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| | Occlusion |
 | | In fact, occlusion is one of the most important factors in dentistry because the success or failure of practically everything a dentist does in a patient's mouth depends upon its ability to operate within the boundaries of the patient's physiologic occlusion. | | | The brain is important in the concept of occlusion because it is the source of both the voluntary muscular activity which operates the system, as well as unconscious habits such as bruxing (grinding and clenching) which can lead to some of the most serious disease states of occlusion. | | | A patient's centric occlusion may be physiologic, meaning that the joint is placed into a comfortable position, or pathologic, meaning that the joint is forced into an eccentric position which may produce organic joint dysfunction. |
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http://www.doctorspiller.com/occlusion.htm
(5579 words)
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| | Punctal and intra-canalicular occlusion - a guide for the practitioner |
| | Beetham (1935) introduced surgical occlusion of the punctum using electrocautery as a therapy for aqueous tear deficiency. | | | The primary eye care practitioner- the optometrist - has an important role to play in the management of patients with dry eye, and as such may find the use of punctum and intra-canalicular plugs of benefit to some patients. | | | There have been a number of studies to examine the effects of occlusion. |
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http://www.academy.org.uk/tutorials/pplugs.htm
(3301 words)
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| | Retinal artery occlusion |
| | Occlusion of its branches causes loss of vision in only a portion of the field of vision. | | | Eyeball massage may also be performed, also in an effort to remove the occlusion. | | | If occlusion occurs in a branch artery, vision loss will be partial and may even go unnoticed if only a section of the peripheral vision is affected. |
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http://www.lifesteps.com/gm/Atoz/ency/retinal_artery_occlusion.jsp
(891 words)
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| | MedlinePlus Medical Encyclopedia: Retinal vessel occlusion |
| | This treatment may allow the clot to move further down the vessel, thereby reducing the area of the retina that is affected. | | | The degree of loss is, in part, related to the location of the occlusion. | | | Treatment for retinal vein occlusions can include aspirin and laser therapy. |
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http://www.nlm.nih.gov/medlineplus/ency/article/001028.htm
(554 words)
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| | Handbook of Ocular Disease Management - RETINAL ARTERY OCCLUSION |
| | Most practitioners would attempt these measures if the occlusion were less than 24 hours old. | | | The patient, usually between the ages of 50 and 80, will present with a sudden, painless, unilateral loss of vision and/or visual field. | | | Common methods employed included breathing into a paper bag to increase blood carbon dioxide levels and induce vasodilation, digital globe massage, paracentesis, and carbonic anhydrase inhibitors to reduce intraocular pressure and decrease vascular resistance to flow. |
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http://www.revoptom.com/handbook/sect5g.htm
(597 words)
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| | Retinal vein occlusion |
| | RVO may be categorized by the anatomy of the occluded vein and the degree of ischemia produced. | | | Recent reports published in 1999 suggest that use of a laser to create a retinal choroidal hole may be useful to treat CRVO. | | | The management of laser therapy should be controlled by an ophthalmologist. |
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http://www.healthatoz.com/healthatoz/Atoz/ency/retinal_vein_occlusion.jsp
(878 words)
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| | Collateral flow reserve and right coronary occlusion: evaluation during off-pump revascularization -- Verhoye et al. 4 ... |
| | Pharmacological modulation of the human collateral vascular resistance in acute and chronic coronary occlusion assessed by intracoronary blood flow velocity analysis in an angioplasty model. | | | Angiographic assessment of collateral connections in comparison with invasively determined collateral function in chronic coronary occlusions. | | | Changes in collateral channel filling immediately after controlled coronary artery occlusion by an angioplasty balloon in human subjects. |
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http://icvts.ctsnetjournals.org/cgi/content/full/4/1/23
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| | The modern approach to patent ductus arteriosus treatment: complementary roles of video-assisted thoracoscopic surgery ... |
| | The modern approach to patent ductus arteriosus treatment: complementary roles of video-assisted thoracoscopic surgery and interventional cardiology coil occlusion -- Jacobs et al. | | | The modern approach to patent ductus arteriosus treatment: complementary roles of video-assisted thoracoscopic surgery and interventional cardiology coil occlusion | | | CONCLUSIONS: Video-assisted thoracoscopic surgery and coil occlusion represent |
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http://ats.ctsnetjournals.org/cgi/content/abstract/76/5/1421
