Journals
2026 EN
Cao Tuan Todd · Prentice Catherine · Wang Qingxia Jenny
+1 more
ABSTRACT This study investigates how the gaps between current financial status and financial aspirations or obligations shape consumer well‐being and luxury preferences. Drawing on self‐discrepancy and regulatory focus theories, this study uncovers how financial actual–ideal and actual–ought discrepancies activate different compensatory behaviors through consumers' well‐being states (eudaimonic vs. hedonic). Eight studies including six experimental and two cross‐sectional designs ( N = 1132) were conducted to test the proposed hypotheses. The results show that financial actual–ideal discrepancies increase, whilst actual–ought discrepancies reduce luxury preference. Eudaimonic well‐being mediates the relationship between financial actual–ought discrepancies and luxury preference, while hedonic well‐being shows no mediation effect for either self‐discrepancy type. The effect of financial actual–ideal discrepancy on luxury preference was moderated by access‐based luxury formats, with ideal‐discrepant consumers preferring renting and second‐hand options over co‐ownership. This study contributes to positive psychology and luxury marketing by linking consumers' financial status, well‐being, and luxury preference. This study also provides managerial guidance on aligning campaign timing strategies with consumers' financial self‐discrepancies and highlights societal implications for fostering inclusivity and addressing ethical concerns in luxury preference.
Journals
2026 EN
Buck Deborah · O'Neill Adam · Mulligan Lee D.
+8 more
ABSTRACT In England and Wales, approximately 8% of prisoners aged 50 and over are likely to have dementia/MCI, but they do not receive equivalent care to their counterparts in the community. We previously designed DECISION (Dementia and Mild Cognitive Impairment in prison), a care pathway and training/awareness package for use in prison. The aim of this article is to describe the development of an initial programme theory (IPT) and logic model for the DECISION care pathway. Development of the IPT and logic model was an iterative process involving: i) an umbrella review approach to synthesising information from seven systematic reviews of dementia in prison; ii) co‐design workshops with key stakeholders including experts by experience; and iii) reviewing our previous qualitative work. Key elements of the IPT and logic model include specialist training for and ongoing supervision of dementia care coordinators; ageing awareness training for all staff in prison; use of two cognitive screening tools; and release planning, including awareness‐raising among probation and third sector groups who work with people released from prison who have dementia/MCI. The IPT and logic model will provide stakeholders with a proposed framework for the innovation or further development of dementia care and support in prison.
Journals
2026 EN
Ling Yibin · Frank Catherine H. · Kondo Naoki Dominguez
+3 more
Abstract Background High Dose Rate (HDR) brachytherapy delivers concentrated radiation to the tumor by placing a high‐dose‐rate radioactive source directly inside the target. However, the sharp dose falloff also increases susceptibility to errors and uncertainties. Purpose To enhance source localization accuracy relative to room coordinates and the implant, we optimize the design of a flat‐panel‐based source localization system for HDR brachytherapy. Methods Gamma rays from the Ir‐192 Flexisource were simulated with Monte Carlo for image reconstruction. A 50 × 50 cm 2 flat‐panel detector was placed 15 cm beneath the couch, in which four tungsten ball bearings (BB) are attached. The source location relative to the couch was determined via triangulation. We assessed source localization accuracy based on couch‐BB positions, sizes, BB‐to‐source distance (BSD), and BB‐to‐detector distance (BDD). Since the implant can shift independently, determining the source location relative to the implant, rather than room coordinates, is critical for target dosimetry. To achieve this, a dummy wire containing six tungsten BBs, aligned linearly with increasing separations, was inserted through one of the posterior implanted catheters. The source position relative to the implant was then determined using a rigid transformation that best matched the wire‐BB projections. Results Relative to the room coordinates using the couch‐BBs, the proposed system achieves 0.78 mm accuracy. Localization error increases with larger BSD and smaller BDD, ranging from 0.3–2.5 mm (BSD: 10–30 cm) and 0.3–1.2 mm (BDD: 30–10 cm). Introducing implant motion (15 mm translation, 10∘ $^ $ pitch) resulted in 15.8 mm source localization error in room coordinates, while the proposed wire‐BB registration method reduces the error to 1.26 mm relative to the implant. Conclusion The study demonstrates the feasibility of using a flat‐panel detector, couch‐attached markers, and a dummy wire for robust localization of the HDR brachytherapy source relative to both the room coordinates and the implant.
