Purpose: To evaluate the diagnostic efficacy and safety of MnDPDP (Teslascan) in enhanced MR imaging.
Material And Methods: In 2 multiple independent trials in Europe 624 patients were given MnDPDP intravenously at 5 mumol/kg b.w. Patients underwent an unenhanced MR examination comprising T1-weighted spin-echo and breath-hold gradient-echo sequences and a T2-weighted spin-echo sequence. The T1 sequences were repeated after the administration of MnDPDP. In a subgroup of 137 patients the results of the enhanced MR images were compared with the results of contrast-enhanced CT (CECT) images.
Results: For both types of T1-weighted sequences and when evaluating the maximum numbers of lesions seen in all imaging sequences, the total numbers of lesions seen were significantly higher in the MnDPDP-enhanced images than in the unenhanced images (p = 0.0005 and p = 0.0001, respectively). The investigators considered the enhanced images to contain "other additional information not found in the unenhanced images" in 279 (45%) of the 621 patients examined. The MnDPDP-enhanced images were also superior to the CECT images in the detection of lesions (p = 0.02). Adverse events were reported by 46 patients (7%) and infusion-associated discomfort by 26 (4%). Heart rates and systolic and diastolic blood pressures showed no clinically significant changes from baseline as a result of the administration of the contrast medium.
Conclusion: MnDPDP was shown to be effective and safe in enhanced MR imaging of the liver.
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