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Diagnostic difficulties occur in pulmonary embolism (PE) during visual analysis of ventilation-perfusion images in matched defects or in chronic obstructive lung disease (COPD). In 44 patients with angiographically confirmed PE and in 40 patients with COPD, the regional ventilation-perfusion ratios (V/Q) were therefore computed using krypton-81m for each perfusion defect, and were displayed in a functional image. In patients with PE and mismatched defects, a high V/Q (1.96) was observed. A V/Q greater than 1.25 was also found in nine of 11 patients having PE and indeterminate studies (studies with perfusion abnormalities matched by radiographic abnormalities). COPD was characterized by matched defects and low V/Q. The percentage of patients correctly classified as having PE or COPD increased from 56% when considering the match or mismatched character to 88% when based on a V/Q of 1.25 in the region of the perfusion defect. This quantitative analysis, therefore, seems useful in classifying patients with scintigraphic suspicion of PE.
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
September 1984,
Journal of nuclear medicine : official publication, Society of Nuclear Medicine,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
March 1985,
Radiology,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
May 1985,
Journal of nuclear medicine : official publication, Society of Nuclear Medicine,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
March 2001,
Journal of nuclear medicine : official publication, Society of Nuclear Medicine,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
November 1983,
Kaku igaku. The Japanese journal of nuclear medicine,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
May 1979,
Nihon Igaku Hoshasen Gakkai zasshi. Nippon acta radiologica,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
January 1980,
Bulletin europeen de physiopathologie respiratoire,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
March 1982,
Clinical nuclear medicine,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
December 1985,
Nihon Kyobu Shikkan Gakkai zasshi,
M Meignan, and
G Simonneau, and
L Oliveira, and
A Harf, and
L Cinotti, and
J F Cavellier, and
P Duroux, and
J C Ansquer, and
P Galle
January 1981,
European journal of nuclear medicine,
