1. Editorial

   • H. L. Abrams
   • E. Zeitler

   EditorialNotes Pages: 1 - 1

2. Publisher's Letter

   • Heinz Götze

   EditorialNotes Pages: 2 - 2

3. Angiodysplasia of the colon: A cause of rectal bleeding

   • C. A. Athanasoulis
   • J. J. Galdabini
   • M. L. Ezpeleta

   Originals Pages: 3 - 13

4. Metabolic action and cellular structure of the myocardium during coronary angiography

   • E. Löhr
   • J. Timmermann
   • G. Popitz

   Originals Pages: 15 - 20

5. Experience with mechanical contrast medium injection at selective coronary angiography

   • G. Franken
   • E. Zeitler

   Originals Pages: 21 - 26

6. Radionuclide angiography of the heart in coronary heart disease: Where do we stand?

   • N. Schad
   • O. Nickel

   Originals Pages: 27 - 35

7. Congenital tricuspid insufficiency

   • C. Pernot
   • J. C. Hoeffel
   • A. Piwnica

   Case Reports Pages: 37 - 44

8. Radiologic diagnosis of different types of pulmonary stenoses

   • W. R. Castaneda-Zuniga
   • A. Formanek
   • K. Amplatz

   Reviews Pages: 45 - 57

9. Renal tumor versus renal cyst

   • H. L. Abrams

   Reviews Pages: 59 - 75

10. Announcements

    Announcement Pages: 76 - 76