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  1. Article ; Online: Neural mechanisms of odour imagery induced by non-figurative visual cues.

    Hossu, Gabriela / Fantin, Luca / Charroud, Céline / Felblinger, Jacques / Jacquot, Muriel / Ceyte, Hadrien

    Neuropsychologia

    2024  Volume 196, Page(s) 108836

    Abstract: Odour imagery, the ability to experience smell when an appropriate stimulus is absent, has widely been documented as being particularly difficult. However, previous studies have shown the beneficial effect of visual cues (e.g., pictures or words) to ... ...

    Abstract Odour imagery, the ability to experience smell when an appropriate stimulus is absent, has widely been documented as being particularly difficult. However, previous studies have shown the beneficial effect of visual cues (e.g., pictures or words) to facilitate performance in numerous tasks of olfactory nature. Therefore, the use of visual cues to evoke odours seems relevant. In this study, our interest is directed towards non-figurative coloured arrangements, which result from a patented technology and aim at chromatically representing any smell from its chemical composition and sensory description. The aim of this study was to characterise the neural mechanisms of odour imagery facilitated by these non-figurative coloured arrangements. Using functional magnetic resonance imaging, we recorded and compared hemodynamic responses during odour imagery facilitated by non-figurative coloured arrangements and pictures. Our findings reveal that the use of non-figurative coloured arrangements during odour imagery solicits olfactory and non-olfactory brain regions (orbitofrontal cortex, insula, hippocampus, thalamus, dorsolateral prefrontal cortex and supplementary motor area), which are mainly involved in olfactory processing and multimodal integration. Moreover, very similar cortical activity was found between the use of non-figurative coloured arrangements and pictures during odour imagery, with increased activity in the supplementary motor area during the use of coloured arrangements only. Overall, non-figurative coloured arrangements could become a robust tool to visually evoke odours without requiring prior familiarity with the depicted odour. Future studies should use psychometric measures to determine the relationships between brain activation, odour imagery ability and vividness of the generated odour images.
    MeSH term(s) Humans ; Odorants ; Cues ; Smell/physiology ; Imagery, Psychotherapy ; Brain/diagnostic imaging
    Language English
    Publishing date 2024-02-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 207151-4
    ISSN 1873-3514 ; 0028-3932
    ISSN (online) 1873-3514
    ISSN 0028-3932
    DOI 10.1016/j.neuropsychologia.2024.108836
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Comparison between scaphotrapeziotrapezoid arthrodesis and Pyrocardan® implant for isolated scaphotrapeziotrapezoid osteoarthritis.

    Cholley-Roulleau, Martin / Dautel, Gilles / Dap, François / Hossu, Gabriela / Bellemère, Philippe / Athlani, Lionel

    Orthopaedics & traumatology, surgery & research : OTSR

    2024  , Page(s) 103867

    Abstract: Introduction: Scaphotrapeziotrapezoid (STT) arthrodesis and Pyrocardan® implant for painful isolated STT osteoarthritis have shown good results, but no paper has compared their medium-term outcomes.: Hypotheses: Our main hypothesis would be that the ... ...

