Wireless Handheld Research Articles

Wireless Ultrasound Devices in Anatomy Education: Insights from Medical Undergraduates

AbstractPoint-of-care ultrasound has become an important part of patient care, and the increased use thereof has led to a greater demand for the integration of ultrasound training in the early medical undergraduate curriculum. The use of handheld wireless ultrasound devices is not currently integrated within the undergraduate anatomy medical curriculum of Stellenbosch University and the additional value of wireless ultrasonography, in relation to the clinical practice of anatomical knowledge, therefore, warranted further investigation. This study aimed to explore undergraduate medical students’ perceptions of the use of handheld wireless ultrasound scanning to enhance knowledge and understanding of anatomy for clinical application. During the dissection sessions, students visualized anatomical structures of the musculoskeletal system, by scanning themselves, using handheld, wireless ultrasound devices. After the session, an electronic survey was distributed to the students and three ultrasonography questions were included in the routine practical test. Eighty-one survey responses were collected, with 41 of those responses being completed. The highest student agreement in the Likert scale survey was observed when assessing the convenience of practice of wireless ultrasound devices, while the lowest agreement was reported for confidence in the participant’s capability of generating ultrasound images. Two main themes were developed from the open-ended questions at the end of the survey: the instructional integration of ultrasound and ultrasound within the clinical setting. This research demonstrated that readily available access to handheld wireless ultrasound scanning has the potential to enhance students’ longitudinal learning experience and improve anatomical comprehension. As future clinicians, improved understanding could aid ultrasound application in the clinical realm.

Usability, Ergonomics, and Educational Value of a Novel Telestration Tool for Surgical Coaching: Usability Study.

Telementoring studies found technical challenges in achieving accurate and stable annotations during live surgery using commercially available telestration software intraoperatively. To address the gap, a wireless handheld telestration device was developed to facilitate dynamic user interaction with live video streams. This study aims to find the perceived usability, ergonomics, and educational value of a first-generation handheld wireless telestration platform. A prototype was developed with four core hand-held functions: (1) free-hand annotation, (2) cursor navigation, (3) overlay and manipulation (rotation) of ghost (avatar) instrumentation, and (4) hand-held video feed navigation on a remote monitor. This device uses a proprietary augmented reality platform. Surgeons and trainees were invited to test the core functions of the platform by performing standardized tasks. Usability and ergonomics were evaluated with a validated system usability scale and a 5-point Likert scale survey, which also evaluated the perceived educational value of the device. In total, 10 people (9 surgeons and 1 senior resident; 5 male and 5 female) participated. Participants strongly agreed or agreed (SA/A) that it was easy to perform annotations (SA/A 9, 90% and neutral 0, 0%), video feed navigation (SA/A 8, 80% and neutral 1, 10%), and manipulation of ghost (avatar) instruments on the monitor (SA/A 6, 60% and neutral 3, 30%). Regarding ergonomics, 40% (4) of participants agreed or strongly agreed (neutral 4, 40%) that the device was physically comfortable to use and hold. These results are consistent with open-ended comments on the device's size and weight. The average system usability scale was 70 (SD 12.5; median 75, IQR 63-84) indicating an above average usability score. Participants responded favorably to the device's perceived educational value, particularly for postoperative coaching (agree 6, 60%, strongly agree 4, 40%). This study presents the preliminary usability results of a novel first-generation telestration tool customized for use in surgical coaching. Favorable usability and perceived educational value were reported. Future iterations of the device should focus on incorporating user feedback and additional studies should be conducted to evaluate its effectiveness for improving surgical education. Ultimately, such tools can be incorporated into pedagogical models of surgical coaching to optimize feedback and training.

A compact SIW dual-functional design with integrated filter and self-diplexing antenna

ABSTRACT This paper proposes a compact dual-functional design (DFD) which integrates a bandpass filter (BPF) and self-diplexing antenna in a half-mode substrate-integrated waveguide (HMSIW) cavity. The design consists of four eighth-mode SIW (EMSIW) sub-cavities that are formed by etching three slots on an HMSIW cavity. Two of the sub-cavities are coupled to form a BPF with low insertion loss with a controllable transmission zero and a wide out-of-band rejection > 33 dB. In contrast, the other two sub-cavities are used to create a self-diplexing antenna with wide frequency tunability (2.8–5.0 GHz) with two additional narrow slots and high isolation (>22 dB). Detailed parametric studies confirmed that tuning of self-diplexing antenna has no significant impact on the performance of integrated BPF. An equivalent circuit model of the design is developed and validated with simulation and measurement results. The proposed design has a simple and compact structure, good isolation, and controllability, making it suitable for modern handheld wireless systems.

