Multi-Frame Modality = NM

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sgrimm
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Joined: Mon, 2008-02-04, 19:15

Multi-Frame Modality = NM

#1 Post by sgrimm »

Hi,

i am trying to load a multi-frame NM image. It contains basically two frames, bone scintigraphy: anterior and posterior. These two frames are two separate images as opposed to two consecutive images. What in the header do I have to use to understand that I have to split these two frames and where is the split?

Best regards

Per
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#2 Post by Per »

Have you tried using the getOutputData method from the DicomImage class? It can specify which frame to grab.

If you cannot use that, you can count the bytes using the rows, columns, bits allocated, and samples per pixel tags.

Marco Eichelberg
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OFFIS DICOM Team
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#3 Post by Marco Eichelberg »

This is not really a DCMTK related question. I would suggest that you read the IHE Radiology Technical Framework Supplement on Nuclear Medicine Imaging - that explains some details of how NM images have to be sorted, organized, displayed etc. As far as I understand, the Frame Increment Pointer (0028,0009) defines the "dimensions" in which the frames of a multi-frame NM object are organized. This could be a subset of Energy Window (0054,0010), Detector (0054,0020), Rotation (0054,0050), RR Interval (0054,0060), Time Slot (0054,0070),Angular View (0054,0090),
Slice (0054,0080) and probably a few more attributes serving as "dimensions".

sgrimm
Posts: 9
Joined: Mon, 2008-02-04, 19:15

#4 Post by sgrimm »

Marco,
yes I agree, this is not a 100% DCMTK related question. But thank you very much for pointing me in the right direction.

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