| |  Online-Ressource |
|---|
| Verfasst von: | Fränzle, Andrea [VerfasserIn]  |
|---|
| | Bretschi, Maren [VerfasserIn] |
|---|
| | Bäuerle, Tobias [VerfasserIn] |
|---|
| | Giske, Kristina [VerfasserIn] |
|---|
| | Hillengaß, Jens [VerfasserIn] |
|---|
| | Bendl, Rolf [VerfasserIn] |
|---|
| Titel: | A quantification strategy for missing bone mass in case of osteolytic bone lesions |
|---|
| Verf.angabe: | Andrea Fränzle, Maren Bretschi and Tobias Bäuerle, Kristina Giske, Jens Hillengass, Rolf Bendl |
|---|
| E-Jahr: | 2013 |
|---|
| Jahr: | 11 November 2013 |
|---|
| Umfang: | 8 S. |
|---|
| Teil: | volume:40 |
|---|
| | year:2013 |
|---|
| | number:12 |
|---|
| | elocationid:123501 |
|---|
| | pages:123501-1-123501-8 |
|---|
| | extent:8 |
|---|
| Fussnoten: | Gesehen am 26.04.2021 |
|---|
| Titel Quelle: | Enthalten in: Medical physics |
|---|
| Ort Quelle: | Hoboken, NJ : Wiley, 1974 |
|---|
| Jahr Quelle: | 2013 |
|---|
| Band/Heft Quelle: | 40(2013), 12, Artikel-ID 123501, Seite 123501-1-123501-8 |
|---|
| ISSN Quelle: | 2473-4209 |
|---|
| | 1522-8541 |
|---|
| Abstract: | Purpose: Most of the patients who died of breast cancer have developed bone metastases. To understand the pathogenesis of bone metastases and to analyze treatment response of different bone remodeling therapies, preclinical animal models are examined. In breast cancer, bone metastases are often bone destructive. To assess treatment response of bone remodeling therapies, the volumes of these lesions have to be determined during the therapy process. The manual delineation of missing structures, especially if large parts are missing, is very time-consuming and not reproducible. Reproducibility is highly important to have comparable results during the therapy process. Therefore, a computerized approach is needed. Also for the preclinical research, a reproducible measurement of the lesions is essential. Here, the authors present an automated segmentation method for the measurement of missing bone mass in a preclinical rat model with bone metastases in the hind leg bones based on 3D CT scans. Methods: The affected bone structure is compared to a healthy model. Since in this preclinical rat trial the metastasis only occurs on the right hind legs, which is assured by using vessel clips, the authors use the left body side as a healthy model. The left femur is segmented with a statistical shape model which is initialised using the automatically segmented medullary cavity. The left tibia and fibula are segmented using volume growing starting at the tibia medullary cavity and stopping at the femur boundary. Masked images of both segmentations are mirrored along the median plane and transferred manually to the position of the affected bone by rigid registration. Affected bone and healthy model are compared based on their gray values. If the gray value of a voxel indicates bone mass in the healthy model and no bone in the affected bone, this voxel is considered to be osteolytic. Results: The lesion segmentations complete the missing bone structures in a reasonable way. The mean ratiovr/vm of the reconstructed bone volume vr and the healthy model bone volume vm is 1.07, which indicates a good reconstruction of the modified bone. Conclusions: The qualitative and quantitative comparison of manual and semi-automated segmentation results have shown that comparing a modified bone structure with a healthy model can be used to identify and measure missing bone mass in a reproducible way. |
|---|
| DOI: | doi:10.1118/1.4828843 |
|---|
| URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext ; Verlag ; Resolving-System: https://doi.org/10.1118/1.4828843 |
|---|
| | Volltext ; Verlag: https://doi.org/https://doi.org/10.1118/1.4828843 |
|---|
| | Volltext: https://aapm.onlinelibrary.wiley.com/doi/abs/10.1118/1.4828843 |
|---|
| | DOI: https://doi.org/10.1118/1.4828843 |
|---|
| Datenträger: | Online-Ressource |
|---|
| Sprache: | eng |
|---|
| Sach-SW: | Acceleration measurement |
|---|
| | Analysing materials by determining density or specific gravity |
|---|
| | Biological material |
|---|
| | Biomedical modeling |
|---|
| | bone |
|---|
| | bone metastasis |
|---|
| | Cancer |
|---|
| | Computed tomography |
|---|
| | Computer modeling |
|---|
| | Computer software |
|---|
| | Computerised tomographs |
|---|
| | computerised tomography |
|---|
| | Decision trees |
|---|
| | Digital computing or data processing equipment or methods |
|---|
| | e.g. blood |
|---|
| | Haemocytometers |
|---|
| | image analysis |
|---|
| | Image data processing or generation |
|---|
| | image reconstruction |
|---|
| | image registration |
|---|
| | image segmentation |
|---|
| | in general |
|---|
| | Investigating density or specific gravity of materials |
|---|
| | mass measurement |
|---|
| | Mass measurement |
|---|
| | medical image processing |
|---|
| | Medical image segmentation |
|---|
| | Medical imaging |
|---|
| | osteolytic lesions |
|---|
| | physiological models |
|---|
| | preclinical animal model |
|---|
| | Reconstruction |
|---|
| | Registration |
|---|
| | segmentation |
|---|
| | Segmentation |
|---|
| | specially adapted for specific applications |
|---|
| | statistical analysis |
|---|
| | urine |
|---|
| K10plus-PPN: | 1755950128 |
|---|
| Verknüpfungen: | → Zeitschrift |
|---|
¬A¬ quantification strategy for missing bone mass in case of osteolytic bone lesions / Fränzle, Andrea [VerfasserIn]; 11 November 2013 (Online-Ressource)
