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Topic: Radiolucent

In the News (Sun 29 Nov 09)

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	Diagnosing a Radiolucent Lesion in the Posterior Mandible
		Diagnosing a Radiolucent Lesion in the Posterior Mandible
		Claudia Hoffman, D.D.S. Diagnosing a Radiolucent Lesion in the Posterior Mandible
		The differential diagnosis for this radiolucent lesion in the posterior mandible is:
	www.endomail.com /articles/ch03radiolucentlesion.html (615 words)

	OMFP: ORPT 621, Dental Radiology - VCU School of Dentistry
		The width of the PDL varies from tooth to tooth, although it is typically thinner in the middle of the root and wider near the alveolar crest and root apex.
		Between the inferior medial border of the orbit and the turbinates is the radiolucent ethmoid sinus.
		The radiolucent frontal sinus is visualized between the upper inner area of the orbits and may vary greatly in size and shape.
	www.dentistry.vcu.edu /departments/opath/radanatmod/normanattxt.html (2765 words)

	Patent 4923187: Radiolucent iliac crest support frame
		A radiolucent iliac crest support frame for supporting the iliac crest of a person and maintaining the person's spine in a substantially straight horizontal position is disclosed.
		The supporting means preferably are two oblong radiolucent pillows adjustably attached to the sheet by means of fastener pads and strips whereby the position of the pillows can be adjusted to accommodate patients of different sizes.
		In using the radiolucent support apparatus of the invention for back x-rays or back surgery, the patient is positioned so that the iliac crest (upper edge of the pelvis) of the patient rests on the apex 14 of the pillows.
	www.freepatentsonline.com /4923187.html (1975 words)

	Radiolucent aiming guide - US Patent 6656189 (Site not responding. Last check: 2007-11-05)
		The radiolucent handle is used in conjunction with a protection sleeve, trocar, drill sleeve, and drill bit, which are used to locate and drill through the hole in the nail.
		The radiolucent aiming guide of claim 1, wherein said pins are positioned equidistantly from said longitudinal axis of said handle and the distance between said pair of pins is approximately equal to the width of said intramedullary nail.
		The radiolucent aiming guide of claim 8, wherein said first pair of pins are positioned equidistantly from said longitudinal axis of said handle and the distance between said pair of pins is approximately equal to the width of said intramedullary nail.
	www.patentstorm.us /patents/6656189.html (5579 words)

	ULTRASONOGRAPHY DETECTION OF RADIOLUCENT FOREIGN BODIES IN SOFT TISSUE COMPARED TO COMPUTED TOMOGRAPHY ... (Site not responding. Last check: 2007-11-05)
		Thirty-one patients with suspected radiolucent foreign bodies (wooden splinters) in soft tissues of extremities were investigated by plain radiography, computed tomography (CT) scan and ultrasonography to the area suspected clinically.
		Ultrasonography detected and localized radiolucent foreign bodies in 18 of the 31 patients, while only 14 were seen on CT scan.
		Following surgical exploration, the presence of foreign bodies was confirmed in 20 patients; thus, the accuracy of ultrasonography was 90% while that of CT scan was 70%.
	www.kfshrc.edu.sa /annals/152/94062ab.html (153 words)

	University of Miami School of Medicine - Glossary - Radiolucent
		Radiolucent is as opposed to radiopaque (which refers to anything that blocks the penetration of X-rays).
		If a child swallows a radiolucent plastic paperclip, that paperclip will not be visible on X-ray so it may not be possible to tell whether it is in the stomach or down in the intestines (where it represents no problem) or lodged in the airway to the lungs (where it can be a big problem).
		For instance, in an intravenous pyelogram (an IVP), a radiopaque dye is injected into the bloodstream and passes into the urine, outlining the otherwise radiolucent renal pelvis and ureters -- the renal pelvis where the urine is collected and the ureters that serve as conduits for the urine from the kidneys to the bladder.
	www.med.miami.edu /glossary/art.asp?articlekey=12058 (172 words)

