Company: QTIWW
Filing Date: 2025-11-03
Form Type: S-1
Source: 0001628280-25-048373
Chunk: 174

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-11-03
Form: S-1
Chunk 174
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 and Beyond: Market Trends, Insight, Growth Opportunities, Market Share and Forecasts by Types, Applications, Countries and Companies to 2023 (Feb. 2023), available at https://www.marketresearch.com/VPA-Research-v4245/Automated-Breast-Ultrasound-System-Size-33347813/.

8 A medical reflection transducer, also known as an ultrasound transducer, is a device that converts electrical energy into sound waves, and the back again into electrical energy. It is used in medical imaging to produce images of internal organs and tissues in the body, and it is used in various medical imaging techniques such as ultrasound, echocardiography and Doppler imaging. See, e.g., ECG & ECHO Learning, The Ultrasound Transducer, available at https://ecgwaves.com/topic/the-ultrasound-transmitter-probe/ (last visited Apr. 4, 2023); see also, FDA, Ultrasound Imaging Sept. 28, 2022), https://www.fda.gov/radiation-emitting-products/medical-imaging/ultrasound-imaging.

9 B-mode ultrasound, also known as 2D ultrasound, is a type of ultrasound imaging where “a linear array of transducers simultaneously scans a plane through the body that can be viewed as a two-dimensional image on screen.” See, NIH, National Library of Medicine, Carovac A., Smajlovic F., Junuzovic D., Application of Ultrasound in Medicine, 19(3) Acta Inform Med. 168-171 (Sept. 2011), available at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3564184/.

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Breast Ultrasound Tomography Systems

These technologies use traditional reflection transducers 10 in an “array” configuration around the breast: 1) Mastoscopia (Greece); 2) the KIT system (research only) from Karlsruhe University in Germany; and 3) the Delphinus System.

Photoacoustic Imaging

Photoacoustic imaging systems utilize lasers to excite tissues and produce acoustic energy that subsequently create images of the breast vasculature. 11 Such systems include both photoacoustic tomography (“ PAT ”) and photoacoustic imaging (“ PAI ”) systems. While the PAT systems allow volumetric imaging by reconstructing stacks of 2D images, the PAI systems only allow superimposition of photoacoustic signal information on