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["GT/GDH/061/2023:THE SUPPLY, DELIVERY, INSTALLATION, COMMISSIONING AND MAINTENANCE OF  LOW DOSE X-RAY MACHINE TO GAUTENG HEALTH INSTITUTIONS                  ANNEXURE A1"]
[]
["The scoring of the bids:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   1) Weights:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  Each specification will have a weight of 1, or a hash (#), which indicates the level of importance, as follows:                                                                                                                                                                                                                                                                                                                                                                                                                                    A specification (line item) with a weight of 1 is a specification with a standard level of importance that should be complied with.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   A specification (line item) with a # weight is a specification with  a mandatory level of importance, where the bid offer will be disqualified if the specification is not complied with. \n2) Scores: \nThe column for the score is not included in the tender specification. However, it shall be included in the scoring sheets during the evaluation of the bids by the Bid Evaluation Committee. Each specification (line item) shall have a score of 0 or 1, which indicates the level of compliance, as follows:\n0 -   The specification does not comply.\n1 -   The specification is fully compliant.\n3) Weighted Score:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          The score of 0 or 1 of each of the specifications (line items) will be multiplied with the weight of 1. \n4) Total Score: \nThe weighted score of each of the specifications (line items) will be added up to obtain the total score. The total score for below is 60 points. \nThe bidder must comply as follows with the specification:                                                                                                                                                                                                                                              i.The bidder must comply with all specifications ( line items) with a  # weight                                                                                                                                                                                                                    ii.The bidder must obtain a minimum score of 51 or higher out of 60 points in respect of specifications (line with a weight of 1                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    "]
["Item","Specifications ",null,"Weight","Comply (Yes/No)","Details of Bid Offer                                            (Provide your answers in this Colum. You are advised to be straight to the point)","Reference to Brochure / Technical Data Sheet and provide page numbers for verification"]
[null,"A – Modality Details"]
[1,"FUNCTIONALITY"]
["1.1","The system must be a Linear X-Ray Scanning Device: Full-body, high-speed digital radiology with low emission and scatter radiation",null,"#"]
["1.2","A complete full body antero‐postero (AP) study must be completed within 13 - 15 seconds (from initiation of scan to presentation of the full image on the Operator Console screen)",null,"#"]
["1.3","A whole patient/body scan shall be possible on the system through a single scan. This shall be performed in one operation, and no sequencing where different images need to be “stitched” together will be acceptable",null,"#"]
["1.4"," The pixel size of the system will not be more than 60μm ",null,1]
["1.5","The unit must be capable of doing a full body AP and a full spine lateral scan within 28 seconds",null,"#"]
["1.6"," The system should be able to generate 145kVp at 200mA for a 16 second scan",null,1]
["1.7","The system should be able to generate 400mA at 90kVp for a 10 second scan",null,1]
["1.8"," The system should be able to produce 4000mAs",null,1]
["1.9","The system must be able to produce X‐rays for a scan of 16 seconds",null,"#"]
["1.10"," The system should be able to conduct an AP scan of a full body up to 670mm*1800mm (+‐5%)",null,1]