Reliability and accuracy of scoliotic parameters on using a wireless handheld 3D ultrasound for children with adolescent idiopathic scoliosis: a pilot study.

To report the accuracy and reliability of Cobb angle (CA), axial vertebral rotation (AVR), kyphotic and lordotic angles (KA and LA) measurements on using a new 3D ultrasound (US) system. Forty participants (34F, 6M, aged 14.0 ± 2.3 years) were recruited. The first 20 participants were scanned by the validated US system and the new US system. The other 20 participants were scanned with the new US system only. Two raters (R1 and R2) performed the measurements: R1 has 10 years of experience in radiology but is new in ultrasound scoliosis, while R2 has 30 years of scoliosis experience. All US images were measured twice by R1, and once by R2. Forty posteroanterior and 30 lateral standing radiographs were obtained and measured once by R1. Statistical analysis consisted of mean absolute difference (MAD), intraclass correlation coefficient (ICC(2,1)), and Bland-Altman plots. R1 showed excellent intra-rater and inter-rater reliability for US measurements with ICCs(2,1) ≥ 0.91. The inter-method reliability was good between the two US systems for all parameters with ICCs(2,1) ≥ 0.85 and maximum MAD of 3.4°. The new US showed good reliability and accuracy compared to radiographs for CA, AVR and KA with ICCs(2,1) ≥ 0.81 and maximum MAD of 5.8°, but poor results for LA with ICCs(2,1) of 0.27-0.35 and MADs of 14.0°-15.4°. The new 3D US system showed good reliability and accuracy for CA, AVR and KA measurements, but a large measurement discrepancy on LA. A new measurement method for US LA may need to investigate.

Development of Microwave Components Using Additive Manufacturing: A Review

In modern telecommunication, there is a growing demand for lightweight, low-cost, and compact microwave components with high transmission functionalities, especially for applications requiring multiple high-performance antennas to provide multi-beam capabilities. Additive manufacturing (AM), also known as three-dimensional (3D) printing, has emerged as a promising solution to meet these demands due to its simplicity, fast prototyping capabilities, and enhanced fabrication accuracy. AM technology has found widespread adoption across various industries, including space-borne, satellite, handheld wireless systems, biomedical, mechanical, electrical, optical, and environmental applications. In particular, AM-based microwave components offer significant advantages, including reduced weight compared to traditional aluminum prototypes, with savings of up to two-thirds of the weight. This paper presents a comprehensive review of the AM process, materials used, and microwave components developed using AM technology. The review encompasses various aspects, including fabrication techniques, performance characteristics, and applications of AM-based microwave components, providing insights into the advancements, and potential future directions of this innovative approach.

Wireless handheld ultrasound for internal jugular vein assessment in pediatric patients.

Rapid evolution of ultrasound technology has allowed widespread use of handheld ultrasound devices (HHUDs) for many possible applications. Along with the adult population, the use of HHUDs for Point of Care Ultrasound (POCUS) in pediatric medicine has been increasing over the last few years. However, pediatric-specific literature is still scarce on mobile vascular ultrasound. To evaluate diagnostic capabilities of Vscan Air™ in comparison with high-end ultrasound for the assessment of the internal jugular vein in children and adolescents. 42 Internal Jugular Veins (IJVs) of 21 pediatric patients were scanned by an experienced examiner using a WLAN-supported handheld ultrasound device (Vscan Air™) and high-end cart-based ultrasound (LOGIQ E9) as reference. B-Mode and Color-coded Doppler (CCDS) were performed and compared. Image quality was assessed using a score of 0 to 5 and statistically analyzed. Results were interpreted independently by two readers in consensus. 21 patients (2-17 years; mean 11,00±4,5 years; female n = 11, male n = 10) were examined. The rating score never dropped below 3 for both devices. The median score evaluation of B-Mode and CCDS for the high-end device was 5.00, of Vscan Air™ 5.00 for B-Mode and 4.00 for CCDS. A significant difference was shown between the two devices in the evaluation of CCDS. Vscan Air™ ultrasound device allows sufficient assessability of the IJV in pediatric patients, opening up new possibilities for fast and mobile POCUS of cervical veins and potential guidance of central venous catheter placement.

