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A novel approach toward construction of robots is based on a concentric combination of precurved elastic tubes. By rotation and extension of the tubes with respect to each other, their curvatures interact elastically to position and orient the robot's tip, as well as to control the robot's shape along its length. In this approach, the flexible tubes(More)
A recent approach to steerable needle design is based on combining pre-curved tubes concentrically. By rotating and extending the tubes with respect to each other, the position and orientation of the needle tip, as well as the shape of the inserted length, can be controlled. Prior models neglected torsional twisting in the curved portions of the tubes. This(More)
BACKGROUND/AIMS The present study is the first to prospectively compare a group of recreational Ecstasy users when dance clubbing on 3,4-methylenedioxymethamphetamine (MDMA) and when clubbing during abstinence from Ecstasy/MDMA. METHODS Twelve normal healthy volunteers (mean age = 23.2 years) were assessed at a Saturday night dance club under(More)
The authors report on the development of a manual for treating adolescents with anorexia nervosa modeled on a family-based intervention originating at the Maudsley Hospital in London. The manual provides the first detailed account of a clinical approach shown to be consistently efficacious in randomized clinical trials for this disorder. Manualized family(More)
Concentric tube robots are a subset of continuum robots constructed by combining pre-curved elastic tubes. As the tubes are rotated and translated with respect to each other, their curvatures interact elastically, enabling control of the robot's tip configuration as well as the curvature along its length. This technology is projected to be useful in many(More)
OBJECTIVE The aim of this multicenter outpatient study was to assess the therapeutic benefits, response patterns, and safety of sertraline in adolescent major depressive disorder (MDD). METHOD Fifty-three adolescent outpatients with MDD were treated in an open-label, 10-week, acute-phase trial with sertraline and, if responders, for an additional 12-week(More)
Concentric tube robots are a novel continuum robot technology that is well suited to minimally invasive surgeries inside small body cavities such as the heart. These robots are constructed of concentrically combined pre-curved elastic tubes to form 3D curves. Each telescopic section of the robot is either of fixed or variable curvature. One advantage of(More)
Surgical robots are gaining favor in part due to their capacity to reach remote locations within the body. Continuum robots are especially well suited for accessing deep spaces such as cerebral ventricles within the brain. Due to the entry point constraints and complicated structure, current techniques do not allow surgeons to access the full volume of the(More)
OBJECTIVE The authors' goal was to review current published literature on the psychiatric hospitalization of adolescents with a diagnosis of conduct disorder. METHODS The English-language literature from 1980 to 1991 cited in the MEDLINE database was searched using the key words conduct disorder, adolescent psychiatric hospitalization, psychiatric(More)
OBJECTIVE To critically review the research in juvenile anorexia nervosa and bulimia nervosa over the past 10 years and highlight recent advances in normal development as it pertains to these disorders and their diagnosis, prevention, and treatment. METHOD Computerized search methods were combined with manual searches of the literature. A detailed review(More)