Development of CT-like Imaging Function for BRANSIST safire Angiography System VC17

The main aim of CT-like imaging is, by allowing 3D information to be obtained during IVR treatment without moving the patient, to help increase the safety of examinations and treatments and improve therapeutic efficacy. 3D-angiography is another technique that allows 3D information to be reconstructed from rotational images obtained with a C-arm. It is mainly used, however, to visualize blood vessels illuminated with contrast medium, whereas CT-like imaging offers much greater low-contrast resolution, making it possible to visualize tumor stains. Because of this characteristic, CT-like imaging is mainly used for the following two applications: 1) The identification of feeding vessels in the execution of chemotherapy for a tumor and the determination of the appropriate amount of drugs for chemotherapy to be used from the size of the affected area. 2) Evaluation of efficacy and checking for bleeding after IVR treatment. Patients used to be moved to the CT room during IVR treatment for the above reasons. With CT-like imaging, the risk of this movement is avoided and information can be obtained quickly. An IVR-CT system has the same functions, but both in terms of cost and operation, CT-like imaging attains superior cost-effectiveness. Fig. 1 shows a clinical image obtained with this system using CT-like imaging during arterial portography. A defect of contrast medium in the liver tumor can be seen clearly.