CT Series

Scout views of axial CT series

Lines #1–32 indicate positions of axial sections in the following CT series.
All sections are 5 mm thick and are spaced by 5–20 mm.
Each section is displayed with bone settings (above), soft tissue settings (middle), and lung settings (below). Arms are raised above head. Intravenous contrast was given in the right cubital vein.
Vertebrae are numbered with romans and costae with arabics on the bone image.
Lung segments are numbered with arabics on the lung image.

Right lung segments
1. Superior lobe:
  1. # 1: Apical segment
  2. # 2: Posterior segment
  3. # 3: Anterior segment
2. Middle lobe:
  1. # 4: Lateral segment
  2. # 5: Medial segment
3. Inferior lobe:
  1. # 6: Superior segment
  2. # 7: Medial basal segment
  3. # 8: Anterior basal segment
  4. # 9: Lateral basal segment
  5. #10: Posterior basal segment
Left lung segments
1. Superior lobe:
  1. # 1: Apical segment
  2. # 2: Posterior segment
  3. # 3: Anterior segment
  4. # 4: Superior lingular segment
  5. # 5: Inferior lingular segment
2. Inferior Lobe:
  1. # 6: Superior segment
  2. # 7: Medial basal segment
  3. # 8: Anterior basal segment
  4. # 9: Lateral basal segment
  5. #10: Posterior basal segment

#1 and #2 of left lung usually arise from a common apicoposterior segmental bronchus.
Note that the diameter of bronchi appear very narrow in the lung image due to the partial volume effect in CT imaging.
Arrows ←, → and ↔ in the legends indicate that a structure can be seen on a previous or following section, or both.