Dynamic contrast-enhanced MR imaging in osteoid osteoma: relationships with clinical and CT characteristics

Abstract

This study suggests more abundant vascularization of OOs with long-lasting pain and location on short or flat bones.

Osteoid osteoma of the hip: imaging features

“…7) [49]. Pottecher et al used a variable time resolution and suggested that to eliminate the Nyquist limit, a temporal resolution of 3 s would be required [28]. These observations also support the use of angiographic imaging on 4D MRI [50].…”

“…Using sequences repeated every 30 s after the administration of gadolinium, Liu et al showed that OOs exhibit a peak in signal enhancement during the arterial phase in 82% of the cases [44]. Several subsequent studies confirmed that this enhancement pattern was present in 82 to 100% of OOs using temporal resolutions that varied between 12 and 30 s [28,[45][46][47][48]. Some authors used a higher temporal resolution (sequences repeated every 3 s) and demonstrated that an enhancement delay of less than 6 s between the lesion and an adjacent artery was also a typical characteristic of OO ( Fig.…”

“…Dynamic contrast-enhanced MR imaging (DCE-MRI) can contribute to increase the degree of diagnostic confidence of an OO [28]. Using sequences repeated every 30 s after the administration of gadolinium, Liu et al showed that OOs exhibit a peak in signal enhancement during the arterial phase in 82% of the cases [44].…”

“…On DCE-MRI, osteomyelitis enhances gradually without an early arterial peak unlike OO (Fig. 8) [28,44,51].…”

“…3 ). Their maximum diameter is about 1 mm, and these vascular grooves can be detected in about 80% of cases on high-resolution CT images [ 28 ].

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