Improved accuracy of markerless motion tracking on bone suppression images : preliminary study for image-guided radiation therapy (IGRT)
The bone suppression technique based on advanced image processing can suppress the conspicuity of bones on chest radiographs, creating soft tissue images obtained by the dual-energy subtraction technique. This study was performed to evaluate the usefulness of bone suppression image processing in image-guided radiation therapy. We demonstrated the improved accuracy of markerless motion tracking on bone suppression images. Chest fluoroscopic images of nine patients with lung nodules during respiration were obtained using a flat-panel detector system (120 kV, 0.1 mAs/pulse, 5 fps). Commercial bone suppression image processing software was applied to the fluoroscopic images to create corresponding bone suppression images. Regions of interest were manually located on lung nodules and automatic target tracking was conducted based on the template matching technique. To evaluate the accuracy of target tracking, the maximum tracking error in the resulting images was compared with that of conventional fluoroscopic images. The tracking errors were decreased by half in eight of nine cases. The average maximum tracking errors in bone suppression and conventional fluoroscopic images were 1.3 ± 1.0 and 3.3 ± 3.3 mm, respectively. The bone suppression technique was especially effective in the lower lung area where pulmonary vessels, bronchi, and ribs showed complex movements. The bone suppression technique improved tracking accuracy without special equipment and implantation of fiducial markers, and with only additional small dose to the patient. Bone suppression fluoroscopy is a potential measure for respiratory displacement of the target.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2015 |
|---|---|
| Erschienen: |
2015 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:60 |
|---|---|
| Enthalten in: |
Physics in medicine and biology - 60(2015), 10 vom: 21. Mai, Seite N209-18 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Tanaka, Rie [VerfasserIn] |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Completed 18.01.2016 Date Revised 26.07.2019 published: Print Citation Status MEDLINE |
|---|
| Förderinstitution / Projekttitel: |
|
|---|
| PPN (Katalog-ID): |
NLM250679027 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM250679027 | ||
| 003 | DE-627 | ||
| 005 | 20231224160334.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231224s2015 xx |||||o 00| ||eng c | ||
| 028 | 5 | 2 | |a pubmed24n0835.xml |
| 035 | |a (DE-627)NLM250679027 | ||
| 035 | |a (NLM)26153580 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Tanaka, Rie |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Improved accuracy of markerless motion tracking on bone suppression images |b preliminary study for image-guided radiation therapy (IGRT) |
| 264 | 1 | |c 2015 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 18.01.2016 | ||
| 500 | |a Date Revised 26.07.2019 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a The bone suppression technique based on advanced image processing can suppress the conspicuity of bones on chest radiographs, creating soft tissue images obtained by the dual-energy subtraction technique. This study was performed to evaluate the usefulness of bone suppression image processing in image-guided radiation therapy. We demonstrated the improved accuracy of markerless motion tracking on bone suppression images. Chest fluoroscopic images of nine patients with lung nodules during respiration were obtained using a flat-panel detector system (120 kV, 0.1 mAs/pulse, 5 fps). Commercial bone suppression image processing software was applied to the fluoroscopic images to create corresponding bone suppression images. Regions of interest were manually located on lung nodules and automatic target tracking was conducted based on the template matching technique. To evaluate the accuracy of target tracking, the maximum tracking error in the resulting images was compared with that of conventional fluoroscopic images. The tracking errors were decreased by half in eight of nine cases. The average maximum tracking errors in bone suppression and conventional fluoroscopic images were 1.3 ± 1.0 and 3.3 ± 3.3 mm, respectively. The bone suppression technique was especially effective in the lower lung area where pulmonary vessels, bronchi, and ribs showed complex movements. The bone suppression technique improved tracking accuracy without special equipment and implantation of fiducial markers, and with only additional small dose to the patient. Bone suppression fluoroscopy is a potential measure for respiratory displacement of the target | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 700 | 1 | |a Sanada, Shigeru |e verfasserin |4 aut | |
| 700 | 1 | |a Sakuta, Keita |e verfasserin |4 aut | |
| 700 | 1 | |a Kawashima, Hiroki |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Physics in medicine and biology |d 1956 |g 60(2015), 10 vom: 21. Mai, Seite N209-18 |w (DE-627)NLM000336505 |x 1361-6560 |7 nnns |
| 773 | 1 | 8 | |g volume:60 |g year:2015 |g number:10 |g day:21 |g month:05 |g pages:N209-18 |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 60 |j 2015 |e 10 |b 21 |c 05 |h N209-18 | ||