On the origin of MTF reduction in grating-based x-ray differential phase contrast CT imaging.

Background: The complementary absorption contrast CT (ACT) and differential phase contrast CT (DPCT) can be generated simultaneously from an x-ray computed tomography (CT) imaging system incorporated with grating interferometer. However, it has been reported that ACT images exhibit better spatial resolution than DPCT images. By far, the primary cause of such discrepancy remains unclear.

The effect of the position of the femoral endobutton on knee function in the posterior cruciate ligament reconstruction: a retrospective study.

Background: To investigate the effect of the position of the femoral endobutton on knee function in the posterior cruciate ligament reconstruction (PCLR).

Methods: A retrospective study was conducted to analyze 96 patients who underwent single-bundle reconstruction of posterior cruciate ligament (PCL) in our hospital from January 2020 to June 2023. The patients were divided into three groups according to the position of the endobutton on the lateral knee radiography.

Reduction of artifacts associated with missing data in coherent diffractive imaging.

Coherent diffractive imaging experiments often collect incomplete datasets containing regions that lack any measurements. These regions can arise because of beamstops, gaps between detectors, or, in tomography experiments, a missing wedge of data due to a limited sample rotation range. We describe practical and effective approaches to mitigate reconstruction artifacts by bringing uniqueness back to the phase retrieval problem.

The genetic origins and impacts of historical Papuan migrations into Wallacea.

The tropical archipelago of Wallacea was first settled by anatomically modern humans (AMH) by 50 thousand years ago (kya), with descendent populations thought to have remained genetically isolated prior to the arrival of Austronesian seafarers around 3.5 kya. Modern Wallaceans exhibit a longitudinal countergradient of Papuan- and Asian-related ancestries widely considered as evidence for mixing between local populations and Austronesian seafarers, though converging multidisciplinary evidence suggests that the Papuan-related component instead comes primarily from back-migrations from New Guinea.

Multiple Renal Infarctions in Spontaneous Double Renal Artery Dissection: A Case Report.

As spontaneous renal artery dissection (SRAD) is a rare cause of abdominal pain, bilateral dissection is an extremely rare event. Only approximately two hundred cases of SRAD have been reported in the literature. The diagnosis is often delayed due to the rarity of the disease and non-specific clinical presentations such as flank pain, hypertension, fever, nausea, vomiting, and hematuria, which can be often misdiagnosed as a genito-urinary infection or gastrointestinal or bowel disease.

[Thoracoabdominal Aneurysm in a Patient with an Axillo-bifemoral Bypass].

We report an extremely rare case of thoracoabdominal replacement after left axillo-bifemoral artery bypass surgery. The patient was a 33-year-old man who had undergone left axillo-bifemoral artery bypass surgery after total arch replacement due to lower extremity ischemia by stenosis of the elephant trunk graft 10 years previously. He was admitted to the emergency department with back pain.

Feasibility of Sub-milliSievert Low-dose Computed Tomography with Deep Learning Image Reconstruction in Evaluating Pulmonary Subsolid Nodules: A Prospective Intra-individual Comparison Study.

Rationale And Objectives: To comprehensively assess the feasibility of low-dose computed tomography (LDCT) using deep learning image reconstruction (DLIR) for evaluating pulmonary subsolid nodules, which are challenging due to their susceptibility to noise.

Materials And Methods: Patients undergoing both standard-dose CT (SDCT) and LDCT between March and June 2023 were prospectively enrolled. LDCT images were reconstructed with high-strength DLIR (DLIR-H), medium-strength DLIR (DLIR-M), adaptive statistical iterative reconstruction-V level 50% (ASIR-V-50%), and filtered back projection (FBP); SDCT with FBP as the reference standard.

Bi-cruciate stabilized total knee arthroplasty restores the native knee alignments better than conventional posterior stabilized total knee arthroplasty.

