (p≤0.04), and statistically significant reductions for the trabecular bone and muscles (p≤0.03). Regardless of the radiation dose level, there were no statistically significant differences in the detection and characterization of labral tears (n=24; p=1) and cartilage lesions (n=40; p≥0.89) depending on the ASIR percentage. The use of up to 50% ASIR in hip MDCT arthrography helps to reduce radiation dose by approximately 35-60%, while maintaining diagnostic image quality comparable to that of a regular-dose protocol using FBP.

-> Read fulltext

Read more articles from the authors:
1. Tobalem F
2. Dugert E
3. Verdun FR
4. Dunet V
5. Ott JG
6. Rudiger HA
7. Cherix S
8. Meuli R
9. Becce F


Related articles

Read abstract in PubMed

Do search in PubMed

Copy citation:

Export to Bibtex
Export to EndNote
Export to Reference Manager



Bookmark and Share

Add to Yahoo    Add to Del.icio.us    Add to Google    Add to AOL    Add to Furl    Add to Connotea    Add to Citeulike    Add to Stumbleupon    Add to Dissect medicine    Add to 2collab   

Add Radiology Search to your search engines :: Put Radiology Search on your website :: Make Radiology Search your homepage :: Add Radiology Search to your favorites
© 2017 Radiology Search