Pulmonary 64-MDCT angiography with 50 mL of iodinated contrast material in an unselected patient population: a feasible protocol.

Objective: To propose a protocol for pulmonary angiography using 64-slice multidetector computed tomography (64-MDCT) with 50 mL of iodinated contrast material, in an unselected patient population, as well as to evaluate vascular enhancement and image quality.

Materials And Methods: We evaluated 29 patients (22-86 years of age). The body mass index ranged from 19.

Magnetic resonance imaging of the chest: current and new applications, with an emphasis on pulmonology.

The objective of the present review study was to present the principal applications of magnetic resonance imaging (MRI) of the chest, including the description of new techniques. Over the past decade, this method has evolved considerably because of the development of new equipment, including the simultaneous interconnection of phased-array multiple radiofrequency receiver coils and remote control of the table movement, in addition to faster techniques of image acquisition, such as parallel imaging and partial Fourier acquisitions, as well as the introduction of new contrast agents. All of these advances have allowed MRI to gain ground in the study of various pathologies of the chest, including lung diseases.

Magnetization transfer ratio as a predictor of malignancy in breast lesions: preliminary results.

MRI is an important tool for investigating breast cancer. Although recognized as the method of choice for screening high-risk patients, and for other indications the role of MRI for lesion characterization remains controversial. Recently some authors have advocated the use of morphologic and postcontrast features for this purpose.

Disseminated cysticercosis with pulmonary involvement.

Cysticercosis is an important public health problem in developing countries. The central nervous system is the major site of involvement, although striated muscles and subcutaneous tissue are frequently involved in the disseminated form of disease. We describe a recent case in which pulmonary nodules due to cysticercosis were detected on CT and MRI.

Duplex Doppler sonography of transplant renal artery stenosis.

Purpose: The aim of this study was to evaluate the accuracy of duplex Doppler sonography in diagnosing transplant renal artery stenosis (TRAS) and to determine which parameter is the most reliable for making that diagnosis.

Methods: Over a 3-year period, we sonographically evaluated patients who were referred for investigation of possible TRAS. We investigated the following parameters: peak systolic velocity (PSV) in the external iliac and renal arteries, acceleration time and acceleration in the intrarenal arteries, acceleration time in the renal artery, resistance index, and the ratio of the PSVs in the renal and external iliac arteries.

Magnetic resonance imaging of scrotal diseases: when it makes the difference.

Objectives: To investigate the utility of magnetic resonance imaging (MRI) after inconclusive sonography in the evaluation of scrotal disease.

Methods: From 1993 to 1999, 622 patients underwent ultrasonography (US) with state-of-the-art equipment to evaluate scrotal diseases. Twenty-six patients, two with bilateral and distinct diseases (age range 1--63 years, mean 33), had an inconclusive sonogram and were sent for MRI.