No subject

ImageOrientationPatient =100, 010
ImagePositionPatient (from InstanceNumber=1) = -191.9000, -197.6000, 7.5000
ImagePositionPatient (from InstanceNumber=2) = -191.9000, -197.6000, 6.9000


After reading into a 3 D Image volume,
I got

 Origin: [-191.9, -197.6, -332.1]
 Direction: [1 0 0]
                [0 1 0]
                [0 0 1]

I thought ITK will convert RAS instead of LPH in DICOM. Can somebody verify
that ? Looks like the coordinate is still in LPH but only reversing in the Z
direction? (original is 0 0 -1)


-- 
Gen-Nan Chen, Ph. D.
email: gnchen at gmail.com

--000e0cd2beb464e4030465cf323e
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Hi! All,<br><br>I use ITK&#39;s example to read a CT DICOM series into an o=
riented Image volume. It works but I got confused about the coordinate syst=
em it used. <br><br>From DICOM&#39;s tags. I got <br>ImageOrientationPatien=
t =3D100, 010<br>
ImagePositionPatient (from InstanceNumber=3D1) =3D -191.9000, -197.6000, 7.=
5000<br>ImagePositionPatient (from InstanceNumber=3D2) =3D -191.9000, -197.=
6000, 6.9000<br><br><br>After reading into a 3 D Image volume, <br>I got<br=
><br>
=A0Origin: [-191.9, -197.6, -332.1]<br>=A0Direction: [1 0 0]<br>=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 [0 1 0]<br>=A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 [0 0 1]<br>
<br>I thought ITK will convert RAS instead of LPH in DICOM. Can somebody ve=
rify that ? Looks like the coordinate is still in LPH but only reversing in=
 the Z direction? (original is 0 0 -1)<br><br clear=3D"all"><br>-- <br>Gen-=
Nan Chen, Ph. D.<br>
email: <a href=3D"mailto:gnchen at gmail.com">gnchen at gmail.com</a><br>

--000e0cd2beb464e4030465cf323e--