Disease relevance of Angiography, Digital Subtraction

• PURPOSE: To prospectively compare gadolinium-enhanced magnetic resonance (MR) angiography and computed tomographic (CT) angiography with digital subtraction angiography (DSA) for use in detecting atheromatous stenosis and plaque morphology at the carotid bifurcation [1].
• Are gadolinium-based contrast media really safer than iodinated media for digital subtraction angiography in patients with azotemia [2]?
• MATERIALS AND METHODS: Fifteen patients underwent gadolinium-enhanced MR angiography for evaluation of lower extremity peripheral vascular disease after conventional digital subtraction angiography (DSA) [3].
• Evaluation of abdominal aortic aneurysm for stent-graft placement: comparison of gadolinium-enhanced MR angiography versus helical CT angiography and digital subtraction angiography [4].
• Relationship between staining by digital subtraction angiography and vascularity in breast cancer: analysis of the time-density curve and the results of staining for factor VIII-related antigen/von Willebrand factor [5].

High impact information on Angiography, Digital Subtraction

• Transvenous digital subtraction angiography was used before surgery to evaluate seven patients with chemical evidence of hyperparathyroidism [6].
• Quantification of absolute luminal diameter by computer-analyzed digital subtraction angiography: an assessment in human coronary arteries [7].
• Diagnosis and follow-up of small hepatocellular carcinoma with selective intraarterial digital subtraction angiography [8].
• Digital subtraction angiography was performed with bolus injection of radiopaque contrast material (30 cc at 20 cc/s) into the inferior vena cava [9].
• METHODS: In 24 cases with aneurysmal SAH, rCBF studies by single-photon emission CT and digital subtraction angiography (DSA) were performed on the same day between 5 and 7 days after SAH and/or within 4 hours after the onset of delayed ischemic neurological deficits [10].

Chemical compound and disease context of Angiography, Digital Subtraction

• Azotemia: gadopentetate dimeglumine as contrast agent at digital subtraction angiography [11].
• PURPOSE: To experimentally evaluate gadolinium (Gd)-, carbon dioxide (CO(2))-, and iodixanol-enhanced digital subtraction angiography (DSA) versus histomorphometry in the assessment of renal artery stenosis [12].
• Of 12 patients in whom the stenoses were >50% of luminal surface on intraarterial digital subtraction angiography, eight were unilateral and four bilateral [13].
• Particular care has to be taken in the use of angiography techniques because of the invasiveness and of the potential toxicity of radiopaque contrast material, even in the less invasive radiological tests, like endovenous sequential angiourography with image subtraction (SAU) and digital subtraction angiography (DSA) [14].
• Double blind comparison of Iomeprol 350 and Iopamidol 340 in intravenous digital subtraction angiography for peripheral vascular disease [15].

Biological context of Angiography, Digital Subtraction

• Traditional screening tests such as intravenous pyelography, intravenous digital subtraction angiography, radionuclide scintirenography, and measurement of the peripheral venous plasma renin activity have limited accuracy for diagnosing renal artery stenosis and do not accurately predict the blood pressure response to revascularization [16].

Anatomical context of Angiography, Digital Subtraction

• METHODS: TOF MRA at 1.5 T, IVUS, and selective digital subtraction angiography were performed on 31 extracranial carotid arteries of 27 patients (mean age, 52 years; age range, 17 to 75 years) undergoing neuroendovascular interventions [17].
• Improved endovascular treatment of spinal AVMs is now possible with the use of calibrated particles of polyvinyl alcohol, serial digital subtraction angiography, and temporary balloon occlusion of the vertebral artery in cervical AVMs supplied by a pedicle arising from the vertebral artery [18].
• The role of radiology in screening and diagnosis is discussed with special attention to renal vein sampling for renin assay (RVR) and digital subtraction angiography (DSA) [19].
• METHOD: Sixteen patients with suspected carotid atherosclerotic disease prospectively underwent digital subtraction angiography of the aortic arch followed by contrast-enhanced MRA using a 3D fast imaging with steady-state precession (FISP) technique (TR = 5 ms, TE = 2 ms, flip angle = 30 degrees) [20].
• The celiac trunk, portal vein and their branches were reconstructed by volume rendering (VR), multiplanar volume reconstruction (MPVR) and maximum intensity projection (MIP) technique, and the results were compared with digital subtraction angiography (DSA) [21].

Associations of Angiography, Digital Subtraction with chemical compounds

• Digital subtraction angiography with a gadolinium chelate as contrast medium can provide images of suitable quality for diagnosis and intervention [22].
• Forty patients were examined with intra-arterial digital subtraction angiography (DSA) using meglumine iothalamate (202 mg iodine/ml) or CO2 as a contrast medium [23].
• The diagnosis of scimitar syndrome was confirmed with digital subtraction angiography [24].
• Results of MR angiography with 0.1 mmol/kg and 0.3 mmol/kg doses of gadodiamide were compared with those of digital subtraction angiography (DSA) and according to dose [25].
• PATIENT: A 43-year-old man who developed a left occipital infarct after taking a total of 23 sumatriptan succinate tablets (25 mg per tablet) and 32 Midrin tablets during a 7-day period and who on digital subtraction angiography was shown to have segmental cerebral arterial narrowing in multiple vessels [26].

Gene context of Angiography, Digital Subtraction

• The mean time between the initiation of i.v. tPA therapy and the initiation of intra-arterial urokinase (i.a. UK) was 117+/-25.0 min [time to i.v. tPA 137+/-32 min; time to digital subtraction angiography (DSA) 221+/-42 min; time to i.a. UK 260+/-46 min] [27].
• To evaluate the efficacy of arterial digital subtraction angiography (DSA), 28 patients with a variety of hepatic lesions underwent intra-arterial DSA immediately following conventional celiac or hepatic arteriography [28].
• Hepatic angiography (digital subtraction angiography; DSA and ultrasound angiography with intraarterial CO2 microbubbles; USAG) was performed before treatment in all cases, and the vascularity of the tumor was clinically evaluated [29].
• Eighteen patients who had elevated serum calcium and parathormone levels were prospectively studied with intravenous digital subtraction angiography (DSA) [30].
• RESULTS: ROC curve analyses for all three operators showed similar diagnostic performance for digital pulmonary angiography and CFA, with one operator showing better performance with digital subtraction angiography than with CFA (P = .04) [31].

Analytical, diagnostic and therapeutic context of Angiography, Digital Subtraction

• Selective hepatic intraarterial digital subtraction angiography (DSA), ultrasonographic angiography with carbon dioxide microbubbles (USAG), and computed tomography during arterial portography (CTAP) were performed to evaluate the hemodynamics of hepatic nodules [32].
• Eighteen patients with 22 hepatocellular carcinoma (HCC) lesions less than 2 cm in diameter were examined with conventional angiography, digital subtraction angiography (DSA), and computed tomography (CT) after intraarterial injection of iodized oil (Lipiodol CT) [33].
• In a double-blind study of neurologic patients, the safety and efficacy of Hexabrix was compared with Renografin-76 in intravenous digital subtraction angiography [34].
• Double-blind, randomized clinical trials have established the efficacy, safety, and tolerance of iopromide for excretory urography, coronary angiography, routine and digital subtraction angiography, and phlebography [35].
• A combination of digital subtraction angiography and a gadolinium contrast agent, however, provided us with good-quality images both before and after balloon angioplasty without any associated complications [36].

References