scholarly journals Wireless point-of-care ultrasound: First experiences with a new generation handheld device

2021 ◽  
pp. 1-12
Author(s):  
E.M. Jung ◽  
J. Dinkel ◽  
N. Verloh ◽  
M. Brandenstein ◽  
C. Stroszczynski ◽  
...  
Keyword(s):  
Image Quality ◽  
Mobile Device ◽  
Point Of Care ◽  
Point Of Care Ultrasound ◽  
Imaging Method ◽  
Diagnostic Reliability ◽  
Handheld Device ◽  
Ultrasound Device ◽  
Linear Probe ◽  
New Generation

AIM: To evaluate the diagnostic reliability of a new generation wireless point-of care ultrasound device for abdominal and thoracic findings. MATERIAL AND METHODS: 40 patients (16 females, 24 males 19 –80 years, on average 56.1 years) were scanned by an experienced examiner using the new wireless Vscan Air device for abdominal and thoracic findings. The probe frequencies were 2–5 MHz (convex probe) and 3–12 MHz for the linear probe. As a reference standard, all patients were also examined using high-end ultrasound (LOGIQ E9/10). Results were interpreted independently by two examiners in consensus, also with regard to the image quality (0–4, from not assessable = 0, to excellent 4). RESULTS: In all 40 patients (100%) examination with conventional high-end ultrasound and the Vscan Air ultrasound device was feasible. Sensitivity, specificity, positive and negative predictive value for the diagnosis of abdominal and thoracic findings were 63.3%, 100%, 100%, and 40%, respectively. Most main diagnostic findings were detected using the mobile device compared to the high-end ultrasound. Limitations were found regarding characterization and classification of hepatic and renal tumorous lesions. Image quality revealed mostly minor diagnostic limitations for the mobile device, mean 2.9 (SD –0.300) and was excellent or with only minor diagnostic limitations for conventional high-end ultrasound, mean 3.25 (SD –0.438). CONCLUSION: Due to its easy application and its high diagnostic reliability, point-of-care ultrasound systems of the latest generation represent a valuable imaging method for the primary assessment of abdominal and thoracic findings, especially in patients on intensive care units or in emergency situations.

Point of Care Ultrasound in Geriatric Patients: Prospective Evaluation of a Portable Handheld Ultrasound Device

2019 ◽  
Vol 41 (03) ◽  
pp. 308-316 ◽  
Author(s):  
Eckhart Fröhlich ◽  
Katharina Beller ◽  
Reinhold Muller ◽  
Maria Herrmann ◽  
Ines Debove ◽  
...  
Keyword(s):  
Decision Making ◽  
Geriatric Patients ◽  
Clinical Decision Making ◽  
Point Of Care ◽  
False Negative ◽  
Clinical Decision ◽  
Point Of Care Ultrasound ◽  
Handheld Device ◽  
Ultrasound Device ◽  
Handheld Ultrasound

Abstract Purpose The aim of the current study was to evaluate point of care ultrasound (POCUS) in geriatric patients by echoscopy using a handheld ultrasound device (HHUSD, VScan) at bedside in comparison to a high-end ultrasound system (HEUS) as the gold standard. Materials and Methods Prospective observational study with a total of 112 geriatric patients. The ultrasound examinations were independently performed by two experienced blinded examiners with a portable handheld device and a high-end ultrasound device. The findings were compared with respect to diagnostic findings and therapeutic implications. Results The main indications for the ultrasound examinations were dyspnea (44.6 %), fall (frailty) (24.1 %) and fever (21.4 %). The most frequently found diagnoses were cystic lesions 32.1 % (35/109), hepatic vein congestion 19.3 % (21/109) and ascites 13.6 % (15/110). HHUSD delivered 13 false-negative findings in the abdomen resulting in an “overall sensitivity” of 89.5 %. The respective “overall specificity” was 99.6 % (7 false-positive diagnoses). HHUSD (versus HEUS data) resulted in 13.6 % (17.3 %) diagnostically relevant procedures in the abdomen and 0.9 % (0.9 %) in the thorax. Without HHUSD (HEUS) 95.7 % (100 %) of important pathological findings would have been missed. Conclusion The small HHUSD tool improves clinical decision-making in immobile geriatric patients at the point of care (geriatric ward). In most cases, HHUSD allows sufficiently accurate yes/no diagnoses already at the bedside, thereby clarifying the leading symptoms for early clinical decision-making.

