Motion pictures of the passage of contrast medium through blood vessels.
Radiography of the heart and great vessels after injection of a contrast medium.
The volume of the HEART, usually relating to the volume of BLOOD contained within it at various periods of the cardiac cycle. The amount of blood ejected from a ventricle at each beat is STROKE VOLUME.
The lower right and left chambers of the heart. The right ventricle pumps venous BLOOD into the LUNGS and the left ventricle pumps oxygenated blood into the systemic arterial circulation.
Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.

Investigation of the theory and mechanism of the origin of the second heart sound. (1/230)

To investigate further the origin of the second heart sound we studied human subjects, dogs, and a model in vitro of the cardiovascular system. Intra-arterial sound, pressure, and, where possible, flow and high speed cine (2,000 frames/sec) were utilized. The closure sound of the semilunar valves was of higher amplitude in be ventricles than in their respective arterial cavities. The direction of inscription of the main components of intra-arterial sound were opposite in direction to the components of intraventricular sound. Notches, representative of pressure increments, were noted on the ventricular pressure tracings and were coincident with the components of sound. The amplitude of the closure sound varied with diastolic pressure, but remained unchanged with augmentation of forward and retrograde aortic flow. Cines showed second sound to begin after complete valvular closure, and average leaflet closure rate was constant regardless of pressure. Hence, the semilunar valves, when closed, act as an elastic membrane and, when set into motion, generate compression and expansion of the blood, producing transient pressure changes indicative of sound. The magnitude of the initial stretch is related to the differential pressure between the arterial and ventricular chambers. Sound transients which follow the major components of the second sound appear to be caused by the continuing stretch and recoil of the leaflets. Clinically unexplained findings such as the reduced or absent second sound in calcific aortic stenosis and its paradoxical presence in congenital aortic stenosis may be explained by those observations.  (+info)

Chronic radiodermatitis following cardiac catheterisation: a report of two cases and a brief review of the literature. (2/230)

Cardiac angiography produces one of the highest radiation exposures of any commonly used diagnostic x ray procedure. Recently, serious radiation induced skin injuries have been reported after repeated therapeutic interventional procedures using prolonged fluoroscopic imaging. Two male patients, aged 62 and 71 years, in whom chronic radiodermatitis developed one to two years after two consecutive cardiac catheterisation procedures are reported. Both patients had undergone lengthy procedures using prolonged fluoroscopic guidance in a limited number of projections. The resulting skin lesions were preceded, in one case, by an acute erythema and took the form of a delayed pigmented telangiectatic, indurated, or ulcerated plaque in the upper back or below the axilla whose site corresponded to the location of the x ray tube during cardiac catheterisation. Cutaneous side effects of radiation exposure result from direct damage to the irradiated tissue and have known thresholds. The diagnosis of radiation induced skin injury relies essentially on clinical and histopathological findings, location of skin lesions, and careful medical history. Interventional cardiologists should be aware of this complication, because chronic radiodermatitis may result in painful and resistant ulceration and eventually in squamous cell carcinoma.  (+info)

Spontaneous late improvement of myocardial viability in the chronic infarct zone is possible, depending on persistent TIMI 3 flow and a low grade stenosis of the infarct artery. (3/230)

OBJECTIVE: In the chronic phase of myocardial infarction, the relation between myocardial recovery and infarct related artery status remains unclear. The spontaneous changes in rest-redistribution thallium defect size were prospectively studied over six months in 52 patients with chronic Q wave myocardial infarction. DESIGN: Changes in rest thallium defect size, thallium uptake in the infarct area, and radionuclide left ventricular ejection fraction were compared to the quantitative coronary angiogram data. Two groups of patients were considered: patients with a percentage of stenosis below 100% (group 1, n = 31); and patients with an occluded artery (group 2, n = 21). RESULTS: In the overall population, the mean (SD) defect size decreased from 28.2 (17.2)% to 24.9 (19.3)% of the whole myocardium (p = 0.01), while, in this area, the thallium uptake increased from 62.9 (13.7)% to 66. 9 (15.6)% (p < 0.001). At the time of inclusion, the defect size, thallium uptake, and ejection fraction were similar in both groups. In group 1 patients only, the reduction in defect size correlated with the improvement in ejection fraction (r = 0.41, p = 0.02) and was related to the percentage of coronary artery stenosis. TIMI 3 patients reduced the defect size while other patients increased this defect (-5.1 (7.0)% v +11.0 (14.4)%, p < 0.001). In contrast, no significant relations were found in group 2 patients. CONCLUSION: Late spontaneous recovery in thallium defect can occur in patients with a patent infarct related artery, depending on the TIMI flow grade and a low grade stenosis of the infarct related artery, and is associated with functional improvement.  (+info)

