RSNA 2003 

Abstract Archives of the RSNA, 2003


Q21-1383

Calculation and Relevance of Left Ventricular Volumes Measured by Gated Cardiac SPECT Imaging

Scientific Papers

Presented on December 4, 2003
Presented as part of Q21: Nuclear Medicine (Central Nervous System and Cardiac)

Participants

Michael Rees MD, PRESENTER: Nothing to Disclose

Abstract: HTML Purpose: To establish a normal range of end-systolic and end-diastolic left ventricular volumes with rest and after stress and to develop a clinical index of abnormality of gated left ventricular cardiac volumes. Methods and Materials: Previous published work in our center has established a correlation of gated cardiac SPECT ventricular volumes with echocardiography. In this study we measured gated volumes in all patients undergoing stress perfusion cardiac scans for suspected coronary disease using a double headed gamma camera using the MULTIDIM analysis package. Patients were stratified as normal (n=65) if they had a normal ejection fraction (>60%) and a normal myocardial perfusion index using the MYOQUANT calculation package. Abnormal patients had evidence of significant non-reversible defects and a MYOQUANT score >5(n=46) Stress imaging was undertaken 1.5 hours after stress when the ECG, pulse rate and blood pressure had normalized. Results: 65 patients (26 male, 40 female, average age 60.1 yrs) had a normal ejection fraction and a normal MYOQUANT score. The average end-diastolic volume at rest was 113.05+/-32.13 mls. Average end-diastolic volume after stress was 113.32+/-30.41. Stress and rest examinations were taken 7 days apart. Average end-systolic volumes were 35.9+/-12.42 mls.(stress) and 33.49+/-13.31(rest). The abnormal group had an average end-diastolic volume of 257.37+/-70.034 mls. (after stress) and 259.75+/-82.01mls. (at rest)Average end systolic volumes were 142.7+/-77.12 mls. (after stress) and 138+/-62.27 mls. (at rest). Correlation of stress and rest volumes was greater than r=. 94 in all studies Conclusion: Left ventricular volumes can be measured with significant reproducibility by gated SPECT imaging and may be a significant indicator of severity of disease in the assessment of myocardial perfusion imaging.       Questions about this event email: m.rees@bris.ac.uk

Cite This Abstract

Rees MD, M, Calculation and Relevance of Left Ventricular Volumes Measured by Gated Cardiac SPECT Imaging.  Radiological Society of North America 2003 Scientific Assembly and Annual Meeting, November 30 - December 5, 2003 ,Chicago IL. http://archive.rsna.org/2003/3107438.html