The impact of simulated motion blur on lesion detection performance in full-field digital mammography.

Objective: Motion blur is a known phenomenon in full-field digital mammography, but the impact on lesion detection is unknown. This is the first study to investigate detection performance with varying magnitudes of simulated motion blur.

Methods: 7 observers (15 ± 5 years' reporting experience) evaluated 248 cases (62 containing malignant masses, 62 containing malignant microcalcifications and 124 normal cases) for 3 conditions: no blurring (0 mm) and 2 magnitudes of simulated blurring (0.

Medical image fusion scheme using complex contourlet transform based on PCA.

We present an efficient method for the fusion of medical captured images using different modalities that enhances the original images and combines the complementary information of the various modalities. The contourlet transform has mainly been employed as a fusion technique for images obtained from equal or different modalities. The limitation of directional information of dual-tree complex wavelet (DT-CWT) is rectified in dual-tree complex contourlet transform (DT-CCT) by incorporating directional filter banks (DFB) into the DT-CWT.

Effect of Zinc Supplementation on Morbidity due to Acute Diarrhoea in Infants and Children in Sanaa, Yemen: A randomized controlled double blind clinical trial.

Objectives: To study the impact of zinc administration on the morbidity and mortality attributed to diarrhoea among children less than 5 years old.

Methods: The study design was a randomized double blinded controlled clinical trial, held at Elsabeen Hospital for Maternity and Childhood, Sana'a, Yemen. The study was conducted during the period September 2005 to October 2006 on 180 children less than 5 years old with acute diarrhoeal episodes.