Ultra-widefield versus conventional angiography in a postvitrectomy, partially gas-filled eye

Besides current development of the new diagnostic procedures conventional angiography still represents the golden standard in the diagnosing of intracranial aneurysms. Since it gives a two-dimensional image if the presentation of the third dimension is wanted it is necessary to apply appropriate algorithm structures and computers. In this study we show our experience in the application of space reconstruction of blood vessels and aneurysms of the vertebrobasilary confluence in 6 patients operated at the Institute for Neurosurgery, Clinical Center of Serbia. Intraoperative finding in all patients matched the finding that we got by space reconstruction of the blood vessels, which was possible to observe from different angles. Postoperative course in all patients was satisfying. Upon discharge the patients were without rough lateralization of the pyramidal system. Our initial results and their practical agreement with the interoperative finding give us right to recommend this method as the standard for the preoperative diagnostic protocol.

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Comparison between C-arm cone beam computed tomography and interventional angiography in transarterial chemoembolization of hepatocellular carcinoma

Egyptian Journal of Radiology and Nuclear Medicine ◽

10.1186/s43055-019-0053-4 ◽

2019 ◽

Vol 50 (1) ◽

Author(s):

Ibraheim Ahmed Diab ◽

Shaimaa Abdel-hamid Hassanein ◽

Hala Hafez Mohamed

Keyword(s):

Computed Tomography ◽

Hepatocellular Carcinoma ◽

Cone Beam Computed Tomography ◽

Vascular Anatomy ◽

Cone Beam ◽

Focal Lesion ◽

Focal Lesions ◽

Conventional Angiography ◽

Interventional Angiography ◽

Cross Sectional

Abstract Background Hepatocellular carcinoma (HCC) is the most common primary hepatic malignancy of adults. One of the established treatment procedures performed worldwide for HCC is transcatheter arterial chemoembolization (TACE). By using conventional angiography in TACE, we can detect and identify the vascular anatomy of the liver through obtaining 2D images. Recently C-arm cone beam computed tomography (CBCT) is introduced for obtaining cross-sectional and three-dimensional (3D) images for better visualization of small tumors and their feeding arteries. Results The number of detected focal lesions by angiography was 51 compared to 87 focal lesion detected by CBCT; of those, 45 and 77 were active lesions by both procedures respectively. For lesions, less than 1 cm CBCT detected 23 lesions while angiography detected only one lesion. Angiography detected 87 feeding arterial branch while cone beam CT-HA detected 130 branches to the same number of target lesion. Feeder tractability and confidence were better by CBCT. Conclusion CBCT is superior to angiography in tumor detectability, detection of lesions less than 1 cm, feeder detection, and feeder traction; however, conventional angiography and DSA are irreplaceable. Thus, combination of CBCT with angiography during TACE produces better results and less complication.

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Pulmonary arteriovenous malformation (PAVM) embolization: prediction of angiographically-confirmed recanalization according to PAVM Diameter changes on CT

CVIR Endovascular ◽

10.1186/s42155-021-00207-9 ◽

2021 ◽

Vol 4 (1) ◽

Author(s):

Jihoon Hong ◽

Sang Yub Lee ◽

Jung Guen Cha ◽

Jae-Kwang Lim ◽

Jongmin Park ◽

...

Keyword(s):

Arteriovenous Malformation ◽

Case Series ◽

Pulmonary Angiography ◽

Endovascular Embolization ◽

Pulmonary Arteriovenous Malformation ◽

Conventional Angiography ◽

Receiver Operating Characteristic Curves ◽

Vein Diameter ◽

Diameter Reduction

Abstract Background To assess pulmonary arteriovenous malformation (PAVM) recanalization after embolization based on PAVM diameter changes on computed tomography (CT), with pulmonary angiography used as a gold standard. Methods A retrospective review was done of patients from 2008 to 2019 with a PAVM treated with endovascular embolization. The treatment outcome was determined by conventional angiography. Follow-up pulmonary angiography was performed when recanalization was suspected on CT, or embolization of all lesions in multiple PAVM patients could not be completed in a single session. Patients who had no preprocedural or follow-up CT were excluded. Draining vein, feeding artery, and venous sac diameter were measured on CT, and diameter reduction rates were compared with the widely-used, binary 70 % criteria. Results Forty-one patients with 114 PAVMs were treated during the study period. Eight patients with 50 PAVMs met the inclusion criteria. Mean vein, artery, and venous sac diameter reduction rates were as follows: 59.2 ± 9.3 %, 47.5 ± 10.6 %, and 62.6 ± 13.2 %, respectively, in the occluded group and 5.4 ± 19.5 %, 11.3 ± 17.7 %, and 26.8 ± 14.2 %, respectively, in the recanalized group. The area under the receiver operating characteristic curves for PAVM recanalization for the draining vein was 1.00, showing a better result than the artery (0.97) and sac (0.99). Patients showed > 42 % draining vein diameter reduction in the occluded group and < 32 % in the recanalized group. The widely-used 70 % criteria showed low specificity for predicting recanalization (draining vein, 7.3 %; venous sac, 41.7 %) but 100 % sensitivity for both the draining vein and venous sac. Conclusions The widely-used 70 % binary criteria showed limited performance in predicting outcomes in this angiographically-confirmed case series. Further investigations are warranted to establish a strategy for detecting recanalization after PAVM embolization.

