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Topic: Coronary angiography

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	MedlinePlus Medical Encyclopedia: Coronary angiography
		Coronary angiography is a procedure in which a contrast material that can be seen using x-ray equipment is injected into one of the arteries of the heart.
		Coronary angiography is usually performed in conjunction with cardiac catheterization.
		Coronary angiography is performed to detect obstruction in the coronary arteries, which can lead to heart attack.
	www.nlm.nih.gov /medlineplus/ency/article/003876.htm (807 words)

	JANTA X-RAY CLINIC - CT Coronary Angiography (Site not responding. Last check: 2007-09-18)
		Coronary artery disease is the single largest cause of morbidity among all diseases.
		An analysis of the prevalence of coronary artery disease from the 1960’s to 1990’s revealed an approximate 9 fold increase of coronary heart disease in the urban population and a 2 fold increase in coronary heart disease in the rural population.
		CT Coronary angiography is an excellent investigation to assess the patency of stented vessels, postoperative grafts and to exclude noncardiac causes of chest pain.
	www.jantaxray.com /article.htm (1292 words)

	Guideline 32 Section 2: Coronary angiography (Site not responding. Last check: 2007-09-18)
		Coronary angiography is an invasive investigation which accurately and reproducibly assesses the anatomy of the coronary arteries
		Coronary angiography is used to aid the diagnosis and management of known or suspected coronary heart disease and is considered when either medical therapy has failed to provide effective symptomatic control, or non-invasive tests suggest that the patient may be at high risk and might therefore benefit prognostically from intervention.
		Coronary angiography is appropriate in patients in whom non-invasive tests have been inconclusive or negative, but who continue to have chest pain which is severe, frequent, or resulting in recurrent admission to hospital.
	www.sign.ac.uk /guidelines/fulltext/32/section2.html (1122 words)

	Medinfo: Coronary angiography
		Coronary angiography is an X-Ray procedure to show up the arteries that supply blood to the heart muscle (the coronary arteries).
		Coronary angiography is a procedure carried out by a specialist in the hospital.
		Coronary angiograms are usually undertaken in a hospital which has a cardiac surgery unit, in case any surgery becomes necessary during or shortly after the test.
	www.medinfo.co.uk /tests/corangio.html (689 words)

	Coronary Angiography: News Brief
		Angiography is a diagnostic study of the coronary arteries using a catheter, contrast dye, and X-ray imaging.
		"The relatively high costs of coronary angiography, its frequent use, the risks associated with performing the procedure, and the continued evolution of its indications are the reasons for the revision," said Dr. Scanlon.
		The guidelines address the committee's recommendations for coronary angiography in patients with known or suspected coronary artery disease; stable angina; nonspecific chest pain; unstable angina; recurrence of symptoms after revascularization; valvular heart disease; congenital heart disease; acute myocardial infarction; congestive heart failure; and other conditions, such as diseases effecting the aorta and hypertrophic cardiomyopathy.
	www.acc.org /clinical/guidelines/news/coronary.htm (432 words)

	CT Coronary Angiography Review
		The purpose of coronary angiography is to define coronary anatomy and the degree of luminal obstruction of the coronary arteries.
		Research on the cost-effectiveness of non-invasive coronary angiography is needed before the optimal use of this procedure in a wide range of clinical circumstances can be determined.
		Recent studies revealed that the ECG triggering at 80% of the R-R interval (late diastole) used in most prior studies might not be optimal for imaging of the coronary segments near the right or left atria, since atrial contraction during end-diastole causes rapid movement of the base of the heart.
	www.newportbodyscan.com /Downloads/CTAgioEBvMDCT.htm (5050 words)

	Coronary Angiography (Site not responding. Last check: 2007-09-18)
		coronary artery disease during the course of a physical examination.
		An infrequent complication of angiography is a reaction to the contrast medium injected.
		If you have symptoms of heart or coronary artery disease, your doctor will want to use every available method to find out precisely what the trouble is. The techniques of cardiac catheterization and coronary angiography can give exact information that will help your doctor to make a more accurate diagnosis of your condition.
	www.fciheart.com /coronary_angio.htm (1856 words)

	Radiology Rounds - August 2004 - Coronary CTA
		CT-based coronary angiography is a new, non-invasive alternative for some patients, made possible by the development of high-speed multi-detector CT (MDCT) scanners.
		Clinical studies have shown that coronary CTA is reliable for the non-invasive assessment of stenoses in the proximal and mid regions of the coronary arteries, where the majority of stenoses are found.
		First, coronary CTA can image blood vessel walls and the anatomy of the heart and can, therefore, be used to assess the pericardium, cardiac chamber size and shape, and to detect ventricular aneurysms.
	massgeneralimaging.org /newsletter/august_2004 (1060 words)

