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Dynamic MR imaging of osteoid osteomas: correlation of semiquantitative and quantitative perfusion parameters with patient symptoms and treatment outcome.

Abstract：

OBJECTIVE:To evaluate the relationship between multiple MR perfusion parameters and symptoms of patients with osteoid osteomas after percutaneous laser therapy. METHODS:MR perfusion studies of 20 patients diagnosed with an osteoid osteoma, treated with CT-guided percutaneous laser therapy, were retrospectively evaluated. Multiple perfusion parameters correlated with the treatment outcome and the presence of osteoid osteoma-related symptoms. RESULTS:There were 16 successful treatments, 6 recurrences and a significant difference in the perfusion parameters of these groups (P < 0.0001). Patients with successful treatment demonstrated delayed progressive enhancement or no enhancement (mean time to peak = 182 s, mean delay to the arterial peak = 119.3 s). Patients with treatment failure demonstrated an early and steep enhancement (mean time to peak = 78 s and mean delay to the arterial peak = 24 s). Plasmatic volume and transfer constant values significantly changed after successful treatment (P < 0.008). MR perfusion has a sensitivity and a specificity higher than 90 % in the detection of recurrent osteoid osteomas. CONCLUSION:The identification of an early and steep enhancement with short time to peak and a short delay between the arterial and nidus peaks on MR perfusion in the postoperative setting is highly indicative of an osteoid osteoma recurrence. Key points • Magnetic resonance perfusion is becoming widely used for several tumours. • MR perfusion measurements correlate well with osteoid osteoma-related symptoms. • MR perfusion has high diagnostic performance for osteoid osteoma recurrence. • MR perfusion can improve the diagnostic confidence of osteoid osteoma recurrence.

journal_name

Eur Radiol

journal_title

European radiology

authors

Teixeira PA,Chanson A,Beaumont M,Lecocq S,Louis M,Marie B,Sirveaux F,Blum A

doi

10.1007/s00330-013-2867-1

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

2602-11

issue

9

eissn

0938-7994

issn

1432-1084

journal_volume

23

pub_type

杂志文章

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