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Circle of Willis: evaluation with spiral CT angiography, MR angiography, and conventional angiography.

Radiology ◽

10.1148/radiology.195.2.7724764 ◽

1995 ◽

Vol 195 (2) ◽

pp. 445-449 ◽

Cited By ~ 126

Author(s):

D A Katz ◽

M P Marks ◽

S A Napel ◽

P M Bracci ◽

S L Roberts

Keyword(s):

Ct Angiography ◽

Mr Angiography ◽

Spiral Ct ◽

Circle Of Willis ◽

Conventional Angiography ◽

Spiral Ct Angiography

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Peripheral arterial occlusive disease: Prospective comparison of MR angiography and color duplex US with conventional angiography

Journal of Vascular Surgery ◽

10.1016/0741-5214(92)90217-v ◽

1992 ◽

Vol 15 (3) ◽

pp. 593-594

Author(s):

William D. Turnipseed

Keyword(s):

Peripheral Arterial Occlusive Disease ◽

Mr Angiography ◽

Arterial Occlusive Disease ◽

Occlusive Disease ◽

Conventional Angiography ◽

Prospective Comparison ◽

Peripheral Arterial

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Planning abdominal aortic aneurysm repair: CT versus MR versus conventional angiography

Academic Radiology ◽

10.1016/s1076-6332(97)80323-6 ◽

1997 ◽

Vol 4 (12) ◽

pp. 849

Author(s):

Geoffrey D. Rubin ◽

Fred Frank ◽

R. Brooke Jeffrey ◽

Christopher F. Beaulieu ◽

Robert J. Herfkens ◽

...

Keyword(s):

Abdominal Aortic Aneurysm ◽

Aortic Aneurysm ◽

Abdominal Aortic Aneurysm Repair ◽

Conventional Angiography ◽

Abdominal Aortic ◽

Aneurysm Repair ◽

Aortic Aneurysm Repair

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Claudication due to adventitial cystic degeneration: A differential diagnosis of peripheral artery disease

Vascular ◽

10.1177/17085381211068723 ◽

2022 ◽

pp. 170853812110687

Author(s):

M Tayeh ◽

P Galkin ◽

P Majd

Keyword(s):

Risk Factors ◽

Multislice Ct ◽

External Iliac Artery ◽

Limb Ischemia ◽

Long Term Results ◽

Cystic Degeneration ◽

Conventional Angiography ◽

First Case ◽

Arterial Insufficiency ◽

Artery Disease

Background Cystic adventitial disease (CAD) is an important and rare non-atherosclerotic cause of intermittent claudication and critical limb ischemia. Since the first case of CAD involving the external iliac artery was described by Atkins and Key in 1947, approximately 300 additional cases have been reported. Objectives The aim of this article is to report a rare vascular disorder, predominantly seen in young healthy men with minimal cardiovascular risk factors. Methods We report a rare case of cystic adventitial disease of a young policeman. To confirm the diagnosis, an ultrasonography and a conventional angiography were performed. The therapeutic approach was surgical first. Results The procedure was successful without any complication, and the patient was discharged to home 4 days after procedure. Conclusion While CAD is rare, the diagnosis should be suspected in a young patient who presents with arterial insufficiency and no risk factors for atherosclerosis. Catheter angiography is the investigation of choice in the absence of multislice CT and good MRA. It seems that the treatment that assures the best long-term results is reconstructive arterial bypass surgery.