Relationship between TIMI frame count and clinical outcomes after thrombolytic administration. Thrombolysis In Myocardial Infarction (TIMI) Study Group. (4/230)

BACKGROUND: The corrected TIMI frame count (CTFC) is the number of cine frames required for dye to first reach standardized distal coronary landmarks, and it is an objective and quantitative index of coronary blood flow. METHODS AND RESULTS: The CTFC was measured in 1248 patients in the TIMI 4, 10A, and 10B trials, and its relationship to clinical outcomes was examined. Patients who died in the hospital had a higher CTFC (ie, slower flow) than survivors (69. 6+/-35.4 [n=53] versus 49.5+/-32.3 [n=1195]; P=0.0003). Likewise, patients who died by 30 to 42 days had higher CTFCs than survivors (66.2+/-36.4 [n=57] versus 49.9+/-32.1 [n=1059]; P=0.006). In a multivariate model that excluded TIMI flow grades, the 90-minute CTFC was an independent predictor of in-hospital mortality (OR=1.21 per 10-frame rise [95% CI, 1.1 to 1.3], an approximately 0.7% increase in absolute mortality for every 10-frame rise; P<0.001) even when other significant correlates of mortality (age, heart rate, anterior myocardial infarction, and female sex) were adjusted for in the model. The CTFC identified a subgroup of patients with TIMI grade 3 flow who were at a particularly low risk of adverse outcomes. The risk of in-hospital mortality increased in a stepwise fashion from 0.0% (n=41) in patients with a 90-minute CTFC that was faster than the 95% CI for normal flow (0 to 13 frames, hyperemia, TIMI grade 4 flow), to 2.7% (n=18 of 658 patients) in patients with a CTFC of 14 to 40 (a CTFC of 40 has previously been identified as the cutpoint for distinguishing TIMI grade 3 flow), to 6.4% (35/549) in patients with a CTFC >40 (P=0.003). Although the risk of death, recurrent myocardial infarction, shock, congestive heart failure, or left ventricular ejection fraction 20 to +info)

Prognostication in 3-vessel coronary artery disease based on left ventricular ejection fraction during exercise : influence of coronary artery bypass grafting. (5/230)

BACKGROUND: Previous data indicate that left ventricular ejection fraction (LVEF) provides prognostic information among patients with coronary artery disease (CAD), but the value of such testing specifically for defining benefits of coronary artery bypass grafting (CABG) may relate to severity of exercise-inducible ischemia measured noninvasively before surgery. METHODS AND RESULTS: To determine the independent prognostic importance of preoperative ischemia severity for predicting outcomes of CABG among patients with extensive CAD, we monitored 167 stable patients with angiographically documented 3-vessel CAD (average follow-up of 9 years in event-free patients) who previously had undergone rest and exercise radionuclide cineangiography. Their course was correlated with data obtained during initial radionuclide testing, coronary arteriography, and clinical evaluation at study entry. Fifty-two patients received medical treatment only, and 115 underwent CABG (44 early [+info)

Right ventricular diastolic function in patients with hypertrophic cardiomyopathy--an invasive study. (6/230)

