Diagnostic performance of low field MRI in acute knee injuries

In vivo contact areas of the knee in patients with patellar subluxation

“…The correlation with the validated analysis at 1.5 T was moderate to high (Table 1) and all differences between open-and closed MRI measurements had 95% confidence intervals of 10% or less (Table 2). Differences in accuracy between various compartments of the knee may be caused by differences in the level of geometric complexity of the cartilage relative to spatial resolution (Kinnunen et al, 1994). Although a higher spatial resolution can be achieved with open MRI, this is at the expense of the aquisition times, potentially increasing the risk of movement artifacts (von Eisenhart-Rothe et al, 2004b).…”

MRI-confirmed tear and spontaneous healing of the anterior cruciate ligament

“…The successful use of low-field scanning in the assessment of acute knee injuries is well documented in the literature. 2,6 The diagnostic accuracy of open, low-field MRI has been shown to be comparable to high-field units. The experience level of the examiner has also been reported as an important factor.…”

“…The experience level of the examiner has also been reported as an important factor. 6 Our reporting radiologists are both experts in musculoskeletal radiology.…”

MRI preferable to diagnostic arthroscopy in knee joint injuries a double-blind comparison of 47 patients

“…The lower sensitivity of detecting tears of the lateral meniscus by MRI is well known (Table 2), although the numbers are conflicting, with sensitivity ranging from 25% to 100%. One study concluded that, if a tear of the lateral meniscus is suspected, MRI cannot be recommended (Kinnunen et al 1994). On the other hand, it is well known that the clinical examination of the knee is often inaccurate (Simonsen et al 1984, Fowler andLubliner 1989).…”

“…1993, Kinnunen et al 1994, Kersting-Sommerhoff et al 1995. 4 of the studies used magnets with a field strength of less than 0.3 T, ranging from 0.064 T (D'Erme et al 1992) to 0.2 T (Kersting-Sommerhoff et al 1995).…”