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Il Giornale Italiano di Radiologia Medica 2018 Novembre-Dicembre;5(6):726-33

DOI: 10.23736/S2283-8376.18.00133-X

Copyright © 2018 EDIZIONI MINERVA MEDICA

language: Italian

Dual energy CT for assessing bone marrow edema: comparison with MRI

Alberto DORIGO , Michele FUSARO, Nicola ROMA, Nicola REBELLATO, Giovanni MORANA

UOC di Radiologia Diagnostica e Interventistica, AULSS 2 Veneto, Ospedale Regionale Ca’ Foncello, Treviso, Italia


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BACKGROUND: The aim of this study was to evaluate efficacy of material decomposition technique for dual energy CT (DECT) for assessing bone marrow edema in comparison with Magnetic Resonance Imaging.
METHODSː Fifty-seven patients (age 22-83 years) eligible for bone CT, with clinical onset of acute osteoarticular pain, but non-diagnostic X-ray, underwent DECT examination with Dual Source scanner (Siemens Somatom Definition Flash); than they underwent MRI (Siemens Magnetom Avanto 1,5T). The postprocessing with material decomposition algorithm allowed colored maps for distinguish edema from marrow adipose tissue. The presence and the site of edema in DECT and MRI were compared and the concordance between the two imaging techniques was calculated by K index of Cohen.
RESULTSː Thirty-four patients presented with pain after trauma. In 22 of those, edema was found in DECT images (contusions, fractures, stress lesions). Edema was not found in other 12 patients. In this group concordance with MRI was 0,941, with a K of Cohen 0,871 (excellent). Twenty-three patients had presented with non-traumatic pain. In 13 of those, edema was found in DECT images (osteochondral lesions, algodystrophy, osteonecrosis, arthritis). Edema was not found in other 10 patients. In this group concordance with MRI was 0,870, with a K of Cohen 0,732 (good).
CONCLUSIONSː In our study material decomposition technique applied to DECT examinations of bone allowed the identification of bone marrow edema with an high concordance with MRI both in traumatic and non-traumatic clinical settings of acute osteoarticular pain.


KEY WORDS: Magnetic resonance imaging - Bone marrow - Edema

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