Real-time imaging of anti-biofilm effects using CP-OCT.

The objective of this study was to develop a method to reliably and reproducibly assess the physical properties of in vitro multi-species plaque derived biofilms. A custom flow cell (FC) was designed to model oral cavity shear stresses on biofilms grown on hydroxyapatite (HA) discs. A finite-element program (ANSYS 13) modeled flow velocities and wall shear stresses on the interior 3D dimensions.

Gastric emptying: a comparison of three methods.

Objective: A better understanding of the clinical relevance of delayed gastric emptying (e.g. in diabetes) requires a simple, easily accessible and inexpensive method for measuring it.

[Cranial diabetes insipidus in Wegener's granulomatosis].

We describe three cases of cranial diabetes insipidus (CDI) caused by Wegener's granulomatosis (WG). Panhypopituitarism was the presenting symptom in one patient. Magnetic resonance imaging (MRI) showed enlargement of the pituitary gland with an intrasellar mass lesion and absence of posterior pituitary lobe hyperintensity.

[Somatostatin receptor scintigraphy].

Somatostatin receptor scintigraphy (SRS) is a very valuable imaging technique for visualisation of a diversity of neuroendocrine tumours. The sensitivity for localisation of carcinoid tumours is high, but somewhat lower for other neuroendocrine tumours. The methodology, multiple clinical aspects and limitations of the examination are described.

Arterial concentration of 99mTc-sestamibi at rest, during peak exercise and after dipyridamole infusion.

Tracers for myocardial perfusion imaging during stress should not only have high cardiac uptake but they should also have a fast blood clearance to prevent myocardial tracer uptake after the ischaemic stimulus. The present study characterize the early phase of the arterial (99m)Tc-sestamibi (MIBI) time-activity curve after venous bolus injection at rest, during peak exercise and after dipyridamole infusion. We included 11 patients undergoing angioplasty for one-vessel disease (rest study) and 20 patients evaluated for the detection of haemodynamic significant coronary stenoses by (99m)Tc-sestamibi single photon emission computed tomography (SPECT) using either bicycle exercise testing (10 patients) or standard dipyridamole testing (10 patients).

[Adrenal scintigraphy].

Adrenal scintigraphy is a functional imaging technique for evaluation of adrenal gland hyperfunction. In this review the methodology and multiple applications of the examination are described. The role of scintigraphy in the light of the relatively high radiation dose to the patient is defined and compared with other imaging modalities.