In some embodiments, a method includes introducing a catheter device into a target artery within a patient where the target artery is near a tumor. The catheter device includes a distal occlusion member and a proximal occlusion member spaced apart from the distal occlusion member. The distal occlusion member is positioned relative to the proximal occlusion member such that an isolated region of the target artery is defined between the distal occlusion member and the proximal occlusion member causing cessation of blood flow in the isolated region. A contrast agent is injected into the target artery and travels to at least one feeder vessel leading to the tumor. A target region in the patient, including the target artery and the tumor, is imaged and a tumor feeder vessel is identified within an image based on the contrast agent visible within the tumor feeder vessel within the image.
