A system for measuring physiological parameters of a patient, the system comprising: a portable measurement system, operable to acquire a physiological measurement from an examined body location of the patient; an external camera, physically separated from the portable measurement system, movable irrespective of the portable measurement system, and operable to capture visible light, the external camera oriented toward the examined body location; an image processing module, operable to: (a) receive image data captured by the external camera at a first time when the portable measurement system is at least partly visible by the external camera; (b) obtain navigation data collected by the portable measurement system, the navigation data being indicative of movement of the portable measurement system over time; (c) process the navigation data and the image data to determine an assessed location of the portable measurement system at a second time in which the portable measurement system is hidden from the external camera; and (d) generate an estimated orientation image on which the assessed location is indicated, based on an image captured by the external camera; a synchronization module, operable to associate to the estimated orientation image a physiological measurement acquired by the portable measurement system at the second time; and a communication module operable to transmit to a remote system: (a) a physiological measurement record based on the physiological measurement acquired at the second time, (b) the estimated orientation image, and (c) association data associating the estimated orientation image and the physiological measurement record. a portable measurement system, operable to acquire a physiological measurement from an examined body location of the patient; an external camera, physically separated from the portable measurement system, movable irrespective of the portable measurement system, and operable to capture visible light, the external camera oriented toward the examined body location; an image processing module, operable to: (a) receive image data captured by the external camera at a first time when the portable measurement system is at least partly visible by the external camera; (b) obtain navigation data collected by the portable measurement system, the navigation data being indicative of movement of the portable measurement system over time; (c) process the navigation data and the image data to determine an assessed location of the portable measurement system at a second time in which the portable measurement system is hidden from the external camera; and (d) generate an estimated orientation image on which the assessed location is indicated, based on an image captured by the external camera; a synchronization module, operable to associate to the estimated orientation image a physiological measurement acquired by the portable measurement system at the second time; and a communication module operable to transmit to a remote system: (a) a physiological measurement record based on the physiological measurement acquired at the second time, (b) the estimated orientation image, and (c) association data associating the estimated orientation image and the physiological measurement record.