Gestures Controlled Robot

Abstract: The main abstract of the project work is to control robot with gestures using hand. There are two main components of the system: The accelerometer depends upon the gestures of the hand. Through accelerometer, a passage of data signal is received and it is processed with the help of Atmega328 microcontroller. The microcontroller gives command to the robot to move in the desired direction. The basic working principle for the robot is passage of the data signals of accelerometer readings to the Arduino board fitted on the bot. The program compiled in that Atmega328 runs according to that value, which make the bot function accordingly. While we have used three-axis accelerometer. In which, one axis will control the speed in forward or backward direction and other axis will control the turning mechanism. Accelerometer-based gesture control is studied as a supplementary or an alternative interaction modality. Gesture commands freely trainable by the user can be used for controlling external devices with handheld wireless sensor unit.

Comparison of wireless handheld ultrasound and high-end ultrasound in pediatric patients with venous malformations - First results.

To evaluate the usefulness of handheld ultrasound in comparison with high-end ultrasound for lesion evaluation before and after sclerotherapy in pediatric patients with venous malformations (VMs). 10 pediatric patients prior to and after sclerotherapy were scanned by an experienced examiner using handheld ultrasound (Vscan AirTM) and high-end ultrasound (LOGIQ E9/E10) as reference. Patients with associated venous thromboses and intralesional aneurysms had been excluded. Results were interpreted independently by two readers in consensus. 10 patients (4-17 years; 10.0±4.32 years; female n = 6, male n = 4) with 10 VMs (4 of the head and neck region, 4 of the upper and 2 of the lower extremities) were examined. 7 phleboliths were detected. The average rating score achieved by the high-end device never was less than 4, by Vscan AirTM never less than 3. An exception was the assessment of AV fistulas. In comparison with the evaluation of variables examined, we found a significant difference between the high-end scanner and the handheld device regarding the achieved image quality. Vscan AirTM ultrasound device allows new possibilities for procedure planning and post-procedural control of pediatric patients with VMs.

Initial description of the novel handheld wireless ultrasound device TE Air with Doppler and Color Duplex imaging.

To test and initially describe a new handheld wireless ultrasound technique (TE Air) for clinical use. In this pilot study, the new ultrasound device TE Air from Mindray was used to examine the hepatic and renal vessels of healthy volunteers for first impressions. The probe has a sector transducer with a frequency range of 1.8-4.5 MHz. The B-mode and color-coded doppler sonography (CCDS) scanning methods were used. A high-end device from the same company (Resona 9, Mindray) was used as a reference. The results were evaluated using an image rating scale ranging from 0 to 5, with 0 indicating not assessable and 5 indicating without limitations. Altogether, 61 participants (n = 34 female [55.7%], n = 27 male [44.3%]), age range 18-83 years, mean age 37.9±16.5 years) could be adequately studied using TE AIR and the high-end device. With one exception, the image quality score for TE Air never fell below 3 and had a mean/median scored of 4.97/5.00 for the B-mode, 4.92/5.00 for the color flow (CF) mode, and 4.89/5.00 for the pulse wave (PW) mode of the hepatic vein, 4.90/5.00 for the portal vein, 4.11/4.00 for the hepatic artery, and 4.57/5.00 for the renal segmental artery. A significant difference in the assessment of flow measurement of the hepatic artery and renal segmental arteries was found between TE AIR and the high-end device. TE Air represents a new dimension in point-of-care ultrasound via wireless handheld devices. Especially, its flow measurement ability offers a relevant advantage over other available handheld models. TE Air provides a formally sufficient image quality in terms of diagnostic significance.

A Tablet-Operated Portable Wireless Sensing Platform for Field Simultaneous Rapid Detection of both Cd (II) and Pb (II) Using CaAl-Layered Double Hydroxide Nanocomposite Modified Integrated Screen-Printed Three-Electrode