(353 words)
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| | Hard of Hearing Concerns - Digital Hearing Aids - Occlusion |
| | My observation - there can be no obstruction to these two critical areas of the shell portion of the hearing aid (air vent and/or sound channel-receiver) or "occlusion" will occur - at least in my case. | | | There has been a great deal posted to this forum on this subject; I thought I might add my own experiences dealing with this subject. | | | You could also use this same "what if" for the end of the air vent. |
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http://www.hohadvocates.org/wwwboard/view.php?site=hohadvocates&bn=hohadvocates_hohconcerns&key=1104466071
(962 words)
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| | Reduction in Ventilator Response to CO2 With Relaxation Feedback During CO2 Rebreathing in Normal Adults -- Holliday ... |
| | of occlusion pressure as a function of time. | | | Reed, DJ, Kellogg, RH (1958) Changes in response to CO2 during natural sleep and at altitude. | | | Sautegeau, A, Hannhart, B, Peslin, R, et al (1986) Comparison between ventilatory and mouth occlusion pressure responses to hypoxia and hypercapnia in healthy sleeping man. Clin Physiol 6,589-601 |
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http://www.chestjournal.org/cgi/content/full/115/5/1285
(3117 words)
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| | OCCLUSION |
| | Lateral excursion is the movement of the mandible from centric occlusion or centric relation to the right or left until the cuspids are in a cusp to cusp relationship. | | | The molar relationship is such that the mandibular permanent molar is situated mesially to the maxillary first molar. | | | Protrusive excursion is the forward movement of the mandible from centric occlusion until the anterior teeth are edge to edge.Ideally there should be no contact between posterior teeth. |
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http://www.gpc.edu/~jweir/1902/occlusion.htm
(603 words)
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| | Depth Map based Ambient Occlusion |
| | This technique needs some playing with to properly understand the concepts involved but I believe it can efficiently get you creating photoreal images quickly without lots of time spent tweaking and fiddling fill lights. | | | I haven't used the techniques on this page for a while now and I see no reason I would again. | | | In order to do this it utilises a function of the MTOR lights in RAT called "__inShadow". |
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http://www.andrew-whitehurst.net/amb_occlude.html
(1633 words)
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| | Retinal vein occlusion |
| | Following a vein occlusion, the primary concern is to treat the secondary complications. | | | St. Luke's Cataract and Laser Institute provides this on-line information for educational and communication purposes only and it should not be construed as personal medical advice. | | | Fluorescein angiography may be performed in some cases to study the circulation of the retina and to determine the extent of macular edema or swelling. |
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http://www.stlukeseye.com/Conditions/VeinOcclusion.asp
(320 words)
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| | MedlinePlus Medical Encyclopedia: Acute arterial occlusion - kidney |
| | Flank pain or pain in the side, not colicky or spasmodic | | | Calling your health care provider Return to top | | | The risk of emboli increases if there is a history of certain heart disorders such as mitral stenosis or atrial fibrillation. |
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http://www.nlm.nih.gov/medlineplus/ency/article/001272.htm
(717 words)
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| | occlusion culling revisited - GameDev.Net Discussion Forums |
| | Posted - 2/12/2003 3:30:48 PM I believe the extension has a number of stages; first you draw something that has been flagged as an occluder, say an inscribed bounding box (e.g. | | | Can someone tell me how it works internally? | | | The extension works in a very simple way: occlusion is defined as not being visible, ie. |
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http://www.gamedev.net/community/forums/topic.asp?topic_id=139310
(1138 words)
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| | Dr. Koop - Retinal Vein Occlusion- Health Encyclopedia and Reference |
| | You should promptly seek professional medical care if you have any concern about your health, and you should always consult your physician before starting a fitness regimen. | | | While the initial clinical problems caused by retinal vein occlusion are related to macular changes, other problems may develop. | | | To prevent neovascularization, retinal photocoagulation (coagulation with laser treatment) is sometimes performed in patients with central retinal vein occlusion and extensive areas of capillary non-perfusion on fluorescein angiography. |
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http://www.drkoop.com/encyclopedia/43/265.html
(708 words)
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| | Ambient Occlusion |
