Value of Real-time Compound US in Diagnosis of Malignant Tumor in Breast Comparing with Conventional US, and Pulse Inversion Harmonic Images

2002 ◽  
Vol 47 (4) ◽  
pp. 423
Author(s):  
Soo Hyun Kim ◽  
Soo Young Chung ◽  
Sung Hwan Hong ◽  
Sang June Shin ◽  
Kyung Won Lee ◽  
...  
Keyword(s):  
Real Time ◽  
Malignant Tumor ◽  
Pulse Inversion

Real-time monitoring of HIFU treatment using pulse inversion

2013 ◽  
Vol 58 (15) ◽  
pp. 5333-5350 ◽  
Author(s):  
Jae Hee Song ◽  
Yangmo Yoo ◽  
Tai-Kyong Song ◽  
Jin Ho Chang
Keyword(s):  
Real Time ◽  
Real Time Monitoring ◽  
Hifu Treatment ◽  
Pulse Inversion

scholarly journals Sonographic Evaluation of Breast Nodules: Comparison of Conventional, Real-Time Compound, and Pulse-Inversion Harmonic Images

2002 ◽  
Vol 3 (1) ◽  
pp. 38 ◽  
Author(s):  
Bo-Kyoung Seo ◽  
Yu Whan Oh ◽  
Hyung Rae Kim ◽  
Hong Weon Kim ◽  
Chang Ho Kang ◽  
...  
Keyword(s):  
Real Time ◽  
Sonographic Evaluation ◽  
Pulse Inversion

scholarly journals Real-Time HIFU Treatment Monitoring Using Pulse Inversion Ultrasonic Imaging

2018 ◽  
Vol 8 (11) ◽  
pp. 2219 ◽  
Author(s):  
Eui-Ji Shin ◽  
Byungwoo Kang ◽  
Jin Chang
Keyword(s):  
Real Time ◽  
High Intensity ◽  
Bovine Liver ◽  
Treatment Monitoring ◽  
High Intensity Focused Ultrasound ◽  
Experimental Results ◽  
Ultrasound Images ◽  
Hifu Treatment ◽  
Monitoring Method ◽  
Pulse Inversion

Real-time monitoring of high-intensity focused ultrasound (HIFU) surgery is essential for safe and accurate treatment. However, ultrasound imaging is difficult to use for treatment monitoring during HIFU surgery because of the high intensity of the HIFU echoes that are received by an imaging transducer. Here, we propose a real-time HIFU treatment monitoring method based on pulse inversion of imaging ultrasound; an imaging transducer fires ultrasound twice in 0° and 180° phases for one scanline while HIFUs of the same phase are transmitted in synchronization with the ultrasound transmission for imaging. By doing so, HIFU interferences can be eliminated after subtracting the two sets of the signals received by the imaging transducer. This function was implemented in a commercial research ultrasound scanner, and its performance was evaluated using the excised bovine liver. The experimental results demonstrated that the proposed method allowed ultrasound images to clearly show the echogenicity change induced by HIFU in the excised bovine liver. Additionally, it was confirmed that the moving velocity of the organs in the abdomen due to respiration does not affect the performance of the proposed method. Based on the experimental results, we believe that the proposed method can be used for real-time HIFU surgery monitoring that is a pivotal function for maximized treatment efficacy.

scholarly journals Real-time perfusion imaging with low mechanical index pulse inversion Doppler imaging

2001 ◽  
Vol 37 (3) ◽  
pp. 748-753 ◽  
Author(s):  
Thomas R Porter ◽  
Feng Xie ◽  
Mary Silver ◽  
David Kricsfeld ◽  
Edward O’Leary
Keyword(s):  
Real Time ◽  
Perfusion Imaging ◽  
Doppler Imaging ◽  
Mechanical Index ◽  
Pulse Inversion

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

Video real-time imaging of artificial membranes during freeze-drying by cryo-electron microscopy

1988 ◽  
Vol 46 ◽  
pp. 16-17
Author(s):  
Alan S. Rudolph ◽  
Ronald R. Price
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Freeze Drying ◽  
Video Capture ◽  
Drying Process ◽  
Artificial Membranes ◽  
The Past ◽  
Cryo Electron Microscopy ◽  
Spherical Structures ◽  
Capture Techniques

We have employed cryoelectron microscopy to visualize events that occur during the freeze-drying of artificial membranes by employing real time video capture techniques. Artificial membranes or liposomes which are spherical structures within internal aqueous space are stabilized by water which provides the driving force for spontaneous self-assembly of these structures. Previous assays of damage to these structures which are induced by freeze drying reveal that the two principal deleterious events that occur are 1) fusion of liposomes and 2) leakage of contents trapped within the liposome [1]. In the past the only way to access these events was to examine the liposomes following the dehydration event. This technique allows the event to be monitored in real time as the liposomes destabilize and as water is sublimed at cryo temperatures in the vacuum of the microscope. The method by which liposomes are compromised by freeze-drying are largely unknown. This technique has shown that cryo-protectants such as glycerol and carbohydrates are able to maintain liposomal structure throughout the drying process.

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