EP2178441A1 - Procédé et appareil d'imagerie radiographique - Google Patents

Procédé et appareil d'imagerie radiographique

Info

Publication number
EP2178441A1
EP2178441A1 EP08772874A EP08772874A EP2178441A1 EP 2178441 A1 EP2178441 A1 EP 2178441A1 EP 08772874 A EP08772874 A EP 08772874A EP 08772874 A EP08772874 A EP 08772874A EP 2178441 A1 EP2178441 A1 EP 2178441A1
Authority
EP
European Patent Office
Prior art keywords
bone
image capture
joint
reference frame
capture surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08772874A
Other languages
German (de)
English (en)
Other versions
EP2178441A4 (fr
Inventor
T. Derek V. Cooke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP12006634A priority Critical patent/EP2543320A1/fr
Publication of EP2178441A1 publication Critical patent/EP2178441A1/fr
Publication of EP2178441A4 publication Critical patent/EP2178441A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4504—Bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/04—Positioning of patients; Tiltable beds or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating thereof
    • A61B6/582—Calibration
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating thereof
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating thereof
    • A61B6/587—Alignment of source unit to detector unit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/50—Depth or shape recovery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
    • A61B34/10—Computer-aided planning, simulation or modelling of surgical operations
    • A61B2034/101—Computer-aided simulation of surgical operations
    • A61B2034/105—Modelling of the patient, e.g. for ligaments or bones
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3966—Radiopaque markers visible in an X-ray image
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3983—Reference marker arrangements for use with image guided surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/16—Details of sensor housings or probes; Details of structural supports for sensors
    • A61B2562/17—Comprising radiolucent components
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/45—For evaluating or diagnosing the musculoskeletal system or teeth
    • A61B5/4528—Joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813—Specially adapted to be attached to a specific body part
    • A61B5/6828—Leg
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/12—Arrangements for detecting or locating foreign bodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
    • A61B6/508—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for non-human patients
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10116—X-ray image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30004—Biomedical image processing
    • G06T2207/30008—Bone
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30204—Marker
    • G06T2207/30208—Marker matrix

