Imaging Pearls ❯ CT Techniques and Principles, including MPR and 3D ❯ Trauma
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- “ With a single continuous acquisition, whole body CT angiography is able to demonstrate all potentially injured organs, as well as vascular and bone structures, from the circle of Willis to the symphysis pubis”
Blunt Polytrauma: Evaluation with 64-Section Whole-Body CT Angiography
Dreizin D, Munera F
RadioGraphics 2012; 32:609-631 - “ In this article, we discuss potential indications for whole body CT angiography, the importance of the use of trauma scoring, the value of whole body CT angiography in detecting important, not to miss injuries at each anatomic level, the benefit of reviewing multiplanar reformation (MPR) and three dimensional (3D) images for timely and accurate interpretation; and potential pitfalls that should be avoided, as well as ongoing controversies and future trends.”
Blunt Polytrauma: Evaluation with 64-Section Whole-Body CT Angiography
Dreizin D, Munera F
RadioGraphics 2012; 32:609-631 - “ In this article, we discuss potential indications for whole body CT angiography, the benefit of reviewing multiplanar reformation (MPR) and three dimensional (3D) images for timely and accurate interpretation.”
Blunt Polytrauma: Evaluation with 64-Section Whole-Body CT Angiography
Dreizin D, Munera F
RadioGraphics 2012; 32:609-631 - “ Acquisition of subisotropic voxels confers nearly equivalent resolution in any plane and provides many opportunities for maximizing efficiency in evaluating for injuries in patients with blunt polytrauma, necessitating a move away from overreliance on axial images; thus, the use of coronal and sagittal images should no longer be considered complimentary.”
Blunt Polytrauma: Evaluation with 64-Section Whole-Body CT Angiography
Dreizin D, Munera F
RadioGraphics 2012; 32:609-631 - Multiorgan Trauma Protocol for 64 MDCT and Beyond
1. Unenhanced brain CT
2. Enhanced scan from circle of Willis to the symphysis pubis
- 120 kVp
- 0.7 pitch
- 0.5 sec rotation time
- 0.6 mm collimation
- Images reconstructed at 3.0 (for radiologist) and 1.5 mm (for MPR and 3D) - Multiorgan Trauma Protocol for 64 MDCT and Beyond
- Scan delay is fixed at 20 seconds for patients under age 55 and 25 seconds for patients over 55 years of age
- Biphasic injection 100 ml bolus, 350 mg/ml non-ionic contrast at 4.0 cc/sec for 15 seconds, then 3.0 cc/sec for 13 seconds and then 30 ml of saline injected at 4 cc/sec
- No oral contrast
- Delayed scans are optional depending on the early images or clinical history
- Scan with arms above the head in all cases