    Abstract Introduction: Scaphotrapeziotrapezoid (STT) arthrodesis and Pyrocardan® implant for painful isolated STT osteoarthritis have shown good results, but no paper has compared their medium-term outcomes.
    Hypotheses: Our main hypothesis would be that the Pyrocardan® implant, by preserving the carpal biomechanics, could lead to better wrist mobility. Our secondary hypotheses would be that no other clinical and radiological differences will be found between these two procedures at a mean 5 years follow-up.
    Patients: In this non-randomised retrospective study, performed at two healthcare facilities, we report and compare the outcomes of STT arthrodesis with staple fixation versus the Pyrocardan® implant in 38 patients (40 thumbs) from 2 previously published cohorts. Twenty-one patients with a mean age of 68 years (range, 46-79) underwent STT arthrodesis in facility 1. Seventeen patients with a mean age of 61 years (range, 41-80) received a Pyrocardan® implant in facility 2. Patients were reviewed at both facilities by the same examiner who performed a clinical and radiographical assessment.
    Results: At a mean follow-up of 8 years (range, 2-20 years) for the STT group and 5 years (range 3-8 years) for the Pyrocardan® group, we found no significant differences in the clinical and radiological outcomes between the two procedures except in wrist active extension and ulnar deviation, where Pyrocardan® appears to produce better mobility (extension 58°± 9 vs. 38°± 14 and ulnar deviation 35°[25, 40] versus 45°[40, 50]) (p<.001 and p<.008 respectively). The two surgical techniques led to significantly improvement in terms of pain relief, function, and strength. For the STT arthrodesis group, two complete non-unions were found (9%), while narrowing of the styloscaphoid joint space was found in eight thumbs (36%). For the Pyrocardan® group, four postoperative DISI (22%), four calcifications around the trapezium and/or distal scaphoid (22%) and one asymptomatic dislocation (6%) of the implant were observed.
    Discussion: Pyrocardan® implant seems to result in better mobility in extension and ulnar deviation. STT arthrodesis and Pyrocardan® implant to treat isolated STT osteoarthritis led to less pain, better strength and functional scores, and restored wrist stability. A future study with a larger population will be needed to confirm these results.
    Level of evidence: IV.
    Language English
    Publishing date 2024-03-12
    Publishing country France
    Document type Journal Article
    ISSN 1877-0568
    ISSN (online) 1877-0568
    DOI 10.1016/j.otsr.2024.103867
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Comparison of the Outcomes of Flexor Tendon Repair in Zone II Using the Original and Adjusted Strickland Scores and the 400-Points Hand Test.

    Lozano, Aude / Foisneau, Anne / Touillet, Amélie / Hossu, Gabriela / Athlani, Lionel

    The journal of hand surgery Asian-Pacific volume

    2023  Volume 28, Issue 2, Page(s) 266–272

    Abstract: Background: ...

    Abstract Background:
    MeSH term(s) Humans ; Young Adult ; Adult ; Middle Aged ; Aged ; Aged, 80 and over ; Tendon Injuries/diagnosis ; Tendon Injuries/surgery ; Finger Injuries/surgery ; Physical Therapy Modalities ; Postoperative Care ; Tendons
    Language English
    Publishing date 2023-04-29
    Publishing country Singapore
    Document type Journal Article
    ZDB-ID 2848651-1
    ISSN 2424-8363 ; 2424-8355
    ISSN (online) 2424-8363
    ISSN 2424-8355
    DOI 10.1142/S2424835523500303
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Olfactory cleft stenosis and obstruction on paranasal sinus CT scan in pre-septo-rhinoplasty patients: normal variants or pathologic findings?

    Imbs, Sara / Deyrail, Baptiste / Nguyen, Duc Trung / Hossu, Gabriela / Blum, Alain / Gondim Teixeira, Pedro Augusto / Rumeau, Cécile / Jankowski, Roger / Gillet, Romain

    European radiology

    2024  

    Abstract: Objective(s): To determine the frequency of olfactory cleft (OC) stenosis and obstruction on paranasal sinus CT scans in pre-septorhinoplasty of patients who had septal deviation, septopyramidal deformation or nasal obstruction without other sinonasal ... ...

    Abstract Objective(s): To determine the frequency of olfactory cleft (OC) stenosis and obstruction on paranasal sinus CT scans in pre-septorhinoplasty of patients who had septal deviation, septopyramidal deformation or nasal obstruction without other sinonasal conditions.
    Methods: This retrospective study included patients referred to our institution between December 2013 and December 2021 for septorhinoplasty due to nasal obstruction without other sinonasal or neurological conditions. All patients underwent preoperative paranasal sinus CT scan and olfactory testing. OC stenosis was quoted as none, partial, or total (less than 1/3 contact between nasal septum and ethmoid turbinates, 1/3-2/3, more than 2/3, respectively), as well as OC obstruction as none, partial, or complete (obstruction of less than 1/3 of OC, 1/3-2/3, more than 2/3, respectively). Radiologic evaluation was validated by near perfect interobserver agreement.
    Results: A total of 75 patients (32 women, 43 men) with a mean age of 44.2 ± 15.64 (23-74) years were included, of which 36 were normosmic and 39 hyposmic. OC stenosis was partial in 58.7% (n = 44) of the patients, absent in 28% (n = 21), and total in 13.3% (n = 10), without difference between normosmic and hyposmic patients (p = .66). OC obstruction was absent in 52% (n = 39) and partial in 46.7% (n = 35), without difference between normosmic and hyposmic patients (p = .51). Only one normosmic patient had complete OC obstruction.
    Conclusion: OC partial stenosis and partial obstruction were frequent findings in pre-septorhinoplasty patients without respiratory mucosa disease and did not influence their olfactory status. Total stenosis and complete obstruction were rarer and require further investigation.
    Clinical relevance statement: Isolated partial olfactory cleft stenosis and obstruction should be considered normal variants, whereas the impact of complete olfactory cleft stenosis and obstruction on patient's olfactory status remains to be determined.
    Key points: • The incidence of olfactory cleft stenosis and obstruction in asymptomatic patients remains unknown, even though it is encountered in clinical practice. • Partial and total olfactory cleft stenosis occurred in 58.7% and 13.3% of the patients; partial obstruction occurred in half of the cases, but complete obstruction was extremely rare. • There are frequent findings of partial olfactory cleft obstruction and stenosis, but complete obstruction and total stenosis should be further investigated.
    Language English
    Publishing date 2024-01-11
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1085366-2
    ISSN 1432-1084 ; 0938-7994 ; 1613-3749
    ISSN (online) 1432-1084
    ISSN 0938-7994 ; 1613-3749
    DOI 10.1007/s00330-023-10564-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Benefits of simulation for ultrasound-guided midline placement training: MC-in-Sim pilot study.