	The histology of the radiolucent line - Wheeless' Textbook of Orthopaedics (Site not responding. Last check: 2007-11-05)
		The radiographic and histological features of radiolucent areas at the cement-bone interface were correlated in 15 specimens retrieved at post-mortem from patients who had undergone cemented total hip arthroplasty, two weeks to 15 years prior to death.
		In two specimens the appearance of radiolucency was found to be due to fibrous tissue at the cement-bone interface and in one specimen there was a mixed picture of osteolysis and fibrosis.
		The study demonstrates that radiolucent lines can occur with well-fixed components and that they may commonly represent osteoporosis rather than the presence of a fibrous membrane at the cement-bone interface.
	www.wheelessonline.com /ortho/the_histology_of_the_radiolucent_line (192 words)

	Patent 5366497: Non-invasive, radiolucent cardiac electrode
		As a result, there has been a long-standing but heretofore unmet need for a non-invasive electrode which is radiolucent, and, at the same time, is capable of delivering multiple electrical therapies to a patient, including defibrillation therapies, in the course of an emergency cardiac resuscitation attempt.
		Accordingly, it is an object of the present invention to provide a radiolucent non-invasive cardiac electrode which is capable of delivering multiple electrical stimulation therapies, including defibrillation, to a patient in the course of an emergency cardiac resuscitation attempt.
		An object of the electrode is to be radiolucent and still be capable of delivering stimulating electrical impulses to the patient's heart, either pacing pulses or defibrillating pulses, substantially uniformly over the face of the electrode pad.
	www.freepatentsonline.com /5366497.html (4768 words)

	(MPB) Radiolucent Structural Materials for Medical Applications (MDDI archive, Jun 01)
		Plastics are inherently radiolucent; with mechanical properties generally inferior to those of metals, however, plastics normally cannot directly replace structural metal components.
		To meet new engineering challenges, medical manufacturers are turning toward radiolucent structural materials, which are transparent to x-rays and provide the necessary mechanical performance for the structural components used in surgical equipment and devices (Figure 1).
		The broadest definition of a radiolucent composite includes the entire family of plastics that contain a fiber reinforcement to increase structural properties yet still maintain transparency to x-rays.
	www.devicelink.com /mddi/archive/01/06/005.html (2321 words)

	Patent 4854305: Radiolucent transport and diagnostic procedure board
		More particularly, the board is compatible for use with radiolucent machines and procedures such that the patient may remain immobilized on the board during transport and while undergoing the diagnostic procedure.
		A flexible radiolucent compatible rope extends through the opening and is attached at its opposite ends to the bale and traction applying and indicator means, respectively.
		The traction applying and indicating means is formed integrally with the board adjacent its foot end and is disposed between its upper and lower surfaces, i.e., it is confined within the board such that the profile of the board remains smooth and undisturbed.
	www.freepatentsonline.com /4854305.html (3669 words)

	Radiolucent position locating device and drill guide (US6371959)
		Then a radiolucent plug is inserted into the guide sleeve, the plug having a radiographic pin centrally located along the plug's long axis.
		The radiolucent plug is removed and a drill is placed into the guide sleeve for drilling a hole into the bone.
		a pin and plug assembly comprising a radiographic pin encased in a radiolucent plug, the assembly being removably mounted in the cannula, wherein the pin appears as a centered point when proper alignment is determined.
	www.delphion.com /details?pn=US06371959__ (324 words)

	Navicular Bone - Osteolytic Changes (Site not responding. Last check: 2007-11-05)
		In contrast to the cone is the lollipop, which has a radiolucent circular appearance with a radiolucent tract (stem) extending to the distal border of the navicular bone.
		There is one exception to this rule: Either a cone-shaped or a lollipop-shaped radiolucent area located along the wing of the navicular bone should be considered a significant radiographic abnormality.
		In addition to the lollipop-shaped radiolucencies in the navicular bone, occasional large cystic lesions in the central portions of the navicular bone also are significant changes.
	cal.vet.upenn.edu /larad/article/article7/a7sec3.htm (476 words)

	eMedicine - Mandibular Cysts and Odontogenic Tumors : Article by Kim E Goldman, DMD (Site not responding. Last check: 2007-11-05)
		The usual radiographic appearance is that of a well-demarcated radiolucent lesion attached at an acute angle to the cervical area of an unerupted tooth.
		Radiographically, the lesion usually appears as an ovoid radiolucency located between the inferior alveolar canal and the inferior border of the mandible in the region of the second or third molars.
		A round opaque sunburst mass attached to the apex of a tooth that is well-demarcated and surrounded by a thin radiolucent rim is observed.
	www.emedicine.com /ent/topic681.htm (6972 words)

