PURPOSE: Assessment of the diagnostic value of multiplanar reformations (MPR) in multi-slice computed tomography (MSCT) by comparing relevant anatomic structures of the larynx and hypopharynx. MATERIALS AND METHODS: MSCT of the neck was performed in 69 consecutive @entity1 (including 30 laryngeal and 12 @entity189 ). From a 4 x 1.0 mm collimation data set, 3.0-mm and 1.25-mm axial slices as well as 3-mm coronal and sagittal slices were reconstructed. Using the histological examination as gold standard, sensitivity and specificity regarding @entity5 infiltration for all relevant anatomical structures of the larynx and the hypopharynx were determined for each reconstruction and compared with the McNemar test. Moreover, 42 @entity1 with laryngeal and/or @entity189 were subjectively evaluated to determine whether the respective reconstructions enables a better topographical visualization of the @entity5 in relation to surrounding structures and, furthermore, whether this has an influence on the therapeutical strategy (operation versus radiation therapy, type of operation, surgical approach). RESULTS: Sensitivities and specificities were not significantly different between the reconstructions. However, coronal and sagittal MPR provided a better topographical visualization of the @entity5 in 14 of 42 (33 %) of the @entity1 , and influenced the therapeutical strategy in 8 of 42 (19 %) of the @entity1 . A lowered signal-to-noise ratio impeded the evaluation of the relatively thin 1.25-mm axial slices in more than 23 % of the cases. CONCLUSION: Besides the 3-mm axial slices, coronal and sagittal MPR can improve the topographical visualization of @entity5 and are recommended for preoperative @entity189 . Additionally reconstructed 1.25-mm axial slices can be discarded since they do not hold a higher value compared to 3-mm axial reconstructions.

[Diagnostic impact of multiplanar reformations in multi-slice CT of laryngeal and XXXX ].

@entity1 :: ('9606', 'Species') :: ['patients'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'laryngopharyngeal tumors'] @entity189 :: ('MESH:D002277', 'Disease') :: ['MSCT of laryngeal and/or hypopharyngeal carcinomas', 'hypopharyngeal carcinomas', 'hypopharyngeal carcinoma']
@entity189 :: (MESH:D002277,Disease) :: ['hypopharyngeal carcinomas']
