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 Noyes System
The modified Noyes system was published in 2009. It is a modification of the Noyes grading system for the purpose of MRI grading. The original Noyes grading system was based on arthroscopic findings.
| Grade | Description |
|---|---|
| Grade 0 | normal cartilage |
| Grade 1 | increased T2 signal intensity of morphologically normal cartilage not oriented at 55° to the external magnetic field |
| Grade 2A | superficial partial-thickness cartilage defect <50% of total articular surface thickness |
| Grade 2B | deep partial-thickness cartilage defect >50% of total articular surface thickness |
| Grade 3 | full-thickness cartilage defect |
References:
1. Kijowski R, Blankenbaker DG, Davis KW, Shinki K, Kaplan LD, Smet AAD. Comparison of 1.5- and 3.0-T MR Imaging for Evaluating the Articular Cartilage of the Knee Joint1. Radiology. 2009 Mar 1;250(3):839–48.
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. 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.
