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An MRI rating scale for amyloid-related imaging abnormalities with edema or effusion
Barkhof F, Daams M, Scheltens P, Brashear HR, Arrighi HM, Bechten A, Morris K, McGovern M et al.. AJNR. American journal of neuroradiology, 2013-02-22
Topic: Plasma and spinal-fluid biomarkers
Background and purpose Immune therapy against amyloid-β appears to be a promising target in Alzheimer disease. However, a dose-related risk for ARIA on FLAIR images thought to represent parenchymal vasogenic edema or sulcal effusion (termed "ARIA-E"), has been observed in clinical trials. To assess the intensity of ARIA-E presentation, an MR imaging scale that is both reproducible and easily implemented would assist in monitoring and evaluating this adverse event. Materials and methods On the basis of a review of existing cases from a phase II bapineuzumab study, a scale was constructed with a 6-point score for the 6 regions on each side of the brain (range, 0-60). Scores would be obtained for both parenchymal and sulcal hyperintensities and frequently co-occurring gyral swelling. Inter-rater reliability between 2 neuroradiologists was evaluated in 20 patients, 10 with known ARIA-E and 10 without, by using the intraclass correlation coefficient. Results The 2 raters had excellent agreement in the identification of ARIA-E cases. A high inter-rater agreement was observed for scores of parenchymal hyperintensity (ICC = 0.83; 95% CI, 48-96) and sulcal hyperintensity (ICC = 0.89; 95% CI, 63-97) and for the combined scores of the 2 ARIA-E findings (ICC = 0.89; 95% CI, 62-97). Gyral swelling scores were observed to have lower inter-rater agreement (ICC = 0.54; 95% CI, -0.06-0.86). Conclusions The proposed rating scale provides a reliable and easily implemented instrument to grade ARIA-E imaging findings. We currently do not recommend including swelling.
Key findings
- Results The 2 raters had excellent agreement in the identification of ARIA-E cases.
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Study details
- Participants20
- Evidence strengthLow
How this study scored 57/100
Published in a peer-reviewed journal, and it is a mid-stage phase 2 trial. Scored zero for effect reported and randomised / blinded because the record does not state it. We have no data on journal's citation record, times cited, citations per year, impact for its field and year, cited by studies here, still being cited, senior author's track record, institution's track record and multi-centre collaboration, so those were left out: it earned 33 of the 58 points we could judge it on, which is 57 out of 100.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (AJNR. American journal of neuroradiology) |
| Journal's citation record | — / 4 | No journal record from OpenAlex — left out of this score |
| Study design | 8 / 12 | A mid-stage phase 2 trial (from PubMed type “Clinical Trial, Phase II”) |
| Strength of evidence | 1 / 5 | Rated “low” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 1 / 5 | 2013 — within 20 year(s) of the newest study here |
| Sample size | 1 / 4 | 20 participants |
| Effect reported | 0 / 3 | No effect size reported — scores zero (not stated in the record — scored 0) |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 0 / 2 | No randomisation or blinding stated — scores zero (not stated in the record — scored 0) |
| Times cited | — / 7 | No citation count (not found in OpenAlex) — left out of this score |
| Citations per year | — / 5 | No citation count or no year — left out of this score |
| Impact for its field and year | — / 6 | No field-weighted citation impact (OpenAlex has none yet) — left out of this score |
| Cited by studies here | — / 6 | Not yet checked against this library's citation graph — left out of this score |
| Still being cited | — / 4 | No yearly citation counts — left out of this score |
| Senior author's track record | — / 4 | Senior author's record not available — left out of this score |
| Institution's track record | — / 3 | No institution listed in OpenAlex — left out of this score |
| Multi-centre collaboration | — / 3 | Institutions not listed — left out of this score |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 23436056) |
| Free to read | 0 / 2 | Behind a paywall — scores zero |
| Points | 33 / 58 | Scored on 11 of 20 parts. We have no data for the rest, so they are left out: 33 of the 58 points we could judge it on is 57 out of 100. |
| Total | 57 / 100 | — |
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Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record's author list ends in “et al.”, so not every author is named. Check the citation against the original before you use it.
APA 7th
Barkhof, F., Daams, M., Scheltens, P., Brashear, H. R., Arrighi, H. M., Bechten, A., et al. (2013). An MRI rating scale for amyloid-related imaging abnormalities with edema or effusion. AJNR. American journal of neuroradiology. https://doi.org/10.3174/ajnr.a3475
Vancouver
Barkhof F, Daams M, Scheltens P, Brashear HR, Arrighi HM, Bechten A, et al. An MRI rating scale for amyloid-related imaging abnormalities with edema or effusion. AJNR. American journal of neuroradiology. 2013. doi:10.3174/ajnr.a3475. PMID: 23436056.
BibTeX
@article{barkhof2013-23436056,
author = {Barkhof, F. and Daams, M. and Scheltens, P. and Brashear, H. R. and Arrighi, H. M. and Bechten, A. and Morris, K. and McGovern, M. and others},
title = {{An MRI rating scale for amyloid-related imaging abnormalities with edema or effusion}},
journal = {AJNR. American journal of neuroradiology},
year = {2013},
doi = {10.3174/ajnr.a3475},
pmid = {23436056},
url = {https://doi.org/10.3174/ajnr.a3475}
}
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