[Dcmlib] GetPatSliceOrient(gdcm::File &h) (BIS)

[Mathieu Malaterre]

Mathieu Malaterre wrote:
> Jean-Pierre Roux wrote:
> 
>> Jean-Pierre Roux wrote:
>>
>>> Mathieu Malaterre wrote:
>>>
>>>
>>> I had a look a Xmedcon's code a few years ago.
>>> I gave it up, since they use :
>>> Patient Orientation (0020,0020),  (Optional Tag for MR, CT,, etc)
>>
>>
>>
>>
>> --> Sorry : actually they use PatientPosition (0x0010,0x5100)
>> assumed to be equal to "HF" or "FF".
>>
>> In *all* the images I have, it "HFS " or "FFS "  (S for supine -the 
>> guy is lying on his back- , You can also have P, for Prone).
>>
>>
>> Moreover, on MR, you can have *any* value -1< <+1 for the cosines  :
>>
>> ImageOrientationPatient (0x0020,0x0037)= [ 
>> -0.002378\0.999985\0.004852\0.030516\0.004923\-0.999522]
>>
>> an other image shows me :
>>
>> ImageOrientationPatient (0x0020,0x0037)= 
>> [0.569486\0.822001\0.000000\-0.000000\0.000000\-1.000000 ]
>>
>> JP
>>
>>
>>> and the suppose the only values for cosines inside "Image Orientation 
>>> (Patient)" (0020,0037) are -1, 0, +1 !
>>>
>>> Have a look  at :
>>> http://www.dclunie.com/medical-image-faq/html/part2.html#DICOMOrientation 
>>>
>>>
>>> It *computes* the "Patient Orientation" from "Image Orientation 
>>> (Patient)" ...
>>>
>>> gdcm uses David Clunie's code in the method :
>>> std::string Orientation::GetOrientation ( File *f )
> 
> 
> I have to say I am clueless. How exactly does this thing works. For 
> instance, SIEMENS_Sonata-16-MONO2-Value_Multiplicity.dcm
> 
> I get:
> V 0018|5100 [CS]                       [Patient Position] [HFS ]
> 
> 
> but gdcm returns:
> Orientation [LHP\PF]
> 
> What does LHP stand for ? How about PF ?

Ok forget that mail, I have a strong headache and I don't understand 
what I am saying anymore (Position != Orientation). I'll play with 
Orientation a little more after resting.

sorry for the noise
Mathieu