Introduction: This study aimed to compare the differences in the radiological, clinical, and functional outcomes and the estimated restoration rate of native knee alignment between total knee arthroplasty (TKA) with bi-cruciate stabilized (BCS) and posterior stabilized (PS) design.

Materials And Methods: This retrospective study included consecutive patients between 2020 and 2021 who underwent TKA. The patients were divided into two groups (group I, Journey II BCS TKA [106 knees]; group II, Persona PS TKA [106 knees]) after 1:1 propensity score matching.

Intra-individual Differences in Pericoronary Fat Attenuation Index Measurements Between Photon-counting and Energy-integrating Detector Computed Tomography.

Rationale And Objectives: The purpose of this study was to explore intra-individual differences in pericoronary adipose tissue (PCAT) fat attenuation index (FAI) between photon-counting detector (PCD)- and energy-integrating detector (EID)-CT.

Material And Methods: Patients were prospectively enrolled for a PCD-CT research scan within 30 days of EID-CT. Both acquisitions were reconstructed using a Qr36 kernel at 0.

Front-to-Back Arthroscopic Repair of Complete Lunotriquetral Ligament Injuries: A Case Presentation and Algorithm for Arthroscopic Management of Intercarpal Ligament Injuries.

The lunotriquetral intercarpal ligament (LTIL) is an important structure that equalizes the forces on the lunate imparted through the scapholunate intercarpal ligament. The extension moment of the triquetrum balances the flexion force of the scaphoid, positioning the lunate for efficient load transfer from the hand to the wrist. In contrast to the scapholunate intercarpal ligament, the LTIL is strongest volarly, with the most critical region being associated with the volar ulnocapitate ligament.

Subscapular Tunneling to Increase the Reach of Latissimus Dorsi Myocutaneous Flap: A Case Report.

The latissimus dorsi muscle or myocutaneous flap (LDMF) has long been a mainstay in the plastic surgeon's armamentarium, serving as a versatile and reliable tool for reconstructive procedures. Tunneling the LDMF through the subscapular route increases the reach to cover defects as far as nape of the neck. In this article, we report a case of LDMF routed through a subscapular route to cover impending hardware exposure at the nape region.

Adaptation of the German language version of the QUAlity of life assessment of spina bifida for adults (QUALAS-A-G).

Introduction: Spina bifida (SB) affects almost all activities in daily life and therefore also health-related quality of life (HRQOL). To assess the HRQOL of adults with SB, a self-reported QUAlity of Life Assessment of Spina bifida in Adults (QUALAS-A) was validated in English. The purpose of this study was to develop and validate a German version of QUALAS-A.

Accessing microbial natural products of the past.

Microbial natural products-low molecular weight compounds biosynthesized by microorganisms-form the foundation of important modern therapeutics, including antibiotics, immunomodulators, and anti-cancer agents. This perspective discusses and contrasts two emerging approaches for uncovering natural products of the past. On the one hand, ancestral sequence reconstruction allows recreating biosynthetic pathways that date back hundreds of millions of years.

Evaluation of the clinical utility of lateral cephalometry reconstructed from computed tomography extracted by artificial intelligence.

This study assessed the accuracy and reliability of artificial intelligence (AI)-reconstructed images of two-dimensional (2D) lateral cephalometric analyses of facial computed tomography (CT) images, which is widely used for the diagnosis of craniofacial deformities and in the planning of their treatment. Facial CT datasets from 40 patients were collected. Original 1 mm slices were reformatted to 3 mm, and then an AI algorithm reconstructed the 3 mm slices and converted them back to 1 mm to generate lateral cephalometric images.

A Physician-Centered Craniofacial Asymmetry Index for the Severity of Plagiocephaly: A Comparative Study of Assessment Methods.

Background: Plagiocephaly, wherein infants' head exhibits a diagonal asymmetry, is currently diagnosed based on physicians' subjective judgment. Discrepancies between physician and parent perspectives may result in dissatisfaction with treatment outcomes. This problem highlights the need for an objective assessment system aligning with physician-made clinical diagnoses.