Definitions

  • the present invention relates to the field of radiographic imaging.
  • the present invention provides a method and apparatus for generating accurate 3D models from 2D calibrated images.
  • the method and apparatus of the present invention are useful in planning surgery and in sizing of orthopaedic implants, particularly when the joint or bone being supplemented or replaced has been damaged by injury or disease.
  • the present invention may also be used in custom implant manufacture and fit.
  • CT and MRI imaging techniques have been used to generate specific, customized 3D models of the specific part to be replaced. From these models, using CAD/CAM techniques, a custom implant can be created. Cutting tools and blocks are needed to perfect the fit. But the use of CT and MRI imaging techniques are expensive, time consuming and not widely available.
  • Bones and joints are irregular, biological vitally important structural elements of the mammalian skeleton.
  • the skeleton provides the structural support of vital organs (heart, liver, lungs) and the rigid entities (long bones) linked to mobile entities (joints) on which muscles, tendons and ligaments are set to provide motion.
  • Disease affects the musculoskeletal system in forms of joint disease, (arthritis) and bone deformity (fractures, infections, growth disorders).
  • the medical and veterinarian community use images made using radiographs (most commonly radiographs such as X-Rays).
  • the views made are uni-planar images which profile the skeletal structures relative to the muscular ones based on the high mineral content in the skeleton (osseous components of the bones and joints).
  • the difficulty in the interpretation of the images of the diseased M/S entities is the inherent variation and irregularities of the structures based on individual differences, which in turn are modified by disease.
  • Disease such as arthritis damages the joint's surfaces and modifies the shape and its structural/functional integrity. Examples are the common bow legged deformity and medial (inner) joint space collapse seen in Osteoarthritis affecting the medial compartment of the knee.
  • Computational image analysis according to the present invention is optimally undertaken using the positional set ups and distortion correction means as described above.
  • the application uses readily recognizable bone and joint anatomic features (bone landmarks) common to all similar structures in mammals. These landmarks are selected as constant features of long bones and the articular entities of their linking joints. For example, in the lower extremity, the limb's frontal alignment may be defined as neutral, varus (bow legged) or valgus (knock kneed) by the mechanical axes (MAs) of the thigh bone (femur) and the shin bone (tibia).
  • bone landmarks common to all similar structures in mammals. These landmarks are selected as constant features of long bones and the articular entities of their linking joints.
  • the limb's frontal alignment may be defined as neutral, varus (bow legged) or valgus (knock kneed) by the mechanical axes (MAs) of the thigh bone (femur) and the shin bone (tibia).
  • the femur MA is the line extending from the femoral head centre at the hip joint proximally and the apex of the intercondylar notch of the femur distally.
  • the tibial MA is defined as the mid lnterspinous points of the tibial plateau proximally extending to the mid tibial plafond distally at the ankle.
  • the definition of the four points or reproducible bone landmarks in the 2 bones provides the axes of the limb and the angular orientation the alignment of the limb.
  • Frontal alignment may then be further described as the Hip-Knee- Ankle angle (HKA).
  • the present invention uses the four points gathered from a digital image of the limb's X-ray and provides algorithms that automatically calculate the HKA.
  • the use of tangents at the knee's articular surfaces may be defined by bone landmarks at the femoral and tibial medial and lateral margins respectively to provide measurements of the bone and joint contributions to the HKA.
  • the angles so defined may include the Condylar hip angle (CH measures the femoral contribution to HKA), the condylar plateau angle (CP the joint surface contribution) and the plateau ankle angle (PA the contribution of the tibia). These angles are related by the equation:
  • HKA CH + CP + PA (1 )
  • the clinical use of the data derived from the computational derivation of HKA and its components is the understanding of the given limb alignment and, in the case of deformity, the location and extent of the parts (bone or joint or combined) producing it. From this information specific plans may be made for correction by bone realignment or joint reconstruction.
  • the means to gather the coordinate data of the bone landmarks is provided by a number of options.
  • the first is the use of electronic tools in the form of circles, straight lines, rulers, parallel lines and points, which under the users guidance are applied to the selected digital image to define the point (landmark).
  • the femoral head centre is readily defined as the centre of an electronic circle tool activated over the femoral head then dragged at its margins to fit the head's outline.
  • a software algorithm records the x-y coordinates of this point as it marks the FHC the proximal point of the Femoral MA and HKA angle.
  • An electronic ruler and a point tool may be used to define the distal femoral point in the apex of the intercondylar notch (FIC point) as shown on the same image.
  • FIC point intercondylar notch
  • the pixel length is automatically converted to the femoral bone length in mm.
  • a set of landmarks is defined in this way a series of specific solutions that describe the bone and joint geometry and dimensions may be readily produced. These constitute the computational analysis of the limb parts being imaged. This also includes the use of pattern recognition and edge detection techniques which, when appropriately applied to the specific bone will automatically define the FHC and FIC landmarks.
  • the present invention provides a computer based methodology that accurately determines the spatial geometry of bone and joint parts from radiographic images, having also the capacity to derive 3D shapes of the part from two or more radiographic images taken in known orientations.
  • A. The method incorporates:
  • the present invention provides a system for analysis of radiographic and other related imaging modalities (ultrasound, visual, magnetic resonance, tomography etc) of mammalian parts in digital form.
  • This system is designed to be used with analogue radiographic imaging systems, (images transferred to digital form by photographic or scanning means) or preferably with digital forms of Computer Radiography or Direct Radiography.
  • This aspect of the present invention comprises a means to a. reliably and reproducibly produce radiographic and other related image(s) in digital form obtained in one, two or more planes of known orientation, one to itself and to the others (as an example two images at right angles to each other), b. a means to acquire the radiographic image from DICOM or other forms of electronic files, c. a means to optimize the visualization of obtained image, d. a means comprising specialized tools by which measurements are made on objects, which objects may include registration markers provided to be visible in the imaged field, as an object of interest (such as a knee joint), e. a means for gathering said measurements as X-Y coordinates to each other, f.
  • a means for transfer of the selected identifiable features of said registration (calibration) markers and objects measured features in recordable form as data g. a means for storing and reproducing said measurement data for review, h. a means to correct errors of parallax and distortion of said data by the use of the information derived from the pre-mentioned calibration markers, the means thereby to provide levels of known precision for measurements of said radiographic image to tolerances far beyond those obtained by positional means alone, and including; i. means to modify the scalar measurements suitably to meet tolerance standards to appropriately fit implants in bones and joint parts, j.
