摘要:
The exemplary embodiments of the present invention provides exemplary methods for adhering biological membranes to luminal anatomical structures using photosensitizing agents and electromagnetic energy. The exemplary embodiments of the present invention also provides method for stabilizing luminal anatomical structures. Further, exemplary embodiments of the present invention provide arrangements for coupling to a luminal anatomical structure.
摘要:
Apparatus and method for increasing the sensitivity in the detection of optical coherence tomography and low coherence interferometry (“LCI”) signals by detecting a parallel set of spectral bands, each band being a unique combination of optical frequencies. The LCI broad bandwidth source is split into N spectral bands. The N spectral bands are individually detected and processed to provide an increase in the signal-to-noise ratio by a factor of N. Each spectral band is detected by a separate photo detector and amplified. For each spectral band the signal is band pass filtered around the signal band by analog electronics and digitized, or, alternatively, the signal may be digitized and band pass filtered in software. As a consequence, the shot noise contribution to the signal is reduced by a factor equal to the number of spectral bands. The signal remains the same. The reduction of the shot noise increases the dynamic range and sensitivity of the system.
摘要:
Arrangements, apparatus, systems and systems are provided for obtaining data for at least one portion within at least one luminal or hollow sample. The arrangement, system or apparatus can be (insertable via at least one of a mouth or a nose of a patient. For example, a first optical arrangement can be configured to transceive at least one electromagnetic (e.g., visible) radiation to and from the portion. A second arrangement may be provided at least partially enclosing the first arrangement. Further, a third arrangement can be configured to be actuated so as to position the first arrangement at a predetermined location within the luminal or hollow sample. The first arrangement may be configured to compensate for at least one aberration (e.g., astigmatism) caused by the second arrangement and/or the third arrangement. The second arrangement can include at least one portion which enables a guiding arrangement to be inserted there through. Another arrangement can be provided which is configured to measure a pressure within the at least one portion. The data may include a position and/or an orientation of the first arrangement with respect to the luminal or hollow sample.
摘要:
According one exemplary embodiment of the present invention, method and system can be provided for applying a laser radiation to at least one portion of a biological structure. For example, a beam of the laser radiation can be provided to the portion, whereas a cross-sectional area of the beam is at most about 1/10th of an entire area of the at least one portion. The beam can be applied to the portion (a) based on a predetermined pattern, (b) while modulating a wavelength of the laser radiation, and/or (c) while monitoring a depth of the application of the laser radiation.
摘要:
An apparatus for controlling at least one of at least two sections of at least one fiber can be provided. The apparatus can include an arrangement which may be provided between the first and second sections of a particular continuous fiber of the fibers. A particular one of the first and second sections may be provided in a particular orientation that is perpendicular to an extension of the particular fiber. The arrangement is capable of controlling the particular fiber such that the particular one of the sections is capable of being rotated for at least 360° with respect to the particular orientation. The arrangement can include a further arrangement that is capable of at least partially wrapping the particular fiber around the second arrangement, and controlling the particular fiber such that the particular one of the sections is capable of being rotated with respect to the particular orientation during a transmission of the electro-magnetic radiation.
摘要:
Method, apparatus and arrangement according an exemplary embodiment of the present invention can be provided for obtaining information associated with a sample such as a portion of an anatomical structure. The information can be generated using first data, which can be based on a signal obtained from a location on the sample, and second data, where the second data can be obtained by combining a second signal received from the sample with a third reference signal. An image of a portion of the sample can also be generated based on the information. For example, the first data can be associated with spectral encoding microscopy data, and the second data can be associated with optical coherence tomography data.
摘要:
An apparatus for applying a plurality of electromagnetic radiations to a sample is provided. In one exemplary embodiment, the apparatus can include an arrangement which has a specific portion with a plurality of channels. One of channels can facilitate a first radiation of the radiations to be forwarded to the sample that is within an anatomical structure, and another one of the channels can facilitate a second radiation of the radiations to be forwarded to the sample. The first radiation may have a first wavelength band, and the second radiation may have a second wavelength band. The first wavelength band may be substantially different from the second wavelength band. According to another exemplary embodiment, the first radiation can be adapted to be delivered to a first area of the sample, and the second radiation may be capable of being delivered to a second area of the sample. The first area may be substantially enclosed by the second area. According to yet another exemplary embodiment of the present invention, each of the channels can facilitate at least one particular radiation of the radiations to be forwarded to the sample that is within an anatomical structure of the sample, the radiations being delivered to different areas of the sample. Centers of every one of the areas may be provided substantially along a line.
摘要:
Systems, arrangements and methods for obtaining three-dimensional imaging data are provided. For example, a broadband light source can provide a particular radiation. A first electro-magnetic radiation can be focused and diffracted, and then provided to at least one sample to generate a spectrally-encoded line. A second electro-magnetic radiation may be provided to a reference, which may include a double-pass rapidly-scanning optical delay, where the first and second electro-magnetic radiations can be based on the particular radiation. An interference between a third electro-magnetic radiation (associated with the first electro-magnetic radiation) and a fourth electro-magnetic radiation (associated with the second electro-magnetic radiation) can be detected. The spectrally-encoded line may be scanned over the sample in a direction approximately perpendicular to the line. Image data containing three-dimensional information can then be obtained based on the interference. The exemplary imaging methods and systems can be used in a small fiber optic or endoscopic probe.
摘要:
A confocal microscope lens arrangement is provided. The confocal microscope lens arrangement includes a lens assembly housing which has a lens assembly, and an exterior housing including a distal end and a proximal end. The exterior housing is configured to allow the lens assembly housing to be placed therein, and translated between the proximal end and the distal end of the exterior housing to focus the lens assembly. The exterior housing has an aperture formed through a distal end thereof. The arrangement also includes an immersion media filling the volume of area between the exterior housing and the lens assembly housing.
摘要:
An apparatus and method are provided. In particular, at least one first electro-magnetic radiation may be provided to a sample and at least one second electro-magnetic radiation can be provided to a non-reflective reference. A frequency of the first and/or second radiations varies over time. An interference is detected between at least one third radiation associated with the first radiation and at least one fourth radiation associated with the second radiation. Alternatively, the first electro-magnetic radiation and/or second electro-magnetic radiation have a spectrum which changes over time. The spectrum may contain multiple frequencies at a particular time. In addition, it is possible to detect the interference signal between the third radiation and the fourth radiation in a first polarization state. Further, it may be preferable to detect a further interference signal between the third and fourth radiations in a second polarization state which is different from the first polarization state. The first and/or second electro-magnetic radiations may have a spectrum whose mean frequency changes substantially continuously over time at a tuning speed that is greater than 100 Tera Hertz per millisecond.