[An MRI study of primary testicular tumors].
Magnetic resonance imaging (MRI) is a high performance tool for morphological assessment and tissue characterization in the presurgical work-up of scrotal tumors. A wait-and-see attitude is now possible for benign lesions identified as epidermoid cysts. Pathology examination remains more pertinent for an exhaustive assessment of local extension, but MRI can provide a convincing, if not definitive, distinction between seminomatous and non-seminomatous germ cell tumors.
Abstract : JAYCOR determined that much of the pressure trace detail from the M-198 155mm howitzer with the M203 charge could be understood in terms of gas dynamics and the gun and ground geometry. The objective was to determine the feasibility of simulating the far field muzzle blast and to interpret the field data already taken. A lung model was also developed which gives a way of comparing various pressure traces in terms of the internal dynamics. The agreement seen between measured and predicted pressure traces is repeated in the lung response. A bio- mechanical workshop was also held in Albuquerque, New Mexico on lung modeling. (Author)