	Theses from Uppsala University : 1422 - Fixation of Spinal Implants
		The frequency of radiolucent zones surrounding the screws was higher for the uncoated screws than for the HA coated screws.
		Screws demonstrating radiolucent zones were compared to screws without zones with respect to pull-out resistance, extraction torque, bone-to-implant contact and amount of bone surrounding the screws.
		The frequency of radiolucent zones surrounding uncoated screws in the clinical study was 53%.
	publications.uu.se /theses/abstract.xsql?dbid=1422 (462 words)

	Friction transmission with axial loading and a radiolucent surgical needle driver - US Patent 6400979 (Site not responding. Last check: 2007-11-05)
		The method for performing radiological-image-guided percutaneous surgery according to claim 1, wherein the locking is carried out by the needle insertion mechanism and at least portions of the needle insertion mechanism comprise radiolucent material so as to permit x-rays to pass through the needle insertion mechanism and permit a substantially unobstructed fluoroscopic image.
		Additionally, the needle driver according to the invention, by virtue of providing a construction where the needle is held by its barrel and not by its head, allows a radiolucent construction and advantageously decreases the unsupported length of the needle for substantially preventing needle deflection under the insertion force.
		The disc-shaped construction of transmission housing 49 advantageously provides a large surface around needle 7 which presents a uniform thickness and density for exhibiting a uniform attenuation of the X-ray image such that views of the target and biological surfaces surrounding the same are not impeded during percutaneous surgery.
	www.patentstorm.us /patents/6400979.html (4763 words)

	[No title] (Site not responding. Last check: 2007-11-05)
		caries is a dimple (radiolucency) in the outer surface of the enamel.
		Radiolucent band is the intermediate band which may sometimes be mistaken for caries.
		Radiolucent healing = the amount of bone laid down in this area is less than the surrounding bone and may or may not be defined by the remnant of the lamina dura.
	dentin.net /resources/radiologyfinalnotes.html (8532 words)

	radio.html
		Clearly, development of a radiolucent prosthesis is critical to early detection of tissue changes in patients with augmented breasts.
		Saline-filled implants are relatively radiolucent However, they are subject to fold-flaw fractures and valve leakage, resulting in a high percentage of implant deflations.
		Predicted view of x-ray film when radiolucent material is in the bottle on the left, tissue equivalent is in the center bottle, and radiopaque material is in the bottle on the right.
	www.plasticsurgeryworld.com /published_papers/radio.html (1837 words)

	Journal of Bone and Joint Surgery: significance of radiolucent zones surrounding pedicle screws: DEFINITION OF SCREW ...
		A radiolucent zone is a good indicator of loosening of a pedicle screw.
		Our aim therefore was to define the relation between radiolucent zones and the purchase of the screws, expressed either as the extraction torque or the pull-out resistance.
		A wide radiolucent zone surrounding the screws was defined as > 1 mm, disregarding the length of the lucency.
	www.findarticles.com /p/articles/mi_qa3767/is_200404/ai_n9351935 (1411 words)

	Loosening
		Radiolucent zones less than 2 mm that are stable and not progressive after 6-12 months and clinically asymptomatic should not be considered a sign of loosening
		1-2 mm radiolucent zone cement-bone interface of superolateral aspect (Gruen zone 1) are frequently seen and not a sign of loosening.
		Radiolucent zones at cement-bone interface of the inferomedial aspect of the acetabular component (Gruen zone 3) are more ominous and usually represent loosening or potential loosening
	www.gentili.net /thr/loosenin.htm (380 words)

	Miscellaneous Conditions - Radiolucent Separation (Site not responding. Last check: 2007-11-05)
		Figure 48 demonstrates a radiolucent separation between the hoof wall and underlying structures.
		Because it is probably a temporary problem that could be eliminated with proper treatment, it might be advisable to postpone a definitive decision until the foot has improved.
		Anteroposterior radiograph of the foot demonstrating a radiolucent separation of the hoof wall consistent with a radiographic diagnosis of infection or abscess.
	cal.vet.upenn.edu /larad/article/articl11/a11sec1.htm (98 words)