| | Ambient occlusion is a lighting technique used to give models a global illumination-like effect, as if it were lit from the entire hemisphere (rather than a point light). | | | There are two basic approaches for computing ambient occlusion. | | | Since this requires computing occlusion at every triangle, this approach is in general O(N^2), although with efficiency structures (such as bounding volume hierarchies) it can be reduced to O(NlogN). |
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http://www.cs.unc.edu/~coombe/research/ao
(555 words)
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| | [No title] |
| | The spec would make sense the other way, but the behavior would be strange. | | | The application begins an occlusion test and ends it; then, at some later point, it asks for the result, at which point the driver must stop and wait until the result from the previous test is back before the application can even begin the next one. | | | As a result, they can overlap the time it takes for the occlusion query results to be returned with other, more useful work, such as rendering other parts of the scene or performing other computations on the CPU. |
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http://oss.sgi.com/projects/ogl-sample/registry/NV/occlusion_query.txt
(3423 words)
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| | Occlusion Culling with Hierarchical Occlusion Maps |
| | These two necessary conditions are verified by the overlap tests and the depth tests, respectively. | | | Testing of the system on a variety of models (from 300,000 to 15 Million polygons) has demonstrated the effectiveness of our algorithms for the interactive display of arbitrary models. | | | Effective Occlusion Culling for the Interactive Display of Arbitrary Models |
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http://www.cs.unc.edu/~zhangh/hom.html
(344 words)
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| | Gamasutra - Features - "Occlusion Culling Algorithms" [11.09.99] |
| | Our conclusion: speed-up techniques and acceleration schemes will always be needed. | | | After that all objects (which passed the view-frustum culling test) are processed. | | | Depending on the particular algorithm, OR represents some kind of occlusion information. |
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http://www.gamasutra.com/features/19991109/moller_haines_01.htm
(899 words)
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| | CGTalk - Reflective Occlusion? |
| | First I thought I am getting somewhere but then I found out what may be the problem. | | | What would be so cool with the occlusion is the possibility to ignore some of the objects in the scene. | | | Can I use dirtmap for it or I need some other version for occlusion shader where something like this is implemented? |
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http://forums.cgsociety.org/showthread.php?p=2754852#post2754852
(767 words)
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| | Renal artery occlusion |
| | Occlusions may be treated with anticoagulant (blood thinning) or thrombolytic (clot destroying) drugs. | | | Renal arterial occlusion is a serious and potentially life-threatening condition, and should always be treated by a healthcare professional familiar with the disorder. | | | The outcome of renal arterial occlusion depends on the speed with which it is treated. |
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http://www.healthatoz.com/healthatoz/Atoz/ency/renal_artery_occlusion.jsp
(696 words)
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| | Occlusion - Wikipedia, the free encyclopedia |
| | In medicine, the term is often used to refer to blood vessels, arteries or veins which have become totally blocked to any blood flow. | | | In computer graphics and image processing, occlusion is the effect of one object in 3-D space blocking another object from view. | | | For issues of artery occlusion, see stenosis, atheroma, and coronary catheterization. |
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http://en.wikipedia.org/wiki/Occlusion
(127 words)
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| | Retinal Vein Occlusion |
| | by Nauman A. Chaudhry, M.D. Branch retinal vein occlusion is a condition in which part of the venous drainage system of the retina is blocked. | | | An increased risk for development of branch retinal vein occlusion is demonstrated in individuals with a history of systemic hypertension, history of stroke or coronary artery disease, history of smoking, and history of glaucoma. | | | Branch retinal vein occlusion can affect the vision in a number of ways. |
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http://www.retinamd.com/disorders/branch.htm
(479 words)
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| | Retinal artery occlusion |
| | Artery occlusion is diagnosed by examining the retina with an ophthalmoscope. | | | Unfortunately, there is no treatment that can consistently restore vision lost from an artery occlusion. | | | The occlusion decreases the oxygen supply to the area of the retina nourished by the affected artery, causing permanent vision loss. |
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http://www.stlukeseye.com/Conditions/ArteryOcclusion.asp
(287 words)
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| | Everflow Tutorials: Max 7: Ambient Occlusion |
| | This occlusion is also known as the 'dirtpass' or 'dirtmap'. | | | I will not go into the details of the science behind the magic, simply put; ambient occlusion fires rays into the scene at various angles from various points on the geometry, and determines which rays are blocked by other geometry, and creates a visual representation of the occlusion. | | | Assign the shader to all your scene objects. |
