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Session: Imaging General ePoster Viewing [Return to Session]

Photon Counting Detector: The First Human Images

I Bechwati1*, D Lee2, D Kim3, J Park4, (1) NeuroLogica Corporation, Danvers, MA, (2) Neurologica Corporation, Danvers, MA, (3) Samsung Electronics, Suwon, S. Korea,(4) Samsung Electronics, Suwon, S. Korea


PO-GePV-I-55 (Sunday, 7/10/2022)   [Eastern Time (GMT-4)]

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Purpose: The main purpose is to demonstrate the imaging capabilities of the new Photon Counting Detector (PCD) fitted on the OmniTom scanner built by Neurologica Corporation.

Methods: The OmniTom scanner fitted with PCD array becomes the second scanner to get FDA 510K approval. The scanner gets approved for full diagnostic imaging. The OmniTom is a battery operated 16 slice head mobile scanner. It supports axial and helical scanning modes. The PCD array is made of individual cells of 0.19x0.23 mm2. The Cadmium Telluride (CdTe) cells are binned to match the EID scanner detector size. The array provides three overlapping energy bands generating three images. A full spectrum image, a medium energy image and a high energy image. The first PCD image generated by the full spectrum is equivalent to the current CT images of the EID array. Two OmniTom scanners equipped with a PCD and an EID detector array were used to compare the image quality. Three different volunteers were scanned using a low dose scan of 40 mGy. Two volunteers were scanned on both scanners. Images from three 10mm sections were compared. The scanned sections are taken at the sinus level, the orbital region, and the top of the skull. The third volunteer underwent a complete head scan using only the OmniTom PCD. The scan covers the entire brain starting from above the upper jaw.

Results: The scans clearly show that PCD detectors can generate diagnostically acceptable images. The images were reviewed by two independent radiologists who both agreed that the images from the PCD OmniTom are diagnostically equivalent to the EID scanner. see attached Figures.

Conclusion: The comparative studies show the similarity between the PCD and the EID detectors. The full head scan demonstrates the ability of the PCD in doing complete clinical scan as needed.


Photon Detectors, CT, X Rays


Not Applicable / None Entered.

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