Three‐dimensional angiography using rotational digital subtraction angiography: usefulness in transarterial embolization of hepatic tumors

2004 ◽  
Vol 45 (6) ◽  
pp. 602-607 ◽  
Author(s):  
N. Tanigawa ◽  
A. Komemushi ◽  
H. Kojima ◽  
S. Kariya ◽  
S. Sawada
Keyword(s):  
Digital Subtraction Angiography ◽  
Transarterial Embolization ◽  
Three Dimensional ◽  
Digital Subtraction ◽  
Hepatic Tumors ◽  
Rotational Digital Subtraction Angiography

Pre-Embolization Study of Ruptured Cerebral Aneurysms with Helical CT

1999 ◽  
Vol 5 (1_suppl) ◽  
pp. 219-223 ◽  
Author(s):  
M. Nomura ◽  
S. Kida ◽  
N. Uchiyama ◽  
T. Yamashima ◽  
J. Yamashita ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Ct Angiography ◽  
Three Dimensional ◽  
Cerebral Aneurysms ◽  
Helical Ct ◽  
Digital Subtraction ◽  
Ruptured Aneurysms ◽  
Aneurysmal Neck ◽  
Anatomical Information ◽  
Rotational Digital Subtraction Angiography

Sixteen ruptured aneurysms in 16 patients considered endovascular embolizations were examined. The findings of axial source images (axial images) and reconstructed three-dimensional CT angiography (3D-CTA) of helical CT were compared to those of rotational digital subtraction angiography (DSA). The aneurysmal neck and arterial branches adjacent to the neck were closely investigated. In seven out of 16 cases (43.8%), information provided by axial images and/or 3D-CTA was more useful than that of rotational DSA in evaluating the aneurysmal neck and arterial branches. Helical CT can provide valuable information on ruptured aneurysms that cannot be obtained by rotational DSA in some patients. This technique is useful to obtain anatomical information about aneurysms and to select the best therapeutic method.

scholarly journals Application of low injection rate and low contrast agent dose in three-dimensional rotational digital subtraction angiography of the intracranial aneurysm

2016 ◽  
Vol 22 (3) ◽  
pp. 287-292 ◽  
Author(s):  
Zhimei Gao ◽  
Yongming Zeng ◽  
Jingkun Sun ◽  
Jingjie Yang ◽  
Yang Zhou ◽  
...  
Keyword(s):  
Intracranial Aneurysm ◽  
Contrast Agent ◽  
Digital Subtraction Angiography ◽  
Three Dimensional ◽  
Noise Signal ◽  
Injection Rate ◽  
Digital Subtraction ◽  
Low Contrast ◽  
Noise Ratio ◽  
Rotational Digital Subtraction Angiography

Objective The objective of this article is to explore the feasibility of low injection rate and low contrast agent dose in three-dimensional rotational digital subtraction angiography (3D DSA) of the intracranial aneurysm. Materials and methods Fifty-one patients with suspected intracranial aneurysms were included. The catheter tip was kept within the internal carotid artery at the epistropheus level. Patients were divided into three groups randomly according to injection rate: group A (1.5 ml/s, n = 18), group B (2.0 ml/s, n = 18), and group C (3.0 ml/s, n = 15). The noise, signal-to-noise ratio (SNR), and carrier-to-noise ratio (CNR) of C2, C6, M1, and A1 segments were calculated. The continuous subtraction images and reconstructed images were evaluated by two technicians. Results No significant differences were found in noise between groups A and B, and groups A and C. Significant differences were found in the SNR and CNR of M1 and A1 segments between groups A and B, and groups B and C, but for C2 and C6 segments, they were not significant. Significant differences were found in the SNR and CNR of all segments between groups A and C. Significant differences were found in the contrast agent dose between all three groups. No significant differences were found in scores evaluated by two physicians between the three groups. Conclusion The personalized injection protocol of low injection rate and low contrast agent dose in 3D DSA of the intracranial aneurysm is feasible. The application of this protocol can reduce the dose of iodine and obtain satisfactory images.

Amended Intraoperative Neuronavigation: Three-Dimensional Vascular Roadmapping with Selective Rotational Digital Subtraction Angiography

2020 ◽  
Vol 135 ◽  
pp. 183-187
Author(s):  
Jorn Fierstra ◽  
Javier Anon ◽  
Itai Mendelowitsch ◽  
Javier Fandino ◽  
Michael Diepers ◽  
...  
Keyword(s):  
Digital Subtraction Angiography ◽  
Three Dimensional ◽  
Digital Subtraction ◽  
Rotational Digital Subtraction Angiography

scholarly journals Value of Three-Dimensional Digital Subtraction Angiography for Detection and Classification of Intracranial Aneurysm Remnants After Clipping

2021 ◽  
Author(s):  
Serge Marbacher ◽  
Matthias Halter ◽  
Deborah R Vogt ◽  
Jenny C Kienzler ◽  
Christian T J Magyar ◽  
...  
Keyword(s):  
Intracranial Aneurysm ◽  
Digital Subtraction Angiography ◽  
Diagnostic Yield ◽  
Three Dimensional ◽  
P Value ◽  
Digital Subtraction ◽  
Patient Demographics ◽  
Included Patient ◽  
2D And 3D

Abstract BACKGROUND The current gold standard for evaluation of the surgical result after intracranial aneurysm (IA) clipping is two-dimensional (2D) digital subtraction angiography (DSA). While there is growing evidence that postoperative 3D-DSA is superior to 2D-DSA, there is a lack of data on intraoperative comparison. OBJECTIVE To compare the diagnostic yield of detection of IA remnants in intra- and postoperative 3D-DSA, categorize the remnants based on 3D-DSA findings, and examine associations between missed 2D-DSA remnants and IA characteristics. METHODS We evaluated 232 clipped IAs that were examined with intraoperative or postoperative 3D-DSA. Variables analyzed included patient demographics, IA and remnant distinguishing characteristics, and 2D- and 3D-DSA findings. Maximal IA remnant size detected by 3D-DSA was measured using a 3-point scale of 2-mm increments. RESULTS Although 3D-DSA detected all clipped IA remnants, 2D-DSA missed 30.4% (7 of 23) and 38.9% (14 of 36) clipped IA remnants in intraoperative and postoperative imaging, respectively (95% CI: 30 [ 12, 49] %; P-value .023 and 39 [23, 55] %; P-value = <.001), and more often missed grade 1 (< 2 mm) clipped remnants (odds ratio [95% CI]: 4.3 [1.6, 12.7], P-value .005). CONCLUSION Compared with 2D-DSA, 3D-DSA achieves a better diagnostic yield in the evaluation of clipped IA. Our proposed method to grade 3D-DSA remnants proved to be simple and practical. Especially small IA remnants have a high risk to be missed in 2D-DSA. We advocate routine use of either intraoperative or postoperative 3D-DSA as a baseline for lifelong follow-up of clipped IA.

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