scholarly journals Evaluation of a novel handheld point-of-care ultrasound device in an African emergency department

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Samuel L. Burleson ◽  
Jonathan F. Swanson ◽  
Erin F. Shufflebarger ◽  
Douglas W. Wallace ◽  
Matthew A. Heimann ◽  
...  
Keyword(s):  
Emergency Department ◽  
Image Quality ◽  
Point Of Care ◽  
Low Cost ◽  
Clinical Care ◽  
Point Of Care Ultrasound ◽  
Emergency Setting ◽  
Low Resource ◽  
Ultrasound Device ◽  
High Acuity

Abstract Background Many point-of-care ultrasound devices are now “pocket-sized” or handheld, allowing easy transport during travel and facilitating use in crowded spaces or in austere low-resource settings. Concerns remain about their durability, image quality, and clinical utility in those environments. Method Five emergency physicians with training in point-of-care ultrasound employed the Butterfly iQ, a novel handheld ultrasound device, in routine clinical care in a busy, high-acuity African emergency department over a period of 10 weeks. We retrospectively evaluated the performance of the Butterfly iQ from the perspectives of both the clinicians using the device and expert ultrasound faculty reviewing the images. Results We found advantages of the Butterfly iQ in a high-acuity African emergency department include its use of a single probe for multiple functions, small size, ease of transport, relatively low cost, and good image quality in most functions. Disadvantages include large probe footprint, lower, though still adequate, cardiac imaging quality, frequent overheating, and reliance on internet-based cloud storage, but these were surmountable. We also report a wide variety of patient presentations, pathology, and procedures to which the device was used. Conclusion We conclude the Butterfly iQ is an effective, though imperfect, point-of-care ultrasound device in a low-resource emergency setting. We will continue to employ the device in clinical emergency care and teaching in this setting.

scholarly journals Relationship between Evaluations of Tracheal Tube Position Using Ultrasound and Fluoroscopy in an Infant and Pediatric Population

2020 ◽  
Vol 9 (6) ◽  
pp. 1707
Author(s):  
Davinder Ramsingh ◽  
Elizabeth Ghazal ◽  
Brent Gordon ◽  
Philip Ross ◽  
Darren Goltiao ◽  
...  
Keyword(s):  
Image Quality ◽  
Tracheal Tube ◽  
Strong Correlation ◽  
Point Of Care ◽  
Pediatric Population ◽  
Cricoid Cartilage ◽  
Pediatric Care ◽  
Point Of Care Ultrasound ◽  
Linear Probe ◽  
Age Range

Introduction: A non-radiographic technique to measure the location of the tracheal tube (TT) in children is of value given the risk of inappropriate TT placement along with concerns about radiation exposure. Airway point-of-care ultrasound (POCUS) has demonstrated utility in children, but the examinations vary by age and may require non-traditional techniques or utilize less common probes. This study evaluated the performance of measuring the tracheal location of the cuffed TT using a novel, linear probe-based POCUS examination over a wide age range of children. After adjusting for the subjects’ height and TT size, ultrasound measurements of the TT cuff location were compared with fluoroscopy measurements of the TT tip location. Methods: Perioperative pediatric patients (<10 years) requiring a cuffed TT were enrolled. After routine TT placement, ultrasound and fluoroscopy images were obtained. Measurements from the TT cuff to the cricoid cartilage were obtained from the POCUS examination. Chest fluoroscopy was reviewed to measure the TT’s distance from the carina. Both measurements were then compared after scaling for patient height. The duration of the ultrasound examination and image quality scores were also recorded. Results: Forty-one patients were enrolled, with a median age of 3 (25th/75th percentile: 1.50/7.00) years. The POCUS examination identified the TT cuff in all cases with the highest image quality score. The median POCUS exam time was 112 (25th/75th percentile: 80.00/156.00) seconds. There was a strong correlation between the POCUS measurements and the fluoroscopy measurements, r = −0.7575, 95% CI [−0.8638, −0.5866 ], p < 0.001). Conclusions: Our results demonstrate a strong correlation between POCUS TT localization measurements and traditional measurements via fluoroscopy. This study further supports the utility of POCUS for pediatric care.

