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Boström-Ardin, A.
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Publications (4 of 4) Show all publications
Eklöf, H., Ahlström, H., Boström-Ardin, A., Bergqvist, D., Andrén, B., Karacagil, S. & Nyman, R. (2005). Renal artery stenosis evaluated with magnetic resonance angiography using intraarterial pressure gradient as the standard of reference: A multireader study. Acta Radiologica, 46(8), 802-809
Open this publication in new window or tab >>Renal artery stenosis evaluated with magnetic resonance angiography using intraarterial pressure gradient as the standard of reference: A multireader study
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2005 (English)In: Acta Radiologica, ISSN 0284-1851, E-ISSN 1600-0455, Vol. 46, no 8, p. 802-809Article in journal (Refereed) Published
Abstract [en]

PURPOSE: To evaluate 3D-Gd-magnetic resonance angiography (MRA) in detecting hemodynamically significant renal artery stenosis (RAS). MATERIAL AND METHODS: Thirty patients evaluated for atherosclerotic RAS by MRA and digital subtraction angiography (DSA) were retrospectively included. Standard of reference for hemodynamically significant RAS was a transstenotic gradient of 15 mmHg. DSA visualized 60 main renal arteries and 9 accessory arteries. Pressure gradient measurement (PGM) was available from 61 arteries. Three radiologists evaluated all examinations independently in a blinded fashion. RESULTS: RAS was present in 26 arteries. On MRA, each reader identified 4 of 9 accessory renal arteries, a detection rate of 44%. The three readers correctly classified 22/25/22 of the 26 vessels with a significant gradient as > or =60% RAS and 31/25/32 of the 35 with no significant gradient as < 60% RAS on MRA. Interobserver agreement was substantial. MRA image quality was adequate for RAS evaluations in all patients. ROC curves indicated that MRA is an adequate method for evaluating RAS. When screening for RAS, a 50% diameter reduction cut-off is better than 60%. RAS with 40-80% diameter reductions accounted for 65% of discrepancies. CONCLUSION: MRA is an adequate method for evaluating RAS limited mainly by poor detection rate for accessory renal arteries.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-93517 (URN)10.1080/02841850500335010 (DOI)16392604 (PubMedID)
Available from: 2005-09-06 Created: 2005-09-06 Last updated: 2017-12-14Bibliographically approved
Boström, A., Karacagil, S., Jonsson, M.-L., Andrén, B. & Östholm, G. (2002). Repeat surgery without preoperative angiography in limbs with patent infrainguinal bypass grafts. European Journal of Vascular and Endovascular Surgery, 36(5), 343-350
Open this publication in new window or tab >>Repeat surgery without preoperative angiography in limbs with patent infrainguinal bypass grafts
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2002 (English)In: European Journal of Vascular and Endovascular Surgery, ISSN 1078-5884, E-ISSN 1532-2165, Vol. 36, no 5, p. 343-350Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to assess the feasibility and results of repeat surgery without preoperative angiography in limbs with patent infrainguinal bypass grafts. Between January 1995 and December 1999, 73 surgical interventions were performed for correction of inflow, graft, or runoff-related lesions in limbs with patent infrainguinal bypass grafts. Fifty-six of the 73 cases were operated on based on the findings obtained from duplex scanning alone. There were 53 vein and 3 prosthetic grafts in the series. The indications for intervention without angiography were stenotic or occlusive lesions in 35, graft aneurysm in 7, and arteriovenous fistulae in 14. There were no deviations from the preoperatively planned surgical strategy in patients undergoing surgery without preoperative angiography. Cumulative life table primary, (stenosis free) and primary-assisted patency rates, at 12 months following graft revisions (excluding arteriovenous fistulae ligatures) without preoperative angiography, were 64% and 85%, respectively. The corresponding figures for revisions performed with preoperative angiography were 58% and 84%, respectively. There were no significant differences between patients undergoing surgery with or without preoperative diagnostic angiography with regard to patency rates. Surgical interventions for correction of infrainguinal graft-related stenotic or aneurysmal lesions can be safely performed based on findings obtained from duplex scanning.

