Thoracic
AP IR Size: 14x17 LW SID: 40'' Page #'s: 1:403,158	Positioning:   • Supine or Upright (Shoulders same plane)   • If supine, bend knees (reduces kyphosis)   • TOF 1.5-2'' superior to shoulders	CR Entrance & Angle:   • _|_ to C7 (midway jugular notch & xiphoid)   • Collimation:   • 7x17 Respiration:   • Suspend on full exhalation or shallow breathing	Eval Criteria:   • T1-T12, close collimation   • NR Spinous processes at the midline of the vertebral bodies   • Vertebral column in the middle of the radiograph   • Ribs, shoulders, lungs, and diaphragm if a 14 X 17 IR is used
Lateral IR Size: 14x17 LW SID: 40'' Page #'s: 1:406,160	Positioning:   • Pt TLP recumbent or erect (left recommended)   • midway between MCP & posterior thorax   • arms at right angles to body anteriorly   • TOF 1.5-2'' superior to shoulders	CR Entrance & Angle:   • _|_ to C7 (inferior angle of scapula) If spine not ||   • CR-female 10° cephalad, male 15° cephalad Collimation:   • close Respiration:   • Suspend on full exhalation or normal breathing	Anatomy to IR:   • Eval Criteria:   • T1-T12 through ribs & lung shadow and centered on IR   • Open Intervertebral foramina & disk spaces; NR-Ribs SI posteriorly   • Tl to T3 are not well visualized