Company: QTIWW
Filing Date: 2025-11-03
Form Type: S-1
Source: 0001628280-25-048373
Chunk: 193

Company: QT IMAGING HOLDINGS, INC.
Filing Date: 2025-11-03
Form: S-1
Chunk 193
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 generating a true 3D rendering of the extremity. The QT

21 See , American College of Rheumatology, Joint Replacement Surgery, available at https://www.rheumatology.org/I-Am-A/Patient-Caregiver/Treatments/Joint-Replacement-Surgery#:~:text=Approximately%20790%2C000%20total%20knee%20replacements,in%20any%20area %20of%20medicine (last visited Feb. 10, 2023).

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Orthopedic Scanner will provide sub-millimeter image resolution called a QTscan which will enable identification of normal and abnormal structures and the accurate depiction of the precise shape and location of findings.

<div align='center'>The proposed QT Orthopedic Scanner being applied to hip imaging

Image 11

The proposed QT Orthopedic Scanner being applied to shoulder imaging

Image 12

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Image reconstruction of the ultrasound data is done with proprietary partial-angle segmentation software that uses the quantitative speed of sound data to highlight specific tissues for 3D visualization called a QTscan as shown in Image 13.

<div align='center'>Volume reconstructions of the knee from QTScan data

Image 13</div>

Clinical Images

In response to a request by the FDA to include Visual Grading Analysis studies in our applications, the Company has conducted an analysis comparing the image quality of the QTScan to MRI in which readers independently scored the image quality of 10 anatomical knee structures with MRI and the QTscan. In this Visual Grading Analysis, readers scored the transmission ultrasound images as equivalent or better than the MRI imaging in more than 90% of knees structure images reviewed. Image 14 below shows the QTScan of the knee (left) next to

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the MRI imaging of the knee (right). Note the higher contrast in the QTscan compared to the MRI. This exercise was conducted as part of our FDA application process and has not been published.

<div align='center'>QTScan (left) and MRI imaging (right) of a human knee

Image 14</div>

The following, Image 15 shows QTScan of the same knee from different views. Note the high contrast and detail in the QTScan image.

<div align='center'>Image 15

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Image 16 below shows QTScan of a human knee (left) compared with MRI views of the same knee (right