Dr. Anders Svensson, PhD. RT - Department of Clinical Science, Division of Medical Imaging and Technology, Intervention and Technology at Karolinska Institute - Radiographer, researcher

Dr. Anders Svensson

PhD. RT

Department of Clinical Science, Division of Medical Imaging and Technology, Intervention and Technology at Karolinska Institute

Radiographer, researcher

Stockholm | Sweden

Main Specialties: Radiology-Diagnostic

Additional Specialties: Computed tomography

ORCID logohttps://orcid.org/0000-0001-5685-7255


Top Author

Dr. Anders Svensson, PhD. RT - Department of Clinical Science, Division of Medical Imaging and Technology, Intervention and Technology at Karolinska Institute - Radiographer, researcher

Dr. Anders Svensson

PhD. RT

Introduction

Anders Svensson graduated from Medical University radiography education in Stockholm 1986. He received his bachelor's degree in 2004 and became Medicine Licentiate in 2012. In 2015 he received his PhD in Medical Science from the Karolinska Institute, Stockholm. Dr. Anders Svensson currently serving as a radiographer and researcher at the department of Radiology, Karolinska University Hospital in Stockholm. He has so far published 24 publications all in the field of computer tomography, a modality where he worked most of his career. Dr. Anders Svensson is affiliated with the Karolinska Institute. He is a member of the Swedish Contrast Media Committee and part of the European Federation of Radiographer Societies Expert Council for computed tomography.

Primary Affiliation: Department of Clinical Science, Division of Medical Imaging and Technology, Intervention and Technology at Karolinska Institute - Stockholm , Sweden

Specialties:

Additional Specialties:

Research Interests:


View Dr. Anders Svensson’s Resume / CV

Education

Aug 1984 - Oct 1986
Department of Clinical Science, Intervention and Technology at Karolinska Institute , Division of Medical Imaging and Technology
CT-tech
Department of Radiology, Karolinska University Hospital in Huddinge

Experience

Karolinska University Hospital in Huddinge
Karolinska Institutet

Department of Clinical Science, Intervention and Technology
Karolinska University Hospital

Department of Radiology - Huddinge

Publications

30Publications

158Reads

152Profile Views

The synthetic localizer radiograph - A new CT scan planning method.

Phys Med 2019 May 28;61:58-63. Epub 2019 Apr 28.

Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Radiology, Karolinska University Hospital in Huddinge, Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.ejmp.2019.04.019DOI Listing
May 2019
4 Reads
2.403 Impact Factor

Dual source abdominal computed tomography: the effect of reduced X-ray tube voltage and intravenous contrast media dosage in patients with reduced renal function.

Acta Radiol 2019 Mar 22;60(3):293-300. Epub 2018 Jun 22.

1 Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Division of Medical Imaging and Technology, Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/0284185118783213DOI Listing
March 2019
15 Reads
1.350 Impact Factor

Visualization of the peripheral vascularity by time-resolved computed tomography: a case report.

Acta Radiol Open 2019 Jan 31;8(1):2058460118820059. Epub 2019 Jan 31.

Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Division of Medical Imaging and Technology, Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://journals.sagepub.com/doi/10.1177/2058460118820059
Publisher Site
http://dx.doi.org/10.1177/2058460118820059DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6357294PMC
January 2019
11 Reads

Triple Arterial Phase CT of the Liver with Radiation Dose Equivalent to That of Single Arterial Phase CT: Initial Experience.

Radiology 2018 10 19;289(1):111-118. Epub 2018 Jun 19.

From the Department of Clinical Science, Intervention and Technology (CLINTEC), Radiology Unit, Karolinska Institutet, Alfred Nobels alle 8, 141 52 Huddinge, C1:46 14186 Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1148/radiol.2018172875DOI Listing
October 2018
28 Reads
6.870 Impact Factor

Single-phase bilateral low dose contrast medium injection for diagnosing occlusions of the thoracic venous system: a case report.

Acta Radiol Open 2018 Jun 25;7(6):2058460118778060. Epub 2018 Jun 25.

Department of Clinical Science, Intervention and Technology at KarolinskaInstitutet, Division of Medical Imaging and Technology, Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/2058460118778060DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6039902PMC
June 2018
18 Reads

Variable size of aortic subvalvular pseudoaneurysm.

Acta Radiol Open 2018 Jun 25;7(6):2058460118778068. Epub 2018 Jun 25.

Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Division of Medical Imaging and Technology, Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1177/2058460118778068DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6039904PMC
June 2018
16 Reads

Plasma biomarker levels and non-obstructive coronary artery disease determined by coronary computed tomography angiography.

