It can be classified according to their configuration , shape , content , and can be described specifically with an anatomical term . “
Rheumatoid arthritis is a chronic inflammatory disease characterized by the development of osseous and cartilaginous damage .
The correct differentiation between a true erosion and other entities — then often called “ pseudoerosions”—is essential to avoid misdiagnosing rheumatoid arthritis and to correctly interpret the progress of the disease .
The aims of this systematic review were as follows : to create a definition and delineation of the term “ pseudoerosion ” , to point out morphological pitfalls in the interpretation of images , and to report on difficulties arising from choosing different imaging modalities .
Susceptibility-weighted MR imaging to improve the specificity of erosion detection: a prospective feasibility study in hand arthritis
Objective To evaluate the diagnostic potential of susceptibility-weighted imaging ( SWI ) for the detection of erosions of the h and , compared to T1-weighted ( T1w ) magnetic resonance imaging ( MRI ) . Computed tomography ( CT ) was used as a reference st and ard . Material s and methods We prospect ively investigated 37 patients with suspected arthritic activity of the h and . All patients underwent T1w , SWI , and CT on the same day . Patients were r and omized to MRI or CT  first . CT , T1w , SWI , and T1w/SWI were scored for erosions according to OMERACT RAMRIS guidelines . Specificity , sensitivity , and diagnostic accuracy were separately calculated for T1w , SWI , and T1w/SWI on a per-patient and per-bone basis using CT as reference . The one-tailed McNemar test was performed to test the number of erosion-positive patients in T1w , SWI , and T1w/SWI for non-inferiority . Measured erosion sizes were compared using Pearson ’s test . Results CT was positive for erosions in 16 patients and 55 bones . SWI and T1w/SWI had superior diagnostic accuracy ( 91.2 and 93.8 % ) compared to T1w ( 87.8 % ) driven by a higher specificity ( 93.8 and 96.5 % ) compared to T1w ( 88.8 % ) . On the patient level , SWI and T1w/SWI showed non-inferiority ( p = 0.11 and p = 0.38 ) but not T1w alone ( p < 0.0001 ) . The lesion size on CT correlated better with SWI ( Pearson ’s r = 0.92 ) compared to T1w ( r = 0.69 ) . Conclusions Adding SWI to a st and ard MRI protocol has the potential to improve erosion detection in h and s by increasing specificity . SWI depicts bony erosions more accurately compared to st and ard MRI techniques
It can be classified according to their configuration , shape , content , and can be described specifically with an anatomical term . “
Rheumatoid arthritis is a chronic inflammatory disease characterized by the development of osseous and cartilaginous damage .
The correct differentiation between a true erosion and other entities — then often called “ pseudoerosions”—is essential to avoid misdiagnosing rheumatoid arthritis and to correctly interpret the progress of the disease .
The aims of this systematic review were as follows : to create a definition and delineation of the term “ pseudoerosion ” , to point out morphological pitfalls in the interpretation of images , and to report on difficulties arising from choosing different imaging modalities .