Keywords
Aged, Aged; 80 and over, Angiography, Arteriovenous Fistula/surgery, Blood Vessel Prosthesis, Female, Graft Occlusion; Vascular/*surgery/*ultrasonography, Humans, Ischemia/surgery, Leg/blood supply/*surgery, Male, Middle Aged, Preoperative Care, Reoperation, Research Support; Non-U.S. Gov't, Retrospective Studies, Ultrasonography; Doppler; Duplex
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-71908 (URN)10.1177/153857440203600503 (DOI)12244422 (PubMedID)
Available from: 2007-03-14 Created: 2007-03-14 Last updated: 2017-11-21Bibliographically approved
Boström Ardin, A., Löfberg, A.-M., Hellberg, A., Andrén, B., Ljungman, C., Logason, K. & Karacagil, S. (2002). Selection of patients with infrainguinal arterial occlusive disease for percutaneous transluminal angioplasty with duplex scanning. Acta Radiologica, 43(4), 391-395
Open this publication in new window or tab >>Selection of patients with infrainguinal arterial occlusive disease for percutaneous transluminal angioplasty with duplex scanning
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2002 (English)In: Acta Radiologica, ISSN 0284-1851, E-ISSN 1600-0455, Vol. 43, no 4, p. 391-395Article in journal (Refereed) Published
Abstract [en]

AIM: To evaluate the role of duplex scanning in the selection of patients with infrainguinal arterial occlusive disease for percutaneous transluminal angioplasty (PTA).

MATERIAL AND METHODS: From January 1995 through May 2000, 702 patients (952 limbs), with chronic lower extremity ischemia due to infrainguinal atherosclerotic disease diagnosed by duplex scanning, were retrospectively studied. Diagnostic angiography (130 limbs) or infrainguinal PTA (108 limbs) was performed in 238 limbs. Two investigators retrospectively analyzed the duplex examinations and angiographies in a blinded manner and used similar criteria for the interpretation of lesions suitable or not suitable for PTA.

RESULTS: The superficial femoral, popliteal and crural artery lesions were correctly selected for PTA in 85%, 66% and 32%, respectively. The accuracy, sensitivity, specificity, negative predictive value and positive predictive value of duplex scanning to appropriately categorize femoropopliteal lesions as suitable or unsuitable for PTA were 89%, 83%, 92%, 94% and 78%, respectively. The accuracy of duplex scanning for predicting the performance of infrainguinal PTA was 83%.

CONCLUSION: Duplex scanning has an important impact on the selection of treatment modalities in limbs with infrainguinal arterial occlusive disease. Femoropopliteal lesions can be reliably selected to PTA according to duplex scan findings.

Keywords
Aged, Angioplasty; Balloon, Arteriosclerosis/*therapy/*ultrasonography, Female, Humans, Leg/blood supply, Male, Peripheral Vascular Diseases/*therapy/*ultrasonography, Predictive Value of Tests, Retrospective Studies, Sensitivity and Specificity, Ultrasonography; Doppler; Duplex
National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-71909 (URN)12225481 (PubMedID)
Available from: 2007-03-14 Created: 2007-03-14 Last updated: 2017-11-21Bibliographically approved
Boström Ardin, A., Karacagil, S., Hellberg, A., Ljungman, C., Logason, K. & Östholm, G. (2002). Surgical reconstruction without preoperative angiography in patients with aortoiliac occlusive disease. Annals of Vascular Surgery, 16(3), 273-278
Open this publication in new window or tab >>Surgical reconstruction without preoperative angiography in patients with aortoiliac occlusive disease
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2002 (English)In: Annals of Vascular Surgery, ISSN 0890-5096, E-ISSN 1615-5947, Vol. 16, no 3, p. 273-278Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to evaluate the feasibility of performing surgical reconstructions in patients with aortoiliac occlusive disease with findings obtained solely from duplex scanning. Between January 1995 through December 1999, among 112 patients who underwent surgical intervention due to aortoiliac occlusive disease, 44 were operated on with findings obtained solely from preoperative duplex scanning. Deviations from preoperatively planned surgical interventions according to duplex scan findings and the outcome were analyzed. Our results showed that surgical reconstructions for treatment of aortoiliac occlusive disease can be safely performed by using duplex scanning as the sole preoperative diagnostic modality in patients with conclusive duplex scan findings.

National Category
Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-63907 (URN)10.1007/s10016-001-0237-y (DOI)12016542 (PubMedID)
Available from: 2006-09-22 Created: 2006-09-22 Last updated: 2017-11-30Bibliographically approved
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