[Angiography].

Hitoshi Tanigawa; Toshi Abe; Masaru Hirohata; Shinobu Nakamura; Naofumi Hayabuchi

Home/Archive/PubMed

PubMed · 15106337

[Angiography].

Hitoshi Tanigawa·Toshi Abe·Masaru Hirohata·Shinobu Nakamura·Naofumi Hayabuchi

View original source ↗Export metadata ↓

Abstract

The clinical usefulness of three dimensional images was widely recognized. The three dimensional digital subtraction angiography (3D-DSA) well demonstrated anatomical structures of cerebral arteries with high special resolution. This 3D observation allowed high quality planning for aneurysmal coil packing and neck clipping. Because of the bony structure and curvy arterial anatomy in the skull base region, 3D-CTA and MRA was sometimes distureved the demonstration of the anatomical relationship adjacent to the aneurysm. However, 3D-DSA not only demonstrated arterial anatomy, but also analyzed of vascular structure, quantifiably. And it was useful in radiation dose reduction by reduction of DSA exposure number. We believe that 3D-DSA should provided useful information for planning of surgical and endovascular treatment in the field of cerebro-vascular disease.

Explore related subjects

Angiography, Digital Subtraction Calibration Cerebral Angiography Cerebrovascular Disorders Humans Image Processing, Computer-Assisted Imaging, Three-Dimensional Radiography, Interventional Sensitivity and Specificity Journal Article Review

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

Hitoshi Tanigawa, Toshi Abe, Masaru Hirohata, Shinobu Nakamura, Naofumi Hayabuchi. 2004. [Angiography].. https://pubmed.ncbi.nlm.nih.gov/15106337/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2006

Accuracy of angiography and Doppler ultrasonography in the detection of carotid stenosis: a histopathological study of 123 cases.

BACKGROUND: A prospective study was performed comparing the accuracy of digital subtraction angiography (DSA) and Doppler ultrasonography (DUS) stenosis findings with measurements on histological specimens. METHOD: DSA and DUS were used to evaluate carotid stenosis and were compared with measurements on histological specimens. Intact carotid plaques from 123 cases were removed in one piece during surgery. The specimens were histologically processed and examined in transverse sections. The smallest inner and correlating outer diameters were measured and the extent of stenosis was calculated. Carotid artery stenoses were compared and statistics done. Specimens in symptomatic cases were divided into 3 groups: stenosis 30-49% (Group 1), stenosis 50-69% (Group 2) and stenosis 70-99% (Group 3). Specimens in asymptomatic cases were divided into two groups: stenosis or=60% (Group B). FINDINGS: Wilcoxon paired tests revealed significant differences between DSA, DUS and measurements on histological specimens. In severe stenoses only, no significant difference was observed between stenosis measurement according to the European Carotid Surgery Trial (ECST) angiography methodology and measurements on histological specimens. The most pronounced differences were found between angiography methodology of the North American Symptomatic Carotid Endarterectomy Trial (NASCET) and measurements on histological specimens. When investigating how often preoperative measurement classified stenosis into the same Group of stenoses as postoperative measurement, DUS was the most accurate diagnostic tool. CONCLUSIONS: This study confirmed our previous results, i.e., angiography underestimates the degree of carotid artery stenosis. DUS seems to be more accurate in classifying stenoses into different groups to the extent of narrowing of the carotid arteries. These results make the position of angiography in diagnostic algorithm of carotid stenoses investigations even more questionable.

Angiography, Digital Subtraction↗

PubMed2006

Traumatic bilateral vertebral artery dissection at the dural entry point site in a 10-year-old boy.

We present a 10-year-old boy who was admitted with headache and neurological symptoms after a trauma in the school yard. Cerebral MRI revealed an extensive ischaemia in the bilateral cerebellar hemispheres, left middle cerebellar peduncle, and right vermis. Digital subtraction angiography demonstrated bilateral vertebral artery dissections at the dural entry point site. This case emphasises the management of patients with traumatic vertebral artery dissection.

Angiography, Digital Subtraction↗

PubMed2006

Performance of the K-edge digital subtraction angiography imaging system at the European synchrotron radiation facility.

In this work we have characterised the K-edge digital subtraction angiography imaging system at the European Synchrotron Radiation Facility (ESRF, Grenoble, France). With this technique, after the minimally invasive intravenous injection of a contrast agent (iodine), two images are recorded simultaneously using monochromatic beams with energies bracketing the iodine K-edge. The image receptor consists of a two-line 432-pixel germanium detector. The logarithmic subtraction of the image set produced results in an iodine-enhanced image, where vessels are clearly visualised and contrast agent concentration can be precisely quantified. We have studied the imaging system in terms of the modulation transfer function, which was measured at the patient position, the 2-D normalised noise power spectrum, calculated for both raw and processed data, and the frequency-dependent detective quantum efficiency, which was calculated directly for final images. In addition, images of cylindrical phantoms with different concentrations of iodine, were also acquired.

Angiography, Digital Subtraction↗