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MRI and CT
Perfusion Analysis
The content on this page is intended to healthcare professionals and equivalents.
Perfusion Analysis
Perfusion analysis allows imaging of grasping blood-flow abnormalities such as brain infarction, stenosis and occlusion of the main artery in their early stages compared to a plain CT image. Particularly, perfusion study is expected to aid in the diagnosis of lesions caused by acute brain infarction promptly. In addition, an effective postoperative follow-up can be done.
Easy Cerebral Blood Flow Analysis Using CT
Examinations are made by carrying out dynamic scans of specified head sections while applying a bolus injection of an iodized contrast medium. By analyzing the time-density curve of the scanned images, information on the dynamic cerebral blood flow such as Cerebral Blood Flow (CBF), Cerebral Blood Volume (CBV) and Mean Transit Time (MTT) can be acquired.
Exposure Dose Reduction
The perfusion examination with conventional CT was made with a high radiation dose by continuous dynamic scanning. With the improvement of analysis algorithms and the development of the nonlinear noise reduction filter (Adaptive Filter), the CT perfusion scan can be done with a 50-100mA, 1-sec intermittent dynamic scan.
Easy Calculation of Left/Right Differential
With central axis setting on a cerebral CT image, perfusion analysis function automatically sets the ROIs and calculate the average values of the left/right ROI and the left/right differential. The shape (round or rectangular), number and size of ROIs are also selectable.
User-friendly Report Functions
The reporting function of Perfusion Analysis allows arrangement of functional images and the results of ROI settings in a short time using automatic input of analysis items and pre-registered doctor’s comments by a simple operation. It is possible also to export the analytical images with the DICOM format and BMP format in color.
Analysis Results
Perfusion Analysis creates the following functional images from contrast-enhanced brain CT image.
- Regional Cerebral Blood Flow (CBF)
- The flow per minute per brain tissue unit weight (100g)[mL/100g/minute]
- Regional Cerebral Blood Volume (CBV)
- Blood vessel volume per brain
- Tissue unit weight (100g) [mL/100g]
- Regional Mean Transit Time (MTT)
- Time required for a circulation in the brain tissue [sec]
Operating environment
- Applicable equipment
- Whole-body X-ray CT system SCENARIA and Hyper Q-Net S
- Whole-body X-ray CT system Supria and Hyper Q-Net R
- Report printing
- Internet Explorer (IE)
- Refer to the product specification for the IE version.
- Unable to print on the CT console.
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