scholarly journals Reverse Scan Conversion and Efficient Deep Learning Network Architecture for Ultrasound Imaging on a Mobile Device

Sensors ◽  
2021 ◽  
Vol 21 (8) ◽  
pp. 2629
Author(s):  
Kunkyu Lee ◽  
Min Kim ◽  
Changhyun Lim ◽  
Tai-Kyong Song
Keyword(s):  
Deep Learning ◽  
Ultrasound Imaging ◽  
Mobile Device ◽  
Network Architecture ◽  
Point Of Care ◽  
Ultrasound Image ◽  
Training Dataset ◽  
Point Of Care Ultrasound ◽  
Reverse Scan ◽  
Scan Conversion

Point-of-care ultrasound (POCUS), realized by recent developments in portable ultrasound imaging systems for prompt diagnosis and treatment, has become a major tool in accidents or emergencies. Concomitantly, the number of untrained/unskilled staff not familiar with the operation of the ultrasound system for diagnosis is increasing. By providing an imaging guide to assist clinical decisions and support diagnosis, the risk brought by inexperienced users can be managed. Recently, deep learning has been employed to guide users in ultrasound scanning and diagnosis. However, in a cloud-based ultrasonic artificial intelligence system, the use of POCUS is limited due to information security, network integrity, and significant energy consumption. To address this, we propose (1) a structure that simultaneously provides ultrasound imaging and a mobile device-based ultrasound image guide using deep learning, and (2) a reverse scan conversion (RSC) method for building an ultrasound training dataset to increase the accuracy of the deep learning model. Experimental results show that the proposed structure can achieve ultrasound imaging and deep learning simultaneously at a maximum rate of 42.9 frames per second, and that the RSC method improves the image classification accuracy by more than 3%.

“To Do or Not To Do?” Clinical Integration of Point-Of-Care Ultrasound After Training: A Prospective Study

2020 ◽  
Author(s):  
Wan-Ching Lien ◽  
Chih-Heng Chang ◽  
Kah-Meng Chong ◽  
Meng-Che Wu ◽  
Cheng-Yi Wu ◽  
...  
Keyword(s):  
Image Quality ◽  
Prospective Study ◽  
Patient Care ◽  
Point Of Care ◽  
Point Of Care Ultrasound ◽  
Global Rating ◽  
Clinical Integration ◽  
Valuable Adjunct ◽  
Global Ratings ◽  
Group 1

