Abstract
The authors carried out experimental and clinical studies of left ventricular volume measurement using equilibrium-gated blood pool scan. Using phantoms, we experimentally obtained a regression equation between radioisotope levels and camera counts. From this equation, we deduced a regression equation between camera counts and volumes, which was then used for calculation of left ventricular volumes using count technique. In an experiment using phantom with various volumes, we obtained a favorable result that the average absolute error between the true and measured volumes was as small as 6.8%. In 11 patients, we calculated the left ventricular volume and ejection fraction employing the regression equation and compared the calculated values with the values obtained by cinemascopy. This comparison disclosed an excellent correlation (r = 0.955 for end-diastolic volume, 0.997 for end-systolic volume and 0.853 for ejection fraction). Mean absolute error was 16.2% for end-diastolic volume and 16.0% for end-systolic volume. These results indicate that this technique is clinically applicable.
| Original language | English |
|---|---|
| Pages (from-to) | 512-518 |
| Number of pages | 7 |
| Journal | Radioisotopes |
| Volume | 36 |
| Issue number | 10 |
| Publication status | Published - Oct 1987 |
Fingerprint
ASJC Scopus subject areas
- Radiation
Cite this
Studies of left ventricular volume estimation from gated blood pool scan with the use of regression equations. / Hiraki, Y.; Yanagi, H.; Nagaya, I.; Shimizu, M.; Joja, I.; Aono, K.
In: Radioisotopes, Vol. 36, No. 10, 10.1987, p. 512-518.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Studies of left ventricular volume estimation from gated blood pool scan with the use of regression equations.
AU - Hiraki, Y.
AU - Yanagi, H.
AU - Nagaya, I.
AU - Shimizu, M.
AU - Joja, I.
AU - Aono, K.
PY - 1987/10
Y1 - 1987/10
N2 - The authors carried out experimental and clinical studies of left ventricular volume measurement using equilibrium-gated blood pool scan. Using phantoms, we experimentally obtained a regression equation between radioisotope levels and camera counts. From this equation, we deduced a regression equation between camera counts and volumes, which was then used for calculation of left ventricular volumes using count technique. In an experiment using phantom with various volumes, we obtained a favorable result that the average absolute error between the true and measured volumes was as small as 6.8%. In 11 patients, we calculated the left ventricular volume and ejection fraction employing the regression equation and compared the calculated values with the values obtained by cinemascopy. This comparison disclosed an excellent correlation (r = 0.955 for end-diastolic volume, 0.997 for end-systolic volume and 0.853 for ejection fraction). Mean absolute error was 16.2% for end-diastolic volume and 16.0% for end-systolic volume. These results indicate that this technique is clinically applicable.
AB - The authors carried out experimental and clinical studies of left ventricular volume measurement using equilibrium-gated blood pool scan. Using phantoms, we experimentally obtained a regression equation between radioisotope levels and camera counts. From this equation, we deduced a regression equation between camera counts and volumes, which was then used for calculation of left ventricular volumes using count technique. In an experiment using phantom with various volumes, we obtained a favorable result that the average absolute error between the true and measured volumes was as small as 6.8%. In 11 patients, we calculated the left ventricular volume and ejection fraction employing the regression equation and compared the calculated values with the values obtained by cinemascopy. This comparison disclosed an excellent correlation (r = 0.955 for end-diastolic volume, 0.997 for end-systolic volume and 0.853 for ejection fraction). Mean absolute error was 16.2% for end-diastolic volume and 16.0% for end-systolic volume. These results indicate that this technique is clinically applicable.
UR - http://www.scopus.com/inward/record.url?scp=0023432478&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023432478&partnerID=8YFLogxK
M3 - Article
VL - 36
SP - 512
EP - 518
JO - Radioisotopes
JF - Radioisotopes
SN - 0033-8303
IS - 10
ER -