Journals
2026 EN
Zimmermann Judith · Vincent Jana · Robb Fraser
+3 more
Abstract Purpose Supine breast MRI has the potential to improve over standard prone breast magnetic resonance imaging (MRI) in terms of efficiency and image quality, image alignment with diagnostic and treatment procedures, and overall accessibility. This study aims to characterize potential technical challenges of imaging in the supine position: (i)B 0 }_0 $$ field inhomogeneities, (ii)B 1 + }_1^{+} $$ variations, (iii) respiratory‐induced breast motion, and (iv) supine breast geometry. Methods Ten healthy subjects were scanned at 3T in both prone and supine positions to quantify and compare (i) and (ii) between both positions, and to assess (iii) in the supine position. Breast image volumes from a wider population (N = 40, healthy volunteers and patients) were analyzed to obtain breast shape metrics to characterize (iv). ResultsB 0 }_0 $$ field inhomogeneity increased from prone positioning (2SD:122 Hz ± 25 Hz $$ 122\kern0.2em \pm 25\kern0.2em to supine positioning (2SD:152 Hz ± 15 Hz $$ 152\kern0.2em \pm 15\kern0.2em , andB 1 + }_1^{+} $$ flip angle variations (from prescribed30 ∘$$ {30 circ were greater in the supine position (2SD ranging7 ∘$$ {7 circ } $$ to13 ∘$$ {13 circ than in the prone position (2SD ranging6 ∘$$ {6 circ } $$ to8 ∘$$ {8 circ . Breast tissue displacement (median [IQR] across all analyzed locations and subjects) was similar along A‐P (1.4 [0.5] mm) and R‐L (1.9 [1.5] mm) directions. Breast geometry varied greatly, with the outer breast perimeter ranging from 34 to 68 cm, and maximum breast tissue thickness ranging from 2 to 9 cm. Conclusion Supine positioning for breast MRI may lead to greaterB 0 }_0 $$ inhomogeneities and greaterB 1 + }_1^{+} $$ variations when compared to prone positioning, and breast motion can be substantial. Breast geometry varies greatly among the female population, and shape metrics can inform supine‐dedicated coil development.
Journals
2026 EN
Manson Tabitha J. · Thomas David L. · Günther Matthias
+4 more
Abstract Purpose Tracer kinetic models are used in arterial spin labeling (ASL); however, deciding which model parameters to fix or fit is not always trivial. The identifiability of the resultant system of equations is useful to consider, since it will likely impact parameter uncertainty. Here, we analyze the identifiability of two‐compartment models used in multi‐echo (ME) blood–brain‐barrier (BBB)‐ASL and evaluate the reliability of the fitted water‐transfer rate( k w k}_w $$ ). Method The identifiability of two variants of a two‐compartment model (referred to here as “series” and “parallel”) were analyzed using sensitivity matrix and Monte‐Carlo simulation methods, the latter including the effects of noise and fixed‐parameter error. ME‐ASL data were collected at 3T in 25 cognitively normal participants (57–85 y). In one volunteer, additional scans were acquired to estimate noise. Fits for whole‐gray‐matterk w $$ {k}_w $$ were performed with a theoretically identifiable version of the model. Results All models needed one or more fixed parameters to be structurally identifiable, with different combinations required for each. Practical identifiability analysis yieldedk w $$ {k}_w $$ estimates with a median absolute error of 29% (parallel model) and 33% (series model). Fits to data yielded mediank w $$ {k}_w $$ values of 0 (parallel) and 96 min −1 (series). Conclusion We used identifiability analysis to determine an appropriate BBB‐ASL model for acquired data. Through simulations we showed that parameter estimates depend on model selection and the value of fixed parameters. We demonstrated that fixed‐parameter value and errors significantly impact the reliability ofk w $$ {k}_w $$ values obtained from acquired ME‐ASL images, even with structurally identifiable models.
Journals
2026 EN
Hess Jeremiah J. · Moran Catherine J. · Shah Preya
+4 more
ABSTRACT Purpose Supine breast MRI has the potential to improve patient comfort compared to prone breast MRI, in addition to providing images in the same position as subsequent treatment protocols. Novel flexible coil arrays have enabled high SNR and parallel imaging in supine breast imaging, but the combined effect of coil and patient positioning on SNR has yet to be investigated. The aim of this study is to use a tissue‐independent metric to account for tissue deformation to compare SNR between prone and supine positions, using appropriate coils for each. Methods Relative SNR (rSNR) metric is proposed as the ratio of SNR between a breast coil and a body coil. This metric is demonstrated to be tissue‐independent, allowing for easier SNR comparisons in cases of tissue deformation. We scanned 10 female subjects and compared the rSNR in segmented regions consisting of breast tissue, chest wall, and axilla between prone and supine breast imaging. Results The rSNR was significantly higher in the breast tissue and chest wall in the supine position for all cases. The axilla rSNR was significantly higher in supine for four cases, with another four significantly higher in prone, and two showing no statistical difference. Using a distance‐from‐coil analysis, we found that the tissue is closer to the coil in supine, and that the supine coil provided higher SNR at distances closer than 4cm. Conclusion Our results show that using a surface array coil in the supine position can provide higher SNR than a standard setup in most subjects for most relevant regions of breast MRI.
