Mahnken AH, Bücker A, Adam G, Günther RW, et al.
RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin. Date of publication 2000 Dec 1;volume 172(12):1016-9.
1. Rofo. 2000 Dec;172(12):1016-9.
[MRI of osteomyelitis: sensitivity and specificity of STIR sequences in
comparison with contrast-enhaned T1 spin echo sequences].
[Article in German]
Mahnken AH(1), Bücker A, Adam G, Günther RW.
Author information:
(1)Klinik für Radiologische Diagnostik, Universitätsklinikum der RWTH Aachen.
mahnken@rad.rwth-aachen.de
PURPOSE: To evaluate the need for additional MR sequences including
administration of Gd-DTPA after inconspicuous Short-Tau Inversion-Recovery (STIR)
sequence to exclude the diagnosis of osteomyelitis.
MATERIAL AND METHODS: 112 MR examinations of 79 patients acquired for the
detection of possible osteomyelitis were analyzed retrospectively. All
examinations were performed at 0.5 T including STIR, T1-weighted spin echo
sequences (T1 SE) before and after application of Gd-DTPA. Additionally, 93
T2-weighted spin echo sequences were available. The examinations were analyzed by
two experienced radiologists. First, the STIR sequences were studied, followed by
the T1 SE images before and after administration of contrast material. Finally,
the T2-weighted images were evaluated. Diagnoses were confirmed by operation
(22), biopsy (10), and follow-up (80).
RESULTS: In 53 cases osteomyelitis was diagnosed, while the remaining 59 cases
suffered from another disease. The sensitivity of the STIR sequence was 100%
while the specificity for osteomyelitis was 49.2%. The specificity increased to
79.7% by including T1 SE images into the analysis and reached 83.1% after
considering the contrast enhanced images. T2-weighted images yielded no
additional information.
CONCLUSION: The combination of STIR and T1SE images shows a high sensitivity and
specificity for osteomyelitis, thus obviating the need for any additional
examinations.
DOI: 10.1055/s-2000-9226
PMID: 11199429 [Indexed for MEDLINE]
