DSA crossword exercise

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Across
  1. 1. image without contrast
  2. 3. impervious to to X-rays or similar radiation
  3. 6. angio-TK, CTA
  4. 7. ... technique, imaging technique that uses X-rays to obtain images of the interior of a patient
  5. 8. ...resonance angiography,MRA
Down
  1. 2. taking one image from another
  2. 4. something seen on an image that are not present in reality but appear due to misregistration
  3. 5. tissue of bones