The validity of a regression-based procedure for detecting concealed psychopathology in structured personality assessment.

Positive Impression Management (PIM) predicted scoring of the Personality Assessment Inventory (PAI; Morey, 2007) is a regression-based procedure designed to inform diagnostic hypotheses when respondents engage in positive response distortion (PRD). Observed scores that deviate above the PIM-predicted score are proposed to indicate areas of true psychopathology that are being concealed by the respondent. To test this proposition, the PAI was administered twice to 334 undergraduate students, using standard instructions and job applicant role-play instructions.

Delivery and assessment of endovascular stents to repair aortic coarctation using MR and X-ray imaging.

Purpose: To investigate the utility of MR and X-ray imaging for characterizing aortic coarctation and flow, and guiding the endovascular catheter to place a stent to repair the coarctation.

Materials And Methods: The descending aorta in eight dogs was looped with elastic band and tightened distal to the subclavian artery. Balanced fast field echo (bFFE) and velocity-encoded cine (VEC) MRI sequences were used for device tracking and measuring aortic flow.

Endovascular interventional MRI.

MR guidance has been used recently to navigate endovascular catheters and deliver stents in large (aorta and pulmonary) and small (coronary, renal, and femoral) arteries, place ASD closure devices, deliver pulmonary valve stents, guide cardiac RF ablations, and perform intramyocardial injections. However, MR visualization of a stent lumen is still a problem and requires more attention. Because of technical limitations and safety concerns associated with the prototype devices used, limited numbers of clinical studies have been performed.

MRI in guiding and assessing intramyocardial therapy.

Cardiovascular intervention, using MRI guidance, is challenging for clinical applications. Real-time imaging sequences with high spatial resolution are needed for monitoring intramyocardial delivery of drug, gene, or stem cell therapies. New generation MR scanners make local intramyocardial and vascular wall therapies feasible.

Limited diagnostic agreement of quantitative sonography of the radius and phalanges with dual-energy x-ray absorptiometry of the spine, femur, and radius for diagnosis of osteoporosis.

Objective: The aim of our study was to evaluate the diagnostic agreement of quantitative sonography of the radius and proximal phalanx and dual-energy X-ray absorptiometry (DXA) of the radius, lumbar spine, and femoral neck for the detection of osteoporosis.

Materials And Methods: In 95 women (mean age, 53 +/- 13 years) and 26 men (mean age, 53 +/- 13 years), DXA measurements of the lumbar spine (posterior-anterior, L1-L4) and the femoral neck, as well as quantitative sonography of the radius and proximal phalanx of the third finger were obtained. The percentage of patients below a given threshold was calculated for each imaging technique.