Slice Thickness for multi-frame ultrasound

Support
1

Hi,

I am just new to 3D slicer and I wanted to ask one question. I have a set of raw ultrasound data (cineloop) and I have the pixel spacing information (0.03x0.03) and not slice thickness for volumetric reconstruction. It seems the voxels are not isotropic, so when I reconstruct the volume the sagittal view is prefect (with pixel spacing of (0.03x0.03.0x0.03)) but the axial and coronal plane looks not correct (compressed, thin).

I wanted to ask, how I can compute the slice thickness (z-axis) if I have only pixel-spacing info for x and y axes?

Thank you,
Best,

2

Was the image series acquired by sliding the transducer on the patient’s body?

Was a position tracker used to record accurate pose of the transducer for each image slice?

3

Hi Lasso,

The ultrasound images acquired using side-fire probe! these are micro-ultrasound images similar to transrectal ultrasound after inserting the probe into rectum to capture prostate gland images.

The pose information is not there, since we had only processed RF data.

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4

Which imaging system is this? A commercial device or a custom-built research tool?

Was the probe rotated or translated during acquisition? Was it moved by a motor or just freehand?

Is the image position patient and image orientation patient tags are set correctly for each frame?