Background Plaque enhancement after gadolinium contrast administration may assess plaque instability and response to medical therapy. We used high‐resolution vessel wall imaging evaluate changes in morphologic pattern treatment with high‐intensity statins. Methods Patients a history of stroke or transient ischemic attack attributable intracranial atherosclerotic disease underwent 7‐T imaging. T1 T1+gadolinium sequences were obtained at baseline. Follow‐up images acquired minimum 6 months the...

Objective: To assess the agreement between semiautomatic 3D measurements and manual derived from WBCT images in patients with end-stage ankle osteoarthritis (AO) who underwent total replacement (TAR). Methods: In this retrospective, IRB-approved study (ID #201904825), we evaluated TAR via lateral trans-fibular approach for OA. The included 14 ankles patients. Raw multiplanar data were analyzed using CubeVue® software. Lateral talar station (LTS) was obtained sagittal plane, while hindfoot...

Objective: The objective of the study was to assess efficacy LapiCotton procedure on patients with hallux valgus (HV) combined medial longitudinal arch collapse. Methods: Preoperative and postoperative weight-bearing computed tomography (WBCT) scans were obtained from HV submitted procedure. Semi-automatic measurements applied 22 WBCT images across 11 enrolled in using a software package (Bonelogic, Disior™, Helsinki, Finland). Significance level set at 0.05. Results: angle (HVA)...

The degree of internal carotid artery (ICA) stenosis determined by criteria from the North American Symptomatic Carotid Endarterectomy Trial (NASCET) is not most accurate index to assess distal flow compromise. Distal ICA perfusion also factors such as tandem and collateral circulation. Quantification end-organ ocular using non-invasive laser speckle flowgraphy (LSFG) may provide insights into flow. This study prospectively assessed LSFG.Eighteen patients with symptomatic underwent LSFG...

Category: Midfoot/Forefoot; Hindfoot Introduction/Purpose: Flattening of the longitudinal arch foot (Flatfoot) can represent a normal spectrum morphology and alignment. The issue comes when is collapsing progressively, what now termed Progressive Collapsing Foot Deformity (PCFD). Literature on asymptomatic flatfoot scarce since patients do not seek medical attention. Alignment differences between PCFD have been established might key-step in understanding predictors PCFD. objective this...

Introduction/Purpose: Interpositional arthroplasty (IPA) is a motion-preserving surgery in patients with advanced hallux rigidus. Literature displays several complications after the procedure including transfer metatarsalgia, cock-updeformity and infection. In finite element model, shortening of first metatarsal was associated increased plantar pressure on lateral rays during gait. Additionally, there are reports positive correlation between valgus metatarsalgia second,third fourth...

<title>Abstract</title> Background The volume of hemorrhage is a critical factor in predicting outcomes following aneurysmal subarachnoid (aSAH). Although grading scales such as the Fisher score are extensively used, their subjective nature can lead to inaccuracies quantifying total blood. We analyzed large cohort patients with aSAH an automated software for precise quantification volume. primary aim identify clear thresholds that correlate likelihood complications post-aSAH, thereby...

Weightbearing cone-beam computed tomography (WBCT) has proven useful for analysis of structural changes the foot and ankle when compared to conventional radiographs. WBCT allows extraction distance coverage mapping metrics, which may provide novel insight into hallux rigidus (HR). This study retrospectively assessed HR joint space using in a case-control study.

Background: The main goal of this study was to evaluate postoperative changes in the length first metatarsal (M1) and proximal phalanx hallux (P1) after acellular dermal allograft interpositional arthroplasty (ADA-IPA). We hypothesized that there would be a shortening ray at metatarsal, phalanx, or both. Methods: In retrospective study, we assessed patients who underwent ADA-IPA between 2019 2022. On standing anteroposterior (AP) foot radiographs, measured (M1), second (M2), (P1), entire...

Objective: This cadaveric pilot study was to develop a weight bearing computed tomography (WBCT) three-dimensional (3D) distance mapping algorithm that would allow for detection of syndesmotic instability. Methods: Pilot study, two specimens. Syndesmotic instability induced by release all ligaments through conventional lateral ankle approach. WBCT imaging under simulated acquired before and after destabilization. incisura gutter distances were assessed using 3D algorithm. Results: We found...

Introduction: Hemorrhage volume affects the risk of developing complications after aneurysmal subarachnoid hemorrhage (aSAH). This is quantified subjectively through Fisher Scale. We developed an automated method to quantify intracranial and determine aSAH. Methods: CT scans patients with aSAH were analyzed. An image-processing algorithm was designed in MATLAB volume. The region-growing 3D k-means clustering. Two independent raters manually measured volumes using PACS correlated these...

