Videodensitometric ejection fraction from intravenous digital subtraction right ventriculograms: correlation with first pass radionuclide ejection fraction
Thirty-one consecutive patients undergoing intravenous blurred mask digital subtraction right ventriculography were submitted to first pass radionuclide angiography. Second order mask resubtraction of end-diastolic and end-systolic right ventricular digital image frames was executed using preinjection end-diastolic and end-systolic frames to rid the digital subtraction images of mis-registration artifact. End-diastolic and end-systolic perimeters were drawn manually by two independent observers with a light pen. Ejection fractions calculated from the integrated videodensitometric counts within these perimeters correlated well with those derived from the first pass radionuclide right ventriculogram (r = 0.84) and the interobserver correlation was acceptable (r = 0.91). Interobserver differences occurred more frequently in patients with atrial fibrillation and in those whose tricuspid valve planes were difficult to discern on the digital subtraction right ventriculograms. These results suggest that videodensitometric analysis of digital subtraction right ventriculograms is an accurate method of determining right ventricular ejection fraction and may find wide clinical applicability.
- OSTI ID:
- 6527951
- Journal Information:
- J. Am. Coll. Cardiol.; (United States), Vol. 6
- Country of Publication:
- United States
- Language:
- English
Similar Records
ECG-gated blood pool tomography in the determination of left ventricular volume, ejection fraction, and wall motion
Radionuclide ventriculography: a noninvasive method for the detection and quantification of left-to-right shunts in atrial septal defect
Related Subjects
CARDIOVASCULAR DISEASES
DIAGNOSIS
HEART
BIOMEDICAL RADIOGRAPHY
DTPA
PATIENTS
TECHNETIUM
AMINO ACIDS
BODY
CARBOXYLIC ACIDS
CARDIOVASCULAR SYSTEM
CHELATING AGENTS
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
ELEMENTS
MEDICINE
METALS
NUCLEAR MEDICINE
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANS
RADIOLOGY
RADIOPROTECTIVE SUBSTANCES
TRANSITION ELEMENTS
550601* - Medicine- Unsealed Radionuclides in Diagnostics