Delayed Spontaneous Thrombosis of Neglected Direct Carotid-Cavernous Fistula: A Case Report

Direct carotid-cavernous fistula (CCF) refers to direct communication between the cavernous portion of the internal carotid artery (ICA) and the cavernous sinus due to rent in the ICA, most commonly secondary to trauma. These are generally high-flow fistula and rarely resolve spontaneously. We report a case of a young male who developed features of direct CCF after trauma, was denied any treatment for 4 years, and then presented with spontaneous thrombosis of the fistula and a residual large pseudoaneurysm of the cavernous segment of the right ICA, which was subsequently managed with parent vessel occlusion

The Hidradenitis Suppurativa Quality of Life (HiSQOL) score: development and validation of a measure for clinical trials

Background Hidradenitis suppurativa (HS) is a chronic, inflammatory condition that can have a large negative impact on health‐related quality of life (HRQOL). A reliable and validated measure of HS‐specific HRQOL in clinical studies is needed. Objective To develop and validate the Hidradenitis Suppurtiva Quality Of Life (HiSQOL©) scale, for clinical trial measurement of HS‐specific HRQOL. Methods Stage 1: Qualitative concept elicitation (CE) interviews were conducted with HS patients in Denmark (DK) (n = 21) and the United States (US) (n=21). Stage 2: Cognitive debriefing (CD) interviews were performed with US HS patients (n = 30) and Danish HS patients (n=30). Stage 3: Observational study of 222 HS patients in the US was conducted for item reduction, measure validation and assessment of psychometric properties. Stage 4: Observational study of 215 HS patients in Denmark was conducted to confirm the psychometric structure derived in stage 3. In both studies ‐ the Dermatology Life Quality Index, Hospital Anxiety and Depression Scale, and numerical rating scale for pain ‐ were also included. Results In CE, 99 items were generated and reduced to 41 after removing duplicates. In CD, 2 items were added and 1 items removed. A 42‐item instrument was psychometrically assessed. Based on psychometric analyses and patient input, the instrument was reduced to 17 items that had strong psychometric properties in both US and DK samples

Compressional-mode resonances in the molybdenum isotopes: Emergence of softness in open-shell nuclei near A=90

"Why are the tin isotopes soft?" has remained, for the past decade, an open problem in nuclear structure physics: models which reproduce the isoscalar giant monopole resonance (ISGMR) in the "doubly-closed shell" nuclei, $^{90}$Zr and $^{208}$Pb, overestimate the ISGMR energies of the open-shell tin and cadmium nuclei, by as much as 1 MeV. In an effort to shed some light onto this problem, we present results of detailed studies of the ISGMR in the molybdenum nuclei, with the goal of elucidating where--and how--the softness manifests itself between $^{90}$Zr and the cadmium and tin isotopes. The experiment was conducted using the $^{94,96,98,100}$Mo($\alpha,\alpha^\prime$) reaction at $E_\alpha = 386$ MeV. A comparison of the results with relativistic, self-consistent Random-Phase Approximation calculations indicates that the ISGMR response begins to show softness in the molybdenum isotopes beginning with $A=92$.Comment: Accepted for publication to Physics Letters

Observation of superdeformation in Hg191

The first observation of superdeformation in the mass region A190 is reported. A rotational band of twelve transitions with an average energy spacing of 37 keV, an average moment of inertia scrF(2) of 110 Latin small letter h with stroke2 MeV-1, and an average quadrupole moment of 183 e b has been observed in Hg191; this band persists at low rotational frequency. These results are in excellent agreement with a calculation that predicts an ellipsoidal axis ratio of 1.65:1 for the superdeformed shape in this nucleus

Superdeformed band in Hg192

The observation of a superdeformed band in the nucleus Hg192 is reported. The band has sixteen transitions with an average energy spacing of 36 keV and an average dynamic moment of inertia scrI(2) of 112 Latin small letter h with stroke2 MeV-1. This band persists to rather low rotational frequency (Latin small letter h with stroke0.125 MeV) and is proposed to extend in spin from 10+ to 42+. No transitions linking the superdeformed states and the low deformation yrast levels were found and the decay out of the superdeformed band appears to be statistical. This is the second case of superdeformation in the 190 region

Feeding of superdeformed bands: The mechanism and constraints on band energies and the well depth

Entry distributions leading to normal and superdeformed (SD) states in Hg192 have been measured. A model, based on Monte Carlo simulations of γ cascades, successfully reproduces the entry distribution for SD states, as well as all other known observables connected with the population of SD states. Comparison of experimental and model results, together with the measured SD entry distribution, suggest that the SD band lies 3.3-4.3 MeV above the normal yrast line when it decays around spin 10 and that the SD well depth is 3.5-4.5 MeV at spin 40

Nucleon alignment in 191Hg. A competing mechanism at moderate spins

Detailed spectroscopic studies of the discrete γ-rays feeding and deexciting a 41 2-, 4.6 MeV level in 191Hg are reported. The resulting decay scheme indicates single-particle nature for the states above the 41 2- level. At moderate spin, the corresponding particle alignment mode competes favorably with collective oblate rotation. It is suggested that this sequence is associated with a non-collective prolate shape (ε{lunate}=0.1-0.15, γ≅-120°)

Lifetime measurements in the superdeformed band of Hg192

Lifetimes were measured for transitions in the superdeformed band of Hg192 with the Doppler-shift attenuation method. The results yield an essentially constant quadrupole moment of 202 e b and indicate that the sidefeeding lifetimes are of the same order as the state lifetimes. The data are consistent with calculations using the cranked Woods-Saxon Strutinsky method with pairing

Excited superdeformed bands in 191Hg

Two weakly populated rotational bands have been observed in 191Hg with properties (energy spacings, moments of inertia and lifetimes) very similar to those of the previously reported superdeformed band. Based on cranked Woods-Saxon calculations, these structures are interpreted as the first excited bands in the superdeformed minimum of 191Hg. Comparisons between the data and the calculations highlight the role of specific orbitals at large deformations

Longitudinal Wobbling Motion in Au 187

The rare phenomenon of nuclear wobbling motion has been investigated in the nucleus Au187. A longitudinal wobbling-bands pair has been identified and clearly distinguished from the associated signature-partner band on the basis of angular distribution measurements. Theoretical calculations in the framework of the particle rotor model are found to agree well with the experimental observations. This is the first experimental evidence for longitudinal wobbling bands where the expected signature partner band has also been identified, and establishes this exotic collective mode as a general phenomenon over the nuclear chart