Introduction: The enhancement of atherosclerotic plaques after the intravenous administration gadolinium (Gd) has been correlated with presence culprit in patients acute strokes due to underlying intracranial atherosclerosis (ICAS). A new method objectively quantify Gd-enhancement was used monitor over time an stroke. Currently there is no imaging accurately activity. Methods: Patients stroke or transient ischemic attack caused by ICAS were included. Every patient started on high-dose...

Introduction/ Purpose:Peritalar subluxation (PTS) is a crucial feature of Progressive Collapsing Foot Deformity (PCFD). Surrounding structures assume distinct behaviors, contributing to different disease deformities (classes). One its most traditional aspects the midfoot abduction (class B), usually noted by lateral deviation distal at talonavicular joint. This finding commonly leads surgeons perform column lengthening osteotomy for correction, complex surgery with potential complications....

Introduction Aneurysmal subarachnoid hemorrhage (aSAH) can lead to life‐threatening complications such as vasospasm and hydrocephalus. The incidence of these events is influenced by the volume intracranial hemorrhage. Fisher score a subjective adjudication SAH volume. We developed an objective semi‐automated method quantify Moreover, we evaluated association aSAH with Methods A custom image segmentation algorithm quantifying was implemented in MATLAB. retrospectively measured from...

Introduction The severity of internal carotid artery (ICA) atherosclerosis is assessed through measurements degree stenosis. This approach does not factor in mechanisms compensating for reduced distal perfusion, such as collateral circulation. An alternative evaluating stenosis based on downstream changes ocular perfusion. Laser speckle flowgraphy (LSFG) a non‐invasive tool that quantifies intraocular blood flow. pilot study investigated whether LSFG metrics could be surrogates Additionally,...

Category: Ankle Arthritis; Other Introduction/ Purpose: Lower limb alignment assessment is commonly performed using two-dimensional (2D) conventional- radiographs. Weight-Bearing Computed-Tomography (WBCT) imaging that allows concomitant 3D of the hip, knee, ankle, and foot, a more complete multidimensional entire overall lower now possible. The aims this study were: (1) to characterize normal relative center Hip, Knee, joints in relation weight bearing Foot Tripod cohort healthy control...

Category: Midfoot/Forefoot; Trauma Introduction/Purpose: Lisfranc complex stability, primarily coming from the tarsometatarsal ligaments, is crucial for midfoot integrity. It has been shown that injuries can lead to issues, such as arthritis when not properly diagnosed/treated. Previous studies have estimated volumes of articulating joint surgically confirmed Ligament injuries, but no study assessed joints and space-of-interest Complex in patients with arthritis. The objective this...

Category: Other; Midfoot/Forefoot Introduction/Purpose: WBCT provides anatomical imaging that allows for extraction of metrics characterizing three-dimensional (3D) joint surface interactions. Three-dimensional Distance-Mapping (DM) and Coverage-Mapping (CM) use images to evaluate multiplanar elements Hallux Rigidus (HR) through analyzing space coverage across entire bony interfaces. Previous methods have struggled characterize reliable assessment these deformity patterns is essential in...

Category: Bunion Introduction/Purpose: Three-dimensional (3D) Distance-Mapping (DM) and Coverage-Mapping (CM) use WBCT images to evaluate multiplanar elements of Hallux Valgus (HV), such as sesamoid subluxation, through analyzing joint space coverage across entire bony interfaces. Previous methods have struggled characterize subluxation consistently, the reliable assessment these deformity patterns is essential in guiding HV treatment impacts recurrence rates following correction. The...

Category: Midfoot/Forefoot; Bunion Introduction/Purpose: First ray or medial column instability has been linked to the development of hallux valgus deformity (HVD), in part due potential Lisfranc joints and ligamentous complex. However, no study assessed 3D weight- bearing (WB) relationship complex patients with confirmed valgus, particularly at articulating surface first tarsometatarsal joint second metatarsal cuneiform space, commonly described as primary region- of-interest In this...

Category: Bunion; Midfoot/Forefoot Introduction/Purpose: The first-ray and the medial column play a crucial role in preserving tripod of foot. Changes to structural properties first-ray, along with collapse medial-longitudinal-arch, have been associated hallux valgus (HV). Thus, restoring plays an important when correcting mechanical function foot setting HV combined medial-longitudinal-arch collapse. LapiCotton technique combines advantages Cotton osteotomy modified Lapidus procedures by...

Category: Midfoot/Forefoot; Bunion Introduction/Purpose: Interpositional arthroplasty (IPA) is a motion-preserving surgery in patients with advanced hallux rigidus. Literature displays several complications after the procedure including transfer metatarsalgia, cock-up deformity and infection. In finite element model, shortening of first metatarsal was associated increased plantar pressure on lateral rays during gait. Additionally, there are reports positive correlation between valgus...