Background
We have started clinical application of 8K ultra-high definition (UHD; 7680 × 4320 pixels) imaging technology, which is a 16-fold higher resolution than the current 2K high-definition (HD; ...1920 × 1080 pixels) technology, to an endoscope for advanced laparoscopic surgery.
Results
Based on preliminary testing experience and with subsequent technical and system improvements, we then proceeded to perform two cases of cholecystectomy and were able to achieve clinical success with an 8K UHD endoscopic system, which consisted of an 8K camera, a 30-degrees angled rigid endoscope with a lens adapter, a pair of 300-W xenon light sources, an 85-inch 8K LCD and an 8K video recorder. These experimental and clinical studies revealed the engineering and clinical feasibility of the 8K UHD endoscope, enabling us to have a positive outlook on its prospective use in clinical practice.
Conclusions
The 8K UHD endoscopy promises to open up new possibilities for intricate procedures including anastomoses of thin nerves and blood vessels as well as more confident surgical resections of a diversity of cancer tissues. 8K endoscopic imaging, compared to imaging by the current 2K imaging technology, is very likely to lead to major changes in the future of medical practice.
We have developed a new compact lightweight 8K ultra-high-definition (UHD; 7,680×4,320 pixels) camera and started medical application with an ophthalmic surgical microscope which is interchangeable ...with the conventional high-definition (1,920×1,080 pixels)/4K UHD (3,840×2,160 pixels) microscopic camera.
We did a feasibility study to apply our 8K UHD microscope in cataract surgery, glaucoma surgery and vitreous surgery using pig cadaver eyes. The 8K UHD microscope comprises a surgical microscope, a camera adaptor with relay lenses, an 8K UHD camera and an 8K UHD LCD to share the 8K UHD images with all surgical staff in real time.
In ophthalmic surgeries, higher resolution images than conventional microscopic cameras were obtained with 8K UHD LCD equivalent to the observation through the microscopic eye pieces.
Based on the results of this feasibility study, clinical trials on human ophthalmic surgery using the new 8K UHD microscopic camera should be conducted in the near future.
Background
Surgical navigation technology directed at fetoscopic procedures is relatively underdeveloped compared with other forms of endoscopy. The narrow fetoscopic field of views and the vast ...vascular network on the placenta make examination and photocoagulation treatment of twin-to-twin transfusion syndrome challenging. Though ultrasonography is used for intraoperative guidance, its navigational ability is not fully exploited. This work aims to integrate 3D ultrasound imaging and endoscopic vision seamlessly for placental vasculature mapping through a self-contained framework without external navigational devices.
Methods
This is achieved through development, integration, and experimentation of novel navigational modules. Firstly, a framework design that addresses the current limitations based on identified gaps is conceptualized. Secondly, integration of navigational modules including (1) ultrasound-based localization, (2) image alignment, and (3) vision-based tracking to update the scene texture map is implemented. This updated texture map is projected to an ultrasound-constructed 3D model for photorealistic texturing of the 3D scene creating a panoramic view of the moving fetoscope. In addition, a collaborative scheme for the integration of the modular workflow system is proposed to schedule updates in a systematic fashion. Finally, experiments are carried out to evaluate each modular variation and an integrated collaborative scheme of the framework.
Results
The modules and the collaborative scheme are evaluated through a series of phantom experiments with controlled trajectories for repeatability. The collaborative framework demonstrated the best accuracy (5.2 % RMS error) compared with all the three single-module variations during the experiment. Validation on an ex vivo monkey placenta shows visual continuity of the freehand fetoscopic panorama.
Conclusions
The proposed developed collaborative framework and the evaluation study of the framework variations provide analytical insights for effective integration of ultrasonography and endoscopy. This contributes to the development of navigation techniques in fetoscopic procedures and can potentially be extended to other applications in intraoperative imaging.
