Biomaterial Database

[Calculation of left ventricular volume and ejection fraction from ECG-gated myocardial SPECT: automatic detection of endocardial borders by threshold method]. 1997

S Fukushi, and S Teraoka

Department of Radiology, Kuroishi Municipal Hospital, Aomori.

A new method which calculate end-diastolic volume (EDV), end-systolic volume (ESV) and ejection fraction (LVEF) of the left ventricle from myocardial short axis images of ECG-gated SPECT using 99mTc myocardial perfusion tracer has been designed. Eight frames per cardiac cycle ECG-gated 180 degrees SPECT was performed. Threshold method was used to detect myocardial borders automatically. The optimal threshold was 45% by myocardial SPECT phantom. To determine if EDV, ESV and LVEF can also be calculated by this method, 12 patients were correlated ventriculography (LVG) for 10 days each. The correlation coefficient with LVG was 0.918 (EDV), 0.935 (ESV) and 0.900 (LVEF). This method is excellent at objectivity and reproductivity because of the automatic detection of myocardial borders. It also provides useful information on heart function in addition to myocardial perfusion.

UI	MeSH Term	Description	Entries
D009943	Organophosphorus Compounds	Organic compounds that contain phosphorus as an integral part of the molecule. Included under this heading is broad array of synthetic compounds that are used as PESTICIDES and DRUGS.	Organophosphorus Compound,Organopyrophosphorus Compound,Organopyrophosphorus Compounds,Compound, Organophosphorus,Compound, Organopyrophosphorus,Compounds, Organophosphorus,Compounds, Organopyrophosphorus
D004562	Electrocardiography	Recording of the moment-to-moment electromotive forces of the HEART as projected onto various sites on the body's surface, delineated as a scalar function of time. The recording is monitored by a tracing on slow moving chart paper or by observing it on a cardioscope, which is a CATHODE RAY TUBE DISPLAY.	12-Lead ECG,12-Lead EKG,12-Lead Electrocardiography,Cardiography,ECG,EKG,Electrocardiogram,Electrocardiograph,12 Lead ECG,12 Lead EKG,12 Lead Electrocardiography,12-Lead ECGs,12-Lead EKGs,12-Lead Electrocardiographies,Cardiographies,ECG, 12-Lead,EKG, 12-Lead,Electrocardiograms,Electrocardiographies, 12-Lead,Electrocardiographs,Electrocardiography, 12-Lead
D004699	Endocardium	The innermost layer of the heart, comprised of endothelial cells.	Endocardiums
D006321	Heart	The hollow, muscular organ that maintains the circulation of the blood.	Hearts
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013318	Stroke Volume	The amount of BLOOD pumped out of the HEART per beat, not to be confused with cardiac output (volume/time). It is calculated as the difference between the end-diastolic volume and the end-systolic volume.	Ventricular Ejection Fraction,Ventricular End-Diastolic Volume,Ventricular End-Systolic Volume,Ejection Fraction, Ventricular,Ejection Fractions, Ventricular,End-Diastolic Volume, Ventricular,End-Diastolic Volumes, Ventricular,End-Systolic Volume, Ventricular,End-Systolic Volumes, Ventricular,Fraction, Ventricular Ejection,Fractions, Ventricular Ejection,Stroke Volumes,Ventricular Ejection Fractions,Ventricular End Diastolic Volume,Ventricular End Systolic Volume,Ventricular End-Diastolic Volumes,Ventricular End-Systolic Volumes,Volume, Stroke,Volume, Ventricular End-Diastolic,Volume, Ventricular End-Systolic,Volumes, Stroke,Volumes, Ventricular End-Diastolic,Volumes, Ventricular End-Systolic
D015609	Organotechnetium Compounds	Organic compounds that contain technetium as an integral part of the molecule. These compounds are often used as radionuclide imaging agents.	Compounds, Organotechnetium
