A dual collimator design for beat-to-beat measurement of cardiac performance with an Anger camera
Journal Article
·
· J. Nucl. Med.; (United States)
OSTI ID:6705649
A dual collimator was designed for an Anger camera to permit measurement of cardiac performance on a beat-to-beat basis. Special all-purpose (SAP) and special high-sensitivity (SHS) collimator sections can be interchanged without movement of the patient. Thus, left-ventricular regions of interest delineated on SAP multigated images can be transferred to SHS dynamic images to generate beat-to-beat volume curves. Preliminary balloon studies demonstrated an excellent correlation between ejection fractions calculated with the two collimators: r greater than 0.99, n . 17, p less than 0.001. Varying the volume of an adjacent right ventricle balloon failed to alter significantly the count rate from the left ventricle balloon's region of interest. Preliminary results on 12 patients, comparing standard-camera ejection fractions with average beat-to-beat ejection fractions, showed that is is possible to measure cardiac function on a beat-to-beat basis with a single-crystal gamma camera. There was minimal difference between the ejection fractions calculated by the dual-collimator method and a standard gated technique (r . 0.98, n . 12, p less than 0.001).
- Research Organization:
- Albert Einstein College of Medicine, Bronx, New York
- OSTI ID:
- 6705649
- Journal Information:
- J. Nucl. Med.; (United States), Journal Name: J. Nucl. Med.; (United States) Vol. 23:9; ISSN JNMEA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
550601* -- Medicine-- Unsealed Radionuclides in Diagnostics
551001 -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD CIRCULATION
BODY
CARDIOVASCULAR SYSTEM
COLLIMATORS
COUNTING TECHNIQUES
DESIGN
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
DYNAMIC FUNCTION STUDIES
HEART
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
TECHNETIUM 99
TECHNETIUM ISOTOPES
USES
VOLUME
YEARS LIVING RADIOISOTOPES
551001 -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
62 RADIOLOGY AND NUCLEAR MEDICINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BLOOD CIRCULATION
BODY
CARDIOVASCULAR SYSTEM
COLLIMATORS
COUNTING TECHNIQUES
DESIGN
DIAGNOSTIC TECHNIQUES
DIAGNOSTIC USES
DYNAMIC FUNCTION STUDIES
HEART
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PATIENTS
RADIOISOTOPE SCANNING
RADIOISOTOPES
SCINTISCANNING
TECHNETIUM 99
TECHNETIUM ISOTOPES
USES
VOLUME
YEARS LIVING RADIOISOTOPES