Doppler ultrasonography of the lower extremity arteries: anatomy and scanning guidelines

Hwang, Ji Young

doi:10.14366/usg.16054

Cited by 80 publications

(81 citation statements)

References 18 publications

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“…Among numerous applications, the relation of Doppler waveforms to ICP and arterial stenosis has been investigated, and encouraging preliminary results were observed. [14][15][16] In traumatic brain-injured adults, for example, a transcranial Doppler ultrasound (TCD) derived pulsatility index (PI) was proportionally correlated with intrasubject trends in invasively measured ICP (R ¼ 0.61). 17 This TCD PI was defined as the difference of systolic flow velocity (FV sys ) and diastolic flow velocity (FV dia ) divided by mean flow velocity (hFVi), i.e., ðFV sys − FV dia Þ∕hFVi.…”

Section: Introductionmentioning

confidence: 99%

Influence of probe pressure on the pulsatile diffuse correlation spectroscopy blood flow signal on the forearm and forehead regions

Wang

Gao

et al. 2019

Neurophoton.

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In a pilot study of 11 healthy adults (24 to 39 years, all male), we characterize the influence of external probe pressure on optical diffuse correlation spectroscopy (DCS) measurements of pulsatile blood flow obtained on the forearm and forehead. For external probe pressure control, a hand inflatable air balloon is inserted between the tissue and an elastic strap. The air balloon is sequentially inflated to achieve a wide range of external probe pressures between 20 and 250 mmHg on the forearm and forehead, which are measured with a flexible pressure sensor underneath the probe. At each probe pressure, the pulsatility index (PI) of arteriole blood flow on the forehead and forearm is measured with DCS (2.1-cm source-detector separation). We observe a strong correlation between probe pressure and PI on the forearm (R ¼ 0.66, p < 0.001), but not on the forehead (R ¼ −0.11, p ¼ 0.4). The forearm measurements demonstrate the sensitivity of the DCS PI to skeletal muscle tissue pressure, whereas the forehead measurements indicate that DCS PI measurements are not sensitive to scalp tissue pressure. Note, in contrast to pulsatility, the time-averaged DCS blood flow index on the forehead was significantly correlated with probe pressure (R ¼ −0.55, p < 0.001). This pilot data appears to support the initiation of more comprehensive clinical studies on DCS to detect trends in internal pressure in brain and skeletal muscle.

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Section: Introductionmentioning

confidence: 99%

Influence of probe pressure on the pulsatile diffuse correlation spectroscopy blood flow signal on the forearm and forehead regions

Wang

Gao

et al. 2019

Neurophoton.

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“…All measurements were performed with a fixed 60 degrees angle of insonation and in longitudinal arterial views. The examinations and the results were performed based on normality protocols and criteria [18]. To assist in the performance of the examinations, the National Health Service protocol (2015) on clinical indications and implementation methodology was also used [25].…”

Section: Methodsmentioning

confidence: 99%

“…Specific studies are needed to better understand the changes in diameter, blood pressure, blood flow velocities, and arterial stiffness, in different anatomical vascular regions and in different sports, clarifying the possible positive or negative consequences that may result from the practice of a particular sport [14,15]. In fact, some studies have verified negative consequences that come from the excessive or incorrect practice of some athletes [14,18].…”

Section: Introductionmentioning

confidence: 99%

Variability of Lower Limb Artery Systolic–Diastolic Velocities in Futsal Athletes and Non-Athletes: Evaluation by Arterial Doppler Ultrasound