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http://everflow.com/support/tutorials/AO/Everflow_AmbientOcclusion1.html
(543 words)
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| | Untitled Document |
| | This problem can still be solved by the ambient occlusion approach. | | | In the areas that are self-occluded or blocked by other objects in the scene, objects can't reflect environment. | | | 3.The function has a string box "occpass" in which you can load the image containing the occlusion information. |
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http://zj.deathfall.com/reflocc.htm
(267 words)
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| | Ambient Occlusion |
| | This can then be multiplied by various other surface attributes to achieve a subtle, but very powerful, lighting effect. | | | Fancy name aside, ambient occlusion is simply a ratio of how much ambient light a surface point would be likely to receive. | | | Simple, but highly effective, ambient occlusion's been used for years at studios like BlueSky and ILM to achieve grounded realism, without the cost of full global illumination. |
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http://www-viz.tamu.edu/students/bmoyer/617/ambocc
(845 words)
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| | [No title] |
| | As a side effect of reading the occlusion result the internal result state is cleared, setting it up for a new bounding box test. | | | Occlusion culling allows an application to render some geometry and at the completion of the rendering to determine if any of the geometry could or did modify the depth buffer, ie. | | | The idea being that if the application renders a bounding box of some geometry in this mode and the occlusion test failed (ie. |
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http://oss.sgi.com/projects/ogl-sample/registry/HP/occlusion_test.txt
(445 words)
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| | Occlusion definition - Medical Dictionary definitions of popular medical terms |
| | Occlusion definition - Medical Dictionary definitions of popular medical terms | | | Peripheral Vascular Disease - Peripheral vascular disease (PVD) refers to diseases of the blood vessels (arteries and veins) located outside the heart and brain. | | | MedicineNet Home > MedTerms medical dictionary A-Z List > Occlusion |
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http://www.medterms.com/script/main/art.asp?articlekey=24885
(182 words)
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| | nV News - NVIDIA GeForce3 Preview - Occlusion Culling |
| | The author of the program, who posted under the name of Humus, developed GL_EXT_reme, which includes a series of tests to measures the effectiveness of occlusion culling on a graphics card. | | | As discussed in the section on Lightspeed Memory Architecture, occlusion culling is a feature of the GeForce3, which is used to reduce the amount of memory and processing required by a 3D graphics application. | | | This type of occlusion detection algorithm relies on the techniques found in Binary Space Partitioning. |
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http://www.nvnews.net/previews/geforce3/occlusion_culling.shtml
(955 words)
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| | Gamasutra - Features - "Occlusion Culling Algorithms" [11.09.99] |
| | This can save much of the work in scenes that are densely occluded. | | | Examples of these data structures are shown in Figure 3. | | | This algorithm maintains the scene model in an octree, and a frame's Z-buffer as an image pyramid, which we call a Z-pyramid. |
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http://www.gamasutra.com/features/19991109/moller_haines_02.htm
(1735 words)
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| | Encyclopedia Search - Medical Dictionary Search Engines |
| | Acute respiratory distress syndrome see ARDS (acute respiratory distress syndrome) | | | Acute nonlymphocytic leukemia (ANLL) see Acute myelogenous leukemia (AML) - adult | | | Acute renal artery occlusion see Acute arterial occlusion - kidney |
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http://medical-dictionary-search-engines.com/encyclopedia/?encyclopedia_name...
(474 words)
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| | LaserMyEye :: Encyclopedia :: Punctal occlusion |
| | Punctal occlusion is used in aqueous deficient dry eye patients. | | | Please include a link to this page for reference. | | | Punctal occlusion refers to both punctal plugs (plugs to temporarily block the drains) and punctal cautery (permanently sealing the drains shut). |
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http://www.lasermyeye.org/encyclopedia/punctalocclusion.html
(86 words)
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| | Depth-based Ambient Occlusion |
| | Wait a monent, we get the black-and-white occlusion data representing how much ambient light hits on specific surface point. | | | If you haven't any idea of what shader, map, NDC, RIB or ambient occlusion is, please try some more basic tutorials first. | | | I modify his shaders a bit and give a guide to use them. |
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http://zj.deathfall.com/depthbasedOcc.htm
(1004 words)
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