title: A note on the compartmental analysis and related issues in laser Doppler flowmetry.
abstract: Compartmental analysis (CA) in laser Doppler flowmetry (LDF) means deciphering the nutritional and thermoregulating flows from the measured perfusion flux. Based on the new theories proposed in [1] and [2], the CA is formulated here as an optimal approximation without directly involving the geometric information of the vessel network. It is seen that this approximation approach could also solve the biological zero (BZ) problem simultaneously, therefore, it actually provides a systematic solution to the BZ problem without estimating the BZ flux experimentally. In addition, the BZ problem with compartmental differences is reformulated, and the condition under which multiple compartments can be treated as a single one is investigated. The result, together with some computer simulations, showed that the theory in [2] is still an easy and useful approximation in practice. This note serves as an useful supplement to [1] and [2] and may help to solve and clarify some critical problems in LDF.
authors.affiliation: Department of Biomedical Engineering, Linköping University, Sweden. jicun.zhong@nexgen.synectics.se
authors.forename: J
authors.initials: J
authors.lastname: Zhong
authors.forename: G E
authors.initials: GE
authors.lastname: Nilsson
authors.forename: G E
authors.initials: GE
authors.lastname: Salerud
authors.forename: A M
authors.initials: AM
authors.lastname: Seifalian
mesh_terms: D001825:Body Fluid Compartments; D001833:Body Temperature Regulation; D017078:Laser-Doppler Flowmetry; D008955:Models, Cardiovascular