Comparison of a tridimensional cephalometric analysis performed on 3T-MRI compared with CBCT: a pilot study in adults

ConclusionsWithin the main limitation of this pilot study, that is, the small sample, it is possible to state that cephalometric measurements on 3T-MRI seem to possess adequate reliability and repeatability and that they show satisfying agreement with values measured on CBCTs. An MRI examination does not expose patients to ionizing radiation and could provide an alternative to CBCT for three-dimensional cephalometrics in the future.
Source: Progress in Orthodontics - Category: Dentistry Source Type: research

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This study is to compare characteristics and treatment outcomes of CNO patients with spinal involvement. The retrospective cohort study included data from 91 pediatric patients with CNO. The diagnosis is based on Jannson ’s criteria with morphological confirmation (nonspecific chronic inflammation). Spine involvement detected by X-ray, computed tomography, magnetic resonance imaging, and bone scan in 29 (31.9%) patients. No differences in the family history, concomitant immune-mediated diseases between spinal (SpC NO) and peripheral (pCNO) forms of CNO have been revealed. Only 5 (10.2%) SpCNO patients (10.2%) had mon...
Source: Rheumatology International - Category: Rheumatology Source Type: research
Conclusion83.3% of the non-conjunctival origin OAML were FDG-avid tumors, with FDG PET/CT showing comparable sensitivity to that of MRI. FDG PET/CT detected unsuspected extraocular lymphoma involvement in 14% of the patients. FDG PET/CT performed for staging of non-conjunctival origin OAML may thus guide therapeutic management.
Source: EJNMMI Research - Category: Radiology Source Type: research
AbstractSinusoidal obstruction syndrome (SOS) is a rare liver disorder due to hepatic vascular injury. Its rapid and accurate diagnosis is crucial for patient survival. SOS is often established clinically, based on Baltimore, modified Seattle, or European Society for Blood and Marrow Transplantation (EBMT) criteria. Unfortunately, such criteria are not highly specificity and fail to provide a timely, reliable differential diagnosis. The use of noninvasive imaging techniques, such as ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI), and fluorodeoxyglucose positron emission tomography/computed tomo...
Source: Insights into Imaging - Category: Radiology Source Type: research
This article discusses the initial experience over a few studies in progress at an orthopaedic center. The custom design of total ankle replacements, the patellofemoral alignment after medial ligament reconstruction, the overall architecture of the foot bones in the diabetic foot, and the radiographic assessment of the rearfoot after subtalar fusion for correction of severe flat foot have all taken advantage of the 3D and weight-bearing feature of relevant CT scans. To further support these novel assessments, techniques have been developed to obtain 3D models of the bones from the scans and to merge these with state-of-the...
Source: Seminars in Musculoskeletal Radiology - Category: Radiology Authors: Tags: Review Article Source Type: research
AbstractThe healing process, occurring after intra-cardiac and intra-vascular device implantation, starts with fibrin condensation and attraction of inflammatory cells, followed by the formation of fibrous tissue that slowly covers the device. The duration of this process is variable and may be incomplete, which can lead to thrombus formation, dislodgement of the device or stenosis. To better understand this process and the neotissue formation, animal models were developed: small (rats and rabbits) and large (sheep, pigs, dogs and baboons) animal models for intra-vascular device implantation; sheep and pigs for intra-cardi...
Source: The International Journal of Cardiovascular Imaging - Category: Radiology Source Type: research
This article reviews the weight-bearing imaging methods in the diagnosis and monitoring of patients with adolescent idiopathic scoliosis (AIS), a three-dimensional (3D) deformity of the spine with unknown etiology. The apical vertebrae in AIS rotate away from the midline in a complex 3D pattern that formerly could only be appreciated by computed tomography (CT). Despite its superb anatomical delineation, CT is not ideal due to high radiation and scanning in either the supine or prone position; hence the full effect of gravity on the spinal curvature cannot be assessed. The introduction of low-dose stereoradiography with th...
Source: Seminars in Musculoskeletal Radiology - Category: Radiology Authors: Tags: Review Article Source Type: research
Semin Musculoskelet Radiol 2019; 23: 594-602 DOI: 10.1055/s-0039-1697940Clinical management of several pathologies of the lower extremity joint relies on instrumental imaging evaluation. The assessment of joint changes with physiologic load requires studies using positions with the patient standing. Weight-bearing radiographs are the mainstay for the evaluation of several conditions such as knee osteoarthritis, pes planus, and hallux valgus, in particular to obtain measurements of articular parameters, especially for presurgical studies. In the last few years, dedicated magnetic resonance imaging and computed tomography sc...
Source: Seminars in Musculoskeletal Radiology - Category: Radiology Authors: Tags: Review Article Source Type: research
ConclusionsWe present an integrated approach for weakly supervised multimodal image registration. Achieving promising results due to the exploration of intermediate shape features as registration guidance encourages further research in this direction.
Source: International Journal of Computer Assisted Radiology and Surgery - Category: Intensive Care Source Type: research
CONCLUSIONS: This work demonstrate the clinical acceptability of substituting MR converted RSP images instead of CT for IMPT planning of prostate cancer. This further translates into higher contouring accuracy along with lesser imaging dose. PMID: 31734604 [PubMed - as supplied by publisher]
Source: Radiotherapy and Oncology : journal of the European Society for Therapeutic Radiology and Oncology - Category: Radiology Authors: Tags: Radiother Oncol Source Type: research
If you want residents to moan, start out the conversation with “when I was a resident….” Well, when I was a resident, computed tomography (CT) scans had just been introduced into the hospital, ultrasound was a rarely used procedure, and magnetic resonance imaging and positron emission tomography were still in the future. We did tomograms, pyelograms, veno grams, and various scans of the spleen, liver, and brain. The imaging options available today are overwhelming. Three-dimensional reproductions of any part of the body; bedside ultrasounds of the brain, heart, abdomen, and pelvis; and scans that show fu...
Source: The Journal of Emergency Medicine - Category: Emergency Medicine Authors: Tags: Book and Other Media Reviews Source Type: research
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