• Case 1

    Q.Freeze helps to highlight small lesion in the lung

    Reconstruction: VUE Point HD with SharpIR*
    Post injection time: 55 min
    Acquisition time:

    • Standard: 1.5 min/bed
    • Q.Freeze: 30 sec/bed

    Dose: 325 MBq of 18F-FDG

    Standard PET Acquisition:
    An additional small lung lesion was detected in the localization CT without visible uptake in the PET data.

    Q.Freeze Acquisition:
    Using motion correction technique, the small lung lesion was clearly showing metabolic activity and was classified as a positive findings.

    Using Q.Freeze technology significantly improved the signal to noise ratio by removing the motion impact, thus allowing visual detection of a small lung uptake.

  • Case 2

    Q.Freeze helps increase staging accuracy

    PET acquisition
    Reconstruction: VUE Point HD with SharpIR*
    Post injection time: 63 min
    Acquisition time:

    • Standard: 1.5 min/bed
    • Q.Freeze: 30 sec/bin

    Dose: 260 MBq of 18F-FDG

    CT acquisition
    Whole-body acquisition for localization and attenuation purpose.
    4D acquisition both for CTAC and diagnosis.

    Patient History
    Patient treated surgically for a left colon adenocarcinoma followed by several chemotherapy cycles.
    After 2 years, an increase of the serum marker ( GICA 76 U/ml) is noticed. Patient submitted to contrast enhanced CT with a suspicious relapse in the colon hepatic flexure. The colonoscopy showed tubular polypoid lesion with moderate dysplasia. No other pathological findings were found.
    Patient submitted the for PET/CT for staging of the disease.

    Standard Acquisition:
    Small focus uptake area localized on the gastric wall difficult to classify . Several mismatch artifacts due to the patient breathing on the abdominal area.

    Q.Freeze acquisition:
    The focal uptake area is clearly localized in the pancreatic tail as well as new pathological uptake area corresponding to a peritoneal nodule.

    After the motion correction performed by the Q.Freeze technology the localization of the lesion and extent of the disease is confirmed. Correctly localizing the metastasis benefited the patient with a more accurate staging.