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Home > Electron Microscopes News > Identification and Imaging of the Nerves Responsible for Erectile Function in Rat Prostate, In Vivo, Using Optical Nerve Stimulation and Optical Coherence Tomography

Identification and Imaging of the Nerves Responsible for Erectile Function in Rat Prostate, In Vivo, Using Optical Nerve Stimulation and Optical Coherence Tomography




The cavernous nerves on the prostate surface are responsible for erectile function. Optical diagnostic tools such as optical coherence tomography and laser nerve stimulation may assist in the identification, imaging, and preservation of these microscopic nerves during prostate cancer surgery, and thus, help preserve sexual function after surgery. The feasibility of noncontact laser stimulation of the cavernous nerves is demonstrated in an in vivo rat prostate model with comparison to conventional electrical nerve stimulation. High-resolution optical coherence tomographic images of the nerves are also obtained and compared with histology. These optical technologies may be suitable as surgical guidance tools during laparoscopic and robotic nerve-sparing prostate cancer surgery.


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Caltech 4-D microscope revolutionizes the way we look at the nano ... - innovations report

Caltech 4-D microscope revolutionizes the way we look at the nano ...
innovations report, Germany - Nov 24, 2008
The new technique, dubbed four-dimensional (4D) electron microscopy, was developed in the Physical Biology Center for Ultrafast Science and Technology, ...
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Modeling of Lanthanum Strontium Manganite Ferromagnetic Thin Film Material Tunable Resistance
The knowledge of the electroactive and magnetoactive properties of the lanthanum strontium manganite (LSMO) ferromagnetic thin film materials is essential for modeling and design of their devices. The activity of these materials can be described by their electro- and magnetoresistances. Under electrostatic bias field, it is assumed that induced electric current will modify the electrical behavior of the electrode–manganite interface, resulting in the decrease of film resistance. This letter takes a close look at modeling the change of LSMO resistance with working frequency and applied bias.
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Back to mediocrity

The Olympics are over, and everyone is tired, including me. But what a show, and so colorful! Those Chinese sure like red stuff. I've been drawing athletes in action for the last two weeks trying to capture in my imagination the grace and power and agility I saw on the screen. This Weblog is old enough that longtime readers can recall my effusions about the 2004 Olympics, from the August 2004 archive. I felt much more hopeful then than now that I would ever learn anything mathematical and physics-oriented. Currently I am so busy with other work (at the day job, mostly) that I barely get to contemplate a calculus limit, let alone solve limit problems.

I still am a sucker for excellence. I value excellence, or competence, or achievement, more than anything else in the world. I honor it wherever I see it. I watched the TV and Internet coverage knowing that I was being shamelessly manipulated emotionally and mentally, but I didn't care. I was seeing excellence, or at least striving for excellence, even if the girl fell off the beam or the fencer got struck down or the runner lost at the last few meters. At least they tried.

Later in 2004, I forgot all about the Olympics when the Boston Red Sox won their first World Series in 86 years. I thought that was excellent, too. What about art excellence? I constantly visit the sites of commercial artists who work for games and movies and illustrations. There's a lot of this art and I find it thrilling. It's colorful, too, like the Chinese Olympics with their costumes and fireworks. I am a spectator, not a participant. I'm a consumer, not a producer. By the time I get around to having the opportunity to do something myself, it is already 4 in the morning and I should not be up at this hour at all.

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Mechanisms of cardiovascular disease and cancer give clues to new therapies
Cardiovascular conditions leading to heart attacks and strokes are treated quite separately from common cancers of the prostate, breast or lung, but now turn out to involve some of the same critical mechanisms at the molecular level. (2008-11-24)
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High-resolution electron microscopy of multi-wall carbon nanotubes in the subcutaneous tissue of rats

The atomic structure of multi-wall carbon nanotubes (MWCNTs) implanted in the subcutaneous tissue of rats was examined by means of high-resolution transmission electron microscopy (HRTEM). Clusters of the MWCNTs implanted in the subcutaneous tissue were well recognized by the TEM observations. It was indicated that some nanotubes were taken in phagocytes after the 1-year implantation. The deterioration of crystalline structure of the nanotubes in phagocytes was shown by the HRTEM observation. It was suggested that the deterioration of the nanotubes was due to the peeling of the outer graphene layers in the phagocytes.

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