This paper presents a method to calculate photon-measurement density functions (PMDF’s), which were introduced in Part 1 [Appl. Opt. 34, 7395–7409 (1995), for near-infrared imaging and spectroscopy in complex and inhomogeneous objects through the use of a finite-element model. PMDF’s map the sensitivity of a measurement on the surface of an object to the perturbations of the optical parameters within the object. Data are presented for homogeneous and layered circular objects and for a complex two-dimensional model of a head. In particular the influence of the optical parameters on the shape of the PMDF and the distortions caused by boundary layers and complex inhomogeneties are investigated.
© 1995 Optical Society of America
Original Manuscript: August 26, 1994
Revised Manuscript: June 19, 1995
Published: December 1, 1995
Simon R. Arridge and M. Schweiger, "Photon-measurement density functions. Part 2: Finite-element-method calculations," Appl. Opt. 34, 8026-8037 (1995)