Subjects with PDD excel on certain visuo-spatial tasks, amongst which visual search tasks, and this has been attributed to enhanced perceptual discrimination. However, an alternative explanation is that subjects with PDD show a different, more effective search strategy. The present study aimed to test both hypotheses, by measuring eye movements during visual search tasks in high functioning adu...

In their article published in this issue of The Journal of Nuclear Medicine (1), Hillner and coauthors once again emerge from the trove of data that is the National Oncologic PET Registry (NOPR) with valuable insights. This time, the investigators turned their attention to 7 cancers, plus a hodgepodge of rare tumors, for which Medicare still does not cover the use of PET for restaging or suspec...

AIMS The aim of this study was to compare the design of the generic OptiStem XTR femoral stem with the established Exeter femoral stem. MATERIALS AND METHODS We obtained five boxed, as manufactured, implants of both designs at random (ten in total). Two examiners were blinded to the implant design and independently measured the mass, volume, trunnion surface topography, trunnion roughness, tr...

In the radiotherapy treatment planning of a lesion located in the head region with small field radiation beams, the heterogeneity corrections play an important role. In this work, we investigated the influence of a bony heterogeneity on dose profile inside a soft tissue phantom containing a bony material. PDD curves were obtained by simulation using the Monte Carlo code EGSnrc and employing Ecl...

AIM The aim of the paper is to examine the relation between the increase of the photon dose in water in the region of electronic disequilibrium - so-called build-up region - and the distance of the bolus from the water surface for the applied parameters of X-ray beams. MATERIALS AND METHODS PDD measurements were carried out using the plane-parallel ionization chamber Markus in the automatic w...

Autosomal dominant inheritance of a type of peripheral dysostosis occurred in a family with diaphyseal aclasis. The features of their type of peripheral dysostosis were short limbed short stature, normal intelligence, very stubby fingers, flat face and nose, shortened metacarpals and terminal phalanges, thickened beaten-copper skull vault, and advanced skeletal maturation.

OBJECTIVE To assess hallucinations in Parkinson's disease (PD), we developed a novel practical rating scale that evaluates five items including variety, frequency, and severity of hallucinations, caregiver burden levels, and psychiatric status at nighttime. METHODS Forty-one PD patients and their caregivers were examined regarding the status of the hallucinations associated with PD. RESULTS...

A 15 year old boy, with known diaphyseal aclasis, presented with a swollen left leg. The diagnosis of popliteal pseudoaneurysm, a known and well understood vascular complication, was delayed due to presentation suggestive of a chondrosarcoma. In this age group, sarcomatous change is more common and a potentially sinister complication of diaphyseal aclasis. Following a sarcoma MDT referral, the ...

The relationship between malic acid production and carbon assimilation was examined in the submerged aquatic Crassulacean acid metabolism (CAM) plant, Isoetes howellii Engelmann. Under natural conditions free-CO(2) level in the water was highest at 0600 hours and (14)CO(2) assimilation rates in I. howellii were also highest at this time. After 0900 hours there was a similar pattern in (a) rate ...

OBJECTIVES The aim of this study was to estimate a benchmark dose (BMD) for chromosome damage induced by vinyl chloride monomer (VCM) in VCM-exposed workers in central China and validate the published results in Shanghai. METHODS VCM-exposed workers who had been exposed to VCM for at least one year (n=463) and matched subjects not exposed to VCM or other toxins (n=273) were asked to participa...