公开(公告)号：WO1993000045A1

公开(公告)日：1993-01-07

申请号：PCT/US1992005331

申请日：1992-06-25

Applicant: THE UNITED STATES OF AMERICA, as represented by ...

Inventor： THE UNITED STATES OF AMERICA, as represented by ... ,  KNUTTEL, Alexander ,  KNUTSON, Jay

IPC: A61B06/00

CPC classification number: G01J1/04 ,  G01J1/0422 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0216 ,  G01J2009/0203 ,  G01N21/4795 ,  G01N21/645 ,  G01N21/65 ,  G01N21/76 ,  G01N21/85 ,  G01N27/44721 ,  G01N2021/1738 ,  G01N2021/1759 ,  G01N2021/178 ,  G01N2021/1782 ,  G01N2021/4173 ,  G01N2021/451 ,  G01N2021/4702 ,  G01N2201/0893

Abstract: Imaging of a turbid object utilizes interference among the modulation wavefronts (24) of a plurality of modulated light rays (22) propagating through the object by diffusion and having predetermined phases relative to one another. A computer controlled phase and amplitude selecting device, such as a zone plate (34) is used to modulate light rays at appropriate phases in order to obtain constructive interference only at a predetermined portion of the object, including one or more preselected voxels (26). The rays reflected from (or diffusively transmitted through) the predetermined portion are received simultaneously at a detector (16) thus providing simultaneously all the data necessary to describe or image the portion. A single detector (16) element may be used to detect the scattered reflected or transmitted light from the portion and to generate a signal representing the amplitude and phase characteristics for the modulation wavefront, thereby to provide absorption (and other) characteristics descriptive of the portion.