["1.11","The system should be able to be flexible and be able to conduct detailed scans from 100mm x 100mm (+‐5%) up to 670mm x 1800mm(+‐5%)",null,1]
["1.12","The system must be able to conduct oblique X‐ray examinations to include views from 0⁰ to 90⁰ angles",null,"#"]
["1.13","The system should be able to flexibly operate at various resolution modes, from 1 x 1 pixel binning to 8 x 8 pixel binning",null,1]
["1.14","The system must be shown to have minimum contrast resolution of 4.2 lp/mm for very high resolution X‐ray exams",null,"#"]
["1.15","The system should be able to operate at different scan speeds,  nominally 35mm/s, 70mm/s, and 140mm/s (± 5%)",null,1]
["1.16","The Beam width (defined as the full width half maximum) should be demonstrated to be 1.4 – 2.8mm (+‐ 5%) at 1000mm from the focal spot",null,1]
["1.17","The system must be capable of completing a full field AP scan in 13 seconds. This is defined as the time from start of X‐rays at the beginning of the scan to the time X‐rays are stopped at the end of scan.",null,"#"]
["1.18","The diagnostic image must be available for viewing 15 seconds after the end of a full field scan.",null,"#"]
["1.19"," The system must be capable of performing two successive full field scans on the same patient in 30 seconds.",null,"#"]
["1.20","The system shall be capable of a high patient/body throughput. As a guideline the system should be capable of performing full‐body AP scans on medium sized patients/bodies at a rate of at least one per 15 seconds.",null,1]
["1.21","The system trolley must be capable of accomplishing Caudal‐cranial / Crano‐caudal (Trendellenburg/reverse Trendellenburg) angles at 10 degrees",null,"#"]
["1.22","It shall be possible to have the unit located near or inside an emergency, resuscitation room, or forensic pathology facility.",null,1]
[2,"SOFTWARE FUNCTIONS"]
["2.1","The system must contain an easy to use graphical User Interface",null,"#"]
["2.2","The basic user functions must be easily accessible.",null,"#"]
["2.3"," Selection of X‐ray exams and procedures should be easily achieved with the selection of pictograms.",null,1]
["2.4","The system must come preconfigured with a host of default predefined X‐ray exams and with default X‐ray parameters",null,"#"]
["2.5"," The system must allow these predefined parameters to be modified and saved. ",null,"#"]
["2.6","The system must present a confirming image to the radiographer so they can verify that they have acquired the correct X‐ray image and correct body area.",null,"#"]
["2.7","The system must be able to scan a patient without the patient being registered on the system, and must assign a unique ID to this patient so that the patient information can be entered in later.",null,"#"]
["2.8","The system must contain a database which hold patient and image information, so that returning patients’ information and images can be easily retrieved. ",null,"#"]
["2.9","The system must come packaged with a Diagnostic image viewing software system so that images may be viewed at the machine or remotely at a dedicated viewing station",null,"#"]
["2.10","The system must be able to recall images easily and quickly, and contain the ability to page through the images or browse through the images quickly.",null,"#"]
["2.11","Image navigation should easy to do with image being able to be recalled by Previous, Next, Latest, Patient name, Hospital number, etc.",null,1]
["2.12"," Real time “Mouse wheel” zoom, pan, rotate, and aspect adjustment must be standard features of the image viewing system.",null,"#"]
["2.13","Windowing and leveling of grey scales must be automatically adjusted for optimal viewing, to ensure “best view” with lucid® enhanced image processing simultaneously adjusted for soft tissue and bone. ",null,"#"]
["2.14","Windowing and leveling of grey scales must be achieved in real time with mouse movement.",null,"#"]
["2.15","The system should have the capability to perform anatomical measurements, straight line and angle measurements of any body part in any 2D projection.",null,1]
["2.16","The system must provide basic Image Storage & Backing‐up options, with a DVD writer and large hard disk drive of 500 Gigabytes",null,"#"]
[3,"IMAGE QUALITY"]
["3.1","Contrast resolution","> 16 000 grey levels (14 bits) - After log compression",1]
["3.2","Fundamental pixel size","60 μm (1x1 binning)",1]
["3.3","Maximum size","1 800 mm x 680 mm (70.9” x 26.8”) (full body size, measured at lowest table height on table top)","#"]