To assess diastolic function of the right ventricle (RV) in patients with hypertrophic cardiomyopathy (HCM), biplane RV angiograms and RV pressures were analyzed in 19 HCM patients and in 13 normal subjects. RV and left ventricle (LV) pressures were measured using catheter-tip manometers. RV volumes were obtained from frame-by-frame tracings of angiograms. Ventricular relaxation was assessed by the time constant of isovolumic pressure decay (T). The peak filling rate (PFR) and the time to PFR (TPFR) were used as parameters of early diastolic filling, and the right atrial contribution to RV filling (%AF) was used as a parameter of late diastolic filling. The T for the RV was significantly prolonged in HCM patients. However, there was no significant correlation between the T for the RV and LV, nor did the T for the RV correlate with the RV ejection fraction or interventricular septal wall thickness. The TPFR, but not PFR, was significantly greater in HCM patients, and the %AF tended to be increased in HCM, but not significantly. The RV diastolic pressure-volume relations in the HCM patients shifted upward. In conclusion, impaired isovolumic relaxation and delayed diastolic filling and decreased diastolic distensibility are present in the RV of HCM patients.  (+info)

Prediction of functional recovery of viable myocardium after delayed revascularization in postinfarction patients: accuracy of dobutamine stress echocardiography and influence of long-term vessel patency. (7/230)

OBJECTIVES: We sought to evaluate dobutamine stress echocardiography (DSE) for predicting recovery of viable myocardium after revascularization with cineangiography as a gold standard for left ventricular (LV) function. We studied the influence of late vessel reocclusion on regional LV function. BACKGROUND: Dobutamine stress echocardiography is a well established evaluation method for myocardial viability assessment. In previous studies the reference method for assessing LV recovery was echocardiography, long-term vessel patency has not been systematically addressed. METHODS: Sixty-eight patients with a first acute myocardial infarction (AMI) and residual stenosis of the infarct related artery (IRA) underwent DSE (mean +/- standard deviation) 21 +/- 12 days after AMI to evaluate myocardial viability. Revascularization of the IRA was performed in 54 patients by angioplasty (n = 43) or bypass grafting (n = 11). Coronary angiography and LV cineangiography were repeated at four months to assess LV function and IRA patency. RESULTS: Sensitivity and specificity of DSE for predicting myocardial recovery after revascularization were 83% and 82%. In the case of late IRA patency, specificity increased to 95%, whereas sensitivity remained unchanged. In the 16 patients with myocardial viability and late IRA patency, echocardiographic wall motion score index decreased after revascularization from 1.83 +/- 0.15 to 1.36 +/- 0.17 (p = 0.0001), and left ventricular ejection fraction (LVEF) increased from 0.52 +/- 0.06 to 0.57 +/- 0.06 (p = 0.0004), whereas in five patients, reocclusion of the IRA prevented improvement of segmental or global LV function despite initially viable myocardium. CONCLUSIONS: Dobutamine stress echocardiography is reliable to predict recovery of viable myocardium after revascularization in postinfarction patients. Late reocclusion of the IRA may prevent LV recovery and influence the accuracy of DSE.  (+info)

Effect of potential confounding factors on the thrombolysis in myocardial infarction (TIMI) trial frame count and its reproducibility. (8/230)

BACKGROUND: The potential factors that introduce variability into TIMI frame count (TFC) have not been systematically investigated. The goal of this study was to determine if nitrate use, dye injection rate, catheter size, the phase of the cardiac cycle in which dye is injected, or heart rate affect the TFC and to investigate the reproducibility of the TFC. METHODS AND RESULTS: The dye injection rate was increased 1 mL/s, and angiography was repeated. A coronary angiogram was taken first with an 8F catheter and then with a 6F catheter. After taking angiograms, intracoronary nitrate was given to the patient, and the second angiography was performed. Basal heart rate was increased 20 beats/min, and angiography was repeated. Dye injection was performed at the beginning of systole and diastole. The TFC was not significantly changed by increasing the dye injection rate (P=0.467) or by changing catheter size (P=0.693). Nitrate administration significantly increased the TFC from 26.4+/-11.9 to 32.8+/-13.3 frames (P<0.001). Dye injection at the beginning of diastole significantly decreased the TFC from 30.1+/-8.8 to 24.4+/-7.9 frames (P<0.001) for the left coronary artery and from 24.16+/-4.49 to 21. 24+/-4.45 frames (P<0.001) for the right coronary artery. Increasing heart rate significantly decreased the TFC from 30.4+/-6.1 to 25. 3+/-7.2 frames (P<0.001). Intraobserver and interobserver reproducibility of the TFC was good (mean difference, 1.33+/-1.24 and 2.57+/-1.72 frames, respectively). CONCLUSIONS: Nitrate use, heart rate, and the phase of the cardiac cycle in which dye is injected had significant effects on the TFC. Therefore, studies comparing TFC need to consider these factors, and the use of nitrates should be either standardized or randomized.  (+info)

