[The clinical application of rotational stereo digital angiography to the field of neurosurgery].
A new system for 3-dimensional angiography, named "Rotational stereo digital angiography" (RSDA), was applied to 36 patients with neurosurgical lesions. This system consists of a new rotating X-ray apparatus and a digital processor, and accumulates 144 projectional images in 2.2 seconds during a 180 degree transverse rotation of the X-ray device. These images are digitally processed and displayed on two CRT's at 5 different degrees so that a rotating image of the angiogram is observed. Thirteen cerebral aneurysms, 16 brain and skull tumors, and 7 other neurosurgical lesions were examined with this system and compared with conventional angiography. The aneurysms were examined to 1) identify the aneurysm, 2) demonstrate the shape of the aneurysm, 3) demonstrate the aneurysmal neck, and 4) illustrate the relationship between the aneurysm and the mother vessels. The tumors were examined to 1) demonstrate the tumor stain, 2) identify the feeding arteries, 3) identify the draining veins, and 4) illustrate the relationship between the lesion and the major vessels. Similarly, 1) demonstration of the lesion, and 2) illustration of the relationship between the lesion and the major vessels were examined for other lesions. The findings in RSDA and conventional angiography were classified into -, +/-, +, or +2 with regard to the readiness to the aspects described above. They were then statistically compared. According to the statistic analysis, RSDA is significantly more illustrative for aneurysms than conventional angiography. For tumors and for other lesions, there was no significant difference between RSDA and conventional angiography. These results indicate the usefulness of RDSA in the field of neurosurgery.
Kominami
S
S
Department of Neurosurgery, Nippon Medical School, Tokyo, Japan.
D001932:Brain Neoplasms / Q000000981:diagnostic imaging*; D002533:Cerebral Angiography / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement