Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Aortography”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 37 records · Page 2Linked to original sources
PubMedDate not supplied

Prediction of aortoiliac stent graft length: comparison of a semiautomated computed tomography angiography method and calibrated aortography.

OBJECTIVE: The aim of this study is to compare multislice computed tomography (MSCT) in combination with a newly developed semiautomated software program with calibrated aortography in patients who are scheduled for endovascular aortic stent graft placement. METHODS: From November 2000 until December 2001, seven patients with an abdominal aortic aneurysm (AAA) underwent both calibrated aortography and MSCT for preoperative endovascular stent graft planning. Both studies were performed within 14 days. Further, length measurements were performed with a semiautomated computerized tomographic angiography (CTA) calibration method and a conventional calibrated aortography technique using three differently configured tubes with variable tortuosity. The AAA length measurements of the semiautomated CTA calibration method and the calibrated aortography were compared. RESULTS: Statistical analysis included linear regression analysis and revealed a probability value of 0.000381 and an r2 value of 0.93. Using phantoms, it is proven by the authors that the accuracy of the semiautomated CTA calibration method increases with increasing tortuosity when compared with the conventional calibrated aortography technique. CONCLUSIONS: Our preliminary results show that the semiautomated CTA calibration method has a potentially advantageous role in preoperative stent graft planning regarding the aortic length measurements and seems to be more accurate than calibrated aortography, especially in extremely tortuous vessels. Further studies have to be performed, however.

Aged↗
PubMed1994

Diagnosis of injuries of the aorta and brachiocephalic arteries caused by blunt chest trauma: CT vs aortography.

OBJECTIVE: The purpose of this study was to evaluate the role of chest CT in the triage of patients with potential injuries of the aorta and brachiocephalic arteries caused by blunt trauma and to test the value of chest CT scans in limiting the number of screening aortograms. SUBJECTS AND METHODS: A prospective study was done with 107 patients who were examined because of possible laceration of the aorta or brachiocephalic vessels. Chest radiographs were obtained in 107 patients, aortograms in 105, and chest CT scans in 90. This evaluation concentrates on the 88 patients who had both CT and aortography. Findings on CT scans were categorized as normal, equivocal, suggestive of, subtly positive for, or grossly positive for mediastinal hematoma. RESULTS: Findings on CT scans were considered normal in 18 patients. Sixteen had normal aortographic findings. Two of the 18 had clinical follow-up without aortography. Findings on CT scans were considered equivocal in 25 patients, suggestive of hematoma in 13, subtly positive for hematoma in 24, and grossly positive for hematoma in 10. Subsequent aortography showed injuries in four patients who had abnormal CT findings. Nineteen other patients had aortography because of grossly abnormal findings on chest radiographs, and one aortic injury was detected. CONCLUSION: The value of chest CT as a preliminary procedure to avoid thoracic aortography in patients with blunt trauma was limited in our series. Chest CT scans with normal findings effectively exclude aortic/brachiocephalic injury; however, only about 25% of our patients had chest CT scans with unequivocally normal findings, and most patients required further evaluation with aortography.

Aorta, Thoracic↗
PubMed2003

Added benefit of thoracic aortography after transarterial embolization in patients with hemoptysis.

OBJECTIVE: The purpose of this study was to examine the usefulness of thoracic aortography performed after transarterial embolization in identifying additional arteries responsible for causing hemoptysis. SUBJECTS AND METHODS: Between March 2000 and November 2001, we prospectively performed thoracic aortography after transarterial embolization in 76 patients with hemoptysis. Underlying diseases included tuberculosis (n = 34), bronchiectasis (n = 30), emphysema (n = 4), bronchitis (n = 4), aspergillosis (n = 3), and lung cancer (n = 1). Initially, angiography of bronchial and other systemic arteries possibly contributing to hemoptysis was performed with embolization. After completion of the embolization, thoracic aortography was performed, with the tip of the catheter located just distal to the origin of the left subclavian artery. RESULTS: A total of 200 arteries (52 right bronchial, 40 left bronchial, six common bronchial, 76 intercostal, 11 inferior phrenic, six thoracodorsal, eight internal mammary, and one thyrocervical) were identified either at the initial embolization or on thoracic aortography as being responsible for causing hemoptysis. Among them, 29 arteries (14.5%) that were not included on the initial selection for embolization were later identified on postembolization thoracic aortography. There were two right bronchial, three left bronchial, eight inferior phrenic, and 16 intercostal arteries. CONCLUSION: The inferior phrenic and intercostal arteries were often missed on routine transarterial embolization in patients with hemoptysis. Postembolization thoracic aortography is useful for monitoring the effectiveness of embolization and for improving the detection of arteries contributing to hemoptysis.

Adult↗
PubMed1991

Aortography in the diagnosis of traumatic aortic rupture due to blunt chest trauma. Report of thirty-six cases.

Thirty-six patients were evaluated by aortography after blunt chest trauma with a suspicion of traumatic aortic rupture (TAR). There were 16 isolated TARs at isthmus, 2 multiple injuries both of the thoracic aorta and brachiocephalic arteries and no false negative aortographies. Seventeen aortographic examinations were negative, as confirmed by clinical and radiological follow up one false positive aortography was due to a ductus diverticulum. Aortography had a sensitivity of 100%, specificity of 94.4%, and accuracy of 97.2%. No complications or deaths resulted from angiography. Aortography is a safe, accurate and rapid technique to evaluate patients with suspicion of TAR; aortography is superior to other non-invasive techniques in depicting vascular anatomy and pathology, knowledge of which is essential for surgical planning.

Adolescent↗
PubMed1987

A comparative analysis of left ventriculography and root aortography for estimating aortic annular size.

This study was undertaken to compare the usefulness of left ventriculography versus root aortography as a means of assessing the aortic annular size in 75 patients with a narrow aortic anulus. These patients were divided into two groups: Group I consisted of 57 patients undergoing standard aortic valve replacement with a 21 mm prosthesis and Group II consisted of 18 patients undergoing modified aortic valve replacement with the aid of an anulus-enlarging procedure or an apico-aortic conduit. In Group I, left ventriculography gave 23.2 +/- 1.8 mm (mean +/- standard deviation), whereas the aortography method showed 22.4 +/- 2.7 mm (p less than 0.05). Those values of 20 mm or less were regarded as imperfect measurements; inaccurate results were more frequent in the aortography method (16 cases; 28%) than in the left ventriculography method (only two cases; 3.5%), with significant difference (p less than 0.025%). In Group II, there was no significant difference in respective values determined by the two different methods; 18.7 +/- 3.0 mm, with a range from 13 to 23 mm in the left ventriculography method, and 19.9 +/- 3.1 mm, with a range from 14 to 24 mm, in the aortography method (p greater than 0.2). Imperfect measurement by the aortography method tended to occur when the cusp base was severely deformed. The results indicated that left ventriculography was more reliable than root aortography for estimating the size of the aortic anulus.

Adolescent↗
PubMed1982

Computed tomography versus aortography in diagnosis of aortic dissection.

The use of computed tomography (CT) versus aortography is evaluated in a limited study of 17 cases of aortic dissection (AD). With the constraints of the present state of the technology and lack of availability of CT scanners at some centers, aortography remains the premier and often the only diagnostic test to choose in an emergency. CT, however, may be an asset in the diagnosis of AD when: (1) atypical or misleading clinical presentations are evident that do not require aortography; (2) aortography is contraindicated in a weakened patient, when there is no emergency; (3) aortography is a risk while there is a strong suggestion of AD; (4) patency of a false channel must be confirmed. These circumstances were encountered in five patients. In addition, a localized infrarenal AD was fortuitously discovered in two patients presenting with abdominal visceral cancer. On patient follow-up, CT is less invasive and may be performed in asymptomatic patients undergoing treatment, thereby facilitating the early detection of complications. Detailed computed tomograms often yield superior diagnostic information only if the CT study includes rapid sequential scans immediately following a fast intravenous bolus of contrast material.

Aged↗
PubMedDate not supplied

Indications for aortography. Radiography after blunt chest trauma: a reassessment of the radiographic findings associated with traumatic rupture of the aorta.

Indications for aortography in truncal trauma patients have expanded as reports of radiographic findings associated with traumatic rupture of the aorta (TRA) have proliferated. By studying to what extent these findings also occurred in trauma patients without TRA, we determined the utility of these findings in selecting patients for aortography. The detection of nine radiographic findings associated with TRA was tabulated in 173 patients undergoing arch aortography to rule out TRA from 1975 to 1980. Twenty-five of these had TRA. All patients with TRA under age 65 had a widened mediastinum (WM); this was the only finding that taken alone correlated significantly with TRA (P = 0.001). Only two of six patients with TRA over 65 had a WM. Other findings such as hemothorax, fracture of ribs 1 or 2, pulmonary contusion, or multiple rib fracture were more likely to be found in patients without TRA. Formal radiographic interpretation by staff radiologists detected more radiographic abnormalities than physicians caring for the patient emergencly, who had access to a junior radiology resident. However, these physicians were as successful as staff radiologists in detecting WM when it was associated with TRA. A widened mediastinum is the best single criterion for aortography in young trauma patients; all elderly persons with severe truncal trauma should probably have aortography even in the absence of mediastinal widening. Radiologic consultation is important for complete detection of thoracic pathology in trauma patients, but in this study late interpretation of more subtle findings did not detect additional patients with TRA.

Adolescent↗
PubMed1995

Associated injuries in patients with blunt chest trauma: detection by abdominal roentgenograms after aortography.

To determine the value of abdominal roentgenograms after aortography for detecting additional organ injuries, we retrospectively evaluated the abdominal and pelvic roentgenograms after aortography of 170 trauma patients who underwent arch aortography to detect aortic rupture. In 160 (94%) of 170 patients, the results of arch studies were normal. Ten (6%) of 170 patients had aortic rupture (8 patients) or rupture of a major vessel (2 patients). Thirty-one (18%) of 170 patients had associated injuries demonstrated by the roentgenograms taken after aortography, including pelvic or femoral fractures (13%), pelvic hematomas (5.8%), renal injuries (1.1%), and bladder ruptures (2.9%). We conclude that abdominal and pelvic pain roentgenograms should be part of a routine arch aortography performed for blunt chest trauma to detect additional organ injuries that frequently accompany injuries from motor vehicle crashes.

Abdominal Injuries↗
PubMed2005

Catheter-based aortography fails to identify aortic atherosclerotic lesions detected on transesophageal echocardiography.

BACKGROUND AND PURPOSE: Transesophageal echocardiography is used to detect the aortic arch pathology during diagnostic workup of ischemic stroke events. Conventional angiography is increasingly used in diagnosing and treating atherosclerotic vascular lesions in patients with ischemic stroke. Although catheter-based aortography can be performed with cerebral angiography, there is limited information about the utility of aortography in identifying atherosclerotic abnormalities of the aortic arch. METHODS: A retrospective chart review was performed to identify patients who underwent aortography as part of their angio-graphic study and transesophageal echocardiography. Both studies were reviewed independently in the absence of knowledge of the results of the other study. The findings of these aortograms were correlated with the findings of transesophageal echocardiography. RESULTS: A total of 34 patients underwent both aortography and echocardiography. Of a total of 34 trans esophageal echocardiograms, 29 showed abnormal findings in the aorta (85%) and 5 appeared normal (15%). These aortic abnormalities included mild to moderate atherosclerosis in 18 cases (52%), moderate to severe atherosclerosis in 4 cases (12%), and severe atherosclerosis in 7 cases (21%). None of these abnormalities were detected by aortography. No disease was visualized in the origin of the supraaortic arteries. CONCLUSIONS: Aortic arch atherosclerosis is common in patients with ischemic stroke; however, aortograms acquired during conventional angiography fail to identify abnormalities detected on transesophageal echocardiogram.

Aged↗
PubMed1985

Intravenous digital subtraction aortography in the preoperative and postoperative evaluation of Marfan's aortic disease.

Seventeen patients with the skeletal stigmata of Marfan's syndrome or the physical and radiographic findings of Marfan's aortic disease (or both) were studied using intravenous digital subtraction aortography. Digital subtraction aortography revealed a dilated aortic root in 16 of the 17 patients. One of the 17 had mildly dilated aortic sinuses with a normal ascending aorta. All of the four children (less than or equal to 16 years of age) had aortic diameters which were greater than the 95th percentile for their body surface area. The average aortic root diameter in the adult patients was 6.8 cm (range, 4-11 cm). Three of the 17 had aortic dissection, two of which were detected by digital subtraction aortography and two by aortic root injection. Four of 13 adults and three children had pulmonary arterial diameters which exceeded 4 cm. Six patients underwent ascending aorta and valvular replacement and were studied with digital subtraction aortography after surgery. All preoperative and postoperative studies were of adequate diagnostic quality. Aortic root diameters calculated from intravenous digital subtraction angiograms correlated well with those derived from echocardiography (r2 = 0.92). We conclude that intravenous digital subtraction aortography is effective in diagnosing and following Marfan's aortic disease both before and after surgery.

Adolescent↗
PubMed1996

CT aortography of thoracic aortic rupture.

OBJECTIVE: Emergent aortography is commonly used to confirm and define a suspected thoracic aortic rupture detected by CT screening. We evaluated whether helical CT aortography can replace transcatheter aortography for critically injured patients. SUBJECTS AND METHODS: Over 22 months, 38 thoracic aorta and great vessel injuries were detected in 3229 patients with nontrivial blunt chest trauma who underwent helical CT screening. Planar, oblique, and curved two-dimensional reconstructions and three-dimensional shaded-surface display and maximum intensity projection volume-rendering techniques were used to evaluate the aortic injuries. Transcatheter aortography or surgery was performed in all stable patients. RESULTS: Twenty-eight of the injuries involved the descending thoracic aorta. All such injuries were best identified on axial images before CT angiography. CT angiography adequately showed tears over 15 mm long. Smaller tears required axial images for corroboration. CONCLUSION: Technically adequate axial helical CT detects and defines all injuries of the thoracic aorta. CT angiography supplements the conventional examination and can replace transcatheter aortography except for small tears or indeterminate studies.

Adolescent↗
PubMed1977

Translumbar aortography: a study of its safety and usefulness.

We reviewed that clinical courses of 14,550 patients in whom translumbar aortography was performed. The principal aim of the survey was to determine the incidence of major and fatal complications attributable to this diagnostic study, as an index of its safety. We found that in this group, seven major (0.05%) and two fatal (0.014%) complications occurred. The corresponding incidences for transfemoral catheter aortography reported in the literature were found to be 1.34% and 0.06%, respectively. Translumbar aortography, when performed under the proper indications and appropriate conditions, has a degree of safety equal to or greater than that of transfemoral catheter aortography, and its diagnostic reliability within its technical scope is high.

Aortic Aneurysm↗
PubMedDate not supplied

Occult mediastinal great vessel trauma: the value of aortography performed during angiographic screening for blunt cervical vascular trauma.

PURPOSE: To determine the value of aortography in the assessment of occult aortic and great vessel injuries when routinely performed during screening angiography for blunt cerebrovascular injury (BCVI). METHODS: One hundred and one consecutive patients who received both aortography and screening four-vessel angiography over 4 years were identified retrospectively. Angiograms for these patients were evaluated, and the incidence of occult mediastinal vascular injury was determined. RESULTS: Of the 101 patients, 6 (6%) had angiographically documented traumatic aortic injuries. Of these 6 patients, one injury (17%) was unsuspected prior to angiography. Four of the 6 (67%) also had BCVI. One additional patient also had an injury to a branch of the subclavian artery. CONCLUSION: Routine aortography during screening angiography for BCVI is not warranted due to the low incidence (1%) of occult mediastinal arterial injury. However, in the setting of a BCVI screening study and no CT scan of the chest, aortography may be advantageous.

Adolescent↗
PubMed1991

Translumbar arch aortography: a retrospective controlled study of usefulness, technique, and safety.

Subclavian and axillary artery stenoses may lead to axillofemoral bypass graft failure. These arteries were assessed preoperatively with arch aortography performed after conventional high translumbar peripheral aortography by exchanging the initial 16-gauge sheath for a 5-F pigtail catheter. Thirty-two diagnostic translumbar runoff and arch (TLR-arch) aortograms were obtained in 30 patients with advanced lower extremity ischemia. In six patients (20%), the results of the arch study influenced the choice of an inflow site. These patients were compared with 70 control subjects who underwent conventional translumbar aortography without arch studies. In the TLR-arch group, two major complications occurred in one patient, while in the control group 11 major complications occurred in 10 patients. One retroperitoneal hematoma occurred in the TLR-arch group; two occurred in the control group. The mean change in hematocrit for the TLR-arch group was -3.81% (-0.0381), and for the control group it was -4.17% (-0.0417). This difference was not statistically significant. Arch aortography is a valuable adjunct to the translumbar aortofemoral study. It can be simply performed without increasing the morbidity of the peripheral study.

Aged↗
PubMed1984

Computed tomography versus aortography for preoperative evaluation of abdominal aortic aneurysm.

Twenty-eight patients with abdominal aortic aneurysm were examined by computed tomography (CT) and aortography. They subsequently underwent aneurysmectomy and reconstruction of the aorta. CT provided in most of the cases the same or more accurate preoperative information than aortography. CT is comfortable for the patient, less invasive and faster than aortography and can be done as an outpatient procedure. Thus, we recommend CT to be the primary method for preoperative evaluation of abdominal aortic aneurysm. In selected cases aortography gives additional information regarding the relationship to the renal arteries (when the aorta is very tortuous), the occurrence of renal artery stenosis, and peripheral vascular disease.

Adult↗
PubMed1983

Aortography by radial artery injection in infants with anomalies of the aortic arch.

Aortography by radial artery injection was performed in 22 infants and one child with congenital heart disease. The left radial artery was used in 20 cases and the right radial artery was used in 3 cases. This method visualized the following aortic arch anomalies: coarctation of the aorta in 4 patients, interrupted aortic arch in one, patent ductus arteriosus in 10, patency of the left Blalock-Taussig shunt in one and anomalous origin of the right subclavian artery in one. An injection of the contrast material into the right radial artery in one case failed to visualize coarctation of the aorta, which was confirmed by retrograde catheterization. Retrograde aortography has been necessary for diagnosis of aortic arch anomalies, but it is not so easy to perform and carries a risk of arterial thrombosis. Aortography by radial artery injection is relatively easy to perform, less invasive and has no severe complications. It is concluded that aortography by radial artery injection is a useful method for diagnosis of anomalies of the aortic arch in neonates and children.

Aortography↗
PubMed1990

Evaluation of possible traumatic thoracic aortic injury using aortography and CT.

To identify and compare the methods of evaluation for suspected traumatic aortic rupture, 1,031 trauma charts from 1983-1989 were reviewed. Fifty-nine patients were evaluated for possible aortic injury. Patients who died before completion of the CT or aortogram were excluded. Widening of the mediastinum on chest x ray was the most frequent indication for follow-up studies. Twenty-five had a CT of the aortic arch alone. No study showed disruption. There were no false negative studies. Thirty patients had only aortography. Twenty-four were read as normal (one false negative). Six were read as positive (one false positive). In four, both studies were performed (CT/aortography--TP/TP, TN/TN, TP/FN, FP/FP). (FP = False Positive, TP = True Positive, FN = False Negative, TN = True Negative.) Six received surgical repair of the aortic injury (one death). In this experience, CT was used successfully as a screening tool for aortic disruption. It was highly sensitive in recognizing aortic injuries when present (100% vs. 75% for aortography) and in most cases did not require aortographic verification. False positive rates were comparable (CT = 3.8%, aortography = 7.7%). Specificity was also comparable (CT = 96%, aortography = 92%). Overall, four aortograms were inaccurate while only one CT was inaccurate. We recommend the use of CT for the evaluation of widened mediastinum in the stable patient.

Adolescent↗
PubMed1980

Orifice-view aortography in patients with congenitally deformed aortic valves: determination of aortic valve area.

Orifice-view aortography is a contrast cineaortographic technique that allows en face viewing of the aortic valve. In this projection the anatomic configuration of the aortic valve is identified, and it is possible to planimeterize the visualized aortic valve opening and accurately determine the orifice area. Fifteen individuals with congenitally deformed aortic valves with gradients ranging from trivial (< 10 mm Hg) to surgically significant (6E 60 mm Hg) were subjected to aortic orifice area measurement by orifice-view aortography, and the area was compared with the peak systolic gradient and valve area. The results yielded a cloe correlation with the aortic valve area index as measured hydraulically or, as in three instances, directly from the surgically excised specimen (r = 0.94). A satisfactory correlation was also shown with the valve area index and the peak aortic valve gradient (r = 0.85). These observations indicate that orifice-view aortography is an accurate method for the measurement of the aortic valve orifice and may be particularly useful when hydraulic measurements are unattainable or invalid.

Adolescent↗