Surgical Treatment for Scaphocephaly Using a Modified Melbourne Technique in Mexico: An Illustrative Case and Literature Review.

Craniosynostosis is the premature fusion of one or more skull vault sutures, most commonly the sagittal sutures, leading to a long, narrow head shape known as scaphocephaly. Surgery is recommended to create space for brain growth to treat scaphocephaly. Delayed treatment may require more complex surgery to achieve the desired head shape.

Burden of disease scenarios by state in the USA, 2022-50: a forecasting analysis for the Global Burden of Disease Study 2021.

Background: The capacity to anticipate future health issues is important for both policy makers and practitioners in the USA, as such insights can facilitate effective planning, investment, and implementation strategies. Forecasting trends in disease and injury burden is not only crucial for policy makers but also garners substantial interest from the general populace and leads to a better-informed public. Through the integration of new data sources, the refinement of methodologies, and the inclusion of additional causes, we have improved our previous forecasting efforts within the scope of the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) to produce forecasts at the state and national levels for the USA under various possible scenarios.

Evaluation of the flying focal spot technology in a wide-angle digital breast tomosynthesis system.

Purpose: We characterize the flying focal spot (FFS) technology in digital breast tomosynthesis (DBT), designed to overcome source motion blurring.

Approach: A wide-angle DBT system with continuous gantry and focus motion ("uncompensated focus") and a system with FFS were compared for image sharpness and lesion detectability. The modulation transfer function (MTF) was assessed as a function of height in the projections and reconstructed images, along with lesion detectability using the contrast detail phantom for mammography (CDMAM) and the L1 phantom.

Far-field mapping and efficient beaming of second harmonic by a plasmonic metagrating.

We study numerically and experimentally the second-harmonic generation (SHG) from rectangular metagratings of V-shaped gold nanoantennas. We show that by carefully engineering the array pitch to steer the diffraction orders toward the single antenna emission, the extracted signal is maximized. This enhancement is attributed to the angular overlap between the radiation pattern and array factor and is comparable to the improvement yielded by the coupling of surface lattice resonances (SLRs) with local modes.

Reconstructing the phase of vanadium oxides enables redox-catalysis manipulated reversible sulfur conversion for stable Zn-S batteries.

The naturally sluggish redox kinetics and limited utilization associated with the sulfur conversion in Zn/S electrochemistry hinder its real application. Herein, we report an phase reconstruction strategy that activates the catalytic activity of vanadium oxides for invoking redox-catalysis to manipulate reversible sulfur conversion. It was identified that the VO@C/S precursor derived from metal organic frameworks could be transformed into VO ·HO@C/S by a facile electrochemical induction process.

A multimetric health literacy analysis of phalloplasty techniques: Comparing artificial intelligence and online resources.

Background: This study aims to compare the informational quality of online and artificial intelligence (AI) - sources on different phalloplasty donor sites to assess reliability and accessibility.

Methods: A deidentified Google search was conducted using search phrases for forearm, thigh, back, and abdomen phalloplasty. The first ten websites for each donor site were included.

A case of simultaneous pancreatoduodenectomy and living donor liver transplantation for biliary cancer complicated with congenital biliary dilatation.

Background: In patients with pancreaticobiliary maljunction complicated by congenital biliary dilatation, the pancreatic enzyme flows back into the bile, leading to bile duct carcinogenesis. Although the biliary tract resection and reconstruction is well documented to decrease the rate of malignancy, cancer occurrence has been reported in the residual intrahepatic or intrapancreatic bile duct, even after resection. We report a case of multiple biliary tract cancers in the liver complicated by congenital biliary dilatation, whose tumor lesions were resected en bloc without disconnecting the biliary tract by simultaneous pancreatoduodenectomy and living donor liver transplantation.