OBJECTIVES To evaluate the diagnostic value of a new photodynamic diagnosis (PDD) system using 5-aminolevulinic acid (ALA) for the diagnosis of bladder tumors. To validate whether false-positive findings caused by tangent effects in PDD can be resolved, we compared diagnostic accuracies between the new PDD system and a conventional PDD system. PATIENTS AND METHODS Among 30 transurethral bladd...

To clarify the relationship between attention deficit/hyperactivity disorder (AD/HD) and pervasive developmental disorders (PDD), we investigated the common features and differences of these disorders in neuropsychological profiles. The subjects were 4 groups of Japanese boys aged 6 to 15 years, categorized by diagnosis:AD/HD (n＝20), PDD with comorbid AD/HD (PDD＋:n＝16), PDD without comorbid AD/...

The concept of pervasive developmental disorders (PDD) and autism spectrum disorders (ASD) closely resemble each other. Both ICD-10 and DSM-IV use the term PDD. The authors surveyed the perception of PDD/ASD and attitudes toward terminology. The subjects of this study were 205 medical/social-welfare professionals working in fields relating to developmental disorders. Questionnaires were mailed ...

BACKGROUND Previously, investigators suggested that diagnostic substitution from other diagnoses, e.g., mental retardation (MR) and/or cerebral palsy (CP) to pervasive developmental disorder (PDD) is a driving factor behind increases in autism. This study evaluated potential diagnostic substitution among subjects diagnosed with PDD vs. MR or CP by examining birth characteristic overlap. METHO...

BACKGROUND/AIMS Parkinson's disease dementia (PDD) is common, but its neuropathological basis has been controversial. The aim of this review was to survey the recent literature on the pathology of PDD and compare the pathology of PDD to that of Alzheimer's disease (AD). METHODS A literature search was performed to identify relevant research published since 2001. RESULTS There is widespread ...

OBJECTIVES Photodynamic diagnosis (PDD) with hexaminolevulinate has been recently used to improve detection of non-muscle invasive bladder cancer. Our main purpose was to quantify the benefit of PDD vs. conventional white light cystoscopy (WL) in our area. MATERIAL AND METHODS Fluorescence-guided cystoscopy using hexaminolevulinate was performed at the time of the transurethral resection (TUR...

The Parallel Diagonal Dominant (PDD) algorithm is an eecient tridiagonal solver. In this paper, a detailed study of the PDD algorithm is given. First the PDD algorithm is extended to solve periodic tridiagonal systems and its scalability is studied. Then the reduced PDD algorithm, which has a smaller operation count than that of the conventional sequential algorithm for many applications, is pr...