Evaluation of Gantry Tilt Correction in Multi Detector-row CT : Effect on Multi-Planar Reconstruction Images

Nasada, Toshiya; Hirayama, Shinichi; Tanooka, Masao; Fujita, Tomoko; Sakai, Toshiyuki

doi:10.6009/jjrt.kj00000921603

Cited by 5 publications

(2 citation statements)

References 5 publications

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“…We also explored inclined oriented probe relative to the plane of the main axis of linear motion is perpendicular to this, which had resulted in distorted processed images in other planes This distortion is well recognized when the gantry is tilted in the case of CT imaging modality (26) and should be considered when arranging the linear stage connection to the probe. The resultant images could be corrected using a specific formula, as in the case of CT image when the gantry is tilted.…”

Section: Resultsmentioning

confidence: 99%

Exploiting the Tomographic Nature of the Ultrasound, Could Processed Ultrasound Images Be a Viable Alternative to Ct or MRI?

Saadoon¹,

Adam²,

Al-Maki³

et al. 2021

IJMSHR

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Introduction: Imaging is a very important procedure in many medical and engineering disciplines. It provides a non-destructive method of examination and exploring the interior anatomy and internal structure architecture of a certain domain. In medicine, different imaging modalities are available and many of them share the same concept, although having different processes to achieve it. Aim of the study: to validate reconstruction of ultrasound images (derived from video format) could yield same results as in case of CT scan (directly constructed from DICOM data). Materials and methods: A wooden model were used to obtain images using ultrasound and computerized tomography (CT), these images were processed to produce a 3 dimensional model. Results: initial results show that the capability of synthesis data from ultrasound imaging modality in a fashion similar to that performed routinely with CT scan data Conclusion: ultrasound imaging is a very popular modality that could be used to compensate the shortcomings of other modalities

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Section: Resultsmentioning

confidence: 99%

Exploiting the Tomographic Nature of the Ultrasound, Could Processed Ultrasound Images Be a Viable Alternative to Ct or MRI?

Saadoon¹,

Adam²,

Al-Maki³

et al. 2021

IJMSHR

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show abstract

“…Streak artifacts from dental fillings are prominent at the level of the oropharynx, and these artifacts significantly degrade image quality. Gantry tilt scanning [12] has been used for avoiding artifacts caused by dental fillings and has improved the visualization of vascular structures, lymph nodes, and the oropharynx [13]. However, the shapes of lesions and lymph nodes seen on gantry tilt scanning images are different from those on the original CT images.…”

Section: Introductionmentioning

confidence: 98%

Clinical evaluation of a newly developed method for avoiding artifacts caused by dental fillings on X-ray CT

Nakae

Saito

Minamoto

et al. 2007

Radiol Phys Technol

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To evaluate the clinical usefulness of gantry tilt scanning as an image reconstruction technique for avoiding artifacts caused by metallic dental fillings. Gantry tilt scanning was used with multidetector-row computed tomography for imaging in patients with dental fillings. Using a novel PC-based program, the oblique images obtained were reconstructed to transverse images using nearest neighbor and bilinear interpolation methodologies in order to avoid metallic streak artifacts. Coronal images were reformatted with the reconstructed transverse images, and the continuity of the reconstructed images was evaluated. Gantry tilt scanning was performed in 12 patients with metal artifacts, and the original and reconstructed images were classified into four grades and assessed by two radiologists. Results of the clinical evaluation indicated that the original images with artifacts, only 4% had good image quality in the region around the medial pterygoid muscle, only 8% depicted areas around the internal carotid artery and internal jugular vein, and only 12% could depict the areas around the parotid gland in the clinical evaluation. These values were improved to 60, 96, and 100%, respectively, in the reconstructed transverse images. Gantry tilt scanning as an image reconstruction technique improves image quality and removes most, if not all, artifacts caused by metallic dental fillings. The resulting images can be used in the evaluation of oropharyngeal lesions in patients with dental fillings.

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Artifact Assessment in the Skull Base Region of Head CT Images with Various Tilt Angles Relative to the Orbitomeatal Line

Tsuda

2024

Nippon Hoshasen Gijutsu Gakkai Zasshi

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Evaluation of Gantry Tilt Correction in Multi Detector-row CT : Effect on Multi-Planar Reconstruction Images

Cited by 5 publications

References 5 publications

Exploiting the Tomographic Nature of the Ultrasound, Could Processed Ultrasound Images Be a Viable Alternative to Ct or MRI?

Exploiting the Tomographic Nature of the Ultrasound, Could Processed Ultrasound Images Be a Viable Alternative to Ct or MRI?

Clinical evaluation of a newly developed method for avoiding artifacts caused by dental fillings on X-ray CT

Artifact Assessment in the Skull Base Region of Head CT Images with Various Tilt Angles Relative to the Orbitomeatal Line

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