Diagnosis of Internal Carotid Artery Stenosis Greater than 70% with
... BACKGROUND AND PURPOSE: Duplex sonography is an effective tool for evaluating internal carotid artery (ICA) stenosis, and power Doppler imaging has improved its value in this regard. Our goal was to elucidate which parameters, such as linear stenosis, area stenosis, and peak systolic velocity (PSV), ...
... BACKGROUND AND PURPOSE: Duplex sonography is an effective tool for evaluating internal carotid artery (ICA) stenosis, and power Doppler imaging has improved its value in this regard. Our goal was to elucidate which parameters, such as linear stenosis, area stenosis, and peak systolic velocity (PSV), ...
Guidelines for Performing Ultrasound Guided Vascular Cannulation
... structures. The vessel is then cannulated with a larger bore 16gauge or 18-gauge catheter, a guide wire is passed through it, and a larger catheter is inserted over the wire. The catheter–over–guide wire process is termed the Seldinger technique.3 Although frequently performed and an inherent part o ...
... structures. The vessel is then cannulated with a larger bore 16gauge or 18-gauge catheter, a guide wire is passed through it, and a larger catheter is inserted over the wire. The catheter–over–guide wire process is termed the Seldinger technique.3 Although frequently performed and an inherent part o ...
Guidelines for Performing Ultrasound Guided Vascular Cannulation
... structures. The vessel is then cannulated with a larger bore 16gauge or 18-gauge catheter, a guide wire is passed through it, and a larger catheter is inserted over the wire. The catheter–over–guide wire process is termed the Seldinger technique.3 Although frequently performed and an inherent part o ...
... structures. The vessel is then cannulated with a larger bore 16gauge or 18-gauge catheter, a guide wire is passed through it, and a larger catheter is inserted over the wire. The catheter–over–guide wire process is termed the Seldinger technique.3 Although frequently performed and an inherent part o ...
Three-Dimensional C-arm Cone-beam CT: Applications in the Interventional Suite
... interventions in other peripheral vascular territories. One of the most important advantages to using the detailed anatomic images from C-arm cone-beam CT over the conventional, frontal projection images from DSA is that they enable the user to “page through” C-arm cone-beam CT image sections and re ...
... interventions in other peripheral vascular territories. One of the most important advantages to using the detailed anatomic images from C-arm cone-beam CT over the conventional, frontal projection images from DSA is that they enable the user to “page through” C-arm cone-beam CT image sections and re ...
Normal Anatomy and Imaging of the Hip: Emphasis on
... as a common arthroscopic finding of shallow cartilage deficiency just above the acetabular fossa, commonly not visible by imaging, and reserve the term supra-acetabular fossa (SAF) to describe a focal area of subchondral bony deficiency at the 12 o’clock position of the acetabulum. Two types of SAF hav ...
... as a common arthroscopic finding of shallow cartilage deficiency just above the acetabular fossa, commonly not visible by imaging, and reserve the term supra-acetabular fossa (SAF) to describe a focal area of subchondral bony deficiency at the 12 o’clock position of the acetabulum. Two types of SAF hav ...
Use of Ultrasound to Guide Vascular Access Procedures
... Before site preparation for puncture, ultrasound should be used to choose the optimal site for access. The choice of site should include factors such as vessel size, depth, course, surrounding structures, and adjacent pathology (such as overlying cellulitis). The vessel should be assessed for patenc ...
... Before site preparation for puncture, ultrasound should be used to choose the optimal site for access. The choice of site should include factors such as vessel size, depth, course, surrounding structures, and adjacent pathology (such as overlying cellulitis). The vessel should be assessed for patenc ...
The Complete - Mint Medical
... Comment: Lower volumes than those recommended here should not dissuade a laboratory that is otherwise compliant from applying for accreditation. ...
... Comment: Lower volumes than those recommended here should not dissuade a laboratory that is otherwise compliant from applying for accreditation. ...
- AMS Tesi di Dottorato
... from the viewer’s eye through the image and selects the voxel with the maximum intensity as the value of the corresponding display pixel. The resulting image is displayed as a collapsed or two-dimensional representation of the maximal intensity voxels that were present in the selected data set. The ...
... from the viewer’s eye through the image and selects the voxel with the maximum intensity as the value of the corresponding display pixel. The resulting image is displayed as a collapsed or two-dimensional representation of the maximal intensity voxels that were present in the selected data set. The ...
Recommendations for Noninvasive Evaluation of Native Valvular
... LV = Left ventricle, ventricular LVEF = Left ventricular ejection fraction LVOT = Left ventricular outflow tract MR = Mitral regurgitation ...
... LV = Left ventricle, ventricular LVEF = Left ventricular ejection fraction LVOT = Left ventricular outflow tract MR = Mitral regurgitation ...
