CT perfusion in peripheral arterial disease-hemodynamic differences before and after revascularisation.

Veit-Haibach, Patrick; Huellner, Martin W; Banyai, Martin; Mafeld, Sebastian; Heverhagen, Johannes; Strobel, Klaus; Sah, Bert-Ram (2021). CT perfusion in peripheral arterial disease-hemodynamic differences before and after revascularisation. (In Press). European radiology Springer-Verlag 10.1007/s00330-021-07692-5

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OBJECTIVES

The purpose of this study was the assessment of volumetric CT perfusion (CTP) of the lower leg musculature in patients with symptomatic peripheral arterial disease (PAD) before and after interventional revascularisation.

METHODS

Twenty-nine consecutive patients with symptomatic PAD of the lower extremities requiring interventional revascularisation were assessed prospectively. All patients underwent a CTP scan of the lower leg, and hemodynamic and angiographic assessment, before and after intervention. Ankle-brachial pressure index (ABI) was determined. CTP parameters were calculated with a perfusion software, acting on a no outflow assumption. A sequential two-compartment model was used. Differences in CTP parameters were assessed with non-parametric tests.

RESULTS

The cohort consisted of 24 subjects with an occlusion, and five with a high-grade stenosis. The mean blood flow before/after (BFpre and BFpost, respectively) was 7.42 ± 2.66 and 10.95 ± 6.64 ml/100 ml*min-1. The mean blood volume before/after (BVpre and BVpost, respectively) was 0.71 ± 0.35 and 1.25 ± 1.07 ml/100 ml. BFpost and BVpost were significantly higher than BFpre and BVpre in the treated limb (p = 0.003 and 0.02, respectively), but not in the untreated limb (p = 0.641 and 0.719, respectively).

CONCLUSIONS

CTP seems feasible for assessing hemodynamic differences in calf muscles before and after revascularisation in patients with symptomatic PAD. We could show that CTP parameters BF and BV are significantly increased after revascularisation of the symptomatic limb. In the future, this quantitative method might serve as a non-invasive method for surveillance and therapy control of patients with peripheral arterial disease.

KEY POINTS

• CTP imaging of the lower limb in patients with symptomatic PAD seems feasible for assessing hemodynamic differences before and after revascularisation in PAD patients. • This quantitative method might serve as a non-invasive method, for surveillance and therapy control of patients with PAD.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic, Interventional and Paediatric Radiology

UniBE Contributor:

Heverhagen, Johannes and Sah, Bert-Ram

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0938-7994

Publisher:

Springer-Verlag

Language:

English

Submitter:

Maria de Fatima Henriques Bernardo

Date Deposited:

15 Feb 2021 17:58

Last Modified:

14 Mar 2021 08:13

Publisher DOI:

10.1007/s00330-021-07692-5

PubMed ID:

33547479

Uncontrolled Keywords:

Contrast media Perfusion imaging Peripheral arterial disease Volumetric CT

BORIS DOI:

10.48350/152015

URI:

https://boris.unibe.ch/id/eprint/152015

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