Assessment of regurgitant fraction and right and left ventricular function at rest and during exercise: a new technique for determination of right ventricular stroke counts from gated equilibrium blood pool studies

Journal Article · Mon Nov 01 04:00:00 EST 1982 · Am. Heart J.; (United States)

DOI:https://doi.org/10.1016/0002-8703(82)90425-2· OSTI ID:6531642

Henze, E; Schelbert, H R; Wisenberg, G; Ratib, O; Schoen, H

Calculation of accurate stroke count ratios for the assessment of valvular regurgitation from equilibrium blood pool images has been difficult and did not permit computation of regurgitant fractions (RF) because of contamination of right ventricular (RV) stroke counts by right atrial activity. We describe a new approach to correct for this contamination by subtracting one half of the right atrial counts from the RV counts, assuming that in the standard or modified left anterior oblique projection commonly used about one half of the right atrial activity is superimposed to the RV. This new method was tested in 20 patients without valvular disease or shunts. The results indicate that this new approach permits assessment of RVEF and RF from gated equilibrium blood pool studies and is suitable to evaluate the hemodynamic response to physiologic and therapeutic interventions in patients with valvular regurgitation.

• Research Organization: Division of Nuclear Medicine, UCLA School of Medicine, Los Angeles
• OSTI ID: 6531642
• Journal Information: Am. Heart J.; (United States), Journal Name: Am. Heart J.; (United States) Vol. 104:5 Pt 1; ISSN AHJOA
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
BIOLOGICAL MATERIALS
BLOOD
BLOOD CIRCULATION
BODY
BODY FLUIDS
CARDIOVASCULAR DISEASES
CARDIOVASCULAR SYSTEM
COUNTING TECHNIQUES
DIAGNOSIS
DIAGNOSTIC TECHNIQUES
DISEASES
DRUGS
DYNAMIC FUNCTION STUDIES
EVALUATION
EXERCISE
HEART
LABELLED COMPOUNDS
MATERIALS
MEASURING METHODS
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOPHARMACEUTICALS
SCINTISCANNING