Abstract
The purpose of this study was to quantify skin motion over the liver when patients are repositioned during image-guided interventions. Four human subjects with different body habitus lay supine on the interventional radiology table. The subjects held their arms up over their heads and down at their sides for 13 repositioning trials. Precise 3-D locations of the four skin fiducials permitted deformable skin motion to be quantified. For the first two occasions, the average skin motion was 1.00±0.82 mm in the arms-up position and 0.94±0.56 mm in the arms-down position, a small, but not statistically significant difference. Three out of the four subjects exhibited increased skin motion in the arms-up position, suggesting that patient-positioning technique during CT imaging may have an effect on the skin-motion component of registration error in image-guided interventions. The average skin motion was 0.65±0.39 mm for Subject 1 and 1.32±0.78 mm for Subject 2, a significant difference. Subjects 3 and 4 demonstrated a similar amount of skin motion (0.86±0.55mm and 0.89±0.59mm, respectively). The subject with the largest body habitus demonstrated significantly less skin motion, an observation that is difficult to explain. The skin fiducial on the xiphoid process exhibited significantly less skin motion than the other fiducials, suggesting that certain anatomic locations could influence motion of the fiducial, and subsequently, the introduced error.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Editors | R.L. Galloway Jr. |
| Pages | 257-268 |
| Number of pages | 12 |
| Volume | 5029 |
| DOIs | |
| State | Published - 2003 |
| Externally published | Yes |
| Event | Medical Imaging 2003: Visualization, Image-Guided Procedures and Display - San Diego, CA, United States Duration: Feb 16 2003 → Feb 18 2003 |
Other
| Other | Medical Imaging 2003: Visualization, Image-Guided Procedures and Display |
|---|---|
| Country | United States |
| City | San Diego, CA |
| Period | 2/16/03 → 2/18/03 |
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Keywords
- Deformable
- Fiducials
- Image-guided interventions
- Interventional radiology
- Liver
- Patient-positioning
- Registration
- Repositioning
- Skin motion
- Xi phoid-process
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Quantification of skin motion over the liver using optical tracking. / Boyd, David; Tang, Jonathan; Banovac, Filip; Tanaka, Daigo; Dieterich, Sonja; Lindisch, David; Levy, Elliot; Cleary, Kevin.
Proceedings of SPIE - The International Society for Optical Engineering. ed. / R.L. Galloway Jr. Vol. 5029 2003. p. 257-268.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Quantification of skin motion over the liver using optical tracking
AU - Boyd, David
AU - Tang, Jonathan
AU - Banovac, Filip
AU - Tanaka, Daigo
AU - Dieterich, Sonja
AU - Lindisch, David
AU - Levy, Elliot
AU - Cleary, Kevin
PY - 2003
Y1 - 2003
N2 - The purpose of this study was to quantify skin motion over the liver when patients are repositioned during image-guided interventions. Four human subjects with different body habitus lay supine on the interventional radiology table. The subjects held their arms up over their heads and down at their sides for 13 repositioning trials. Precise 3-D locations of the four skin fiducials permitted deformable skin motion to be quantified. For the first two occasions, the average skin motion was 1.00±0.82 mm in the arms-up position and 0.94±0.56 mm in the arms-down position, a small, but not statistically significant difference. Three out of the four subjects exhibited increased skin motion in the arms-up position, suggesting that patient-positioning technique during CT imaging may have an effect on the skin-motion component of registration error in image-guided interventions. The average skin motion was 0.65±0.39 mm for Subject 1 and 1.32±0.78 mm for Subject 2, a significant difference. Subjects 3 and 4 demonstrated a similar amount of skin motion (0.86±0.55mm and 0.89±0.59mm, respectively). The subject with the largest body habitus demonstrated significantly less skin motion, an observation that is difficult to explain. The skin fiducial on the xiphoid process exhibited significantly less skin motion than the other fiducials, suggesting that certain anatomic locations could influence motion of the fiducial, and subsequently, the introduced error.
AB - The purpose of this study was to quantify skin motion over the liver when patients are repositioned during image-guided interventions. Four human subjects with different body habitus lay supine on the interventional radiology table. The subjects held their arms up over their heads and down at their sides for 13 repositioning trials. Precise 3-D locations of the four skin fiducials permitted deformable skin motion to be quantified. For the first two occasions, the average skin motion was 1.00±0.82 mm in the arms-up position and 0.94±0.56 mm in the arms-down position, a small, but not statistically significant difference. Three out of the four subjects exhibited increased skin motion in the arms-up position, suggesting that patient-positioning technique during CT imaging may have an effect on the skin-motion component of registration error in image-guided interventions. The average skin motion was 0.65±0.39 mm for Subject 1 and 1.32±0.78 mm for Subject 2, a significant difference. Subjects 3 and 4 demonstrated a similar amount of skin motion (0.86±0.55mm and 0.89±0.59mm, respectively). The subject with the largest body habitus demonstrated significantly less skin motion, an observation that is difficult to explain. The skin fiducial on the xiphoid process exhibited significantly less skin motion than the other fiducials, suggesting that certain anatomic locations could influence motion of the fiducial, and subsequently, the introduced error.
KW - Deformable
KW - Fiducials
KW - Image-guided interventions
KW - Interventional radiology
KW - Liver
KW - Patient-positioning
KW - Registration
KW - Repositioning
KW - Skin motion
KW - Xi phoid-process
UR - http://www.scopus.com/inward/record.url?scp=0043127001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0043127001&partnerID=8YFLogxK
U2 - 10.1117/12.479784
DO - 10.1117/12.479784
M3 - Conference contribution
VL - 5029
SP - 257
EP - 268
BT - Proceedings of SPIE - The International Society for Optical Engineering
A2 - Galloway Jr., R.L.
ER -