Conditions: Myocardial Perfusion Imaging Magnetic Resonance Imaging
Keywords: Cardiac MRI gadobutrol
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 232
Healthy volunteers: no

Brief summary:
The object of this study is to compare four different dosages of Gadavist 1.0 in cardiac Magnetic Resonance Tomography (MRT) imaging with the imaging results of a cardiac SPECT examination in terms of diagnostic quality.

For this purpose Gadavist dosages of 0.01 mmol/kg, 0.025 mmol/kg, 0.05 mmol/kg or 0.1mmol/kg body weight are administered. A study participant receives the respective dose twice i.e. at rest and at stress using Adenosine (which puts circulation into a state of stress similar to that of physical exercise). The time between both injections is 10-15 min.

The total imaging time is about 45 min.

Detailed description:

Arms:
arm 1: Participants received 1 i.v. bolus injections of Gadobutrol 0.01 mmol/kg body weight (BW) (0.01mL/kg) for stress magnetic resonance imaging (MRI) via a power injector at a rate of 3 mL/s. The second i.v. bolus injection of Gadobutrol 0.01 mmol/kg BW was given after a 10-15 minutes wash-out period of the stressor for the rest MRI. arm 2: Participants received 1 i.v. bolus injections of Gadobutrol 0.025 mmol/kg BW (0.01mL/kg) for stress MRI via a power injector at a rate of 3 mL/s. The second i.v. bolus injection of Gadobutrol 0.025 mmol/kg BW was given after a 10-15 minutes wash-out period of the stressor for the rest MRI. arm 3: Participants received 1 i.v. bolus injections of Gadobutrol 0.05 mmol/kg BW (0.01mL/kg) for stress MRI via a power injector at a rate of 3 mL/s. The second i.v. bolus injection of Gadobutrol 0.05 mmol/kg BW was given after a 10-15 minutes wash-out period of the stressor for the rest MRI. arm 4: Participants received 1 i.v. bolus injections of Gadobutrol 0.1 mmol/kg BW (0.01mL/kg) for stress MRI via a power injector at a rate of 3 mL/s. The second i.v. bolus injection of Gadobutrol 0.1 mmol/kg BW was given after a 10-15 minutes wash-out period of the stressor for the rest MRI.

Interventions: intervention 1: Gadobutrol (Gadavist,Gadovist, BAY86-4875) intervention 2: Gadobutrol (Gadavist,Gadovist, BAY86-4875) intervention 3: Gadobutrol (Gadavist,Gadovist, BAY86-4875) intervention 4: Gadobutrol (Gadavist,Gadovist, BAY86-4875)
Intervention descriptions: intervention 1: 0.01 mmol/kg BW (0.01 mL/kg) for stress MRI and 0.01 mmol/kg BW (0.01 mL/kg) for rest MRI (total dose 0.02 mmol/kg) intervention 2: 0.025 mmol/kg BW (0.025 mL/kg) for stress MRI and 0.025 mmol/kg BW (0.025 mL/kg) for rest MRI (total dose 0.05 mmol/kg) intervention 3: 0.05 mmol/kg BW (0.05 mL/kg) for stress MRI and 0.05 mmol/kg BW (0.05 mL/kg) for rest MRI (total dose 0.1 mmol/kg) intervention 4: 0.1 mmol/kg BW (0.1 mL/kg) for stress MRI and 0.1 mmol/kg BW (0.1 mL/kg) for rest MRI (total dose 0.2 mmol/kg)

Protocol document: