Abstract: Optical sources having multiple optical emitters are described, which may be used in a sensor array used to detect optical properties of a subject, including hemoglobin and deoxygenated hemoglobin concentrations. Multiple optical emitters can be positioned within an optical source. The optical source may include a diffuser and one or more optics, which may direct light from the multiple optical emitters along substantially the same optical direction to the diffuser. The diffuser may receive light from the one or more optics and transmit light from the optical source where the transmitted light has a greater angular distribution than light emitted by one of the optical emitters.

Abstract: Methods, apparatus, and systems for intravascular analysis combine at least three analytical modalities. In one implementation, intravascular ultrasound, optical coherence tomography, and near infrared spectroscopy are combined to enable detection of multiple, different abnormalities in the arterial morphology during a single intravascular procedure.

Abstract: Methods, apparatus, and systems for intravascular analysis combine at least three analytical modalities. In one implementation, intravascular ultrasound, optical coherence tomography, and near infrared spectroscopy are combined to enable detection of multiple, different abnormalities in the arterial morphology during a single intravascular procedure.

Abstract: Methods, apparatus, and systems for intravascular analysis combine at least three analytical modalities. In one implementation, intravascular ultrasound, optical coherence tomography, and near infrared spectroscopy are combined to enable detection of multiple, different abnormalities in the arterial morphology during a single intravascular procedure.

Abstract: An apparatus for detecting vulnerable plaque in a blood vessel includes an intravascular probe, and a slip ring at a proximal end of the probe. The slip ring has a stationary portion and a spinning portion. An ultrasound transceiver board is mechanically coupled to the slip ring's spinning portion for communication with an ultrasound transducer, also within the probe. A transmission line extends between the ultrasound transducer and the ultrasound transceiver board.

Abstract: A local protractive message on hold device, which contacts and interacts with a server, in order to receive from the server the audio programming and to install and alter the audio programming on the message on hold device. The device may interact with said server by any sort of electronic communication medium capable of transmitting digitized information as binary code or as binary code embedded in a text format based on ASCII. The local protractive device identifies itself to the server, then either the local device or the server checks specific areas within the storage system of the server to see if there are programming changes available for the local device. If there are no changes available in the storage system of the server; local device terminates its link to said server and then resumes normal operation.