It’s very essential to exploit a portable wireless integrated sensing platform for field simultaneous, on-site detection of heavy metal ions pollution that has been exhibited to Serious ecological and health risks even under trace levels, including Cd (II) and Pb (II) ions. In this work, we developed a portable sensing platform, consisting of an integrated screen-printed electrode (SPE) with the calcium/aluminum-layered double hydroxide (CaAl-LDH) nanocomposite based on carboxyl functionalized multi-walled carbon nanotubes (MWCNTs-COOH), a hand-held wireless electrochemical potentiostat and a tablet with a specially designed app, for field simultaneous rapid detection of both Cd (II) and Pb (II) in water environmental sample. The CaAl-LDH was produced through a facilely hydrothermal method, and the CaAl-LDH nanocomposite with MWCNTs-COOH was prepared by a one-step ultrasonic route, which demonstrated superior sensing performance for simultaneous determination of both Cd (II) and Pb (II) with a broad detection range (2–250 μg L−1 for Cd (II) and 5–250 μg L−1 Pb (II)) and low limit of detection (LOD) (0.96 μg L−1 Cd (II) and 0.74 μg L−1 for Pb (II)).Furthermore, the proposed tablet-operated portable wireless sensing platform was utilized for detection of both Cd (II) and Pb (II) in farmland irrigation canals with acceptable recoveries.

Preliminary study to evaluate the use of fast abdominal ultrasonography of horses with colic in first opinion ambulatory practice

SummaryBackgroundColic is the commonest emergency in first opinion equine practice. Early referral is important for horses requiring surgery. Fast localised abdominal ultrasonography of horses (FLASH) is frequently used as a diagnostic tool in the investigation of colic at referral hospitals, but its use in first opinion practice has not been evaluated.ObjectiveTo assess the value of FLASH scanning in the primary assessment of horses with colic in the field, using a portable wireless ultrasound system.Study designProspective study (2018–2021).MethodsAny horse examined for colic as an emergency in a first opinion ambulatory practice was eligible for inclusion in the study. A FLASH examination was performed using a wireless handheld ultrasound scanner, with the images displayed on a smartphone or tablet. The findings on FLASH scans and the outcome of the case (recovered, referred for surgery or euthanised without referral) were recorded.ResultsIn total, 135 equids with acute colic were evaluated. Of the 135 horses, 49 (36%) had an abnormal finding on FLASH scanning, including distended loops of small intestine (n = 34), thickened small intestinal walls (n = 23) and/or distension of the stomach (n = 7). Reduced small intestinal motility was recorded in 52 animals (38%). Follow‐up information was available in all animals: 50 (37%) were euthanised due to clinical deterioration and the owners' decision not to undertake surgery; 85/135 (63%) survived, including 5/85 (6%) that underwent surgery and 80/85 (94%) that resolved with medical management.Main limitationsSmall number of cases. Lack of results of post‐mortem examination of horses that were euthanised. Potential selection bias.ConclusionThe FLASH technique can be valuable in the primary assessment of horses with colic in first opinion ambulatory practice. Further evaluation with more cases is required.

Gesture-Controlled Rover: Intuitive Human Gesture Interaction for Remote Robot Control

The Gesture Controlled Rover is a robot that responds to simple human motions. Robots these days are playing quite a significant role in day-to-day life. This work aims to propose a new technique to operate a robot by utilizing gestures, as well as to develop a remote-controlled robot that can be controlled using only gestures from a distance. A gesture gadget is to be worn by a user that has a sensor attached to it. As instructed by this user, the sensor records the movement made and thus the robot will move in the same instructed direction. This concept can be used to create a robot whose navigation can be automated. Gesture commands that the user can freely train and can be utilized to control external devices using a handheld wireless sensor unit. Hand movements control the accelerometer.

Portable Wireless Handheld Ultrasound Linear Series UProbe-L5 and Hitachi Aloka F37 Ultrasound Reliability Test

Portable Wireless Handheld Ultrasound Linear Series UProbe-L5 and Hitachi Aloka F37 Ultrasound Reliability Test

Wireless handheld focused ultrasound in student teaching during the COVID-19 pandemic: Initial results of a pilot study1.

