Assessment of left ventricular function using solid-state gamma camera equipped with a highly-sensitive collimator.

Abstract

PURPOSE:

The solid-state gamma camera 2020tc Imager (Digirad, CA) is now commercially available and has been clinically applied. The present study evaluates the feasibility of equilibrium radionuclide ventriculography (ERNV) within a 3 min period using this camera equipped with a highly sensitive collimator.

MATERIALS AND METHODS:

ERNV was performed from the best septal position (left anterior oblique view) in 20 patients with cardiac disease using a single detector anger-type gamma camera equipped with a low-energy, high-resolution collimator. Immediately thereafter, we performed a second ERNV using the solid-state gamma camera equipped with a highly sensitive collimator. Acquisition periods were 10 and 3 min, respectively.

RESULTS:

Significantly more counts were collected from over the left ventricle with the solid-state gamma camera over 3 min than those with the anger-type gamma camera over 10 min (817.1 +/- 387.8 k counts vs. 668.2 +/- 327.4 k counts, p < 0.01). The left ventricular ejection fraction obtained from ERNV data using the solid-state gamma camera correlated closely with those acquired by the anger-type gamma camera (r = 0.94, p < 0.0001, SEE = 5.93%).

CONCLUSION:

The results showed that the solid-state gamma camera could assess left ventricular function with excellent data collection efficiency and high reliability.

• Authors: Shin-ichiro Kumita, Keiji Tanaka, Keiichi Cho, Naoki Sato, Hidenobu Nakajo, Masahiro Toba, Yoshimitsu Fukushima, Sunao Mizumura, Teruo Takano, Tatsuo Kumazaki
• Journal: Annals of nuclear medicine (Ann Nucl Med) Vol. 17 Issue 6 Pg. 517-20 (Sep 2003) ISSN: 0914-7187 [Print] Japan
• PMID: 14575391 (Publication Type: Clinical Trial, Comparative Study, Journal Article, Research Support, Non-U.S. Gov't, Validation Study)

Topics

• Equipment Failure Analysis
• Feasibility Studies
• Female
• Gamma Cameras
• Humans
• Male
• Middle Aged
• Radionuclide Imaging (instrumentation, methods)
• Reproducibility of Results
• Semiconductors
• Sensitivity and Specificity
• Stroke Volume
• Transducers
• Ventricular Dysfunction, Left (diagnosis, diagnostic imaging)