    Slosse, Côme / Roche, Anaïs / Hossu, Gabriela / Fantin, Luca / Amouyal, Noémie / Hani, Hind / Bouaziz, Hervé / Ambroise-Grandjean, Gaëlle

    The journal of vascular access

    2024  , Page(s) 11297298241239155

    Abstract: Introduction: Ultrasound-guided placement of Midlines catheters (MCs) is a standard procedure with many benefits for patients. Even if there are some guidelines worldwide, this invasive technique is still taught at the patient's bed and relies on ... ...

    Abstract Introduction: Ultrasound-guided placement of Midlines catheters (MCs) is a standard procedure with many benefits for patients. Even if there are some guidelines worldwide, this invasive technique is still taught at the patient's bed and relies on mentoring in many care centers. The performance of this care by novice practitioners raises ethical and quality of care issues mainly because of its risk of complications. This study aimed to propose and assess a simulation-based learning method for the placement of MCs in novice practitioners.
    Methods: A single-center prospective observational study was conducted with anesthesia residents who had no prior experience of Midline placement. Two workshops were planned. The first one consisted of a theoretical training and a simulated practical phase. The second workshop included an assessment of theoretical memorization, a practical exercise and adherence to the training program.
    Results: The median score of the theoretical memorization was 14.6 (interquartile range [IQR]: 13.5-15.8). The MCs placement time was significantly higher (Med: 12.23 min; IQR: 12.21-12.80) for novice practitioners who did not successfully complete solo MCs placement in simulation versus novice practitioners who successfully completed solo MCs placement in simulation 6.66 min (IQR: 5.92-8.93) (
    Conclusion: This ultrasound-guided MCs training on simulation is an agile and fast alternative to traditional bedside training for anesthesia novice practitioners.
    Language English
    Publishing date 2024-03-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2252820-9
    ISSN 1724-6032 ; 1129-7298
    ISSN (online) 1724-6032
    ISSN 1129-7298
    DOI 10.1177/11297298241239155
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Ultra-high-resolution CT of the temporal bone: The end of stapes prosthesis dimensional error and correlation with patient symptoms.

    Boukhzer, Sara / Eliezer, Michael / Boubaker, Fatma / Hossu, Gabriela / Blum, Alain / Teixeira, Pedro / Parietti-Winkler, Cécile / Gillet, Romain

    European journal of radiology

    2024  Volume 175, Page(s) 111467

    Abstract: Purpose: To describe the reliability of ultra-high-resolution computed tomography (UHR-CT) in the measurement of titanium stapes prostheses using manufacturer data as a reference.: Materials and methods: This retrospective study included patients ... ...