Low insertion of a cystic duct into the common bile duct as a cause
... (orthogonal as well as non-orthogonal), with isotropic resolution. On a 16-slice or higher generation MDCT, the entire hepatobiliary system can be scanned in less than a breath-hold amount of time for most patients. Hirano et al found drip infusion CT cholangiography to be very useful and comparable ...
... (orthogonal as well as non-orthogonal), with isotropic resolution. On a 16-slice or higher generation MDCT, the entire hepatobiliary system can be scanned in less than a breath-hold amount of time for most patients. Hirano et al found drip infusion CT cholangiography to be very useful and comparable ...
Imaging of the mediastinum: applications for thoracic - lacart-pa
... or multifocal masses, the presence and type of calcification (eg, rim-like calcification suggests a cystic or vascular lesion), and associated findings such as pleural involvement [9,10]. Mediastinal masses are typically rounded and well circumscribed with smooth margins. Occasionally they might be ...
... or multifocal masses, the presence and type of calcification (eg, rim-like calcification suggests a cystic or vascular lesion), and associated findings such as pleural involvement [9,10]. Mediastinal masses are typically rounded and well circumscribed with smooth margins. Occasionally they might be ...
2009 Program - Society for Magnetic Resonance
... It is with great pleasure that we welcome everyone back to Michigan State University for the 21st International Conference in MR Angiography. Since being founded by a team lead by Dr. Jim Potchen in 1989, Michigan State University has been proud to host the annual meeting on three previous occasions ...
... It is with great pleasure that we welcome everyone back to Michigan State University for the 21st International Conference in MR Angiography. Since being founded by a team lead by Dr. Jim Potchen in 1989, Michigan State University has been proud to host the annual meeting on three previous occasions ...
Echocardiography-Guided Interventions – ASE 2009
... as evaluation of a mechanical aortic valve prosthesis or critical aortic stenosis in which the valve itself cannot be crossed), and, most recently, investigational applications such as the placement of LAA occlusion devices and percutaneous mitral valve repair.34-40 Traditionally, transseptal cathet ...
... as evaluation of a mechanical aortic valve prosthesis or critical aortic stenosis in which the valve itself cannot be crossed), and, most recently, investigational applications such as the placement of LAA occlusion devices and percutaneous mitral valve repair.34-40 Traditionally, transseptal cathet ...
CAR Guidelines and Standards for Cardiac Computed Tomography
... The vast majority of studies included in the available meta-analyses are in patient groups with a high prevalence of coronary artery disease (mean prevalence of coronary disease 59% [26], 53% [42], 61% [44]. Disease prevalence has a bearing on the negative and positive predictive values of an invest ...
... The vast majority of studies included in the available meta-analyses are in patient groups with a high prevalence of coronary artery disease (mean prevalence of coronary disease 59% [26], 53% [42], 61% [44]. Disease prevalence has a bearing on the negative and positive predictive values of an invest ...
Recommendations for the imaging assessment of prosthetic heart
... The stentless valves were introduced to increase the orifice area available for flow. It was also hoped that stresses on the cusps might be lessened leading to better durability and that some stent-related complications such as valve thrombosis might be less frequent. The Ross Procedure consists of ...
... The stentless valves were introduced to increase the orifice area available for flow. It was also hoped that stresses on the cusps might be lessened leading to better durability and that some stent-related complications such as valve thrombosis might be less frequent. The Ross Procedure consists of ...
Recommendations for the imaging assessment of prosthetic heart
... The stentless valves were introduced to increase the orifice area available for flow. It was also hoped that stresses on the cusps might be lessened leading to better durability and that some stent-related complications such as valve thrombosis might be less frequent. The Ross Procedure consists of ...
... The stentless valves were introduced to increase the orifice area available for flow. It was also hoped that stresses on the cusps might be lessened leading to better durability and that some stent-related complications such as valve thrombosis might be less frequent. The Ross Procedure consists of ...
How I Do It: Evaluating Renal Masses
... CT Scanning When CT scanning is performed specifically to evaluate a known renal mass, the study must include an unenhanced examination prior to the administration of intravenous contrast material. By using a power injector, the authors routinely administer 150 mL of intravenous contrast material (7 ...
... CT Scanning When CT scanning is performed specifically to evaluate a known renal mass, the study must include an unenhanced examination prior to the administration of intravenous contrast material. By using a power injector, the authors routinely administer 150 mL of intravenous contrast material (7 ...
MDCT COMPLEMENTARY TO CORONARY ANGIOGRAPHY
... by invasive angiography can be difficult. Because of the threedimensional nature of the data set, MDCT is very well suited to detect and define the anatomic course of coronary artery anomalies and their relationship to other cardiac and non-cardiac structures • Numerous case reports and several rese ...