	Root Canals (Site not responding. Last check: 2007-11-05)
		X-ray shows a radiolucent area at the end of the root, that is, a dark area at the end of the root.
		Not all radiolucent areas depict an abscess, because clenching trauma can cause a radiolucent area.
		A case in point: A patient went to a dentist who found radiolucent areas on 3 teeth.
	www.clenchingsyndrome.com /rootcanals.html (288 words)

	Radiolucent
		Almost complete transparent to X-rays or other forms of radiation; "radiolucent tissues".
		"Radiolucent" is generally used as an adjective (general or positive) -- approximately 100.00% of the time.
		"Radiolucent" is used about 10 times out of a sample of 100 million words spoken or written in English.
	www.websters-online-dictionary.org /definition/Radiolucent (367 words)

	PEEK Becoming an Alternative to Titanium in Spinal Fusion Cages - Orthopedics Technology Spotlight - Medcompare
		Polyether-etherketone (PEEK) is a hard radiolucent plastic that is used in conjunction with carbon fiber reinforcement or as pure PEEK.
		The BAK Vista implant is the only approved radiolucent stand-alone implant that provides clear and confident fusion assessment with the proven reliability of the BAK threaded cage design.
		These are interbody cages allowing radicular compression by restoring the height of the interve rtebral space and of the foramina, which in turn enhances osteogenesis.The CC cages are particularly indicated for major lumbar instabilities.
	www.medcompare.com /spotlight.asp?spotlightid=128 (1075 words)

	CHEST: Nd-YAG Laser Ignition of Silicone Endobronchial Stents - ) (Site not responding. Last check: 2007-11-05)
		The radiolucent and radiopaque Dumon silicone stent (Novatech; Aubagne, France) and the tracheal part of the Dynamic stent (Ruesch AG; Kernen, Germany) were tested.
		The aim of our study was to test the incendiary characteristics of silicone endobronchial stents in vitro under various conditions that were chosen to imitate the conditions occurring during bronchologic interventions.
		The stents used were the radiolucent and radiopaque Endoxane silicone stent (Dumon; Novatech; Aubagne, France), and the tracheal part of the Dynamic stent with reinforcing metal hoops (Ruesch AG; Kernen, Germany).
	www.findarticles.com /p/articles/mi_m0984/is_5_117/ai_62495039 (1110 words)

	Dentures may be radiolucent -- Firth et al. 20 (6): 562 -- Emergency Medicine Journal
		Dentures may be radiolucent -- Firth et al.
		The use of computed tomography in the detection of radiolucent denture based material in the chest.
		Inhalation of dental plates-A hazard of radiolucent materials.
	emj.bmjjournals.com /cgi/content/full/20/6/562 (768 words)

	SUPERTECH X-Ray: SURGICAL C-ARM TABLE
		The radiolucent extension provides capability for vascular, cardiac, and other general C-Arm applications.
		The narrow Fiberesin™ tabletop is cantilevered to accommodate portable or ceiling suspended C-Arms.
		Radiolucent areas are free of cross members, allowing full fluoroscopic visualization and unobstructed C-Arm positioning.
	www.supertechx-ray.com /a901.htm (763 words)

	Radiology,Fluoroscopy,Medical,Surgical Tables Equipment Oakworks
		They're perfect for use in operating rooms, fluoroscopy suites, surgical suites, pain management clinics and anywhere radiolucent imaging and accurate patient positioning are required.
		They can be used on surgical tables and being radiolucent, can be used with radiology equipment as well.
		radiology equipment includes tables for surgical, radiology, ultrasound and fluoroscopy suites as well as radiolucent prone patient positioning platforms for ideal viewing during spinal imaging procedures for both treatment and diagnostics.
	www.oakworksmed.com (348 words)

	Synthes: Jul 18, 2002 - Synthes-Stratec announces FDA clearance for radiolucent polymer (PEEK) and vertebral spacer ... (Site not responding. Last check: 2007-11-05)
		Because the Synthes Spacer implants are completely radiolucent, the clinician will be able to visually assess bony fusion in and around the implant.
		These devices will be housed in instrument sets that provide the flexibility of using allograft, titanium, or radiolucent implants based on physician preference.
		This is the only universal instrument set on the market with common instruments allowing the surgeon and hospital flexibility of choice and efficient inventory management.
	ch1web02.stratec.com /html/Jul_18_2002_Synth.4502.0.html (373 words)

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