News | Dec 21, 2020

Advances in radiography – modern imaging system uDR 596i

W numerze 5/2020 dwumiesięcznika "Inżynier i Fizyk Medyczny" polecamy artykuł Pana Krzysztofa Lewandowskiego – kierownika Pracowni Diagnostyki Rentgenowskiej w Inowrocławiu, w którym opisał roczne doświadczenie w pracy z systemem obrazowania cyfrowego United Imaging uDR596i.

Krzysztof Lewandowski

Electroradiologist, head of the X-ray laboratory, graduate of the Poznan University of Medical Sciences, Member of the Commission for external procedures and clinical audits in the field of radiology, diagnostic imaging and surgical radiology, appointed by the Minister of Health. Awarded with a badge of honour "For services to health" 
ul. Wojska Polskiego 7A, 99-100 Inowrocław, phone +48 606 621 060, e-mail: xrayino@gmail.com

Technological innovations in digital radiography are increasingly surprising. Such an example is the uDR 596i imaging system, which in its minimalist design combines a high level of technology, aesthetics and is patient and user friendly. I can vouch for such an introduction, as I have been a user of such a system since 28 October 2019.

 

Configuration of radiographic digital imaging system

Main components:

  • a lung stand with a large imaging area detector of 427 x 427 mm and a removable anti-scatter grid and the AEC system,
  • radiographic table with a 427 x 427 mm wireless imaging detector and with the AEC system,
  • motorized column with Toshiba Rotanode XRR-3331 X-ray tube with foci of 1.2/0.6 and max. voltage of 150 kV, fully automatic collimator and a touch screen for checking patient data and possibly changing test parameters,
  • a 65 kW high voltage generator,
  • control console with intercom function,
  • a stand for combining images,
  • the image acquisition system, that is, the heart of the system — a computer with an innovative application supporting complete workflow processes, including patient registration and management, patient examination by selecting the appropriate examination protocol, review and sending the test to the PACS server and a robot controlled by software providing 100% DICOM for printing tests on CDs.

 

Extremely stable and ergonomic design of the device

All components of the imaging system have been refined so that the user can count on comfort, safety and ease of use. All handles, buttons, centering and synchronization indicators are available from all sides. The stand can be moved manually or using a motor — it is possible to automatically centre and synchronize the X-ray tube assembly with the stand. The mechanical part has been so robustly constructed that we can be sure of eliminating the motion blur caused by vibration of the system components. A stand for combining images is included with the apparatus. The base of the stand is designed for a load of 204 kg. A fixed radiographic table with an active foot withstands a load of 250 kg.

 

Large-area wireless panel detector

The uDR 596i system offers a panel detector with an imaging area of 427 x 427 mm, a resolution of 3072 x 3072 with a maximum spatial resolution of 3.6 Lp/mm. The material it uses for imaging is a photodiode made of amorphous silicon, and the scintillating material is cesium iodide. The panel has a built-in charger capacitor and provides uninterrupted testing with more energy reserve. Easy access to the charging function ensures consistent detector performance.

 

Image acquisition system — the brain and heart of the system

The image acquisition system has been divided into four modules:

  1. Patient registration - used to enter basic patient information:
    • identifier,
    • surname,
    • sex,
    • date of birth — the system automatically calculates the age of the patient.
    The area of protocols includes a diagram used to select the examined part of the body and the corresponding protocol. The protocols are divided into three age groups: infant, child and adult.
  2. Patient management — is used to manage patient data and facilitates archiving, import and export of research data.
  3. Patient examination — provides a complete package of solutions for the examination of patients, supporting the selection and adaptation of the acquisition system, taking into account the age group, their physique as well as projection and exposure mode and focus size. All the time we have information about the status of the system, including exposure dose, distance from the image source, centering, synchronization, the state of the anti-scatter grid and the detector, and availability of the system for exposure. The screen in this module is divided into eight areas:
    • examination settings — position and physique of the patient, exposure parameters and focus size, sensitivity, selection of the measuring field of the ionization chamber, preliminary size of the radiation field;
    • system status — allows for checking the cumulative value of the dose area product (DAP), exposure dose, the source-to-image distance (SID), status of: centering, exposure, anti-scatter grid, detector charge, preparation for exposure;
    • displaying images after exposure;
    • a list of protocols and their addition;
    • the position of the image detectors in a stand, on a table or outside the cassette;
    • a list of images taken during the examination;
    • tools for image processing;
    • function buttons for automatic archiving and completion of the examination.
  4. Overview of images with the possibility of printing on film.
  5. An optional module is the image linking function, which allows for obtaining radiograms of the entire lower limb or the entire spine.

The system allows for the management of examination protocols, and it is possible to program individual protocols in accordance with working procedures.

 

Remote support

Remote support is provided via LAN, allowing for immediate response via the system and user control over connections and queries sent to the service.

 

Acceptance, specialist and operational tests

The diagnostic quality of the X-ray image and the radiation exposure of the patient and staff depend directly on the technical condition of the radiation source itself and the auxiliary apparatus. An analysis of the consistency of the measurement results carried out over the year from the installation of the apparatus by the same accredited laboratory, showed high compliance with the reference values.

Im: 1/1, Se: 1000, Test, X-ray laboratory K. Lewandowski, PA view skull

 

Let the radiograms defend themselves

Summing up the one-year experience with uDR 596i system, I can conclude that radiograms and their descriptions are more detailed (one of the radiologists, when reviewing the study, stated that now they will need to devote more time to the description). And, from the radiographic point of view, I can add that I see more than before — more dynamics, better resolution of details, delicate contrast transitions.

Below is an example of such professional and repeatable radiographic images I am sending for description.

Standing

Passion For Change

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