Welcome to Classifications and Online Calculators in Radiology
to support your knowledge in radiology.
You will find here:
- 115 pages and counting
- Classifications
- Online calculators
- Tables
Moreover:
- Some pages are accompanied by illustrations
- All pages contain tags for easy navigation
The concept
The concept of this website is based on a previous site that was founded in 2008 and is still up and running. The website is composed as a book, where all sources are properly referenced, according to a good practice in scientific publications.Didn't find a classification?
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Featured page
Chondromalacia - MRI grading by modified Outerbridge System
The modified Outerbridge system was published in 2006. It differs from the Outerbridge system in grade I only, the definition of which was adjusted to reflect changes on MRI, because the original system was based on arthroscopic findings.
| Grade | Description |
|---|---|
| Grade 0 | normal cartilage |
| Grade 1 | signal intensity alterations with an intact surface of the articular cartilage compared with the surrounding normal cartilage |
| Grade 2 | partial thickness defect of the cartilage |
| Grade 3 | fissuring of the cartilage to the level of the subchondral bone |
| Grade 4 | exposed subchondral bone |
References:
1. Jungius K-P, Schmid MR, Zanetti M, Hodler J, Koch P, Pfirrmann CWA. Cartilaginous Defects of the Femorotibial Joint: Accuracy of Coronal Short Inversion Time Inversion-Recovery MR Sequence1. Radiology. 2006 Aug 1;240(2):482–8.
2. Crema MD, Roemer FW, Marra MD, Burstein D, Gold GE, Eckstein F, et al. Articular Cartilage in the Knee: Current MR Imaging Techniques and Applications in Clinical Practice and Research. Radiographics. 2011 Jan 1;31(1):37–61.
3. Sonin AH, Pensy RA, Mulligan ME, Hatem S. Grading articular cartilage of the knee using fast spin-echo proton density-weighted MR imaging without fat suppression. AJR Am J Roentgenol. 2002 Nov;179(5):1159–66.
4. Gagliardi JA, Chung EM, Chandnani VP, Kesling KL, Christensen KP, Null RN, et al. Detection and staging of chondromalacia patellae: relative efficacies of conventional MR imaging, MR arthrography, and CT arthrography. AJR Am J Roentgenol. 1994 Sep;163(3):629–36.