Clin Physiol Funct Imaging 2018 Mar 6;38(2):246-253. Epub 2017 Feb 6.

Department of Clinical Science and Education at Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/cpf.12407DOI Listing
March 2018
66 Reads
1.380 Impact Factor

Influence of tube potential on CT body composition analysis

Nutrition

Abstract Purpose To investigate whether tube potential in contrast enhanced Computed Tomography (CT) affects body composition analysis Methods Images from dual-source, dual-energy CT from the abdomen with intravenous contrast media administration were used. 17 patients (11 women, mean ag 52) with a mean BMI of 20.8 kg/cm2 were included. Simultaneously acquired images with a tube voltage of 80kV and 140kV were compared. Body composition was analyzed on a single slice at the L3-level. Parameters evaluated included muscle and fat attenuation (Hounsfield Units, HU), skeletal muscle index (SMI, cm2/m2), muscle area (cm2) and steatotic muscle area (cm2). Significant differences between 80kV and 140kV series were compared using the paired Student's t-test. Results Tube potential affected muscle attenuation with an average difference of 17% between 80kV and 140kV series (48 HU vs 41 HU, P<0.01), fat attenuation (-84 HU vs -69 HU, P<0.01), SMI of 5.2% (40.1 cm2/m2 vs 42.2 cm2/m2,P<0.01), muscle area of 5.1% (117 cm2 vs 123 cm2 P<0.01) and steatotic muscle area of 12.9% (31 cm2 vs 35 cm2,P<0.01). Conclusion Tube potential significantly affects body segmentation in contrast enhanced CT.

View Article
March 2018
16 Reads

Hypo-Attenuated Leaflet Thickening and Reduced Leaflet Motion in Sutureless Bioprosthetic Aortic Valves

J Am Heart Assoc. 2017;6: e005251. DOI: 10.1161/JAHA.116.005251

Journal of the American Heart Association

Background-—The prevalence of hypo-attenuated leaflet thickening (HALT) and reduced leaflet motion (RLM) is unknown in surgically implanted bioprostheses because systematic investigation of HALT and/or RLM is limited to a few catheter-based valves. The aim of this study was to investigate the prevalence of HALT and RLM by cardiac computed tomography in patients who underwent surgical aortic valve replacement and received a Perceval sutureless aortic valve bioprosthesis. Methods and Results-—This was a single-center prospective observational study that included 47 patients (83.5% of the total number of implantations) who underwent surgical aortic valve replacement with implantation of the Perceval sutureless bioprosthesis (LivaNova PLC, London, UK) at Karolinska University Hospital in Stockholm, Sweden from 2012 to 2016 and were studied by cardiac computed tomography. Cardiac computed tomography was performed at a median of 491 days (range 36– 1247 days) postoperatively. HALT was found in 18 (38%) patients and RLM in 13 (28%) patients. All patients with RLM had HALT. Among patients with HALT, 5 out of 18 patients (28%) were treated with anticoagulation (warfarin or any novel oral anticoagulant) at the time of cardiac computed tomography. Among patients with RLM, 3 out of 13 patients (23%) were treated with anticoagulation. Conclusions-—HALT and RLM were prevalent in the surgically implanted Perceval sutureless aortic valve bioprosthesis. Both HALT and RLM were found in patients with ongoing anticoagulation treatment. Whether these findings are associated with adverse events needs further study.

View Article
August 2017
17 Reads

Anomalous origin of right coronary artery from the pulmonary artery

Eur Heart J. 2017 May 23. doi: 10.1093/eurheartj/ehx271. [Epub ahead of print]

European Heart Journal

View Article
May 2017
22 Reads

Peritoneal dialysis impairs nitric oxide homeostasis and may predispose infants with low systolic blood pressure to cerebral ischemia

Nitric Oxide.