Various endoscopic devices have been developed for advanced minimally invasive surgery. We recently applied a new 8K ultra-high-definition television system during laparoscopic treatment of ...endometriosis. The procedure, which is described in detail, stands as the first reported application of an 8K ultra-high-definition system for laparoscopic gynecologic surgery. Comparison is made between depiction of the lesion by the new system and depiction by a full high-definition system. Improved diagnostic accuracy resulted from the increased image resolution, and we believe that this and other advantages will lead to widespread acceptance and further application of 8K ultra-high-definition systems in the field of gynecologic surgery.
to perform the psychometric validation of the Brazilian version of the Patient Dignity Inventory (PDI - Br) in patients with advanced diseases in palliative care.
a methodological study to verify the ...psychometric properties of the Patient Dignity Inventory (PDI - Br) instrument, through validity and reliability tests.
the exploratory factor analysis showed a factorial solution with three factors, responsible for 40.9% of the explained variance, with adequate internal consistency for the Presence of Symptoms (α=0.859), Dependence (α=0.871), and Existential Suffering (α=0.759) domains. The test-retest was performed and indicated moderate to strong correlations. Convergent validity demonstrated a positive correlation between the Presence of Symptoms and the sadness (r=0.443) and anxiety (r=0.464) variables. Weak negative correlations were observed between the PDI - Br domains and functionality, spiritual well-being and quality of life.
composed of three domains and 25 items, the PDI - Br instrument presented satisfactory psychometric properties for its use in our environment, through the evidence of validity and reliability.
ABSTRACT Objective: To compare the relief of symptoms provided by palliative care consultation team (PCCT) compared to the traditional care team (TC), in patients with advanced cancer in the first 48 ...hours of hospitalization. Method: Allocated to PCCT Group and TC Group, this study assessed 290 patients according to the Edmonton Symptom Assessment System (ESAS) within the first 48 hours of hospitalization. The main outcome was a minimum 2-point reduction in symptom intensity. Results: At 48 hours, the PCCT Group had a 2-point reduction in the mean differences (p <0.001) in pain, nausea, dyspnea, and depression; and TC Group, on nausea and sleep impairment (p <0.001). Multiple Logistic Regression found for the PCCT Group a greater chance of pain relief (OR 2.34; CI 1.01-5.43; p = 0.049). Conclusion: There was superiority of the PCCT Group for pain relief, dyspnea and depression. There is a need for more studies that broaden the understanding of team modalities.
RESUMEN Objetivo: Comparar el alivio de síntomas obtenido por equipo interconsultor en cuidados paliativos (ICP) al obtenido por equipo de cuidado tradicional (CT), en enfermos con cáncer avanzado en las primeras 48 horas de hospitalización. Método: Alocados en los Equipos ICP y Equipo CT, 290 pacientes han sido evaluados por la Escala de Síntomas de Edmonton (ESAS) en las primeras 48 horas de la hospitalización. El desenlace principal ha sido la reducción mínima de 2 puntos en la intensidad de síntomas. Resultados: En 48 horas, el Equipo ICP tuvo reducción de 2 puntos en las medias de las diferencias (p < 0,001) del dolor, náusea, disnea y depresión; y el Equipo CT, en la náusea y perjuicio del sueño (p < 0,001). Regresión Logística Múltiple mostró para el Equipo ICP mayor oportunidad de alivio del dolor (RC 2,34; CI 1,01-5,43; p = 0,049). Conclusión: Hubo superioridad del Equipo ICP para alivio del dolor, disnea y depresión. Estudios que amplíen la comprensión acerca de las modalidades de equipo son necesarios.
RESUMO Objetivo: Comparar o alívio de sintomas obtido por equipe interconsultora em cuidados paliativos (ICP) ao obtido por equipe de cuidado tradicional (CT), em doentes com câncer avançado nas primeiras 48 horas de hospitalização. Método: Alocados nos Grupos ICP e Grupo CT, 290 pacientes foram avaliados pela Escala de Sintomas de Edmonton (ESAS) nas primeiras 48 horas da hospitalização. O desfecho principal foi a redução mínima de 2 pontos na intensidade de sintomas. Resultados: Em 48 horas, o Grupo ICP teve redução de 2 pontos nas médias das diferenças (p < 0,001) da dor, náusea, dispneia e depressão; e o Grupo CT, na náusea e prejuízo do sono (p < 0,001). Regressão Logística Múltipla mostrou para o Grupo ICP maior chance de alívio da dor (RC 2,34; CI 1,01-5,43; p = 0,049). Conclusão: Houve superioridade do Grupo ICP para alívio da dor, dispneia e depressão. Estudos que ampliem a compreensão sobre modalidades de equipe são necessários.