    Abstract Purpose: To describe the reliability of ultra-high-resolution computed tomography (UHR-CT) in the measurement of titanium stapes prostheses using manufacturer data as a reference.
    Materials and methods: This retrospective study included patients treated by stapedectomy with titanium prostheses who underwent UHR-CT between January 2020 and October 2023. Images were acquired using an ultra-high-resolution mode (slice thickness: 0.25 mm; matrix, 1024 × 1024). Two radiologists independently evaluated the length, diameter, and intra-vestibular protrusion of the prosthesis. Post-operative air-bone gaps (ABGs) were recorded.
    Results: Fourteen patients were enrolled (mean age, 44.3 ± 13.8 [SD] years, 9 females), resulting in 16 temporal bone UHR-CTs. The exact length was obtained in 81.3 % (n = 13/16) and underestimated by 0.1 to 0.3 mm in the remaining 18.7 % (n = 3/16) CT scans for both readers (mean misestimation: -0.02 ± 0.06 [SD] mm, overall underestimation of 0.43 %). The exact diameter was reported in 75 % (n = 12/16) and 87.5 % (n = 14/16) of the CT scans for readers 1 and 2, respectively, and was off by 0.1 mm in all discrepancies (mean misestimation: 0.01 ± 0.04 [SD] mm, overall overestimation of 2.43 %). Intravestibular prosthesis protrusion was of 0.5 ± 0.43 [SD] mm (range: 0-1) and 0.49 ± 0.44 [SD] mm (range: 0-1.1) for readers 1 and 2, respectively, and did not correlate with ABGs (r = 0.25 and 0.22; P = 0.39 and 0.47 for readers 1 and 2, respectively). Intra and interobserver agreements were excellent.
    Conclusion: UHR-CT provides 99.6 % and 97.6 % accuracy for prosthesis length and diameter measurements, respectively.
    Language English
    Publishing date 2024-04-13
    Publishing country Ireland
    Document type Journal Article
    ZDB-ID 138815-0
    ISSN 1872-7727 ; 0720-048X
    ISSN (online) 1872-7727
    ISSN 0720-048X
    DOI 10.1016/j.ejrad.2024.111467
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  7. Article ; Online: Measurement of stapes footplate thickness using ultra-high-resolution computed tomography: stapes axial plane correlates better with otosclerosis than lateral semicircular canal plane.

    Gillet, Romain / Eliezer, Michael / Hossu, Gabriela / Lombard, Charles / Boubaker, Fatma / Blum, Alain / Gondim Teixeira, Pedro Augusto / Parietti-Winkler, Cécile

    Acta oto-laryngologica

    2024  , Page(s) 1–7

    Abstract: Background, aims: Stapes footplate thickness measurement using ultra-high-resolution CT has been described only in the lateral semicircular canal plane. The purpose of this study was to compare stapes footplate thickness between the lateral semicircular ...

    Abstract Background, aims: Stapes footplate thickness measurement using ultra-high-resolution CT has been described only in the lateral semicircular canal plane. The purpose of this study was to compare stapes footplate thickness between the lateral semicircular canal and stapes axial planes in patients with otosclerosis compared to controls.
    Material and methods: We performed a retrospective single-center study of patients undergoing high-resolution temporal bone CT. Two radiologists measured stapes footplate thickness in both the lateral semicircular canal and stapes axial planes.
    Results: Between February 2020 and October 2022, we collected 81 ears from 49 patients (75% of women; mean age 51.22 ± 16.6 years, 17 otosclerosis, and 64 controls). In the stapes axial plane, there was a significant anterior thickening in otosclerosis patients (Reader 1: 0.52 ± 0.12 [0.3-0.7] vs. 0.41 ± 0.08 [0.3-0.6],
    Conclusion: The stapes footplate was thickened at its AC in otosclerosis patients using only the stapes axial plane.
    Significance: We propose to use the stapes axial plane instead of the lateral semicircular canal plane when analyzing the stapes.
    Language English
    Publishing date 2024-04-25
    Publishing country England
    Document type Journal Article
    ISSN 1651-2251
    ISSN (online) 1651-2251
    DOI 10.1080/00016489.2024.2340083
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Identification of resting-state networks using dynamic brain perfusion SPECT imaging: A fSPECT case report.

    Doyen, Matthieu / Hossu, Gabriela / Heyer, Sébastien / Zaragori, Timothée / Imbert, Laetitia / Verger, Antoine

    Frontiers in human neuroscience

    2023  Volume 17, Page(s) 1125765

    Abstract: Connectivity studies with nuclear medicine systems are scarce in literature. They mainly employ PET imaging and group level analyses due to the low temporal resolution of PET and especially SPECT imaging. Our current study analyses connectivity at an ... ...

    Abstract Connectivity studies with nuclear medicine systems are scarce in literature. They mainly employ PET imaging and group level analyses due to the low temporal resolution of PET and especially SPECT imaging. Our current study analyses connectivity at an individual level using dynamic SPECT imaging, which has been enabled by the improved temporal resolution performances provided by the 360°CZT cameras. We present the case of an 80-year-old man referred for brain perfusion SPECT imaging for cognitive disorders for whom a dynamic SPECT acquisition was performed utilizing a 360°CZT camera (temporal sampling of 15 frames × 3 s, 10 frames × 15 s, 14 frames × 30 s), followed by a conventional static acquisition of 15 m. Functional SPECT connectivity (fSPECT) was assessed through a seed correlation analysis and 5 well-known resting-state networks were identified: the executive, the default mode, the sensory motor, the salience, and the visual networks. This case report supports the feasibility of fSPECT imaging to identify well known resting-state networks, thanks to the novel properties of a 360°CZT camera, and opens the way to the development of more dedicated functional connectivity studies using brain perfusion SPECT imaging.
    Language English
    Publishing date 2023-04-20
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 2425477-0
    ISSN 1662-5161
    ISSN 1662-5161
    DOI 10.3389/fnhum.2023.1125765
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  9. Article ; Online: Artificial intelligence and fetal ultrasound biometry: Challenges and perspectives.

    Ambroise Grandjean, Gaelle / Oster, Julien / Dap, Matthieu / Morel, Olivier / Hossu, Gabriela

    Diagnostic and interventional imaging

    2023  Volume 104, Issue 4, Page(s) 200–201

    MeSH term(s) Pregnancy ; Female ; Humans ; Artificial Intelligence ; Ultrasonography, Prenatal ; Gestational Age ; Biometry
    Language English
    Publishing date 2023-02-15
    Publishing country France
    Document type Letter
    ZDB-ID 2648283-6
    ISSN 2211-5684 ; 2211-5684
    ISSN (online) 2211-5684
    ISSN 2211-5684
    DOI 10.1016/j.diii.2023.01.008
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  10. Article ; Online: Effects of Gender and Age on Self-reported Odor Imagery Ability

    Fantin, Luca / Pinzano, Chloé / Rumeau, Cécile / Hossu, Gabriela / Ceyte, Hadrien

    Chem. Percept.. 2022 Oct., v. 15, no. 2 p.145-153

    2022  

    Abstract: INTRODUCTION: Odor imagery is known to be more difficult than any other modality of sensory imagery. Consequently, wide between-individuals variability can be found in odor imagery ability. Several studies have shown a positive relationship between ... ...

    Abstract INTRODUCTION: Odor imagery is known to be more difficult than any other modality of sensory imagery. Consequently, wide between-individuals variability can be found in odor imagery ability. Several studies have shown a positive relationship between olfactory performance and odor imagery ability. In the light of factors known to influence smelling ability, this study therefore investigated the effects of two factors — gender and age — known to influence smelling ability, on self-declared odor imagery ability in normosmic individuals. METHODS: Seven hundred and nine French participants were asked to complete the web version of the French Vividness of Olfactory Imagery Questionnaire (fVOIQ). General linear models were used to determine the contributions of gender and age to odor imagery vividness scores. Moreover, scores were compared between age intervals ranging from 18–30 years old to 60 + years old. RESULTS: Our findings reveal that at any age, men and women have the same odor imagery ability. Odor imagery ability in self-declared normosmic individuals improves with age until 50–60 years old, and beyond this point the often-reported age-related olfactory decay does not alter it. CONCLUSIONS: These findings suggest a high contribution of daily olfactory experience to the development of this cognitive function, and a relationship with olfactory performance that appears less linear than hypothesized. IMPLICATIONS: This study provides food for thought in the field of olfaction: it suggests that distinct mechanisms may underlie two cognitive processes, perception and sensory imagery.
    Keywords cognition ; gender ; odors ; questionnaires ; smell
    Language English
    Dates of publication 2022-10
    Size p. 145-153.
    Publishing place Springer US
    Document type Article ; Online
    ZDB-ID 2424048-5
    ISSN 1936-5810 ; 1936-5802
    ISSN (online) 1936-5810
    ISSN 1936-5802
    DOI 10.1007/s12078-022-09302-0
    Database NAL-Catalogue (AGRICOLA)

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