BACKGROUND & PURPOSE: Infants on chronic peritoneal dialysis (PD) have an increased risk of developing neurological morbidities; however, the underlying biological mechanisms are poorly understood. In this clinical study, we investigated whether PD-mediated impairment of nitric oxide (NO) bioavailability and signaling, in patients with persistently low systolic blood pressure (SBP), can explain the occurrence of cerebral ischemia. METHODS & RESULTS: Repeated blood pressure measurements, serial neuroimaging studies, and investigations of systemic nitrate and nitrite levels, as well as NO signaling, were performed in ten pediatric patients on PD. We consistently observed the loss of both inorganic nitrate (-17 ± 3%, P < 0.05) and nitrite (-34 ± 4%, P < 0.05) during PD, which may result in impairment of the nitrate-nitrite-NO pathway. Indeed, PD was associated with significant reduction of cyclic guanosine monophosphate levels (-59.4 ± 15%, P < 0.05). This reduction in NO signaling was partly prevented by using a commercially available PD solution supplemented with lL-arginine. Although PD compromised nitrate-nitrite-NO signaling in all cases, only infants with persistently low SBP developed ischemic cerebral complications. CONCLUSIONS: Our data suggests that PD impairs NO homeostasis and predisposes infants with persistently low SBP to cerebral ischemia. These findings improve current understanding of the pathogenesis of infantile cerebral ischemia induced by PD and may lead to the new treatment strategies to reduce neurological morbidities. Copyright © 2016. Published by Elsevier Inc. KEYWORDS: Blood pressure; Cerebral ischemia; Chronic kidney disease (CKD); Dialysis; Nitrate; Nitric oxide; Nitric oxide synthase (NOS); Nitrite; cGMP PMID: 27234508 [PubMed - as supplied by publisher] Share on Facebook Share on Twitter Share on Google+

View Article
May 2016
21 Reads

Renal versus splenic maximum slope based perfusion CT modelling in patients with portal-hypertension

Eur Radiol. 2016 Feb 25. [Epub ahead of print]

European Radiology

PURPOSE: To assess liver perfusion-CT (P-CT) parameters derived from peak-splenic (PSE) versus peak-renal enhancement (PRE) maximum slope-based modelling in different levels of portal-venous hypertension (PVH). MATERIAL AND METHODS: Twenty-four patients (16 men; mean age 68 ± 10 years) who underwent dynamic P-CT for detection of hepatocellular carcinoma (HCC) were retrospectively divided into three groups: (1) without PVH (n = 8), (2) with PVH (n = 8), (3) with PVH and thrombosis (n = 8). Time to PSE and PRE and arterial liver perfusion (ALP), portal-venous liver perfusion (PLP) and hepatic perfusion-index (HPI) of the liver and HCC derived from PSE- versus PRE-based modelling were compared between the groups. RESULTS: Time to PSE was significantly longer in PVH groups 2 and 3 (P = 0.02), whereas PRE was similar in groups 1, 2 and 3 (P > 0.05). In group 1, liver and HCC perfusion parameters were similar for PSE- and PRE-based modelling (all P > 0.05), whereas significant differences were seen for PLP and HPI (liver only) in group 2 and ALP in group 3 (all P < 0.05). CONCLUSION: PSE is delayed in patients with PVH, resulting in a miscalculation of PSE-based P-CT parameters. Maximum slope-based P-CT might be improved by replacing PSE with PRE-modelling, whereas the difference between PSE and PRE might serve as a non-invasive biomarker of PVH. KEY POINTS: • Peak-splenic enhancement is decreased and delayed in patients with portal-venous hypertension • The maximum-slope method uses PSE to calculate arterial and portal-venous liver perfusion • Peak-renal enhancement (PRE) is insensitive to PVH and might improve perfusion modelling • The difference between PSE and PRE might serve as a non-invasive PVH biomarker. KEYWORDS: Computed tomography; Liver cirrhosis; Maximum slope model; Perfusion imaging; Portal hypertension

View Article
February 2016
25 Reads

A Path to Avoid during Transcatheter Aortic Valve Implantation: Case Report

Radiology

Collateral pathways in vascular disease are important natural “bypass” conduits that protect against ischemia. Endovascular diagnostic and therapeutic procedures via peripheral access sites are performed frequently. This case report underlines the importance of being aware of collateral circulation in patients with chronic aortoiliac occlusive disease undergoing subclavian transcatheter aortic valve implantation to avoid acute limb ischemia.

View Article
January 2016
30 Reads

Top co-authors

Torkel B Brismar
Torkel B Brismar

Karolinska Institutet

5
Fabian Morsbach
Fabian Morsbach

University Hospital Zurich

3
Michael A Fischer
Michael A Fischer

Brigham and Women's Hospital

2
Kerstin Cederlund
Kerstin Cederlund

Department of Radiology

2
Stefan Agewall
Stefan Agewall

Oslo University Hospital

1
Elin B Brolin
Elin B Brolin

Karolinska University Hospital Huddinge

1
Per Tornvall
Per Tornvall

Karolinska Institutet

1
Loghman Henareh
Loghman Henareh

Karolinska Institute

1
Nikolaos Voulgarakis
Nikolaos Voulgarakis

University of California

1