Emphysematous pyelonephritis complicated by a perirenal hematoma was diagnosed by computerized tomography. The computerized tomography scan was normal 3 months previously. Computerized tomography may be the procedure of choice to diagnose and stage emphysematous pyelonephritis.
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http://dx.doi.org/10.1016/s0022-5347(17)47538-0 | DOI Listing |
Oral Maxillofac Surg
January 2025
Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
Purpose: To investigate the anatomical variations and measure the distances between surgically relevant structures in the maxilla associated with Le Fort I osteotomy in patients with maxillary canting using cone beam computed tomography (CBCT).
Methods: CBCT scans of 63 patients (21 males and 42 females) with maxillary canting who were indicated for orthognathic surgical planning were retrospectively investigated and analyzed. The distances of the relevant anatomical structures, including the descending palatine artery, pterygomaxillary junction, infraorbital foramen, and nasolacrimal duct opening, were measured with the key anatomical landmarks to evaluate their variations.
Eur Radiol
January 2025
Department of Radiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Objectives: To characterize the radiological findings of desmoid-type fibromatosis (DF).
Methods: This two-institution retrospective study included 152 patients with pathologically confirmed DF who underwent computed tomography (CT), magnetic resonance imaging (MRI), or 18F-fluorodeoxyglucose-positron emission tomography (FDG-PET)/CT between January 2001 and February 2024. Two board-certified radiologists independently evaluated the CT, MRI, and FDG-PET/CT findings, and a third board-certified radiologist resolved discrepancies.
Int J Implant Dent
January 2025
Department of Advanced Prosthodontics, Hiroshima University Graduate School of Biomedical and Health Sciences, 1-2-3 Kasumi, Minami-ku, Hiroshima City, 734-8553, Hiroshima, Japan.
Purpose: The study aimed to examine the usefulness of a novel density measurement drill for evaluating cancellous bone density by examining the correlation between computed tomography (CT)-based Misch bone density classification and drilling torque value.
Methods: Bovine ribs were used as the drilling sites for implant placement. Multidetector CT (MDCT) was performed after contrast materials were attached to the drilling sites.
Am J Biol Anthropol
February 2025
Department of Sociology, Purdue University, West Lafayette, Indiana, USA.
Objectives: Sharing micro-computed tomographic (μCT) scans of teeth increases data accessibility and reduces the need for repeated scans of any given specimen. However, the use of the same TIFF stacks or DICOMs by multiple individuals has the potential to introduce new sources of error. Here, we explore whether use of the same μCT scans by different persons produces comparable results.
View Article and Find Full Text PDFMed Phys
January 2025
National Institute for Mathematical Sciences, Daejeon, Republic of Korea.
Background: In X-ray computed tomography (CT), metal-induced beam hardening artifacts arise from the complex interactions between polychromatic X-ray beams and metallic objects, leading to degraded image quality and impeding accurate diagnosis. A previously proposed metal-induced beam hardening correction (MBHC) method provides a theoretical framework for addressing nonlinear artifacts through mathematical analysis, with its effectiveness demonstrated by numerical simulations and phantom experiments. However, in practical applications, this method relies on precise segmentation of highly attenuating materials and parameter estimations, which limit its ability to fully correct artifacts caused by the intricate interactions between metals and other dense materials, such as bone or teeth.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!