Spleen size correlates with height in tall healthy athletes. Nomograms from this data can be used to gauge the risk of returning to play after episodes of acute splenomegaly, as with infectious mononucleosis.

Postoperative signal intensity changes consistent with tendonitis or tendinosis were common, and clinically "silent" partial and complete rotator cuff tears were seen. Such postoperative MR imaging findings should be interpreted with caution, and meticulous correlation with symptoms and clinical results is recommended.

MRI provided considerable additional information compared with sonography and affected clinical decision making in a substantial number of patients. MRI should be considered in all patients being evaluated for uterine artery embolization.

This report describes and discusses the clinical, MRI, and pathologic findings in a case of synovial sarcoma arising within a peripheral nerve. Intraneural origin of synovial sarcoma is very unusual, and the MR imaging appearance of this condition has not been previously reported. MR imaging was valuable, as it showed the intraneural location and extent of the tumor, but it did not allow a specific histologic diagnosis.

Pseudoenhancement is greater on a multidetector than a single detector helical CT scanner and may exceed 20 HU at physiological levels of renal enhancement.

No abstract

Complex congenital fetal abnormalities are optimally evaluated with both ultrasound and magnetic resonance imaging. With the advent of ultrafast imaging sequences, fetal imaging has significantly improved. We present two cases of conjoined thoracoomphalopagus twins to discuss this unusual anomaly and to illustrate the recent advances in magnetic resonance imaging of the fetus.

Fifty-two patients with known or suspected hypervascular malignancy were examined to determine the technical feasibility of performing single-breath-hold dynamic subtraction computed tomography (CT) of the liver with multi-detector row helical CT. The precontrast and hepatic arterial CT scans, which were acquired during the same breath hold, were subtracted. The mean liver-to-muscle contrast ratio on the precontrast, hepatic arterial, and subtracted images was 1.3, 1.4, and 2.3, respectively. In 13 patients with lesions, the subtracted images showed a 2.5-fold increase in mean lesion contrast compared with the hepatic arterial CT scans.