Duarte-Mendes

Paulo

Coelho

et al. 2020

IJERPH

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Background: Sports athletes, namely high-intensity practitioners, suffer from vascular remodeling overtime. The purpose of this study was to analyze the systolic and diastolic velocities’ variation between non-athletes and futsal athletes by means of arterial lower limb doppler ultrasound. Additionally, we intended to verify if the velocity variations occur primarily at the systolic or the diastolic level and in which arteries. Methods: Seventy-six young males (mean ± SD: 24.9 ± 2.8 years old) volunteered to participate in this cross-sectional study and were divided into two groups: a futsal athletes group (n = 38; 24 ± 2.78 years) in the central region of Portugal playing on the 2nd national league with the same level of practice (16 ± 2.4 years of practice) and a non-athletes group (n = 38: 26 ± 1.8 years) who did not practice sports regularly and were not federated in any sport. All the subjects agreed to participate in the study with the aim of assessing the arterial lower limb through doppler ultrasound (Philips HD7 echograph with linear transducer 7–12 MHz). Results: Differences between groups (p ≤ 0.05) in the systolic velocity of the left deep femoral artery (p = 0.022; d = 0.546, small) and in the right superficial femoral artery (p = 0.028; d = −0.515, small) were found. We also found differences in the diastolic velocity: in the left common femoral artery (p = 0.002; d = −0.748, moderate), in the right deep femoral artery (p = 0.028; d = −0.521, small), in the right superficial femoral artery (p = 0.026; d = −0.522, small), in the right popliteal artery (p = 0.002; d = −0.763, moderate), and in the left popliteal artery (p = 0.007; d = −0.655, moderate). Moreover, the athletes’ group presented the highest mean values, with the exception of the systolic velocity of the left deep femoral artery. In intragroup analysis of variance referring to systolic and diastolic velocities in arterial levels in the right and left arteries, differences were found in all analyses (p ≤ 0.05). Conclusions: We conclude that futsal athletes of our sample go through a process of changes such as increased blood flow velocity in systolic and diastolic cardiac phase in all studied lower limb arteries, showing that the remodeling occurs regardless of vessel radius. Our results reinforce the existence of vascular remodeling that may vary with the sport and its intensity.

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“…DFUs were categorised according to their type, and only ischaemic ones were included. To ensure this, patients were recruited if they exhibited biphasic/monophasic waveforms and/or ABI was <0.9 [ 17 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

Hyperbaric Oxygen Therapy in Ischaemic Foot Ulcers in Type 2 Diabetes: A Clinical Trial

Perren¹,

Gatt²,

Παπάνας³

et al. 2018

TOCMJ

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Background and Aims:Several treatment modalities and protocols for ischaemic foot ulcers are available. However, little consensus exists on optimal treatment. The aim of this study was to compare Standard Wound Care (SWC) alone vs. SWC with adjunct hyperbaric oxygen therapy (HBOT) in the treatment of ischaemic Diabetic Foot Ulcers (DFUs).Patients and Methods:Twenty-six patients with Type 2 Diabetes Mellitus (T2DM) presenting with a newly diagnosed ischaemic foot ulcer were included. These were divided into group A (SWC with adjunct HBOT) and group B (SWC only). Participants were followed every week for 4 weeks and their ulcers were measured for their surface area and depth to assess any change in wound size.Results:Both treatment arms succeeded in reducing ulcer area and depth (p<0.001). However, ulcer area (p<0.001) and depth (p<0.001) exhibited superior improvement in group A.Conclusion :Adjunctive HBOT appears to improve wound healing in ischaemic DFUs and merits further study.

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Doppler ultrasonography of the lower extremity arteries: anatomy and scanning guidelines

Cited by 80 publications

References 18 publications

Influence of probe pressure on the pulsatile diffuse correlation spectroscopy blood flow signal on the forearm and forehead regions

Influence of probe pressure on the pulsatile diffuse correlation spectroscopy blood flow signal on the forearm and forehead regions

Variability of Lower Limb Artery Systolic–Diastolic Velocities in Futsal Athletes and Non-Athletes: Evaluation by Arterial Doppler Ultrasound

Hyperbaric Oxygen Therapy in Ischaemic Foot Ulcers in Type 2 Diabetes: A Clinical Trial

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