Cineangiography is a medical imaging technique used to visualize the blood flow in the heart and cardiovascular system. It involves the injection of a contrast agent into the bloodstream while X-ray images are taken in quick succession, creating a movie-like sequence that shows the movement of the contrast through the blood vessels and chambers of the heart. This technique is often used to diagnose and evaluate various heart conditions, such as coronary artery disease, valvular heart disease, and congenital heart defects.

The procedure typically involves threading a catheter through a blood vessel in the arm or leg and guiding it to the heart. Once in place, the contrast agent is injected, and X-ray images are taken using a specialized X-ray machine called a fluoroscope. The images captured during cineangiography can help doctors identify areas of narrowing or blockage in the coronary arteries, abnormalities in heart valves, and other cardiovascular problems.

Cineangiography is an invasive procedure that carries some risks, such as bleeding, infection, and reactions to the contrast agent. However, it can provide valuable information for diagnosing and treating heart conditions, and may be recommended when other diagnostic tests have been inconclusive.

Angiocardiography is a medical procedure used to examine the heart and blood vessels, particularly the chambers of the heart and the valves between them. It involves injecting a contrast agent into the bloodstream and taking X-ray images as the agent flows through the heart. This allows doctors to visualize any abnormalities such as blockages, narrowing, or leakage in the heart valves or blood vessels.

There are different types of angiocardiography, including:

* Left heart catheterization (LHC): A thin tube called a catheter is inserted into a vein in the arm or groin and threaded through to the left side of the heart to measure pressure and oxygen levels.
* Right heart catheterization (RHC): Similar to LHC, but the catheter is threaded through to the right side of the heart to measure pressure and oxygen levels there.
* Selective angiocardiography: A catheter is used to inject the contrast agent into specific blood vessels or chambers of the heart to get a more detailed view.

Angiocardiography can help diagnose and evaluate various heart conditions, including congenital heart defects, coronary artery disease, cardiomyopathy, and valvular heart disease. It is an invasive procedure that carries some risks, such as bleeding, infection, and damage to blood vessels or heart tissue. However, it can provide valuable information for diagnosing and treating heart conditions.

Cardiac volume refers to the amount of blood contained within the heart chambers at any given point in time. It is a measure of the volume of blood that is being moved by the heart during each cardiac cycle, which includes both systole (contraction) and diastole (relaxation) phases.

There are several types of cardiac volumes that are commonly measured or estimated using medical imaging techniques such as echocardiography or cardiac magnetic resonance imaging (MRI). These include:

1. End-diastolic volume (EDV): This is the volume of blood in the heart chambers at the end of diastole, when the heart chambers are fully filled with blood.
2. End-systolic volume (ESV): This is the volume of blood in the heart chambers at the end of systole, when the heart chambers have contracted and ejected most of the blood.
3. Stroke volume (SV): This is the difference between the EDV and ESV, and represents the amount of blood that is pumped out of the heart with each beat.
4. Cardiac output (CO): This is the product of the stroke volume and heart rate, and represents the total amount of blood that is pumped by the heart in one minute.

Abnormalities in cardiac volumes can indicate various heart conditions such as heart failure, valvular heart disease, or cardiomyopathy.

The heart ventricles are the two lower chambers of the heart that receive blood from the atria and pump it to the lungs or the rest of the body. The right ventricle pumps deoxygenated blood to the lungs, while the left ventricle pumps oxygenated blood to the rest of the body. Both ventricles have thick, muscular walls to generate the pressure necessary to pump blood through the circulatory system.