The study aim was to investigate the use of a novel device, the Vscan Air™, for rapidly and effectively performing ultrasound in student teaching during the COVID-19 pandemic. As part of the ultrasound practical course with integrated hands-on activity required by the regular medical curriculum, 100 medical students were instructed in the use of the Vscan Air™, including duplex mode. They then evaluated the quality of the ultrasound images obtained by the Vscan Air™ from previously selected organs. 100 students were interviewed (female n = 68, male n = 32; age >18 years n = 100). The rated image quality never fell below a mean of 3 for the examined organs and portal vein flow (liver 4,58; spleen 3,99; kidneys 4,29; aorta 4,16; Douglas/rectovesical space 4,14; portal vein 4,43; pancreas 3,53; Focused Assessment with Sonography for Trauma 4,38). Scores below 3 were found sporadically in ultrasounds of the spleen (n = 4), kidneys (n = 3), Douglas/rectovesical space (n = 2), and pancreas (n = 15). The liver was rated the lowest for 59 ratings. The portal vein was evaluated in 68 cases. The hepatic artery and hepatic veins could be also visualized in all 68 examinations. The aorta was evaluated in 62 cases. The Vscan Air™ technology offered adequate image quality and provided a new, fast and patient-oriented technique to support continuous ultrasound examinations and education of students, especially during a pandemic. Particularly noteworthy is the uncomplicated compliance with the required high level of hygiene.

A cadaveric study examining the accuracy of wireless handheld guided ultrasound injections versus blind injections in the flexor tendon sheath

A cadaveric study examining the accuracy of wireless handheld guided ultrasound injections versus blind injections in the flexor tendon sheath

From hand-held radio to ride-hailing platforms: Research on a local technical network of taxi drivers in China

This paper investigates how Chinese taxi drivers utilize low-tech equipment, such as handheld radios and mobile phone services, to form local ride-hailing networks. Previous studies have analyzed how Internet platforms like Didi Chuxing have reshaped labor relations through technology and policies, but they have ignored the fact that outside metropolitan areas, traditional technological solutions, such as on-call radio platforms, have not been replaced by the rapidly expanding ride-hailing platforms. Therefore, to outline China’s diverse ICT practice environment, this paper focuses on a case study in two Chinese towns (Laizhou, Shandong; Ziyang, Sichuan), shifting the attention from metropolitan areas to neglected fourth- and fifth-tier cities. After reviewing the previous advancements in mobile communication technology, we discuss the economic, cultural, and social motivations behind the use of ‘low-tech’ devices and cooperative services by the Chinese taxi drivers in question.

Paradigm Shift from Telemedicine to Autonomous Human Health and Performance for Long-Duration Space Missions

This paper discusses a Prognostics and Health Management [PHM]-based approach to implementing Human Health & Performance [HH&P] technologies. Targeted specifically are NASA Autonomous Medical Decision and Integrated Biomedical Informatics of Human Health, Life Support, and Habitation Systems in Technology Area 06 [TA 06] of NASA integrated technology roadmap [April 2012]. The proposed PHM-based implementation is to bridge PHM, an engineering discipline, to the HH&P technology domain to mitigate space travel risks by focusing on efforts to reduce countermeasure mass and volume, and drive down risks to an acceptable level. NASA Autonomous Medical Decision technology is based on wireless handheld devices and is a result of a necessary paradigm shift from telemedicine to HH&P autonomy. The Integrated Biomedical Informatics technology is based on Crew Electronic Health Records [CEHR], equipped with a predictive diagnostics capability developed for use by crew members rather than by healthcare professionals. This paper further explores the proposed PHM-based solutions for crew health maintenance in terms of predictive diagnostics to provide early and actionable real-time warnings to each crew member about health-related risks and impending health problems that otherwise might go undetected. The paper also discusses the paradigm’s hypothesis and its innovation methodology, as implemented with computed biomarkers. The suggested paradigm is to be validated on the International Space Station [ISS] to ensure that crew autonomy in terms of the inherent predictive capability and two-fault-tolerance of the methodology become the dominant design drivers in sustaining crew health and performance.

A Cadaveric Study Examining the Accuracy of Wireless Hand-Held Guided Ultrasound Injections Versus Blind Injections in the Flexor Tendon Sheath

