Keywords:
Interventional non-vascular, Musculoskeletal bone, MR, Ablation procedures
Authors:
F. Arrigoni, L. M. Gregori, A. Conchiglia, L. Zugaro, C. Masciocchi; L'Aquila/IT
DOI:
10.1594/ecr2013/C-0559
Results
Clinical results: After treatment with MRgFUS,
all but one patients showed regression in painful symptomatology with a mean VAS decreasing from 7.9 to 2.3.
In the patient with periosteal chondroma of the femoral neck no improvement in symptomatology was observed.
Imaging results: all patients were assessed by CT and MRI before and after treatment; in particular,
MRI was performed without gadolinium in the four cases of osteoid osteomas (OO) and without and with gadolinium.
In the four cases of OO,
the most important findings were the disappearance,
on CT,
of the typical nidus of the lesion,
and on MRI,
of the intraspongious edema around the nidus.
In chondroblastomas,
fibroangiomas and periosteal chondroma,
not relevant features were found on the CT,
while on MRI,
measuring the c.
e.
in the same ROI on the images performed before and in the control examinations,
we found a reduced contrast enhancement (c.
e.) after i.
v.
administration of gadolinium.
In particular,
we observed a c.
e.
reduction of up to 80% and 90% in the chondroblastoma,
fibroangioma and periosteal chondroma,
respectively.