Cardiac catheterization is a medical procedure used to diagnose and treat cardiovascular conditions. In this procedure, a thin, flexible tube called a catheter is inserted into a blood vessel in the arm or leg and threaded up to the heart. The catheter can be used to perform various diagnostic tests, such as measuring the pressure inside the heart chambers and assessing the function of the heart valves.

Cardiac catheterization can also be used to treat certain cardiovascular conditions, such as narrowed or blocked arteries. In these cases, a balloon or stent may be inserted through the catheter to open up the blood vessel and improve blood flow. This procedure is known as angioplasty or percutaneous coronary intervention (PCI).

Cardiac catheterization is typically performed in a hospital cardiac catheterization laboratory by a team of healthcare professionals, including cardiologists, radiologists, and nurses. The procedure may be done under local anesthesia with sedation or general anesthesia, depending on the individual patient's needs and preferences.

Overall, cardiac catheterization is a valuable tool in the diagnosis and treatment of various heart conditions, and it can help improve symptoms, reduce complications, and prolong life for many patients.

Here, he contributed to angiocardiography (Cine angiography had not yet been invented) when he invented and built by his own ...
... can be measured through a variety of methods, including digital subtraction cineangiography with coronary ... and digital subtraction cineangiography". European Heart Journal. 10 (8): 725-36. doi:10.1093/oxfordjournals.eurheartj.a059557 ...
Beginning his research in 1960, he developed and introduced an X-ray movie technique - coronary cineangiography - for ...
... working on the design of radiological equipment for angiography and image analysis algorithms of cineangiography. From 1994 to ...
... cineangiography MeSH E01.370.350.700.060.200 - coronary angiography MeSH E01.370.350.700.060.600 - phlebography MeSH E01.370. ... cineangiography MeSH E01.370.350.700.175 - densitometry, x-ray MeSH E01.370.350.700.200 - electrokymography MeSH E01.370. ... cineangiography MeSH E01.370.370.050.200 - coronary angiography MeSH E01.370.370.050.350 - fluorescein angiography MeSH E01.370 ...
... or conventional pulmonary cineangiography (PAG), such as ring-like stenoses, webs/slits, chronic total occlusions (pouch ...
Mitral regurgitation as seen with left ventricular (LV) cineangiography. View Media Gallery ... Mitral regurgitation as seen with left ventricular (LV) cineangiography. View Media Gallery ...
Radionuclide angiography or contrast cineangiography may be necessary when clinical suspicion for heart failure is high and the ... Radionuclide angiography or contrast cineangiography may be necessary when clinical suspicion for heart failure is high and the ... Radionuclide angiography or contrast cineangiography may be helpful if the echocardiogram is equivocal or technically ... radionuclide angiography and contrast cineangiography. J Am Coll Cardiol. 1995;25:937-42. ...
Here, he contributed to angiocardiography (Cine angiography had not yet been invented) when he invented and built by his own ...
Cineangiography of the left and right coronary arteries was performed by injecting iohexol manually with ECG monitoring. After ...
Angiography can provide still images or motion pictures (called cineangiography). Cineangiography can show how fast blood ...
04/01/1981 - "Radionuclide cineangiography was used to evaluate 32 patients who sustained long-term remission of soft tissue ...
Left ventricular cine-angiography established that there was normal contractility and confirmed the absence of past MI. ...
Cineangiography in the diagnosis and evaluation of aortic dissection. Gutierrez, F. R., Gowda, S., Ludbrook, P. A. & McKnight, ...
Supravalvar aortic stenosis (SVAS) is a fixed form of congenital left ventricular outflow tract (LVOT) obstruction that occurs as a localized or diffuse narrowing of the ascending aorta beyond the superior margin of the sinuses of Valsalva. It accounts for less than 7% of all fixed forms of congenital LVOT obstructive lesions.
Main type of heart coronary diseases are atrial septal defect, Cineangiography, ventricular septal defect, Coarctation of the ...
A Clinical Study on Cardiovascular Disease of Children Taken Cardiac Catheterization and Cineangiography Gi Yeon Song, Seog ... to pediatric department of Chonbuk National University Hospital and performed cardiac catheterization and cineangiography from ...
