Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Projective Techniques”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 55 records · Page 3Linked to original sources
PubMed2003

Defining projective techniques: finding common ground for discourse.

In 2000 Lilienfeld, Wood, and Garb defined projective tests in a traditional yet loose manner. When a more precise and exclusive definition is furnished, two classes of responses indicative of deviancy can be logically derived. It is suggested that a focused review of the literature yields consistent relations between psychopathology and two response types, falsifications and misrepresentations. This provides common ground for recognizing a circumscribed core of valid predictors across projective techniques.

Bias↗
PubMed2004

ECG-gated 23Na-MRI of the human heart using a 3D-radial projection technique with ultra-short echo times.

Pathological changes in tissue often manifest themselves in an altered sodium gradient between intra- and extracellular space due to a malfunctioning Na+-K+ pump, resulting in an increase in total sodium concentration in ischaemic regions. Therefore, 23Na-MRI has the potential to non-invasively differentiate viable from non-viable tissue by detecting concentration changes of intra- and extracellular sodium. As the in vivo sodium signal shows a bi-exponential T2 decay, with a short component of less than 1 ms, the accurate quantification of the total sodium content requires imaging techniques with ultra-short echo times (TE) below 0.5 ms. A 3D-radial projection technique has been developed which allows the acquisition of ECG-triggered sodium images of the human heart with a TE of 0.4 ms. With this pulse sequence 23Na-MRI volunteer measurements of the head or the heart were performed in less than 18 min on a 1.5-T clinical scanner with an isotropic resolution of 10 mm3. The signal to noise ratio of the radial projection technique is twofold higher than that of a Cartesian gradient echo pulse sequence (TE = 3.2 ms). Radial 23Na-MRI provides a tool for clinical studies, aiming at the differentiation of viable and non-viable tissue.

Brain↗