Analysis of ECLSS performance during reentry after loss of one ammonia tank

An analysis was performed to determine whether, in case of a loss of one of the ammonia tanks, the Ammonia Boiler System can provide adequate heat rejection for the orbiter ECLSS during reentry. Results indicate that temperatures can be maintained as long as NH3 is available, but that one tank does not contain sufficient NH3 to complete all missions. A recommendation is made to investigate incorporation of onboard NH3 quantity calculations, and/or addition of a third NH3 tank

EPA/ECLSS consumables analyses for the Spacelab 1 flight

The results of electrical power system (EPS) and environmental control/life support system (ECLSS) consumables analyses of the Spacelab 1 mission are presented. The analyses were performed to assess the capability of the orbiter systems to support the proposed mission and to establish the various non propulsive consumables requirements. The EPS analysis was performed using the shuttle electrical power system (SEPS) analysis computer program. The ECLSS analysis was performed using the shuttle environmental consumables requirements evaluation tool (SECRET) program

ECLSS consumables analysis: ALT captive/active 1 and captive/active 3

A consumables analysis of the environmental control and life support system (ECLSS) was performed for approach and landing test (ALT) captive/active missions 1 through 3 and is also applicable to missions 4 and 5. The ECLSS configuration analyzed and the guidelines and assumptions used in performing the analysis are presented. A projection of ammonia temperatures and pressures during the captive/active 1 mission is also included. The resulting consumables, budgets are presented in tabular and graphic form. Adequate margins were obtained for all systems

Storage, access, and retrieval of endoscopic and laparoscopic video

The system presented here enhances documentation and data- secured, second-opinion facilities by integrating video into DICOM3.0. Digital stereoscopic video sequences (DSVS) are especially in demand for surgery (laparoscopy, microsurgery, surgical microscopy, second opinion, virtual reality). Therefore DSVS are also integrated into the DICOM video concept. We present an implementation for a medical video server extended by a DICOM interface. Security mechanisms conforming with DICOM are integrated to enable secure internet access. Digital (stereoscopic) video sequences relevant for surgery should be examined regarding the clip length necessary for diagnosis and documentation and the clip size manageable with today's hardware. Methods for DSVS compression are described, implemented, and tested. Image sources relevant for this paper include, among others, a stereoscopic laparoscope and a monoscopic endoscope. Additionally, an approach is presented to analyze the motion of the endoscopic camera for future automatic video- cutting

Standardized access, display, and retrieval of medical video

The system presented here enhances documentation and data- secured, second-opinion facilities by integrating video sequences into DICOM 3.0. We present an implementation for a medical video server extended by a DICOM interface. Security mechanisms conforming with DICOM are integrated to enable secure internet access. Digital video documents of diagnostic and therapeutic procedures should be examined regarding the clip length and size necessary for second opinion and manageable with today's hardware. Image sources relevant for this paper include 3D laparoscope, 3D surgical microscope, 3D open surgery camera, synthetic video, and monoscopic endoscopes, etc. The global DICOM video concept and three special workplaces of distinct applications are described. Additionally, an approach is presented to analyze the motion of the endoscopic camera for future automatic video-cutting. Digital stereoscopic video sequences are especially in demand for surgery . Therefore DSVS are also integrated into the DICOM video concept. Results are presented describing the suitability of stereoscopic display techniques for the operating room

A PC-Based Voice-Controlled Front-End of an Endoscopic Video Server in DICOM

Abstract. Results of a video-server implementation for endoscopic investigations are presented. A PC-based workplace for video-capturing equipped with a speech-controlled interface for the surgeon is described. The clip size of the video to be stored is determined by clip length, image resolution, frame rate, and compression scheme. Captured clips are converted into DICOM 3.0 and integrated into a digital patient record. Additionally, an approach is presented to analyze the motion of the endoscopic camera for future automatic videocutting. This approach analyzes compressed MPEG-2 video sequences to detect scenes of diagnostic interest

OP 2000 and MedSeC A Concept to Extend the DICOM Standard to Include Digital Stereoscopic Video Sequences

Abstract. We present a concept for a medical video server extended by a DICOM interface. DICOM conform security mechanisms will be integrated to enable secure Internet access. Especially digital stereoscopic video sequences (DSVS) that are relevant for surgery should be examined regarding clip length necessary for diagnosis and documentation and clip size manageable with today’s hardware. Methods for DSVS compression are described, implemented and tested. DSVS are provided by a stereoscopic surgery microscope and a stereo video camera

A PC-Based Voice-Controlled Front-End of an Endoscopic Video Server in DICOM

Abstract. Results of a video-server implementation for endoscopic investigations are presented. A PC-based workplace for video-capturing equipped with a speech-controlled interface for the surgeon is described. The clip size of the video to be stored is determined by clip length, image resolution, frame rate, and compression scheme. Captured clips are converted into DICOM 3.0 and integrated into a digital patient record. Additionally, an approach is presented to analyze the motion of the endoscopic camera for future automatic video-cutting. This approach analyzes compressed MPEG-2 video sequences to detect scenes of diagnostic interest