The accurate @entity2 and the determination of its stage remain significant clinical problems. @entity419 PET has been shown to improve detection and staging of @entity2 and to prevent unnecessary invasive procedures. Positron imaging with dual-head gamma cameras may not be as sensitive as PET, but recent studies have shown good results with these cameras. METHODS: In the present study, we investigated 100 @entity1 , 76 of whom were male and 24 female (mean age +/- SD, 60.7 +/- 9.4 y), with suspected @entity1149 . @entity419 scanning was performed using a dual-head coincidence camera 1 h after the intravenous injection of 185 MBq of @entity419 . For 46 @entity1 , attenuation correction was also performed. Two independent observers unaware of clinical status analyzed all imaging studies. TNM classification was assigned after surgical staging. RESULTS: In 44 @entity1 with clinically suspected @entity153 , no evidence of @entity5 was found. However, in 56 @entity1 a @entity2 was demonstrated. At interobserver analysis, a kappa value of 0.94 (P < 0.0001) was found for detection of the @entity5 and a kappa value of 0.63 (P < 0.0001) was found for mediastinal staging. A sensitivity of 96%, a specificity of 93%, and an accuracy of 95% were found for detection of @entity2 . Assessment of lymph node involvement showed a sensitivity of 50%, a specificity of 92%, and an accuracy of 77%. The sensitivity of CT in assessing lymph node involvement was 36%, the specificity was 86%, and the accuracy was 67%. Attenuation correction provided more anatomic information, but no differences were seen between attenuation-corrected and non-attenuation-corrected images for detecting lesions or lymph node involvement. CONCLUSION: The present study confirms earlier data showing that @entity419 scans obtained with dual-head coincidence cameras are useful in the detection of @entity1149 and less suitable for staging of lymph node involvement, with accuracy comparable to that of CT.

Use of a dual-head coincidence camera and XXXX for detection and nodal staging of @entity1149 : accuracy as determined by 2 independent observers.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity419 :: ('MESH:D019788', 'Chemical') :: ['(18)F-FDG'] @entity5 :: ('MESH:D009369', 'Disease') :: ['primary tumor', 'malignancy'] @entity1149 :: ('MESH:D002289', 'Disease') :: ['non-small cell lung cancer'] @entity2 :: ('MESH:D008175', 'Disease') :: ['pulmonary neoplasm', 'lung cancer', 'detection of lung carcinoma'] @entity153 :: ('MESH:D002283', 'Disease') :: ['bronchogenic carcinoma']
@entity419 :: (MESH:D019788,Chemical) :: ['18F-FDG']
