Robotic auscultation has the potential to solve problems associated with gender issues by allowing examinations that eliminate need for physical contact between doctor and patient. Aiming toward a robotic device capable of safely acquiring chest back auscultatory sounds simultaneously, this study aimed develop unique actuator-less hugging mechanism multi-acoustic sensor array can be transformed wrap around fit patient’s body shape. The consists twin-articulated arm multi-layer gear coupling...

A focus control method based on time reversal aided by numerical simulation was implemented to correct focal errors in heterogeneous media using a 56-element phased array transducer at frequency of 2 MHz. Two types acrylic phantom were employed mimic the acoustic heterogeneities human body. Focal significantly reduced applying phase correction. Moreover, effects amplitude correction, configuration transducer, and transverse wave propagation an elastic body examined improve quality. The...

Ultrasound (US) imaging is a first-line medical modality for detecting thyroid cancer; however, it suffers from operator-dependent variability in image quality and diagnostic accuracy. To address this issue, various robotic US systems have been proposed to assist examinations. Nevertheless, ensuring an appropriate contact force that balances patient safety during scanning remains challenge. Thyroid procedures require physicians be very cautious applying pressure the neck due sensitivity of...

We propose a non-invasive ultrasound theragnos tic system that tracks movement in an affected area (kidney stones, the present study) by irradiating with high intensity focused (HIFU). In paper, concept behind novel medical support integrates therapy and diagnostics (theragnostics) is illustrated. The re quired functions for proposed are discussed overview of constructed configuration problems associated kidney stone motion tracking ultrasonography described. order to overcome these...

Applying ultrasound (US)-guided high-intensity focused (HIFU) therapy for kidney tumours is currently very difficult, due to the unclearly observed tumour area and renal motion induced by human respiration. In this research, we propose new methods which track indistinct compensate respiratory US-guided HIFU treatment.For tracking areas, detect US speckle change created irradiation. other words, thermal ablation can coagulate tissue in an intraoperatively coagulated lesion (CL) used as a...

High intensity focused ultrasound (HIFU) treatment that employs microbubbles to provide enhanced heating has been investigated in order develop a less invasive and more rapid tumor ablation therapy. It demonstrated have significant effects on enhancement vitro vivo experiments, however propagation could be disturbed when there are too many between the transducer focus. In this study, we method make clear pass way for obtaining by using just at focus, thus avoiding from target region. method,...

An intracorporeal microrobot will not become practical unless an efficient and low invasive driving device is developed. This paper presents a new technology to drive medical microrobots experimental results which confirm the principle. Thrust force up 1 N was measured when gap width small sliding speed high. While it pointed out that rupture of fluid film may limit magnitude thrust force. The study also confirms as arises only due hydrodynamic action direct contact does arise, operation...

Ultrasound (US)-mediated gene transfection in the presence of microbubbles is a recently developed and promising non-viral delivery method. Optimising parameters used ultrasonic urgently required order to realise higher efficiencies clinical settings. This study examined effect ultrasound exposure on plasmid DNA mouse embryonic fibroblast cell lines using perfluorobutane bubbles. Variations US intensity (0–11 W/cm2), pulse repetition frequency (PRF, 50–50,000 Hz), duty ratio (10 50%), time...

Functional ultrasound (fUS) imaging is a method for visualizing deep brain activity based on cerebral blood volume changes coupled with neural activity, while functional MRI (fMRI) relies the blood-oxygenation-level-dependent signal activity. Low-frequency fluctuations (LFF) of fMRI signals during resting-state can be measured by (rsfMRI), which allows whole brain, and distributions network (RSN) then estimated from these using independent component analysis (ICA). This procedure provides an...

In recent years, endovascular treatments, in which a treatment device such as catheter is inserted into blood vessel to directly approach lesion, have become increasingly popular worldwide. For safer and further optimization of medical devices, deeper understanding the vascular biotribology biomodels, vessels an appropriate evaluation method are required. This review paper presents current state research on friction between intravascular biomodel. We experimental conditions, including sample...

Vascular diseases, such as ischemic heart disease, infarction, aneurysms, stroke and stenosis are a leading cause of serious long-term disability their mortality rate is high that cancers in many countries. Recently, neurovascular intervention using catheters minimally-invasive endovascular technique used to treat vascular disease the brain, navigation system for has been developed facilitate surgical planning provide intra-operative assistance. Since mechanical properties catheter play an...

The non-invasive ultrasound theragnostic system, we propose, tracks and follows movement in an affected area -kidney stones here-, while High-Intensity Focused Ultrasound (HIFU) is irradiated onto the area. In this paper, concept of novel medical support which integrates therapy diagnostics, illustrated at first. Secondly, structuring required functions for proposed system discussed. Third, overview constructed configuration illustrated. Fourth, problem stone motion tracking by...

Various catheter simulators using a computer or blood vessel biomodels have been developed for training of medical students and young physicians.Moreover, we system to simulate guidewire in vessels that uses both numerical analysis experimental observation the quantitative treatment technique, surgical planning, intra-operative assistance, facilitate design new guidewires.However, not limited our group, there is lack studies evaluating motions their interaction vessel.Therefore, present...

We propose an automated needle hydrophone-based scanning system to measure high-resolution 3-D acoustic pressure distributions generated by high-intensity focused ultrasound (HIFU). The hardware consists of a host computer, subsystems for HIFU generation, and oscilloscope sample the response from sensor in water tank. Software was developed control subsystems, search initial scan position, design path volume. A preoperative plan with three perpendicular planes is used manipulate position...

The authors have developed a bed-type non-invasive ultrasound theragnostic system (NIUTS) that compensates for movement by tracking and following the area to be treated stereo imaging while irradiating high-intensity focused (HIFU) onto affected area. In this paper, we propose novel robust template matching method track follow body targets, which include tumors stones NIUTS. proposed could applied motion of real human kidney based on images, is first successful report as far I know. This...

Since most developed countries are facing an increase in the number of patients per healthcare worker due to a declining birth rate and ageing population, relatively simple safe diagnosis tasks may need be performed using robotics automation technologies, without specialists hospitals. This study presents automated robotic platform for remote auscultation, which is highly cost-effective screening tool detecting abnormal clinical signs.The composed 6-degree-of-freedom cooperative arm, LiDAR...

The integrated non-invasive ultrasound diagnosis and treatment we propose tracks follows movement in an affected area – kidney stones here ” while High-Intensity Focused Ultrasound (HIFU) is irradiated onto the area. High-speed CCD camera cannot be used because must avoid damaging healthy tissue. Servoing error mainly due to imaging its dead time become serious problems, unlike when a high-speed used. We feed-forward control using semi-regular focusing on enhancing servoing performance.