View clinical trials related to Perfusion.
Filter by:In this study, gastrointestinal anastomoses are examined with imaging Photoplethysmography and after this the investigators use the Standard Routine ICG-Imaging. At the end, both methods will be compared.
Blood perfusion insufficiency and hypoxia are the main causes of drug resistance to chemotherapy in breast cancer. Increasing blood perfusion can improve drug delivery. The cavitation effect of ultrasound-stimulated microbubbles (USMBs) is known to enhance tumor blood perfusion, so we conducted a prospective human study to investigate the effects of USMBs on hemoperfusion in invasive breast cancer (IBC).
To date, intraoperative assessment of tissue and bone viability is predominantly subjective, depending on the clinical view of the surgeon, resulting in a variation in the thoroughness of debridement. Inadequate initial resection leads to multiple debridement interventions, leading to prolonged hospitalization or readmission with consequently high direct medical costs. Near-Infrared Fluorescence (NIRF) imaging with Indocyanine Green (ICG) could potentially be a relevant contribution to adequately treating soft tissue and skeletal injuries by creating an improved distinction between viable and non-viable tissue, based on perfusion indices. This study evaluates whether intraoperative perfusion assessment with ICG fluorescence imaging is a feasible and quantifiable technique for treating traumatic injuries.
The objective of the study is to assess brain tissue perfusion by contrast-enhanced ultrasound perfusion imaging (PerCEUS) in acute brain injuries. More precisely, it aims : - to evaluate the heterogeneity of brain perfusion and thus diagnose brain tissue hypoperfusion with contrast-enhanced ultrasound. - to correlate contrast-enhanced ultrasound with perfusion measurements by usual multimodal monitoring.
In this study, gastrointestinal anastomoses are examined with a hyperspectral camera and after this the investigators use the Standard Routine ICG-Imaging. At the end, both methods will be compared..
The perfusion of microvascular free flaps is inevitable for completion of reconstruction in the head and neck area. In some patients microvascular anastomosis is impossible because of arteriosclerotic changes, different oncological interventions, and consecutive vessel depletion at the neck. The aim of the project is to establish an innovative system for extracorporeal perfusion of microvascular free flaps after ingrowth of new vessels from the wound bed have taken place. Afterwards, no further perfusion of the vascular pedicle is required for free flaps to survive and provide functional and aesthetic reconstruction.
The investigators will evaluate the determinants of cerebral impairment in patients with non-ischemic heart failure compared to controls, and its relation to cognitive function. They hypothesize that patients with heart failure have impaired brain perfusion and hemodynamic factors are associated with cognitive dysfunction.