It is still challenging to detect endolymphatic hydrops (EH) in patients with Meniere's disease (MD) using MRI. The aim of the present study was to optimize a sensitive technique generating strong contrast enhancement from minimum gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) while reliably detecting EH in the inner ear, including the apex.
All imaging was performed using a3.0T MR system 24h after intratympanic injection of low-dose Gd-DTPA. Heavily T2-weighted 3-dimensional fluid-attenuated inversion recovery reconstructed with magnitude and zero-filled interpolation (hT
W-FLAIR-ZFI) was optimized and validated in phantom studies and compared with medium inversion time inversion recovery imaging with magnitude reconstruction (MIIRMR). The following parameters were used in hT
W-FLAIR-ZFI repetition time 14,000ms, echo time 663ms, inversion time 2900ms, flip angle 120°, echo train length 271, and field of view 166 × 196mm
.
MRI obtained using hT
W-FLAIR-MZFI yielded high-quality images with sharper and smoother borders between the endolymph and perilymph and a higher signal intensity ratio and more homogenous perilymph enhancement than those generated with MIIRMR (p < 0.01). There were predominantly grade II EHs in the cochleae and grade III EHs in the vestibule in definite MD. EH was detected in the apex of 11/16 ipsilateral ears, 3/16 contralateral ears in unilateral definite MD and 3/6 ears in bilateral MD.
The novel hT
W-FLAIR-MZFI technique is sensitive and demonstrates strong and homogenous enhancement by minimum Gd-DTPA in the inner ear, including the apex, and yields high-quality images with sharp borders between the endolymph and perilymph.
The novel hT2W-FLAIR-MZFI technique is sensitive and demonstrates strong and homogenous enhancement by minimum Gd-DTPA in the inner ear, including the apex, and yields high-quality images with sharp borders between the endolymph and perilymph.
To investigate the association of oral health condition with the occurrence of medication-related osteonecrosis of the jaw (MRONJ) in a cancer population.
A multicenter cross-sectional study was conducted with cancer patients exposed to bisphosphonates for at least 7months. Dental and periodontal conditions were assessed by epidemiological indices.
The sample consisted of 80 patients under bisphosphonate therapy, nine of which were allocated to group 1 (with MRONJ) and 71 to group 2 (without MRONJ). Osteonecrosis cases presented 19 decayed, missing, and filled teeth on average. Moderate gingival inflammation was noted in both groups and together with severe inflammation exceeded 50% of the groups. The presence of dental calculus was detected in about half of the individuals in both groups. Shallow periodontal pockets were detected in about 25% of both groups. Deep periodontal pockets were more prevalent among patients with osteonecrosis. Regular oral hygiene was detected in approximately 25% of individuals in both groups. https://www.selleckchem.com/products/pfk158.html There was a strong positive correlation between the clinical staging of osteonecrosis and decayed, missing, and filled teeth index (DMFTI).
Patients had a poor oral health condition. All but one osteonecrosis case had no previous history of tooth extraction; oral infections seemed to play a major role in the development of bone necrosis. Advanced osteonecrosis stages were associated with a higher DMFTI.
Patients had a poor oral health condition. All but one osteonecrosis case had no previous history of tooth extraction; oral infections seemed to play a major role in the development of bone necrosis. Advanced osteonecrosis stages were associated with a higher DMFTI.Forty years ago, researchers documented changes in vascular and muscular activity within the anal canal of women and men who engaged in sexual self-stimulation. Vascular changes were assessed using a photoplethysmograph that aimed to detect changes in pelvic vasocongestion. An important advantage of detecting sexual response within the anal canal is that the device, its anatomical placement, and the data output are identical for women and men, therefore facilitating gender comparisons of response patterns. In this study, the vaginal photoplethysmograph (VPP), the most common measure of genital response in women, was administered intra-anally as an anal photoplethysmograph (APG) to examine its validity and sensitivity as an indicator of sexual response. The final sample comprised 20 women and 20 men who were exposed to 12, 90-s sexual and nonsexual film clips while their APG responses were recorded. Participants also rated their sexual arousal and affective responses to the stimuli. There was evidence that APG responses were specific to sexual stimuli and were sensitive to erotic intensity in women. The degree of discrimination between sexual and nonsexual stimuli was lower in men. Unlike most sexual psychophysiological studies, the positive correlation between physiological and self-reported sexual arousal was stronger in women than in men. There was a relatively high number of data artifacts and the waveform morphology was uncharacteristic of that typically observed with VPP. The potential role of anal musculature interference on the APG signal is discussed, as well as avenues for future research.
To assess the performance change and physiological adaptations following nine sessions of short high-intensity interval training (HIIT) or sprint-interval training (SIT) in sprint kayakers.
Twelve trained kayakers performed an incremental test and 3 time trials (200m, 500m and 1000m) on a kayak ergometer. Oxygen consumption (V̇O
) and muscle oxygenation of the latissimus dorsi, biceps brachii, and vastus lateralis were measured. Athletes were then paired for sex and V̇O
max and randomized into a HIIT or a SIT training group, and performed nine training sessions before repeating the tests.
Training improved performance in HIIT (200m + 3.8 ± 3.1%, p = 0.06; 500m + 2.1 ± 4.1%, p = 0.056; 1000m + 3.0 ± 4.6%, p = 0.13) but changes in performance remained within the smallest worthwhile change in SIT (200m + 0.8 ± 4.1%, p = 0.59; 500m + 0.5 ± 4.1%, p = 0.87; 1000m + 1.3 ± 4.6%, p = 0.57). In the 1000m, training led to a greater deoxygenation in the biceps brachii and vastus lateralis in HIIT, and in the latissimus dorsi in SIT.
