Article Figures & Data
Figures
- FIGURE 1.
CT image of lumbar ROI illustrating relative position and depth of aorta and IVC compared with spine.
- FIGURE 2.
Comparison of depth of aorta, IVC, and vertebra from posterior surface at L4. Each line represents data from an individual patient.
Tables
Parameter L2 aortic area (cm2) L4 aortic area (cm2) L2 IVC area (cm2) L4 IVC area (cm2) Mean 2.3 1.7 3.4 2.5 Range 1.2–3.3 0.8–2.8 1.7–6.4 1.3–3.8 - TABLE 2
Aortic and IVC Volumes from L2–L4: Comparison with Trabecular Lumbar Marrow Volume
Parameter L2–L4 length (cm) Aortic volume (cm3) IVC volume (cm3) Aortic + IVC volume (cm3) Marrow volume (cm3)* Mean 9.9 19.3 31.2 50.5 67 Range 7–11.2 10.1–33.1 14.9–68.5 25.0–94.0 46–102 ↵* Trabecular marrow volume previously reported (18).
- TABLE 3
Comparison of Depth (cm) of Mid Aorta, IVC, and Vertebral Body from Posterior Surface at L2 and L4
Aorta at… IVC at… Vertebra at… Parameter L2 L4 L2 L4 L2 L4 Mean 11.7 12.8 11.7 12.3 9.0 9.8 Range 90.2–20.2 7–18.7 8.5–18.6 7.5–18.9 6.4–12.6 6.8–16.3 - TABLE 4
Impact of Effective T1/2 and Cumulated Blood Activity Concentration on L2–L4 Imaging-Based Marrow Dose
Whole-body T1/2 (h) Blood T1/2, 1 compartment (h) Blood cumulated activity (GBq-s/mL) Change in marrow dose (%) Group Radionuclide Mean Range Mean Range Mean Range Mean Range 1 (n = 5) 111In-B9E9 pretarget 33 26–40 16 10–22 0.27 0.13–0.40 3 1–7 2 (n = 8) 111In-ibritumomab tiuxetan 55 49–61 31 30–35 4.3 2.0–6.9 17 9–24 3 (n = 4) 131I-HuCC49ΔCh2 38 32–42 20 19–25 8.9 6.7–10.8 24 15–28 4 (n = 9) 111In-CC49 61 56–64 54 38–70 3.3 1.5–5.1 15 6–26