	Coronary angiography and other heart catheterization procedures - MayoClinic.com
		Coronary angiography is a procedure that uses X-ray imaging to exam the inside of your heart's blood vessels.
		Angiography is one of the most useful and accurate tools in diagnosing and evaluating certain cardiovascular problems.
		Angiography is performed in the catheterization (cath) lab of a hospital.
	www.mayoclinic.com /health/coronary-angiography/HB00048 (1777 words)

	Coronary angiogram and heart disease information on MedicineNet.com
		A coronary angiogram is the "gold standard" for the evaluation of coronary artery disease (CAD).
		Coronary angiography is performed with the use of local anesthesia and intravenous sedation, and is generally not terribly uncomfortable.
		During a coronary angiogram, a small catheter (a thin hollow tube with a diameter of 2-3 mm) is inserted through the skin into an artery in either the groin or the arm.
	www.medicinenet.com /coronary_angiogram/article.htm (519 words)

	Coronary angiography definition - Medical Dictionary definitions of popular medical terms
		Coronary angiography is used to identify the exact location and severity of CAD.
		During coronary angiography, a small catheter (a thin hollow tube with a diameter of 2-3 mm) is inserted through the skin into an artery in the groin or the arm.
		The coronary angiogram is the only test which allows the precise quantification of the extent and severity of CAD to optimally make these treatment decisions.
	www.medterms.com /script/main/art.asp?articlekey=10298 (482 words)

	Cardiac Catheterization
		During a cardiac catheterization, a dye (contrast material) is injected into the coronary arteries to trace the movement of blood through the arteries.
		The purpose of cardiac catheterization is to determine whether you have disease in your coronary arteries, and if so, pinpoint the size and location of plaque that may have built up in your coronary arteries from atherosclerosis.
		One or more coronary arteries, or a branch, may be narrowed or completely blocked by the plaque caused by atherosclerosis.
	www.webmd.com /hw/heart_disease/hw204075.asp (3743 words)

	Cardiac Catheterization Laboratory
		Dye is injected into the coronary arteries and the left ventricle to look for degrees of narrowing, valve lesions and the ejection fraction (EF) of the left ventricle.
		Following the encouraging and long-lasting results obtained with angioplasty and stenting in the coronary, renal, and peripheral vascular systems, a natural evolutionary step was the application of these new technologies to the cerebrovascular tree.
		There is far more experience in the coronary vessels, and the cardiac literature suggests that rethrombosis occurs more commonly in vessels with significant underlying stenoses.
	www.angelfire.com /ab/cardiosv/cath.html (1364 words)

	ACC/AHA Guidelines for Coronary Angiography: Executive Summary and Recommendations : A Report of the American College ...
		The purpose of coronary angiography is to define the coronary
		anatomy and the degree of luminal obstruction of the coronary
		Acute coronary closure complicates 2% to 11% of percutaneous
	circ.ahajournals.org /cgi/content/full/99/17/2345 (5848 words)

	Cabarrus Radiology - Coronary CT Angiography
		Coronary heart disease is the most common form of heart disease, the leading cause of death for Americans.
		Using either the GE Lightspeed 16 or the Philips IDT Vortex 16 scanners, we are able to noninvasilvely evaluate the coronary arteries for atherosclerotic narrowings.
		In the recent past, only invasive coronary angiography performed using an arterial catherter could provide this type of information.
	www.cabarrusradiologists.com /our_exams/specialties/coronary_ct_angiography.php (249 words)

	MR Coronary Angiography: Are We There Yet? -- Polak 214 (3): 649 -- Radiology
		to increase the applicability of MR coronary angiography (4).
		Sardanelli F, Molinari G, Zandrino F, Balbi M. Three-dimensional, navigator-echo MR coronary angiography in detecting stenoses of the major epicardial vessels, with conventional coronary angiography as the standard of reference.
		Coronary arteries: three-dimensional MR imaging with retrospective respiratory gating.
	radiology.rsnajnls.org /cgi/content/full/214/3/649 (1273 words)

	RSNA 2004 - RSNA Event
		To compare steady-state free precession whole heart coronary MR angiography (MRA) with multidetector CT angiography (CTA) for the detection of coronary artery disease.
		Segment based values for the detection of >50% coronary stenoses were: sensitivity: MR 81.8%, CT 84.4%; specificity: MR 88.1%, CT 94.5%; overall diagnostic accuracy: MR 86.6%, CT 92.7%; positive predictive value: MR 67.5%, CT 77.1% and negative predictive value: MR 94.1%, CT 94.5%.
		Coronary WH-MRA was inferior to CTA regarding image quality and number of evaluable segments but only moderately inferior regarding the diagnostic value for the detection of CAD when only evaluable segments were included.
	rsna2004.rsna.org /rsna2004/V2004/conference/event_display.cfm?em_id=4413337 (338 words)

