FDA Investigates the Safety of Brain Perfusion CT

FDA investigates the safety of brain perfusion CT.

Brain CT perfusion in stroke in progression.

acute CT brain scan revealed subtle hypodensity of the left MCA territory with narrowing of the proximal MCA on CT angiography ( fig. 1 a). Due to symptom regression during the next 30 min and the unknown time of symptom onset, aspirin was given but not thrombolysis. The next morning she had minimal dysphasia and central facial paresis only (NIHSS score 2). However, her symptoms were fluctuatin...

CLINICAL REPORT BRAIN CT Perfusion for Confirmation of Brain Death

SUMMARY: For pronouncing brain death, unlike CTP, the 2-phase CTA gives no functional information and is limited by inadvertent delay of the second acquisition, which may give false-negative results. The purpose of our study was to compare CTP and CTA derived from the CTP data with the Dupas and Frampas criteria for confirmation of brain death. A retrospective review of CTP in 11 consecutive pa...

PATIENT SAFETY Effects of Increased Image Noise on ImageQuality and Quantitative Interpretation in Brain CT Perfusion

BACKGROUNDAND PURPOSE: There is a desire within many institutions to reduce the radiation dose in CTP examinations. The purpose of this study was to simulate dose reduction through the addition of noise in brain CT perfusion examinations and to determine the subsequent effects on quality and quantitative interpretation. MATERIALS ANDMETHODS: A total of 22 consecutive reference CTP scans were id...

Diagnosing brain death by CT perfusion and multislice CT angiography.

INTRODUCTION Although the diagnosis of brain death (BD) is usually based on clinical criteria, in sedated patients, ancillary techniques are needed. This study was designed to assess the accuracy of cerebral multislice computed tomographic angiography (CTA) and CT perfusion (CTP) in diagnosing BD. METHODS Prospective observational study in 27 BD patients. RESULTS All patients were diagnosed...