# Curve Data Problem - DICOM

This is a discussion on Curve Data Problem - DICOM ; Hi, I have a problem with ECG curve DATA. I don't know if my understanding or the data is wrong. Some appilcations show this curve fine so i guess it's me... I saw few images of different vendors with the ...

1. ## Curve Data Problem

Hi,

I have a problem with ECG curve DATA.
I don't know if my understanding or the data is wrong.
Some appilcations show this curve fine so i guess it's me...

I saw few images of different vendors with the same problem

The Curve Data has the following attributes:

5000,0005 Curve Dimensions = 2
5000,0010 Number Of Points = 1360
5000,0020 Type Of Data = ECG
5000,0030 Axis Units = DPPS\NONE
5000,0102 Data Value Representation = 0
The Curve Data size is 2720

To my knowledge the data size should be:
dimensions * number of points * data size
for value representation 0 the data size is 2
so the size should be 2*1360*2 = 5440 but the actual size is
2720 - exactly half of the expected....

Any idea ?

Thanks,
Roi

2. ## Re: Curve Data Problem

What about the elements (see PS 3.3 C.10.2.1.5):

50xx,0110 - Curve Data Descriptor
50xx,0114 - Coordinate Step Value

It could mean that you have 2 dimensions but only one
value per point because the other value is determined
by "interval spacing" (as they call it in the standard).

Cheers,
Torsten

roi@algotec.co.il wrote:
> Hi,
>
> I have a problem with ECG curve DATA.
> I don't know if my understanding or the data is wrong.
> Some appilcations show this curve fine so i guess it's me...
>
> I saw few images of different vendors with the same problem
>
> The Curve Data has the following attributes:
>
> 5000,0005 Curve Dimensions = 2
> 5000,0010 Number Of Points = 1360
> 5000,0020 Type Of Data = ECG
> 5000,0030 Axis Units = DPPS\NONE
> 5000,0102 Data Value Representation = 0
> The Curve Data size is 2720
>
> To my knowledge the data size should be:
> dimensions * number of points * data size
> for value representation 0 the data size is 2
> so the size should be 2*1360*2 = 5440 but the actual size is
> 2720 - exactly half of the expected....
>
> Any idea ?
>
>
> Thanks,
> Roi

3. ## Re: Curve Data Problem

Hi Torsten,

Thanks, that was really my problem.

Roi