This study presents a tracker-less image-mapping framework for surgical navigation motivated by the clinical need for intuitive visual guidance during minimally invasive fetoscopic surgery.
A ...navigation framework mapping 2D endoscopic vision to a 3D ultrasound image model is proposed. This maps an endoscopic image onto a 3D placenta model through a one-time ultrasound image-based localization method followed by a series of concurrent image alignments and texture mapping of the untracked endoscopic video stream.
The mean absolute error of our ultrasound image-based localization method was (1.63 mm, 0.93°). The simulation analysis reveals an upper bound mapping performance with a mean error of 1.53 mm. In a phantom experiment, the overall mapping performance is close to this accuracy and achieves a mean absolute error of 2 mm, thereby supporting the feasibility of this method.
This novel integration of intraoperative visual guidance has potential contributions to innovative fusions of image guidance techniques for effective navigation in minimally invasive fetoscopic surgery.
In May 2008, the Japanese government launched the 'Emergency Project for Improvement of Medical Care and Quality of Life for People with Dementia' under the idea that it is necessary to build a ...society, without delay, where people can live life safely without anxiety even after being affected by dementia, where they can be supported by appropriate and integrated services of medical care, long-term care and community care. We would like to introduce our future dementia policy standing on the outcome of this project, which was published as a report on 10 July 2008. The measures for people with dementia in Japan have gradually achieved good results. For example, public understanding and awareness of dementia has increased through renaming the term for dementia in Japanese from 'Chiho' to 'Ninchi-sho' in 2004, and the comprehensive care system was founded focusing on the importance of providing community based long-term care while maintaining the person's familiar human relationships and residential circumstances. However, case reports show that there are yet some cases that fail to deliver appropriate treatment or long-term care service as a result of a lack of timely definite diagnosis in an early stage or a lack of coordination between medical care and long-term care. Therefore, the future dementia policy should be designed by envisaging the flow of the measures that would support the life of the person and his/her family, and improve their quality of life; starting with measures that link early notice of the patient, his/her family or neighbor to early diagnosis, and then measures to develop well-designed comprehensive care planning that provides appropriate medical and long-term care services through good coordination, while promoting research and development of diagnosis/treatment technology. In addition, in regard to early-onset dementia, comprehensive self-support measures including employment assistance should be promoted.
Abstract Twin–twin transfusion syndrome (TTTS) is a condition in which twins share blood disproportionately by the communicating vessels in the shared placenta, resulting in high fetal and perinatal ...mortality. Fetoscopic laser photocoagulation is performed to interrupt these communicating vessels; however, small vessels are often missed due to the poor image obtained with a fetoscope. We have developed a fluorescence endoscope capable of visualizing very small vessels, even in amniotic fluid, and we investigated its feasibility for in vivo visualization of placental vessels. Indocyanine green (ICG) was given at single doses of 0.5, 1.0, and 1.5 mg/kg, respectively, into the maternal circulation of pregnant rabbits, and the endoscope was used to identify the placental vessels. The vessels were detected within 15 s after ICG injection for about 10 min. The brightness difference between the intervillous space and the umbilical vessels was significantly smaller after administration of 0.5 mg/kg than after 1.0 mg/kg ( p = 0.02) or 1.5 mg/kg ( p = 0.01). Even very small vessels (0.2 mm in diameter) were detected. In conclusion, our new endoscope successfully provided a detailed view of the placental vessels in vivo . The results are promising for future TTTS laser surgery.
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