[4,"﻿SCANNER THROUGHPUT ",null,null," "]
["4.1","Linear scanning rate or speed (3 settings)","35 mm/s, 70 mm/s, and 140 mm/s ","#"," "]
["4.2","Beam width (FWHM @ 1000mm from focal spot)","1.4 – 2.8 mm ",1," "]
["4.3","Instantaneous frame rate (X-ray exposure duration at any one point)","22 – 88 milliseconds small slit ",1," "]
["4.4","Full field scan time (AP)","13 seconds ","#"," "]
["4.5","Time from “end-of-scan” until a diagnostic image becomes available on the DVS screen","15 seconds ","#"," "]
["4.6","Best case time between two successive X-rays on the same body","28 seconds ","#"," "]
[5,"﻿IMAGE FLEXIBILITY REQUIREMENTS",null,null," "]
["5.1","Radial angles","0 to 90 degrees. The supine or prone body can be X-rayed in any radial angle from AP (or PA) to the supine lateral positions. ",1," "]
["5.2","Caudal-cranial / Cranio-caudal angles","0 to 10 degrees. Projections can easily be accomplished by angling imaging transversely tabletop as needed. ",1," "]
["5.3","Longitudinal angles","The trolley (gurney) top height can be adjusted vertically by 0 to 340 mm. Adjusting only one side of the trolley gives Trendelenburg angles up to ± 10 degrees. ",1," "]
[6,"﻿MACHINE DIMENSIONS ",null,null," "]
["6.1","Weight","Should be between 1 000  kg -  1 600 kg (not exceed 1 600 kg)",1," "]
["6.2","Maximum dimensions","Should be L x W x H: 2 810 mm x 2 276 mm x 2 271 mm (plus or minus 1 000 mm)",1," "]
["6.3","Room height requirement","Should be 2 450 mm (plus or minus 1 000 mm)",1," "]
["6.4","Operation envelope","Should be L x W x H: 2 834 mm x 2 322 mm x 2 322 mm (plus or minus 1 000 mm)",1," "]
["6.5","Ideal room area","Should be L x W 6 000 mm x 3 000 mm (plus or minus 1 000 mm)",1," "]
[7,"﻿DIGITAL VIEWING STATION (DVS) "," "]
["7.1","Monitor","High luminance (>250 Cd/m²); high contrast (1 000:1) / 1 920 x 1 080 pixels; size of 20 - 30”. ",1," "]
["7.2","DICOM Compliant LCD","Luminance 800 Cd/m² (Typ), DICOM calibrated luminance 500 Cd/m², contrast 400:1 (typ) / 2 048 x 1 536 pixels, size of 20 30”. ",1," "]
["7.3","Type","DVS software must be functionally integrated into the operator’s workstation. ","#"," "]
["7.4","Image storage","500 GB Hard disk (minimum), includes a standard DVD writer. ","#"," "]
["7.5","Image backup","Minimum 1 TB Hard disk (minimum), configurable. ",1," "]
["7.6","Image printing","System must have the capability to print to standard paper printers ","#"," "]
[8,"﻿DETECTOR SYSTEM ",null,null," "]
["8.1","Detector","Proprietary ultra-low noise TDI CCD detector. ",1," "]
["8.2","X-ray to light conversion","Gadox = GdOS2 :Tb ",1," "]
[9,"﻿SMART TROLLEY "," "]
["9.1","Dimensions","L x W x H: 2 448 mm x 704 mm x 803 mm (96.4” x 27.7” x 31.6”) (Plus 200 mm)",1," "]
["9.2","Weight capacity","Patient weights of up to 300 kg should be accommodated.",1," "]
["9.3","Positioning","Height must be adjustable. Must allow Trendelenburg angles. Must automatically rise and lower to accommodate C-arm movement when shifting from AP to lateral orientation. ","#"," "]
["9.4","Body loading / unloading ","Must have a brake function - lock trolley in desired position. ","#"," "]
["9.5","Tabletop attenuation (aluminium equivalence) ","Bariatric (300 kg): 1.5 mm (max) ",1," "]
[10,"﻿NETWORK ",null,null," "]
["10.1","Network data rate","100 Mbps (minimum) ",1," "]
["10.2","Network cables","CAT5 eight core twisted pairs with suitable RJ45 sockets, or better ",1," "]
[11,"RADIATION SCATTER"]
["11.1","The scanning system must employ proprietary X-ray beam controlling mechanism, and linear scanning technique.",null,"#"]
["11.2","The X-ray beam must be highly collimated by a narrow slit and a fan-width adjustment collimator into a laser-like fan beam of primary X-ray photons which spreads out in only one direction (i.e. width).",null,"#"]
["11.3","The narrow beam and high-quality primary photons must reduce the number of X-rays scattered by the body, so no post-patient anti-scatter grid is required.",null,"#"]
["11.4","The detector must be fitted into a scatter-absorbing housing, which is designed to eliminate almost all remaining scatter before detection, increasing the signal to noise ratio in the detected image.",null,"#"]
["11.5","There must be high quality images, resulting in significantly lower patient exposure or user exposure, to achieve diagnostic-quality images.",null,"#"]
