[Regional pulmonary Xenon-133 washout study using dynamic SPECT images obtained by a triple-headed SPECT system].
We investigated preliminary the clinical utility of dynamic SPECT in studying pulmonary Xenon-133 gas washout, using the continuous repetitive rotating acquisition method with a triple-headed SPECT system. The subjects included one healthy volunteer and 16 various lung diseases. After obtaining the equilibrium images, the sequential washout images were acquired every 60 sec for 6 min. As the ventilation index, the real half-time of regional activity was evaluated. With or without abnormalities on chest CT, these images allowed us to show effectively the three-dimensional distribution of ventilation abnormalities, such as peripheral or segmental air trapping.
Suga
K
K
Department of Radiology, Yamaguchi University, School of Medicine.
Nishigauchi
K
K
Matsumoto
T
T
Kume
N
N
Uchisako
H
H
Matsunaga
N
N
D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging* / Q000378:metabolism; D008171:Lung Diseases / Q000000981:diagnostic imaging / Q000378:metabolism; D015899:Tomography, Emission-Computed, Single-Photon / Q000295:instrumentation* / Q000379:methods; D014980:Xenon Radioisotopes / Q000493:pharmacokinetics
D014980:Xenon Radioisotopes