D015637	Gated Blood-Pool Imaging	Radionuclide ventriculography where scintigraphic data is acquired during repeated cardiac cycles at specific times in the cycle, using an electrocardiographic synchronizer or gating device. Analysis of right ventricular function is difficult with this technique; that is best evaluated by first-pass ventriculography (VENTRICULOGRAPHY, FIRST-PASS).	Angiography, Gated Radionuclide,Equilibrium Radionuclide Angiography,Equilibrium Radionuclide Ventriculography,Gated Blood-Pool Scintigraphy,Gated Equilibrium Blood-Pool Scintigraphy,Radionuclide Angiography, Gated,Radionuclide Ventriculography, Gated,Scintigraphy, Equilibrium,Ventriculography, Equilibrium Radionuclide,Ventriculography, Gated Radionuclide,Blood-Pool Scintigraphy,Equilibrium Radionuclide Angiocardiography,Gated Equilibrium Blood Pool Scintigraphy,Angiocardiographies, Equilibrium Radionuclide,Angiocardiography, Equilibrium Radionuclide,Angiographies, Equilibrium Radionuclide,Angiographies, Gated Radionuclide,Angiography, Equilibrium Radionuclide,Blood Pool Scintigraphy,Blood-Pool Imaging, Gated,Blood-Pool Imagings, Gated,Blood-Pool Scintigraphies,Blood-Pool Scintigraphies, Gated,Blood-Pool Scintigraphy, Gated,Equilibrium Radionuclide Angiocardiographies,Equilibrium Radionuclide Angiographies,Equilibrium Radionuclide Ventriculographies,Equilibrium Scintigraphies,Equilibrium Scintigraphy,Gated Blood Pool Imaging,Gated Blood Pool Scintigraphy,Gated Blood-Pool Imagings,Gated Blood-Pool Scintigraphies,Gated Radionuclide Angiographies,Gated Radionuclide Angiography,Gated Radionuclide Ventriculographies,Gated Radionuclide Ventriculography,Imaging, Gated Blood-Pool,Imagings, Gated Blood-Pool,Radionuclide Angiocardiographies, Equilibrium,Radionuclide Angiocardiography, Equilibrium,Radionuclide Angiographies, Equilibrium,Radionuclide Angiographies, Gated,Radionuclide Angiography, Equilibrium,Radionuclide Ventriculographies, Equilibrium,Radionuclide Ventriculographies, Gated,Radionuclide Ventriculography, Equilibrium,Scintigraphies, Blood-Pool,Scintigraphies, Equilibrium,Scintigraphies, Gated Blood-Pool,Scintigraphy, Blood-Pool,Scintigraphy, Gated Blood-Pool,Ventriculographies, Equilibrium Radionuclide,Ventriculographies, Gated Radionuclide
D015899	Tomography, Emission-Computed, Single-Photon	A method of computed tomography that uses radionuclides which emit a single photon of a given energy. The camera is rotated 180 or 360 degrees around the patient to capture images at multiple positions along the arc. The computer is then used to reconstruct the transaxial, sagittal, and coronal images from the 3-dimensional distribution of radionuclides in the organ. The advantages of SPECT are that it can be used to observe biochemical and physiological processes as well as size and volume of the organ. The disadvantage is that, unlike positron-emission tomography where the positron-electron annihilation results in the emission of 2 photons at 180 degrees from each other, SPECT requires physical collimation to line up the photons, which results in the loss of many available photons and hence degrades the image.	CAT Scan, Single-Photon Emission,CT Scan, Single-Photon Emission,Radionuclide Tomography, Single-Photon Emission-Computed,SPECT,Single-Photon Emission-Computed Tomography,Tomography, Single-Photon, Emission-Computed,Single-Photon Emission CT Scan,Single-Photon Emission Computer-Assisted Tomography,Single-Photon Emission Computerized Tomography,CAT Scan, Single Photon Emission,CT Scan, Single Photon Emission,Emission-Computed Tomography, Single-Photon,Radionuclide Tomography, Single Photon Emission Computed,Single Photon Emission CT Scan,Single Photon Emission Computed Tomography,Single Photon Emission Computer Assisted Tomography,Single Photon Emission Computerized Tomography,Tomography, Single-Photon Emission-Computed
D016277	Ventricular Function, Left	The hemodynamic and electrophysiological action of the left HEART VENTRICLE. Its measurement is an important aspect of the clinical evaluation of patients with heart disease to determine the effects of the disease on cardiac performance.	Left Ventricular Function,Function, Left Ventricular,Functions, Left Ventricular,Left Ventricular Functions,Ventricular Functions, Left