Abstract |
Radionuclide cardiac studies lend themselves
exceptionally well to functional imaging. This is
especially true for gated blood pool scan (GBP). Making
functional images is also possible in radionuclide
angiocardiography (RNAC). In this study we tried to
validate the functional images obtained from RNAC by
comparing it with GBP. Twenty three patients (16
patients with coranary artery diseases, 5 with
hypertensive heart diseases, and 2 with nonspecific
chest pains) underwent simultaneous RNAC and GBP at the
sarne position (LAO 45). From both studies, global
ejection fraction, regional ejection fraction, phase
image, amplitude image, stroke image, paradox image,
maximum ejection and maximum filling rates were
obtained. Global ejection fraction are almost same in
both studies. Regional ejection f#ractions of apex and
inferior portion af left ventricle calculated frorn
RNAC are well correlated with those of GBP. Phase and
paradox image, maximum ejection and maximum filling
rates were obtained. Global ejection iraction are
almost same in both studies. Regional ejection
fractions of apex and inferior portion of left
ventricle calculated from RNAC are well correlated with
those of GBP. Phase and paradox images of RNAC are very
similar to those of GBP. However, amplitude and stroke
images are different. Regional ejection fractions of
the left ventricular base, rnaximum ejection and
maximum filling rates obtained from RNAC are
significantly different from those of GBP. In
conclusion, albeit all of functiona! images of RNAC is
not same as (BP, regionai wall motions and global left
ventricular function are expected to be successfully
analyzed by phase and paradox image and ejection
fraction. |