Comparisonof99m Tc‐Technegas SPECTwith133Xedynamic SPECTin pulmonaryemphysema .Ann Nucl Med,1997,11:201‐.Anevaluationof Technegasasaventilationagentcomp‐81minthescinti graphicdiagnosisofpulmonaryembol Eur JNucl Med,1992,19:770‐.Distributionofinhaled99m‐te ......