APPARATUS FOR EXAMINING A BODY BY NUCLEAR MAGNETIC RESONANCE BY SLOW AND FAST METHODS, PARTICULARLY FOR EXAMINING THE SURFACE LAYER OF THIS BODY, DEVICE FOR CREATING A GRADIENT OF MAGNETIC FIELD FOR SUCH APPARATUS, AND APPLICATION TO THE SAME HUMAN BODY SKIN IMAGING

摘要

P DEVICE 1 INCLUDES: MEANS 3 TO CREATE A MAIN STATIC H0 MAGNETIC FIELD ORIENTED FOLLOWING A DETERMINED OZ DIRECTION, STATIC FIELD IN WHICH BODY 2 IS STUDYED; DEVICES FOR CREATING MAGNETIC FIELD GRADIENTS IN A VOLUME TO BE EXAMINED OF THE BODY FOLLOWING THREE DIRECTIONS OF SPACE; RADIO FREQUENCY EXCITATION MEANS; AND MEANS FOR DETECTING R SIGNALS OF NUCLEAR MAGNETIC RESONANCE PRODUCED BY THE BODY TO BE STUDIED. ONE OF THE DX DEVICES FOR CREATING GRADIENTS IS CONSTITUTED BY A UNILATERAL SYSTEM IN WHICH THE MEANS 6 FOR CREATING THE GRADIENT OF MAGNETIC FIELD, FOLLOWING A DIRECTION OX OF SPACE, ARE FULLY LOCATED ON THE SAME SIDE OF A SURFACE "OPEN" P, WHILE BODY TO BE STUDYED 2 IS LOCATED ON THE SIDE OF THIS SURFACE P OPPOSITE TO THAT WHERE ARE THE SAID MEANS 6, WHICH ARE SPECIFIC TO CREATE A GRADIENT TRANSVERSE IN RELATION TO THE DIRECTION OZ OF THE MAIN STATIC FIELD, OF SIDE OF THE SURFACE WHERE BODY 2 IS TO BE STUDYED. SUCH A DX DEVICE IS ESPECIALLY SUITABLE FOR NMR IMAGING OF HUMAN SKIN. /P