It is still challenging to detect endolymphatic hydrops (EH) in patients with Meniere's disease (MD) using MRI. The aim of the present study was to optimize a sensitive technique generating strong contrast enhancement from minimum gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA) while reliably detecting EH in the inner ear, including the apex.
All imaging was performed using a3.0T MR system 24h after intratympanic injection of low-dose Gd-DTPA. Heavily T2-weighted 3-dimensional fluid-attenuated inversion recovery reconstructed with magnitude and zero-filled interpolation (hT
W-FLAIR-ZFI) was optimized and validated in phantom studies and compared with medium inversion time inversion recovery imaging with magnitude reconstruction (MIIRMR). The following parameters were used in hT
W-FLAIR-ZFI repetition time 14,000ms, echo time 663ms, inversion time 2900ms, flip angle 120°, echo train length 271, and field of view 166 × 196mm
.
MRI obtained using hT
W-FLAIR-MZFI yielded high-quality images with sharper and smoother borders between the endolymph and perilymph and a higher signal intensity ratio and more homogenous perilymph enhancement than those generated with MIIRMR (p < 0.01). There were predominantly grade II EHs in the cochleae and grade III EHs in the vestibule in definite MD. EH was detected in the apex of 11/16 ipsilateral ears, 3/16 contralateral ears in unilateral definite MD and 3/6 ears in bilateral MD.
The novel hT
W-FLAIR-MZFI technique is sensitive and demonstrates strong and homogenous enhancement by minimum Gd-DTPA in the inner ear, including the apex, and yields high-quality images with sharp borders between the endolymph and perilymph.
The novel hT2W-FLAIR-MZFI technique is sensitive and demonstrates strong and homogenous enhancement by minimum Gd-DTPA in the inner ear, including the apex, and yields high-quality images with sharp borders between the endolymph and perilymph.
To investigate the association of oral health condition with the occurrence of medication-related osteonecrosis of the jaw (MRONJ) in a cancer population.
A multicenter cross-sectional study was conducted with cancer patients exposed to bisphosphonates for at least 7months. Dental and periodontal conditions were assessed by epidemiological indices.
The sample consisted of 80 patients under bisphosphonate therapy, nine of which were allocated to group 1 (with MRONJ) and 71 to group 2 (without MRONJ). Osteonecrosis cases presented 19 decayed, missing, and filled teeth on average. Moderate gingival inflammation was noted in both groups and together with severe inflammation exceeded 50% of the groups. The presence of dental calculus was detected in about half of the individuals in both groups. Shallow periodontal pockets were detected in about 25% of both groups. Deep periodontal pockets were more prevalent among patients with osteonecrosis. Regular oral hygiene was detected in approximately 25% of individuals in both groups. https://www.selleckchem.com/products/pfk158.html There was a strong positive correlation between the clinical staging of osteonecrosis and decayed, missing, and filled teeth index (DMFTI).
Patients had a poor oral health condition. All but one osteonecrosis case had no previous history of tooth extraction; oral infections seemed to play a major role in the development of bone necrosis. Advanced osteonecrosis stages were associated with a higher DMFTI.
Patients had a poor oral health condition. All but one osteonecrosis case had no previous history of tooth extraction; oral infections seemed to play a major role in the development of bone necrosis. Advanced osteonecrosis stages were associated with a higher DMFTI.Forty years ago, researchers documented changes in vascular and muscular activity within the anal canal of women and men who engaged in sexual self-stimulation. Vascular changes were assessed using a photoplethysmograph that aimed to detect changes in pelvic vasocongestion. An important advantage of detecting sexual response within the anal canal is that the device, its anatomical placement, and the data output are identical for women and men, therefore facilitating gender comparisons of response patterns. In this study, the vaginal photoplethysmograph (VPP), the most common measure of genital response in women, was administered intra-anally as an anal photoplethysmograph (APG) to examine its validity and sensitivity as an indicator of sexual response. The final sample comprised 20 women and 20 men who were exposed to 12, 90-s sexual and nonsexual film clips while their APG responses were recorded. Participants also rated their sexual arousal and affective responses to the stimuli. There was evidence that APG responses were specific to sexual stimuli and were sensitive to erotic intensity in women. The degree of discrimination between sexual and nonsexual stimuli was lower in men. Unlike most sexual psychophysiological studies, the positive correlation between physiological and self-reported sexual arousal was stronger in women than in men. There was a relatively high number of data artifacts and the waveform morphology was uncharacteristic of that typically observed with VPP. The potential role of anal musculature interference on the APG signal is discussed, as well as avenues for future research.
To assess the performance change and physiological adaptations following nine sessions of short high-intensity interval training (HIIT) or sprint-interval training (SIT) in sprint kayakers.
Twelve trained kayakers performed an incremental test and 3 time trials (200m, 500m and 1000m) on a kayak ergometer. Oxygen consumption (V̇O
) and muscle oxygenation of the latissimus dorsi, biceps brachii, and vastus lateralis were measured. Athletes were then paired for sex and V̇O
max and randomized into a HIIT or a SIT training group, and performed nine training sessions before repeating the tests.
Training improved performance in HIIT (200m + 3.8 ± 3.1%, p = 0.06; 500m + 2.1 ± 4.1%, p = 0.056; 1000m + 3.0 ± 4.6%, p = 0.13) but changes in performance remained within the smallest worthwhile change in SIT (200m + 0.8 ± 4.1%, p = 0.59; 500m + 0.5 ± 4.1%, p = 0.87; 1000m + 1.3 ± 4.6%, p = 0.57). In the 1000m, training led to a greater deoxygenation in the biceps brachii and vastus lateralis in HIIT, and in the latissimus dorsi in SIT.
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