yes. native means no contrast, for example native chest X-ray
and what is visualized is an image

Subocclusive lesion of the distal segment of the main trunk of the ostial LAD

Main trunk crossover stenting in a patient with left internal thoracic ...
link.springer.com/article/10.1007/s12928-014-0293-1 - Oldal lefordítása
Abstract. A 74-year-old man with single coronary artery and history of previous ... stent from the main trunk ostium to the proximal LAD without complications.

Image Processing in Radiology: Current Applications
https://books.google.hu/books?isbn=3540498303 - Oldal lefordítása
Emanuele Neri, ‎Davide Caramella, ‎Carlo Bartolozzi - 2007 - ‎Medical
2006). 10.1.2 3D Image Processing: Value of Multiplanar Reconstructions The near ... In this case, the combined use of axial native images, coronal and sagittal ..

Computer Assisted Radiology / Computergestützte Radiologie: ...
https://books.google.hu/books?isbn=3642493513 - Oldal lefordítása
Heinz U. Lemke, ‎Kiyonari Inamura, ‎C.Carl Jaffe - 2013 - ‎Technology & Engineering
It is also useful if during this process the native image format can be processed to conform to the local common image format. This is especially important to ...

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Radiology Business Practice: How to Succeed
https://books.google.hu/books?isbn=0323044522 -
David M. Yousem, ‎Norman J. Beauchamp - 2007 - ‎Medical
Furthermore, for plain films, the native image resolution is 2500 Â 2000, which is significantly higher than most home or physicianoffice monitors.If the plain ...

Diagnostic and Interventional Radiology
https://books.google.hu/books?isbn=3662440377 -
Thomas J. Vogl, ‎Wolfgang Reith, ‎Ernst J. Rummeny - 2016 - ‎Medical
The often sudden onset of back pain leads to lumbar posture and movement disorders, which are also detectable on the native images. Here, lumbar lordosis is ...

CT scan - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/CT_scan
A CT scan, also called X-ray computed tomography (X-ray CT) and computerized axial ... X-ray CT is a form of radiography, although the word "radiography" used alone ..... CT images are called precontrast or native-phase images before any ...

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Note added at 6 hrs (2016-09-02 06:31:37 GMT)
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With the advent of subsecond rotation combined with multi-slice CT (up to 320-slices), high resolution and high speed can be obtained at the same time, allowing excellent imaging of the coronary arteries (cardiac CT angiography).

Volume 142 Issue 4_MeetingAbstracts | CHEST Journal | CHEST ...
journal.publications.chestnet.org/issue.aspx?issueid=25283
2012. okt. 22. - 1) in the distal portion of the right bronchus intermedius. ...... and a large sub-occlusive thrombus in brachiocephalic, bilateral ... bypass to LAD as patient had a 70% proximal LAD lesion on preoperative cardiac ...... CT angiogram demonstrated intraluminal filling defects in the main pulmonary artery trunk.

I guess it is a CT angiogram native image before giving a contrast material to the patient

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Note added at 4 days (2016-09-06 20:53:06 GMT) Post-grading
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Hvala! Nema na čemu!