	Three-Dimensional Coronary MR Angiography Performed with Subject-Specific Cardiac Acquisition Windows and ...
		Reformatted 3D coronary MR angiogram of left coronary system at same level as A but acquired with subject-specific acquisition window and motion-adapted gating reveals similar image quality as in A and shows normal anatomy of left anterior descending artery (white arrow) and first diagonal branch (fl arrow).
		Coronary radiographic angiogram that corresponds to A and B shows normal anatomy of left anterior descending artery (white arrow) and first diagonal branch (fl arrow).
		Quantification of in-plane motion of the coronary arteries during the cardiac cycle: implications for acquisition window duration for MR flow quantification.
	www.ajronline.org /cgi/content/full/180/2/505 (4605 words)

	eMedicine - Coronary Artery Disease : Article by Justin D Pearlman, MD, ME, PhD, MA (Site not responding. Last check: 2007-09-18)
		Although neither MRI nor CT has replaced x-ray angiography as the clinical standard for the diagnosis of coronary stenosis, interest in their use in determining if a vessel is open is increasing.
		In a study of patients with a heart attack who underwent coronary angiography within the previous year, one half of the culprit lesions were narrowed less than 70%.
		X-ray angiography is the criterion standard for delineating the coronary anatomy, but it is inferior to MRI and CT in identifying myocardium with impaired blood delivery, in assessing the functional consequences, and in identifying the development of microvascular collaterals.
	www.emedicine.com /radio/topic192.htm (10670 words)

	Coronary Angiography - ESRF
		The program addresses the fundamental concerns associated with conventional angiography, which requires the injection of a contrast agent directely into the coronary arteries by the mean of arterial cathetherization.
		Other techniques as nuclear magnetic resonance angiography (Woodard et al., 1998) or electron beam Computed Tomography (Achenbach et al., 1998) are promising, but despite an active research in these domains, the conventional coronary angiography remains the gold standard technique.
		The dilution of the contrast agent prior to arrival in the coronary arteries, the background in the ventricles and the pulmonary veins, and the motion of the heart all present problems which are effectively solved by this technique.
	www.esrf.fr /UsersAndScience/Experiments/Imaging/ID17/angio (1981 words)

	Coronary Heart Disease: Coronary Angiography
		Next, a contrast dye is injected through the catheter to help delineate your coronary arteries and other heart structures on x-ray films; this portion of the test is termed coronary angiography or arteriography.
		In some cases, this procedure is immediately followed by treatment, such as percutaneous transluminal coronary angioplasty, which uses a catheter equipped with a small balloon to unblock coronary arteries.
		The Coronary Heart Disease White Paper from The Johns Hopkins White Papers series is an annual, in-depth report written by Johns Hopkins physicians.
	www.hopkinsafter50.com /html/silos/chd/chdLIB_JHMT_Angiography.php (960 words)

	What Tests Are Used To Diagnose And Further Evaluate A Heart Attack?
		A stress test can be performed 14 to 21 days after the heart attack to assess a patient's ability to perform routine tasks and his or her long-term prognosis.
		Coronary angiography can pinpoint narrowing, obstruction, and other abnormalities of the coronary arteries and is an essential test if the doctor is considering
		Because coronary angiography is invasive, it is not routinely performed in all individuals who have had a heart attack.
	www.ehealthmd.com /library/heartattack/HA_tests.html (1334 words)

	Dr. Koop - Coronary angiography
		Tell your doctor if you are allergic to seafood, if you have had a bad reaction to contrast material in the past, if you are taking Viagra, or if you might be pregnant.
		If the IV is placed in your groin, you will usually be asked to lie flat on your back for a few hours after the test to avoid bleeding.
		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.
	www.drkoop.com /ency/93/003876.html (603 words)

	Angioplasty, Percutaneous Transluminal Coronary (PTCA)
		Percutaneous transluminal coronary angioplasty is also known as PTCA, coronary artery balloon dilation or balloon angioplasty.
		PTCA is a less traumatic and less expensive alternative to bypass surgery for some patients with coronary artery disease.
		A very small percentage of patients need emergency coronary bypass surgery when the procedure fails to open the artery.
	www.americanheart.org /presenter.jhtml?identifier=4454 (562 words)

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