... by invasive angiography can be difficult. Because of the threedimensional nature of the data set, MDCT is very well suited to detect and define the anatomic course of coronary artery anomalies and their relationship to other cardiac and non-cardiac structures • Numerous case reports and several rese ...
Vascular Injury in Orthopedic Trauma
... should be a critical skill for every orthopedic surgeon. There are 5 types of vascular injury: intimal injury (flaps, disruptions, or subintimal/intramural hematomas), complete wall defects with pseudoaneurysms or hemorrhage, complete transections with hemorrhage or occlusion, arteriovenous fistulas ...
... should be a critical skill for every orthopedic surgeon. There are 5 types of vascular injury: intimal injury (flaps, disruptions, or subintimal/intramural hematomas), complete wall defects with pseudoaneurysms or hemorrhage, complete transections with hemorrhage or occlusion, arteriovenous fistulas ...
Imaging of Renal Lymphoma: Patterns of Disease with Pathologic
... hypoechoic masses, retroperitoneal tumors directly invading the kidneys, bilateral renal enlargement, and perirenal soft-tissue masses. Cystic lesions and tumors predominantly affecting the renal sinus and collecting system are uncommon. Unless the renal lesions manifest in the setting of widespread ...
... hypoechoic masses, retroperitoneal tumors directly invading the kidneys, bilateral renal enlargement, and perirenal soft-tissue masses. Cystic lesions and tumors predominantly affecting the renal sinus and collecting system are uncommon. Unless the renal lesions manifest in the setting of widespread ...
Imaging of coronary artery anomalies
... patients with coronary artery anomalies was differentiated from 93 to 100% in the current literature [6,17,21]. The rate specificity and sensitivity of MR angiography in patients that had coronary anomaly have been shown to be higher than conventional coronary angiography in studies where both imagi ...
... patients with coronary artery anomalies was differentiated from 93 to 100% in the current literature [6,17,21]. The rate specificity and sensitivity of MR angiography in patients that had coronary anomaly have been shown to be higher than conventional coronary angiography in studies where both imagi ...
A Prospective Cross-Sectional Study with 256
... With technological advances in computed tomography (CT) systems, noninvasive diagnostic capability of coronary CT angiography (CTA) for in-stent restenosis has gradually improved [1–5]. However, metallic artifacts remain a significant and specific drawback in CTA imaging of coronary stents [3]. Thes ...
... With technological advances in computed tomography (CT) systems, noninvasive diagnostic capability of coronary CT angiography (CTA) for in-stent restenosis has gradually improved [1–5]. However, metallic artifacts remain a significant and specific drawback in CTA imaging of coronary stents [3]. Thes ...
Clinical study of peroneal artery perforators with
... usage. Despite gold-standard accuracy, catheter angiography is also invasive, with potential complications including haematoma and false-aneurisms. More recently, imaging technologies have become available that can visualise cutaneous perforator vessels in addition to the major pedicles, increasing ...
... usage. Despite gold-standard accuracy, catheter angiography is also invasive, with potential complications including haematoma and false-aneurisms. More recently, imaging technologies have become available that can visualise cutaneous perforator vessels in addition to the major pedicles, increasing ...
Iodine Concentration and Optimization in Computed
... Conversely, increasing iodine concentration while keeping other parameters the same does not alter the time-to-peak enhancement, but broadens the duration of the enhancement plateau, which may provide some extra enhancement as a potential safety margin in case of suboptimal bolus timing and can be h ...
... Conversely, increasing iodine concentration while keeping other parameters the same does not alter the time-to-peak enhancement, but broadens the duration of the enhancement plateau, which may provide some extra enhancement as a potential safety margin in case of suboptimal bolus timing and can be h ...
Thieme: Abdominal Ultrasound: Step by Step
... cava. As you scan past the vena cava, the gallbladder can be identified as a “black” structure in the fasted patient. With luck, the right kidney may also be seen. As the transducer moves farther to the right, the angle of the inferior hepatic border becomes increasingly blunted (Fig. 4.4b, c). Visu ...
... cava. As you scan past the vena cava, the gallbladder can be identified as a “black” structure in the fasted patient. With luck, the right kidney may also be seen. As the transducer moves farther to the right, the angle of the inferior hepatic border becomes increasingly blunted (Fig. 4.4b, c). Visu ...
Endovascular aneurysm repair
Endovascular aneurysm repair (or endovascular aortic repair) (EVAR) is a type of endovascular surgery used to treat pathology of the aorta, most commonly an abdominal aortic aneurysm (AAA). When used to treat thoracic aortic disease, the procedure is then specifically termed TEVAR (thoracic endovascular aortic/aneurysm repair). The procedure involves the placement of an expandable stent graft within the aorta to treat aortic disease without operating directly on the aorta. In 2003, EVAR surpassed open aortic surgery as the most common technique for repair of AAA, and in 2010, EVAR accounted for 78% of all intact AAA repair in the United States.