Eine Neue Methode Zur Differenzierung in der Rontgenographie (Planigraphies)

Plantes, B. G. Ziedses des

doi:10.3109/00016923209135135

Cited by 165 publications

(7 citation statements)

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“…DT is a decades-old imaging technique. 1,2 Nowadays it has gained renewed interest as an attractive alternative to computed tomography (CT) in certain imaging applications due to high in-plane resolution, low-dose, and low costs of an examination. The most widely used DT application field is breast imaging.…”

Section: Introductionmentioning

confidence: 99%

Weighted simultaneous algebraic reconstruction technique for tomosynthesis imaging of objects with high‐attenuation features

Levakhina¹,

Müller²,

Duschka³

et al. 2013

Medical Physics

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Results indicate the feasibility of the proposed algorithm to reduce typical tomosynthesis artifacts produced by high-attenuation features. The proposed algorithm assigns weighting coefficients automatically and no segmentation or tissue-classification steps are required. The algorithm can be included into various iterative reconstruction algorithms with an additive updating strategy. It can also be extended to computed tomography case with the complete set of angular data.

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Section: Introductionmentioning

confidence: 99%

Weighted simultaneous algebraic reconstruction technique for tomosynthesis imaging of objects with high‐attenuation features

Levakhina¹,

Müller²,

Duschka³

et al. 2013

Medical Physics

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“…Radiography may be refined with tomography which was early introduced in conventional radiology [11]. The technique has been further refined in digital radiography as tomosynthesis [12], referring to the ability to retroactively create an infinite number of arbitrary tomograms.…”

Section: Introductionmentioning

confidence: 99%

The Utility of Digital Linear Tomosynthesis Imaging of Total Hip Joint Arthroplasty with Suspicion of Loosening: A Prospective Study in 40 Patients

Göthlin

Geijer

2013

BioMed Research International

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Aim. The clinical utility of digital linear tomosynthesis in musculoskeletal applications has been validated in only a few reports. Technical performance and utility in hip prosthesis imaging have been discussed in technical reports, but no clinical evaluation has been reported. The purpose of the current study was to assess the added clinical utility of digital linear tomosynthesis compared to radiography in loosening of total hip joint arthroplasty. Materials and Methods. In a prospective study, radiography and digital tomosynthesis were performed in 40 consecutive patients with total hip arthroplasty referred for suspect prosthesis loosening. Tomosynthesis images were compared to anterior-posterior (AP) and cross-table lateral radiographs regarding demarcation and extent of demineralization and osteolysis. Further noted were skeletal fractures, cement fractures, fragmentation, and artifacts interfering with the diagnosis. Results. Tomosynthesis was superior to radiography with sharper delineation of demineralization and osteolysis in the AP projection. A limitation was the inability to generate lateral tomosynthesis images, with inferior assessment of the area anterior and posterior to the acetabular cup compared to cross-table radiographs. Artifacts interfering with diagnosis were found in one hip. Conclusion. Tomosynthesis improved evaluation of total hip arthroplasty in the AP projection but was limited by the lack of lateral projections.

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“…5 The circular tomosynthetic projection and reconstruction of multiple planes into a 3-D data cube was presented by Grant 6 in 1972. 5 The circular tomosynthetic projection and reconstruction of multiple planes into a 3-D data cube was presented by Grant 6 in 1972.…”

Section: Introductionmentioning

confidence: 99%

Classification of visible point sources using hyperspectral chromotomosynthetic imagery

Bostick¹,

Perram²

2012

J. Appl. Remote Sens

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A hyperspectral chromotomosynthetic imaging (CTI) system is used to detect and classify a collection of 21 scattered, spectrally diverse point-like sources. The instrument operates in the visible to near IR (400 to 800 nm) and has the potential to collect spectral imagery at great than 10 Hz. A two-dimensional wideband spatial image of the target scene is used to detect and spatially characterize the targets leading to optimization of the three-dimensional (3-D) spatial/spectral reconstruction of the hyperspectral image cube. The instrument is assessed by directly comparing results to spatial data collected by a wideband image and hyperspectral data collected using a liquid crystal tunable filter (LCTF). Target classification using k-means clustering of observed spectra yielded 5 to 6 target classes for each methodology, indicating information obtained using CTI was similar to that collected by the LCTF. The wide-band spatial content of the scene reconstructed from the CTI data is of same or better quality in terms of background noise and target intensities as a single frame collected by the undispersed imaging system with projections taken at every 1 deg. Performance is dependent on the number of projections used, with projections at 5 deg producing adequate results in terms of target characterization. The CTI has 2 to 4 times the spectral resolution of the LCTF. The data collected by the CTI system can simultaneously provide spatial information of equal quality as a the bandpass imaging system, provide high-frame rate slitless one-dimensional spectra, and generate 3-D hyperspectral imagery which can be exploited to provide the same results as a traditional multiband spectral imaging system.

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Eine Neue Methode Zur Differenzierung in der Rontgenographie (Planigraphies)

Cited by 165 publications

References 0 publications

Weighted simultaneous algebraic reconstruction technique for tomosynthesis imaging of objects with high‐attenuation features

Weighted simultaneous algebraic reconstruction technique for tomosynthesis imaging of objects with high‐attenuation features

The Utility of Digital Linear Tomosynthesis Imaging of Total Hip Joint Arthroplasty with Suspicion of Loosening: A Prospective Study in 40 Patients

Classification of visible point sources using hyperspectral chromotomosynthetic imagery

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