OBJECTIVE: To evaluate the reliability of 3-dimensional ultrasound (3D-US) for the measurement of @entity320 . DESIGN: Retrospective case series. @entity1 : Forty-two consecutive cases of @entity320 imaged with 3D-US. METHODS: Tumor measurements obtained with ophthalmoscopy, transillumination, standard ultrasound techniques, 3D-US, and pathological studies. Tumor diameters, heights, and volumes were compared. Our 3D-US @entity5 measurement techniques were tested for intraobserver and interscan reproducibility. RESULTS: Fifty 3D-US images were studied. The 3D-US @entity5 measurements were found to be reproducible (height coefficient of variation [CV] < or = 3%; diameter CV < or = 9.7%; volume CV < or = 13.2%). There was significant correlation with the usual methods of @entity5 measurement (diameter r = 0.76; height r > or = 0.98). Significant differences were found between measurements at pathological examination, as compared with both 2-dimensional and 3D-US height measurements (range, 0.73-0.83 mm). This finding was thought to be due to specimen shrinkage. Three-dimensional ultrasound was found to be at least as reproducible as clinical examination and standard ultrasound techniques used for measurement of diameter and height of @entity320 . It was our impression that the 3D-US volume measurements accounted for the geometry of the @entity5 better than volume estimates calculated from basal area and @entity5 height. CONCLUSIONS: Three-dimensional ultrasound measurements of @entity320 were reproducible, correlated well with other @entity5 measurement techniques, and can be used for measurement of @entity320 .

Three-dimensional ultrasound for the measurement of XXXX .

@entity1 :: ('9606', 'Species') :: ['PARTICIPANTS'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity320 :: ('MESH:D008545', 'Disease') :: ['choroidal melanomas', 'choroidal melanoma']
@entity320 :: (MESH:D008545,Disease) :: ['choroidal melanomas']