Journals
2026 EN
Su Juan · Petenzi Thomas · Barbillon Grégory
+4 more
ABSTRACT Binder‐free electrodes are critical for advancing supercapacitor performance. Here, we explore the development of multi‐wall carbon nanotubes (MWCNTs) electrodes for supercapacitors by replacing conventional non‐conductive polymer binders, such as poly(vinylidene fluoride‐ co ‐hexafluoropropylene) (PVDF‐HFP), with a conductive polymer, poly(3,4‐ethylenedioxythiophene) (PEDOT). PEDOT/MWCNT composite films were synthesized and characterized in an aqueous medium using an electrochemical quartz crystal microbalance (EQCM) and an advanced ac ‐electrogravimetric technique to investigate their charge storage mechanisms and ionic transfer kinetics. Compared to MWCNTs/PVDF‐HFP and pure PEDOT films, the PEDOT/MWCNT composite demonstrates enhanced electrochemical performance, with improved ion concentration and reduced interfacial resistance. The EQCM analysis reveals distinct mass transfer behaviors, highlighting the role of anions, cations, and free water molecules at the interface of electrodes. Ac‐electrogravimetry investigation further identifies the kinetics of ion transfer and the relative concentration of each species, showing that the composite film facilitates efficient charge storage. This work provides a new insight into understanding the interfacial behavior of binder‐free PEDOT/MWCNT electrode.
Journals
2026 EN
Hamilton Gavin · Gamboa Nicole A. · Schlein Alex N.
+8 more
ABSTRACT The aim of this study is to examine cervix‐adapted versions of steady‐state multi‐parameter MRS (SMP MRS) and flip‐angle‐corrected multi‐parameter MRS (CMP MRS), comparing estimated cervix T1 w and T2 w for the two sequences. CMP MRS and SMP MRS were adapted from liver versions of the sequences, adding long TR acquisitions to better estimate cervix T1 w . CMP MRS differs from SMP MRS by correcting for inaccurate B1 calibration. Both CMP MRS and SMP MRS were acquired at 3 T in 13 adult female subjects (10 healthy, 3 with cancer). Values of T1 w and T2 w were estimated from both sequences, and the relationship between the values was examined. While there was no significant difference in T1 w given by the two sequences (CMP T1 w = 1568 ms, SMP T1 w = 1571 ms, p = 0.95; SMP T1 w = 0.657 CMP T1 w + 541 ms, r = 0.36), there was a single case where SMP MRS underestimated T1 w by over 400 ms. A significant difference was observed in T2 w (CMP T2 w = 39.9 ms, SMP T2 w = 45.6 ms, p = 0.001; SMP T2 w = 0.812 CMP T2 w + 13.3 ms, r = 0.87). Cervix adapted CMP MRS and SMP MRS both successfully estimated values of T1 w and T2 w , though the single case where SMP MRS gave a non‐physical T1 w suggests CMP MRS may be better suited for cervix T1 w estimation.
Journals
2026 EN
Edwards Sara · Kolcun Kaitlyn · Bochenek Jeanie
+7 more
Abstract Transitions of care are the movement of a patient from one care setting or provider to another. Interprofessional collaboration is critical in ensuring patient safety and satisfactory health outcomes. Each time an interprofessional team transfers a patient, the team performs three important roles: representing the patient, providing patient information for other team members, and coordinating the transition. Poor transitions of care may contribute to negative health outcomes, especially for patients with chronic health conditions, complex medication regimens, and high‐risk treatments. We present a case study of a patient with complicated chronic obstructive pulmonary disease that depicts the importance of successful interprofessional collaboration during the transition of care from hospital to home illustrating the unique contributions of the various disciplines involved in the patient's care.
Journals
2026 EN
Ali Muhammad · Niazi Abdul Rehman · Ashraf Urooj
+4 more
Asproinocybe paksitanica sp. nov. is described as a novel species and Asproinocybe daleyae as a new country record from moist temperate forest in Pakistan, based on morphological and molecular data. Morphologically the new species is characterized by a pileus with variable shades from light to chocolate brown, violet lamellae, light brown stipe (light purplish close to the lamellae) with prominently white striations. Microscopically, it possesses characteristic ellipsoid, nodulose basidiospores. Phylogenetic analyses of the nrDNA ITS region support that it belongs to Asproinocybe , a comparatively rare genus with few species so far reported. A phenotypical and phylogenetical comparison with allied taxa confirms our species as a new taxon and closest to A. sinensis .