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PubMedDate not supplied

A case of the incomplete double aortic arch diagnosed in adulthood by MR imaging.

Double aortic arch is a rare vascular anomaly, particularly in adults. Most of patients were infants or children. In this report we describe a case of the incomplete double aortic arch in a 55 years old woman complaining of esophageal symptoms was found by esophagography and examined by MR imaging. This anomaly had double aortic arch with partial atresia of the left arch. The right common carotid artery (RCCA) and the right subclavian artery (RSA) arose from the large right aortic arch (RAA). The left common carotid artery (LCCA) and subclavian artery (LSA) arose from the left aortic arch (LAA). Aortic diverticulum was detected at the interior site of the descending aorta connected with the left subclavian artery (LSA). The mediastinal organs were surrounded by the vascular ring (RAA, LAA, LSA and aortic diverticulum).

Aorta, Thoracic↗

PubMedDate not supplied

Assessment of breast cancer with dynamic gadolinium-enhanced MR imaging combined with magnetization transfer contrast using a newly developed breast surface coil for the supine position.

To assess the value of dynamic gadolinium-enhanced MR imaging combined with magnetization transfer contrast (MTC) of breast cancer by SPGR sequence, 15 patients with breast cancer were imaged in the supine position with the newly developed breast coil in a 1.5 Tesla imager. Dynamic gadolinium-enhanced MR imaging combined with MTC (10 cases) and conventional dynamic gadolinium-enhanced MR imaging (5 cases) were performed after the administration of Gd-DTPA (0.2 ml/kg). Sagittal images were obtained every 22 seconds during the first 264 seconds. Thus, a total of 15 images were obtained in each lesion. The signal intensity ratio (SIR) of lesion to mammary glarid was calculated for each image as follows: (SI lesion/SI mammary gland)/(SI (pre)lesion/SI (pre)mammary gland). Dynamic gadolinium-enhanced MR imaging with MTC always allowed better SIR at 88 seconds than conventional dynamic gadolinium-enhanced MR imaging after bolus injection (p < 0.01). Dynamic gadolinium-enhanced MR imaging with MTC improved detection of the boundary of the lesion and mammary gland.

Adult↗