Hand-held ultrasound (HHUS) is gaining popularity among clinicians. Although its use for procedural guidance could have several advantages in hand surgery, other surgeons may wonder about its added benefits. This cadaveric study aimed to examine the hypothesis of increased accuracy of wireless HHUS-guided injections versus that of blind injections into the flexor sheath. Our series included 20 fresh cadaveric hands with 80 fingers randomly assigned to 2 groups. In group A, 10 hands were randomly assigned to receive a landmark injection and then received a blinded injection to the flexor tendon sheath (FTS). In group B, 10 hands were blinded in the same manner and received an ultrasound-guided injection with HHUS. Methylene blue was injected, and anatomic dissection was performed to evaluate the injection accuracy based on the dye's filling pattern in the FTS as stage I (no filling), stage II (<50% filling), and stage III (>50% filling). Statistical analysis was performed, and P <.05 indicated a significant difference. One finger was excluded because of severe Dupuytren contracture. In group A, 39 blind injections of the FTS were performed, with 82% (32/39) fingers achieving stage III filling. In group B, 40 ultrasound-guided FTS injections were performed, with 90% (36/40) of fingers achieving stage III filing. Our study did not reveal any superiority in accuracy when ultrasound guidance was used (P=.35). Hand-held ultrasound-guided FTS injections were not more accurate than blind injections performed by an experienced hand surgeon. These findings suggest that blind injections can be used as routine practice when performed by experienced operators to treat trigger finger. However, the use of HHUS may offer other advantages in hand surgery practice. Ultimately, choosing to perform HHUS-guided injection versus blind injection to treat trigger finger depends on the surgeon's experience and preference for a particular technique.

Photocurrent-Polarity-Switching Photoelectrochemical Biosensor for Switching Spatial Distance Electroactive Tags.

This work presents a photocurrent-polarity-switching-based photoelectrochemical (PEC) biosensing platform for ultrasensitive detection of microRNA-21 (miR-21) through target-triggered catalytic hairpin assembly (CHA) for modulation of methylene blue (MB) and ferrocene (Fc) positional configurations using double-shelled Cu-doped ZnS nanocages (NCs)-Au nanoparticles (NPs) as photoactive materials. In the presence of miR-21, the assembly of MB-labeled HP1 and Fc-labeled HP2 leads to the generation of a large amount of double-stranded DNA (HP1-HP2), which pushes MB away from the electrode surface and brings Fc close to the electrode surface, resulting in effectively quenching the enhanced PEC signal to activate the photocurrent-polarity-switching system. Benefiting from the distance-controllable strategy, the designed PEC bioanalysis can effectively eliminate false-positive and false-negative signals due to the change of different signal expression patterns (from traditional the "signal-on" mode to the photocurrent-polarity-switching mode), thereby significantly improving the sensing specificity and sensitivity. The proposed PEC sensing system exhibited satisfying photocurrent responses toward target miR-21 within the working range from 1.0 fM to 1 nM at a low limit of detection (LOD) of 0.58 fM. More importantly, we demonstrated the successful integration of the proposed PEC biosensor with a handheld wireless device for instant detection of miR-21 concentrations in practical samples.

Acceptability and Feasibility of a Low-Cost Device for Gestational Age Assessment in a Low-Resource Setting: Qualitative Study

Ultrasound for gestational age (GA) assessment is not routinely available in resource-constrained settings, particularly in rural and remote locations. The TraCer device combines a handheld wireless ultrasound probe and a tablet with artificial intelligence (AI)-enabled software that obtains GA from videos of the fetal head by automated measurements of the fetal transcerebellar diameter and head circumference. The aim of this study was to assess the perceptions of pregnant women, their families, and health care workers regarding the feasibility and acceptability of the TraCer device in an appropriate setting. A descriptive study using qualitative methods was conducted in two public health facilities in Kilifi county in coastal Kenya prior to introduction of the new technology. Study participants were shown a video role-play of the use of TraCer at a typical antenatal clinic visit. Data were collected through 6 focus group discussions (N=52) and 18 in-depth interviews. Overall, TraCer was found to be highly acceptable to women, their families, and health care workers, and its implementation at health care facilities was considered to be feasible. Its introduction was predicted to reduce anxiety regarding fetal well-being, increase antenatal care attendance, increase confidence by women in their care providers, as well as save time and cost by reducing unnecessary referrals. TraCer was felt to increase the self-image of health care workers and reduce time spent providing antenatal care. Some participants expressed hesitancy toward the new technology, indicating the need to test its performance over time before full acceptance by some users. The preferred cadre of health care professionals to use the device were antenatal clinic nurses. Important implementation considerations included adequate staff training and the need to ensure sustainability and consistency of the service. Misconceptions were common, with a tendency to overestimate the diagnostic capability, and expectations that it would provide complete reassurance of fetal and maternal well-being and not primarily the GA. This study shows a positive attitude toward TraCer and highlights the potential role of this innovation that uses AI-enabled automation to assess GA. Clarity of messaging about the tool and its role in pregnancy is essential to address misconceptions and prevent misuse. Further research on clinical validation and related usability and safety evaluations are recommended.