Abstract:

Purpose: Evaluation of the effectiveness of dynamic contrasted magnetic resonance imaging (DK MRG) in the distinction between benign and malign damage in bone tumors. Method: 37 patients comprised of 18 men and 19 women with a direct graphic bone tumor (ort. Age: 33.3; age range: 11-69) was included in the study. Since one patient has two different bone tumors, a total of 38 injuries (29 benign, 9 malign) DK MRG was performed. In DK MRG, 2 categories were defined according to the signal intensity-time curves (SIZ). The curves measure the relative contrast rate (K1) in the first minute and the curves curves. Results: According to SIZ curves; 24 of the 29 benign bone tumors (82.8%) showed contrast in accordance with category 1, 5 (17.2%) category 2. The total of nine malignant bone tumors (100%) were assessed as compatible with category 2 contrast. In the distinction of benign and malign injuries, the sensitivity of the 85% marginal value for K1 was 100%, the specificity of it was 86.2% (p<0,001). The sensitivity of the marginal value of 84.1 % and the specificity of 82.8 % were found (p<0,001). The result: in DK MRG, benign lesions are slower and less, and malign lesions are faster and higher in contrast retention. With the K1 values, SIZ curve curves give similar results in the diagnostic accuracy, and the first minute of DK MRG provides the most important data in the distinction between benign and malign lesions.