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Abstract TP37: Cervical Vascular Findings and Clinical Correlates in Takayasu Arteritis

Stroke ◽

10.1161/str.47.suppl_1.tp37 ◽

2016 ◽

Vol 47 (suppl_1) ◽

Author(s):

Bree Chancellor ◽

Gibran Shaikh ◽

Adam Davis ◽

Pam Rosenthal ◽

Koto Ishida

Keyword(s):

Takayasu Arteritis ◽

Common Finding ◽

Wall Thickening ◽

Collateral Flow ◽

Conventional Angiography ◽

Neurologic Symptoms ◽

Clinical Correlates ◽

American College Of Rheumatology ◽

Vessel Stenosis ◽

Symptom Exacerbation

Though luminal changes in Takayasu arteritis (TA) are well seen with conventional angiography, mural changes can be best seen with CTA. Cervical vasculature is affected in over 75% of patients. Cervical vessel findings on CTA and clinical correlates have not been fully described. Methods: Thirteen patients with TA were identified by ICD-9 diagnosis code at two urban hospitals. Diagnosis was confirmed based on American College of Rheumatology criteria for TA. Results: Of 4 male, 9 female (mean age, 37; 5 Latin Am.; 3 Asian; 3 African; 2 North Am.) patients, 10 (77%) had dedicated cervical imaging (CTA/MRA). Ten had neurologic symptoms; visual (46%); weakness/numbness (31%); syncope/dizziness (23%). Nine (69%) had active disease at time of imaging. Twelve (92%) had cervical vessel lesions; 11 (85%) with wall thickening; 11 with vessel stenosis. On average 3 vessels were affected, most commonly L subclavian (69%), L common carotid (54%). Of the 6 patients (46%) with occlusions, all had collateral flow; in 4, wall enhancement, intimal vessel hyperplasia was seen. Three patients imaged before aorto-carotid bypass grafting had an average of 7 diseased cervical vessels. All had strokes soon after bypass, two ischemic with hemorrhagic conversion, a third with IPH/IVH. Two patients had cerebrovascular symptom exacerbation during menses; one was successfully treated with hysterectomy. Findings on cervical imaging directly changed surgical or medical management in 9 (77%) cases. Conclusion: Cervical vessel involvement is pervasive in TA. Wall thickening, a common finding in early and active TA, is not part of current diagnostic criteria and may warrant inclusion. Given the prevalence of cervical vessel disease and its clinical implications, cervical vascular imaging should be considered in all TA patients, particularly those with neurologic symptoms. Combining chest/cervical CTA into a single protocol may be beneficial.

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Abstract W P37: Accuracy Of CT Angiography In The Localization Of Carotid Occlusion Sites In Acute Ischemic Stroke

Stroke ◽

10.1161/str.46.suppl_1.wp37 ◽

2015 ◽

Vol 46 (suppl_1) ◽

Author(s):

Marcelo Rocha ◽

William T Delfyett ◽

Amin Aghaebrahim ◽

Ashutosh Jadhav ◽

Tudor Jovin

Keyword(s):

Ischemic Stroke ◽

Acute Ischemic Stroke ◽

Ct Angiography ◽

Target Lesion ◽

Carotid Occlusion ◽

Conventional Angiography ◽

Vessel Occlusion ◽

Cerebral Vessel ◽

Ct Angiogram ◽

Comprehensive Stroke Center

Background and Purpose: CT angiography yields rapid detection of a major cerebral vessel occlusion during the evaluation of patients with acute ischemic stroke leading to its widespread use in rapidly triaging for IA trial enrollment. In such trials, patients who have an extracranial carotid occlusion in tandem to the intracranial target lesion are typically excluded. However, ICA terminus occlusions may be misidentified as cervical carotid occlusions on CTA. The goal of this study is to determine the accuracy of CTA in identifying ICA terminus occlusions from tandem carotid occlusions (cervical and intracranial segments). Methods: Retrospective review of a prospectively maintained database containing patients treated at our comprehensive stroke center between 1996 and 2014 in whom catheter angiogram and CT angiogram were available on PACS. A Neuroradiologist, blinded to catheter angiographic results reviewed the CT angiography identifying the presence of intracranial stenoses and concomitant cervical carotid occlusions. Results: Of 196 patients presenting with intracranial carotid occlusions on catheter based angiogram, 101 patients were identified with good quality CT angiography and subsequent catheter angiograms. Mean ages for identified patients was 65 +/- 14, of which 52% women and 48% men. Forty-four percent of patients had an ASPECT score of 9-10. The overall rate of agreement between retrospective CTA and conventional angiography readings was 77%. Of 72 isolated intracranial occlusions on conventional angiography, CT angiography misidentified 23 cervical carotid occlusions. The sensitivity of CTA for detecting isolated carotid terminus occlusion was 68% in this cohort. Specific factors associated with CT and catheter based angiographic discrepancy are reviewed. Conclusions: The study raises systematic considerations for maximizing inclusion of patients with target arterial occlusions who are most likely to benefit from intra-arterial therapy in future clinical trials. Future steps will include determination of specificity, predictive value of CTA for localization of specific carotid occlusion sites. Clinical variables associated with lower CTA accuracy will also be examined.

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