Abstract Background: Point-of-care ultrasound (PoCUS) can serve as a valuable adjunct for patient care. This study aimed to investigate the clinical integration of PoCUS of the first post-graduate year (PGY-1) residents after a PoCUS curriculum.Methods: The prospective study was conducted at the emergency department (ED) of the National Taiwan University Hospital between July 2015 and October 2017. Every PGY-1 resident had one-month ED training and a PoCUS curriculum was implemented during the first week. The post-training objective structured clinical examination global ratings were obtained, as well as the sonographic examinations the residents performed on shifts. Four groups could be identified: group 1 performed PoCUS before and after the curriculum; group 2 performed only after the curriculum; group 3 performed only before the curriculum; the last did not perform any examinations.Results: 239 residents participated. The median global rating was 4 (interquartile ranges, 4-5). After the curriculum, an increasing number of residents integrated PoCUS into patient care (64 vs. 170, p=0.037) with acceptable image quality. No differences existed in the global ratings between 4 groups, however, nearly 30% of residents did not use PoCUS during their shifts. Group 1 performed more cases with better image quality and using ≥2 US applications (8/100 vs. 82/359, p=0.0009), compared with those before the curriculum. Comparing with those in groups 1 and 2, group 1 performed more cases (p<0.0001) with better image quality (p=0.03). “No suitable cases” (25/69), and “choosing other imaging priorities” (43/69) were the main feedbacks in groups 3 and 4.Conclusions: A short focused US training had an immediate positive impact on OSCE global ratings and integration of PoCUS of PGY-1 residents in the ED. The global ratings could not predict whether to use PoCUS in the ED practice. Although the working climate was designated to be friendly for utilizing US, a substantial percentage of residents did not use PoCUS. Further longitudinal studies would be needed for the sustained effects of the curriculum.Trial registration: NCT03738033.

scholarly journals Detection of Type B Aortic Dissection in the Emergency Department with Point-of-Care Ultrasound

2019 ◽  
Vol 3 (3) ◽  
pp. 202-207 ◽  
Author(s):  
Emily Earl-Royal ◽  
Phi Nguyen ◽  
Al’ai Alvarez ◽  
Laleh Gharahbaghian
Keyword(s):  
Emergency Department ◽  
Aortic Dissection ◽  
Point Of Care ◽  
Case Reports ◽  
Point Of Care Ultrasound ◽  
Type B ◽  
Type B Aortic Dissection ◽  
Diagnostic Reliability ◽  
Multiple Case ◽  
Stanford Type B

Aortic dissection (AD) is a rare, time-sensitive, and potentially fatal condition that can present with subtle signs requiring timely diagnosis and intervention. Although definitive diagnosis is most accurately made through computed tomography angiography, this can be a time-consuming study and the patient may be unstable, thus preventing the study’s completion. Chest radiography (CXR) signs of AD are classically taught yet have poor diagnostic reliability. Point-of-care ultrasound (POCUS) is increasingly used by emergency physicians for the rapid diagnosis of emergent conditions, with multiple case reports illustrating the sonographic signs of AD. We present a case of Stanford type B AD diagnosed by POCUS in the emergency department in a patient with vague symptoms, normal CXR, and without aorta dilation. A subsequent review of CXR versus sonographic signs of AD is described.

POCUS or no POCUS

2020 ◽  
Vol 24 (2) ◽  
pp. 127-131
Author(s):  
Mohamed S. Eissa ◽  
Hesham Talab ◽  
Mayar Talab
Keyword(s):  
Patient Outcome ◽  
Clinical Management ◽  
Training Programs ◽  
Point Of Care ◽  
Point Of Care Ultrasound ◽  
New Generation ◽  
Critical Situations

The use of point-of-care ultrasound (POCUS) in the perioperative setting by the anesthesiologists has now become a new demand. It has been proven to improve the patient outcome and to guide clinical management in critical situations. The anesthesiologists are still struggling to obtain POCUS skills and become POCUS competent. In Canada, many institutions have started to integrate POCUS into their anesthesiology training programs to build up a new generation of POCUS trained anesthesiologists.

scholarly journals Handheld Point-of-Care Ultrasound Probes: The New Generation of POCUS

2020 ◽  
Vol 34 (11) ◽  
pp. 3139-3145
Author(s):  
Yanick Baribeau ◽  
Aidan Sharkey ◽  
Omar Chaudhary ◽  
Santiago Krumm ◽  
Huma Fatima ◽  
...  
Keyword(s):  
Point Of Care ◽  
Point Of Care Ultrasound ◽  
New Generation ◽  
Ultrasound Probes
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