SOFT WARE UTILITIES OF SPIRAL CT SCAN OF THE CHEST IN STAGING LUNG CANCER.
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Aim: To clarify the utilization of spiral CT scan of the chest, using its soft ware capbilities, by comparing thick lOmm and thin 1 mm CT sections, together with 3D images, in staging of lung cancer. Patients & methods: The study included 40 patients, with lung cancers, who their spiral acquisition CT chest scans, were retrospectively evaluated, comparing thick lOmm & thin section 1 mm CT scans, & utilize 3 D images for staging of lung cancer. Results : by using thick section 10 mm SACT chest scans, 10 patients classified as stage IA, ten patients as IB, no cases as stage HA, 4 patients as IIB, 2 patients as stage MA, 8 patients as MB and 6 patients as IV. While in using thin sections I mm, SACT chest, no cases as stage IA, IB, HA, IIB, 12 cases stage HIA, 22 patients as IIIB, and 6 patients as stage IV. 3D surface images of 40 patients, showed 6 cases with pleural puckering, 10 cases with pleural invasion, chest wall invasion in three cases, positive relation to the main bronchus in 18 cases, better lesion simulation in 34 cases, change of the lung cancer stage, as cases were considered as (Ti or T2) on axial cuts with re-classification as (T3 or T4) on 3D, images in 12 cases. Conclusion: Spiral CT scan of the chest with its soft ware facilities, including Thin sections lmm reconstructed SACT & 3D, showing a significant change from an early to advanced stages when the cases were re-classiified by thin 1mm sections, improving the TNM factors, in better assessment of tumor relation to the surroundings, detect more pulmonary nodules, depict more hilar & mediastinal lymph nodes involvements, and provides useful information that resulted in diagnosis & staging of lung cancer, than thick section lOmm SACT.