On the MathWorks Account download CSS3 The Missing Manual 2013, cineangiography Download Products. Download and paste the image ...
Exposure time and total images and frame counts in cineangiography were similar in both groups. There was a marked reduction of ... The LDP consists of 10 frames per second during fluoroscopy and half the radiation dose of CDP during cineangiography. Image ...
Stenosis parameter assessment from contrast medium tracking in cineangiography with an optical flow method [Paper]. Medical ...
... for repeated analyses of the digital angiograms due the the slightly lower resolution compared with cineangiography. The two ...
CPA Accredited Internship: 95%Licensure Rate: nuclear: dignity: The diligence views 5 students of cineangiography to all ...
... of LV hypertrophy and contractility following aortic valve replacement.Preoperative data from quantitative cineangiography and ...
Cineangiography, a type of move x-ray, will provide clear pictures of your arteries so that your doctor can evaluate for any ...
Now enable CT to be used as an accurate noninvasive clinical instrument that is fast replacing invasive cine-angiography in the ...
categorized on practices and output based in the work of care cineangiography models for short-term government region ...
LIMITATIONS OF COMPARING LEFT-VENTRICULAR VOLUMES BY 2 DIMENSIONAL ECHOCARDIOGRAPHY, MYOCARDIAL MARKERS AND CINEANGIOGRAPHY ... with a variety of cardiac disorders and compare the left ventricular volumes measured with those obtained using cineangiography ...
Cineangiography * Clinical Pharmacoepidemiological Trails * Clinical Pharmacovigilance * Clinical Trials Pharmacovigilance * ...
Cineangiography [E01.370.350.700.060.190] * Coronary Angiography [E01.370.350.700.060.200] * Phlebography [E01.370.350.700. ...
Cineangiography [E01.370.370.050.190] Cineangiography * Coronary Angiography [E01.370.370.050.200] Coronary Angiography ...
Cineangiography. *Coronary Angiography. *Fluorescein Angiography. *Magnetic Resonance Angiography. *Phlebography. *Portography ...
3-Dimensional Motion and Reconstruction of Coronary-Arteries from Biplane Cineangiography. * 3-dimensional object modeling with ...
Chest Tube Placement Chest Tube Removal Chest Wall Tumor Resection Chronic Atrial Fibrillation Cineangiography Cineangiography ... Chest Tube Placement Chest Tube Removal Chest Wall Tumor Resection Chronic Atrial Fibrillation Cineangiography Cineangiography ... Chest Tube Placement Chest Tube Removal Chest Wall Tumor Resection Chronic Atrial Fibrillation Cineangiography Cineangiography ...
  • Radionuclide angiography or contrast cineangiography may be necessary when clinical suspicion for heart failure is high and the echocardiogram is equivocal. (aafp.org)
  • Angiography can provide still images or motion pictures (called cineangiography). (msdmanuals.com)
  • Stenosis parameter assessment from contrast medium tracking in cineangiography with an optical flow method [Paper]. (polymtl.ca)
  • Mitral regurgitation as seen with left ventricular (LV) cineangiography. (medscape.com)
  • Cineangiography, a type of move x-ray, will provide clear pictures of your arteries so that your doctor can evaluate for any problems. (cicmd.com)
  • Patients referred for coronary angiography with abdominal circumference60 ml/min were randomized to the fluorography (n = 25) or cineangiography (n = 25) group. (hofstra.edu)
  • Patients in the fluorography group underwent coronary angiography using retrospectively stored fluorography with repeat injection under cineangiography only when needed for better resolution per operator's discretion. (hofstra.edu)
  • Patients in the cineangiography group underwent coronary angiography using routine cineangiography. (hofstra.edu)
  • In conclusion, the use of fluorography in a select group of patients during coronary angiography, with repeat injection under cineangiography only when needed, was efficacious at reducing patient radiation exposure. (hofstra.edu)
  • Diagnostic sensitivity and specificity of cineangiography were evaluated by multivariate logistic discriminant analysis in 32 patients with arrhythmogenic right ventricular (RV) cardiomyopathy, 27 patients with biventricular dilated cardiomyopathy, 28 patients with atrial septal defect and 18 normal subjects. (nih.gov)