["11.6","There must be low exposure with collimated, narrow fan-beam to significantly reduce scattered radiation throughout the room.",null,"#"]
["11.7"," The X-ray tube, X-ray fan beam, collimating slit and detector must all move together along a linear scanning path, collecting X-ray information to produce X-ray images. ",null,"#"]
["11.8","The lower end of the spectrum should be eliminated from the X-ray spectrum used to image the patient, by adding an aluminium filter to the beam as it emerges from the X-ray source, to harden the beam.\nIn addition, a very thin copper filter (0.1 mm) must be installed in each machine for exposures above 110 kV. \n",null,1]
[12,"﻿OUTPUT ",null,null," "]
["12.1","Radiation type","This equipment must emit ionising radiation through an adjustable narrow slit collimator, thereby producing fan-beam scanning across the body. ","#"," "]
["12.2","Typical entrance dose","Chest AP ± 0.115 mGy. Medium Full Body AP ± 0.12 mGy. For typical procedures less than 25% (on average) of equivalent conventional dose would be needed. ",1," "]
["12.3","Scatter radiation","Typical scatter dose measured at 1.5 metre from the center of the smart trolley for an averaged sized adult body at maximum workload (8 bodies per hour – 1 x AP Full Body & 1 x LAT Full Spine) must be 0.116 mSv per hour. ",1," "]
["12.4","X-ray tube","3 500 KHU with rotating anode. ","#"," ",null," "]
["12.5","X-RAY GENERATOR: "]
["12.5.1","Peak power ","64 kW ",1,null,null," "]
["12.5.2","Voltage range ","50 - 145 kVp ±(3% + 1 kVP) ",1,null,null," "]
["12.5.3","Voltage rise time ","2 mS (10 to 90%) ",1,null,null," "]
["12.5.4","Current rang ","32 mA to 400 mA ±(4% + 1 mA) ",1,null,null," "]
["12.5.5","Voltage ripple ",{"v":0.005,"d":"0.50%"},1,null,null," "]
["12.5.6","Exposure time ","0.6 s to 16 s ±(2.5% + 10 ms) ",1]
["12.5.7","Operating frequency ","40 kHz ",1]
[13,"﻿IMAGE VIEWING – Landscape or Portrait Image Display Capabilities "]
["13.1","Image recall","Images must be viewed by Previous, Next, Latest, Case number, Referring doctor, Hospital number etc. ","#"," "]
["13.2","Database","Images in the database belonging to a study or case must be easily retrieved. ","#"," "]
["13.3","Zoom / Pan / Rotate / Aspect Ratio","Real time “mouse wheel” zoom, pan, rotate, and aspect ratio adjustment must be standard. ","#"," "]
["13.4","Image manipulation / lucid image enhancement","Windowing and levelling of grey scales must be automatically adjusted for optimal viewing. Initial “best view” with lucid enhanced image processing simultaneously adjusts for soft tissue and bone viewing. ","#"," "]
["13.5","Anatomical measurement capability","Straight line and angle (eg. Cobb angles) measurements of any body part in any 2D projection must be possible. ","#"," "]
["13.6","Window / Leveling","User must be able to independently select the range of grey scales to be displayed. ","#"," "]
["13.7","Invert function: ","User must be able to change the view from a negative (white bone) to a positive (black bone) image. ","#"," "]
["13.8","Image size","Should be variable, dependent on exposure area, as well as resolution e.g. Full-body, standard resolution will require approximately 30 MB; largest possible image approximately 188 MB equates to 2 600 images on a 500 GB disk. ",1," "]
[14,"﻿POWER REQUIREMENTS ",null," ",null," "]
["14.1","System ASP","Single-phase / N / PE ~ 200 – 240 Vac (25 A) 50/60 Hz ",1,null," "]
["14.2","System smart trolley","Single-phase / N / PE ~ 200 - 240 Vac (16A) Optional 2 charge point from 110 Vac ",1,null," "]
["14.3","System HVG:"]
["14.3.1","System HVG: OPTION 1","Option 1 - 400 Vac (380 Vac) Three-phase / PE 400 Vac (380 Vac) 50 Hz ±1 Hz                                                                                ",1,null," "]
["14.3.2","System HVG: OPTION 2","Option 2 - 480 Vac Three-phase / PE 480 Vac 60 Hz ±1 Hz ",1,null," "]
["14.4","HVG maximum power","51 kW ",1,null," "]
["14.5","Minimum kVA required","76.8 kVA ",1,null," "]
["14.6","RMS line current during exposure ","130 A ",1,null," "]
["14.7","Three phase circuit breaker rating","60 A ",1,null," "]
["14.8","Single Phase circuit breaker rating","20 A ",1,null," "]
["14.9","Maximum power line impedance","0.135 Ω ",1,null," "]
["14.10","HVG standby consumption","500 W ",1,null," "]
[15,"﻿AMBIENT ENVIRONMENT "]
["15.1","Operating ambient temperature range","+10°C to +25°C ",1," "]
["15.2","Relative humidity","40% - 75% ",1," "]
["15.3","TOTAL WEIGHTED SCORE",null,60]