National Central University

Industrial Technology Research Institute

National Taiwan University

Wan-Hsin Hsieh

Men-Tzung Lo

Chen Lin

Yi-Chung Chang

Hui-Hsin Lu

Hsiang-Chih Chang

Lian-Yu Lin

Matthew Huei-Ming Ma

Kun Hu

Chih-Yuan Wang

Norden E Huang

Shih-Ann Chen

Yenn-Jiang Lin

Patrick Chow-In Ko

Yung-Hung Wang

Zong-Yi Hsiao

Wen-Chu Chiang

Ke-Hsin Hsu

Hung-Yi Lee

Yu-Yao Wang

Hsu-Wen Vincent Young

The present disclosure provides a tissue imaging method, including: inserting an electronic probe into a lesion area of a patient and ablating tissue of the lesion area; capturing a first image including the lesion area by using an imaging apparatus; vibrating the electronic probe to generate displacement of at least a portion of the tissue of the lesion area, and capturing a second image including the lesion area by using the imaging apparatus; generating a correlation image according to a correlation between the first image and the second image; and computing an ablation boundary according to the correlation image.

Tissue imaging method

A needle guide system is provided. The needle guide system includes a puncture device, an ultrasound transducer, a first orientation detector, a second orientation detector, a proximity detector and a processor. The ultrasound transducer is configured to obtain an ultrasound image. The first orientation detector is disposed on the puncture device, and the second orientation detector is disposed on the ultrasound transducer. The proximity detector is disposed on at least one of the puncture device and the ultrasound transducer, configured to obtain a relative distance between the puncture device and the ultrasound transducer. The processor is configured to obtain a spatial relationship between the puncture device and the ultrasound transducer by using the first orientation detector, the second orientation detector, and the proximity detector, and predict a trajectory of the puncture device in the ultrasound image according to the spatial relationship. In addition, a medical intervention system is also provided.

Needle guide system and medical intervention system

This invention discloses a system and a method for extracting VF signal in ECG recorded during uninterrupted CPR. The present invention provides a method for extracting a Ventricular fibrillation (VF) signal in Electrocardiography (ECG), comprising: receiving an ECG signal; adding a plurality of shadowing functions to the ECG signal, to obtain a plurality of modification signals; decomposing the plurality of modification signals by using an Empirical Mode Decomposition (EMD) method, to generate a plurality of Intrinsic Mode Functions (IMFs); calculating the sum of IMFs in different frequency regions based on time sequence, dividing by a number of the shadowing signal, to obtain a plurality of modification intrinsic mode functions; combining the plurality of modification IMFs with the same property, to obtain a shape function; modeling the shape functions to obtain a compression signal; and subtracting the compression signal from the ECG signal based on time sequence, to obtain the VF signal.

Method and system for extracting ventricular fibrillation signals in electrocardiogram using spline interpolation with uniform phase ensembles

This invention discloses a system and method for extracting VF signal in ECG recorded during uninterrupted CPR. The method and system applies an adaptive algorithm incorporating the EMD and least mean square (LMS) filtering to effectively model the CPR artifacts such as chest compression signals. Thus, A VF signal in ECG recorded during uninterrupted CPR can be extracted without deteriorating the reliability of the waveform parameter (i.e. AMSA) of shockability. The present invention enables uninterrupted CPR performed during recording ECG for accessing the shockability, so that an increase the probability of successful resuscitation is achieved.

Method and system for extracting ventricular fibrillation signals in electrocardiogram

A computer-assisted method for quantitative characterization and treatment of ventricular fibrillation includes preprocessing a time series of an atrial fibrillation signal obtained from a patient, segmenting the time series of the AF signal into activation segments by the computer system, obtaining local activation waveforms (LAW) from the activation segments, determining degrees of similarity between the LAWs, and identifying one or more critical regions in the patient's atria if the LAWs have degrees of similarity exceeding a first threshold value.

System and method for improved complex fractionated electrogram ablation

Growing community of inventors

Taoyuan, Taiwan

Wan-Hsin Hsieh