Measurement of venous leg ulcers with a laser‐based three‐dimensional method: Comparison to computer planimetry with photography

Kecelj-Leskovec, Nada; Jezeršek, Matija; Možina, Janez; Pavlović, Miloš; Lunder, Tomaž

doi:10.1111/j.1524-475x.2007.00300.x

Cited by 32 publications

(30 citation statements)

References 15 publications

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“…However, while several existing commercial products, notably the Aranz and Eykona systems, have a reasonable body of associated clinical evidence, the pace of technological development means the field remains rapidly changing; the authors are aware of several groups active in this area of research. 31,35,36 As yet, no system has demonstrated widespread adoption in routine clinical use.…”

Section: Resultsmentioning

confidence: 99%

Applying 21st Century Imaging Technology to Wound Healing: An Avant-Gardist Approach

Bowling

Paterson

Ndip

2013

J Diabetes Sci Technol

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Abbreviations: (2D) two-dimensional, (3D) three-dimensional, (app) application, (EMR) electronic medical recordKeywords: diabetic foot, imaging, technology, wound healing, wounds AbstractA significant arising complication in the care of patients with diabetes is increased susceptibility to chronic wounds, including diabetic foot ulcers and pressure sores. This is driven by, e.g., neuropathy and peripheral arterial disease. It is well recognized that best practice in wound care requires wound assessment, including measurement, on presentation and regularly throughout the treatment program. Proper assessment is necessary to ensure that the most appropriate and cost-effective therapy is used at all times, with quantitative measurement necessary to track the efficacy of the chosen approach. A documented assessment can also assist patient-clinician dialog and discussion within the multidisciplinary team. Remote evaluation and assessment of the wound is also of increasing importance and practicality through the use of a telemedicine approach. There has been considerable progress in the space of imaging for wounds, including systems that include threedimensional measurement and telemedicine features. This literature review examines the available options and reviews the clinical evidence for measurement accuracy, scope for remote assessment, and published user feedback on the systems. J Diabetes Sci Technol 2013;7(5):1190-1194 SYMPOSIUMFoot ulcers are one of the most common complications of diabetes, affecting up to 25% of patients during their lifetime 1 and frequently resulting in hospitalization. 2-4Diabetic foot ulcers are also associated with significant morbidity and mortality, 5 with 80% of all diabetes-related lower extremity amputation being preceded by a foot ulcer. 6 Together with prevention strategies, proper management must be a mainstay in the approach to curbing the burden associated with foot ulcers.Accurate recognition and monitoring of ulcer characteristics facilitates benchmarking therapeutic response. Further, if research into new agents/interventions for wound healing should continue to inform practice, it is essential that ulcer characteristics are well defined in order to (i) enable comparison between studies, (ii) determine which patients/ulcers derive the most benefits from a particular therapeutic approach, and (iii) allow accurate monitoring of wound healing in order to guide clinical decision making.

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Section: Resultsmentioning

confidence: 99%

Applying 21st Century Imaging Technology to Wound Healing: An Avant-Gardist Approach

Bowling

Paterson

Ndip

2013

J Diabetes Sci Technol

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“…The wound volume was determined as the volume between the measured surface and the virtual healthy skin. In that way the medical personnel can objectively evaluate the progress of the healing, and change the course of treatment if necessary [11]. In second application the human head orientation with respect to the torso was measured.…”

Section: Results and Applicationmentioning

confidence: 99%

Handheld 3D Measuring System Based on DSLR Camera

Pavlovčič¹,

Jezersek²,

Možina³

2012

Proceedings of the 3rd International Conference on 3D Body Scanning Technologies, Lugano, Switzerland, 16-17 October 2012

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A handheld color 3D measuring system is presented. It consists of a commercial DSLR camera body, a 50mm fixed focal length lens and a grating projection system with a built-in camera flash used as a light source. The grating mask is composed of up to 140 equally spaced stripes, with the stripes period of 48 μm. The projector uses 25mm focal length lens. All parts with the exception of the grating projection optics and a ring-shaped connection arm are commercially available. The 3D shape is reconstructed from a single image using the Fourier Transform Profilometry method. 3D reconstruction based on the triangulation principle is performed after the phase unwrapping. The measuring system is calibrated using the reference geometry method. The precision of the measuring system is 1.4 mm for measuring range 700x520x400 mm at the distance of 2000 mm and 0.5 mm for measuring range 300x260x200 mm at the distance of 1000 mm. The image acquisition time can be as short as 1/200 s. The measuring system is used in various medical research studies in cooperation with the Neurologic Clinic, Department of Dermatovenerology and Department of Traumatology from University Medical Center Ljubljana. In one of the applications the orientation of the human head with respect to the torso is measured to accurately diagnose and to evaluate the course of treatment of patients with torticollis disease. In a second application the skin erosion and wound shape before and after the treatment are monitored. The apparatus has proven to be a robust and easy to use, which is a precondition for efficient, fast and accurate measurements.

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“…Based on these two measurements, the area of the wound is estimated as a rectangle [16] or as an ellipse [4]. When the model is a rectangle, the area may be overestimated by 10% to 45% with less accuracy for smaller wounds [16].…”

Section: Common Practices For Wound Assessmentmentioning

confidence: 99%

“…This process is time consuming and prone to human error. Alternatively, the outline could be trace directly into a digital pad [13,16,28]. Several studies have shown that the most important factor in error measurement is the correct and consistent identification of the border of the wound due its poor definition or the subjectivity of the process [7].…”

Section: Common Practices For Wound Assessmentmentioning

confidence: 99%

Imaging technologies applied to chronic wounds

Casas

Castaneda

Treuillet

2011

Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies

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Chronic wounds are a major problem in healthcare worldwide. The assessment and treatment of chronic wounds include monitoring color and size (area or volume) at regular intervals by an expert. This evaluation is often based on qualitative observation and manual measurements of the wound (using a caliper or tracing methods). Over the last two decades, several researchers have focused on developing technologies to assess the clinical improvement of chronic wounds. This article aims to provide a survey on imaging technologies applied to chronic wounds. Their accuracy, precision, reliability, ergonomics and usage are compared. In general terms, the survey aggregates the different methods into 3 groups: planimetric techniques, volumetric techniques and color classification. Finally, a discussion is provided on open topics and what progress needs to be done in this area of research. Among other key points, visionbased technologies for wound assessment should emphasize clinical validation, correlation of clinical findings with quantitative metrics and application to tele-dermatology. General TermsMeasurement

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Measurement of venous leg ulcers with a laser‐based three‐dimensional method: Comparison to computer planimetry with photography

Cited by 32 publications

References 15 publications

Applying 21st Century Imaging Technology to Wound Healing: An Avant-Gardist Approach

Applying 21st Century Imaging Technology to Wound Healing: An Avant-Gardist Approach

Handheld 3D Measuring System Based on DSLR Camera

Imaging technologies applied to chronic wounds

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