Keywords:
Pulmonary vessels, Thorax, Computer applications, Digital radiography, Fluoroscopy, Computer Applications-General, Perception image, Embolism / Thrombosis
Authors:
R. Tanaka, S. Sanada, M. Oda, M. Suzuki, K. Sakuta, H. Kawashima, H. Iida; Kanazawa/JP
DOI:
10.1594/ecr2013/C-0279
Results
Visualization of blood cirulation: In all normal controls,
the pixel values measured in atrium,
lung area,
and aortic arch increased in the systole phase and decreased in the diastole phase,
reflecting changes in normal circulation [12-15].
Whereas,
the pixel values measured in the ventricles changed in reverse,
i.e.,
decreased in the systole phase and increased in the diastole phase (Figure 7).
In addition,
the resulting blood circulation map showed a left-right symmetric distribution decreasing from the hilar region to the peripheral region of the lung,
and no defective part was observed (Figure 7).
Statistical analysis: There was significant difference between the changes in pixel values measured in the hilar region and those measured in the peripheral region of the lung (P<0.05).
However,
there were no significant differences among those measured in symmetrical positions at each lung area.
Clinical evaluation: Many abnormal cases showed a nonuniform distribution on the blood circulation map,
which were different from the normal pattern.
These findings were confirmed on the perfusion scintigrams (Figures 8 and 9).