  • a means to use the coordinate data gathered from one segment of the image to derive geometric properties of the part being imaged, and its relationship to other parts within the imaged field k. the means to link coordinate data obtained from one spatially separate image to another, I. the means to derive mathematical solutions from the analysis of said coordinate data when derived from different parts of the image (for instance the position, geometry and the alignment of knee parts with respect to the hip joint of a given subject from two separated segments of the same image or two images [one of the hip, one of the knee] linked by means of coordinate registration markers), m. a means to create 3 dimensional (3D) models in electronic form from spatially oriented images obtained in defined coordinates one to the other
  • This method of the present invention is designed to be applied/used with analogue radiographic imaging systems or preferably with digital forms of Computer Radiography or Direct Radiography.
  • modules in the form of guides or frames located at strategically selected positions with relation to the mammalian part are used to reliably and repeatably position the limb part in a given orientation (eg a frontal or a lateral position).
  • the modules provide the location for cassette holders or for like electronic receiving receptors, set in desirable locations so as to obtain reliable and repeatable images in selected specific orientations (such as obtaining frontal, lateral, oblique images at known orientations one to the other) of the part.
  • a registration system consisting of radio opaque markers at predefined locations, said markers being in differing forms, distinguishable from one to another, set in geometric coordinates (such as a right angles) to each other in the exterior parts of the said modules.
  • Patterns of markers that can be more easily recognized by software may also be utilized.
  • Electronic programs are utilized, by which radiographic images (such as DICOM or other related file forms) of the selected parts obtained in the ways outlined above are visualised. Programs also may improve the visualization of the image.
  • Program software provides a wide selection of measurement tools in electronic form (line, ruler, angles, circle, midline with various functional characteristics for adding right angles or parallel lines).
  • Software tools are used to measure objects in the image, including registration marker locations and the geometric information of desired imaged parts (knee joint angles or linear dimensions) and store said coordinates in mathematical form to derive linear and geometric information about said calibration markers and imaged object.
  • Mathematical solutions are applied to these collected data to correct the errors induced by parallax and distortion and mathematical algorithms applied to the coordinate corrected data obtained form image used to derive select information such as the frontal leg alignment angles and leg lengths.
  • a data set defining a three dimensional image consisting of selected landmarks and radiographic markers is related, which can then be composed to other data sets in a database, to determine a close match (it being understood that no two bones or joints are identical) that can be used to model a three dimensional image of the bone or joint, in undamaged condition for the use of a surgeon in selecting an implant, planning surgery, or making a custom implant.
  • the present invention relates to a method of imaging a bone comprising the steps of: a) positioning a bone or joint relative to an x-ray imaging apparatus having a source of radiation; b) positioning a plate containing radio-opaque markers at known locations between an x-ray apparatus having a source of radiation and a first image capture surface, at a known location relative to first image captive surface; c) positioning at least two radio-opaque markers in a plane at a known angle relative to said first image capture surface; d) irradiating said bone to be imaged, and said first image capture surface to obtain a first x-ray image, and then removing said first image capture surface; e) positioning a second image capture surface proximate to said bone or joint, at a known angle to the location of said first image capture surface; f) positioning a plate containing radio-opaque markers at known locations between the second image capture surface and the bone or joint to be imaged; g) positioning at least two
  • 'landmark' refers to anatomic features such as crests, ridges, tendon or ligament attachment sites and the like, that can be reliably and repeatedly located with precision on a bone, and show little or no variation in location on the bone from subject to subject. Moreover, the term 'landmark' may be taken as including distinct profiles and shapes, especially those that, in known orientation can be recognized by appropriate software.
  • the present invention relates to a reference frame for use in a radiographic procedure, said reference frame being positionable relative to a joint or bone to be imaged, and being radio-transparent, and having embedded or affixed thereto a plurality of computer recognizable radio opaque markers.
  • Fig. 1 is a top view of a leg holding frame for holding a leg while the knee is imaged;
  • Fig. 2 is a front view of the frame of Fig. 1 ;
  • Fig. 3 is a side view of the frame of Fig. 1 ;
  • Fig. 4 is a side view of the frame of Fig. 1 , showing a leg, including a knee joint, in the leg holding frame;
  • Fig. 5 is a top view of a hip reference frame for use in the present invention.
  • Fig. 6 is a front view of the reference frame of Fig. 5;
  • Fig. 7 is a side view of the reference frame of Fig. 5;
  • Fig. 8 is a top view of the reference frame, in position relative to the pelvic region of a patient.
  • a suitable frame for immobilizing a leg during x-ray imaging is shown.
  • the frame conspires a leg holder 1 having vertical side walls 2. End walls 3.4 may be provided, to ensure rigidity of the entire structure.
  • Top walls 5 extend the length of the leg holder, from end to end, and flank a channel 6 that extends the length of the leg holder.
  • the function of the channel 6 is to accommodate a leg therein, so as shown in Fig. 3, the channel will incline and converge slightly towards the foot end thereof.
  • Channel 6 has inclined walls 7 and a floor 8 that are preferably lined with a thin foam liner 9 that will make the leg more comfortable in the holder and also permit the leg to settle so as not to move between imaging steps, as will be explained below.
  • the entire leg holder, including the foam lining 9 is fabricated from a radio- transparent material such as lucite or any other suitable material.
  • a plurality of radio-opaque markers 10 are embedded in the two side walls 2 of the leg holder, opposite the middle area thereof, so that they will appear on an x- ray image of a knee.
  • the markers may be simple lead beads, but preferably, each marker is a unique computer identifiable shape and/or part of a computer recognizable pattern, for reasons that will be explained below.
  • a transparent plate 11 ie, preferably both radio and visible light transparent
  • a measuring scale or ruler 11a made of radio opaque material is provided, to be placed on top of the top walls 5 when the leg has been placed in the holder.
  • hip reference frame Since the manner of use of the leg holder and the pelvic or hips reference frame shown in Figures 5-8 is very similar, a description of the hip reference frame follows:
  • a hip reference frame 13 is provided.
  • Frame 13 consists of a top plate 14, a bottom plate 15, and an upright plate 16.
  • the upright plate 16 may comprise three panels 17, 18 and 19, with the side panels 17, 19 being angled with respect to the central panel 18.
  • the purpose of angling the panels is to provide structural rigidity to the frame, and to provide a surface, ie one of the side panels 17, that can be oriented parallel to an image sizing surface, and another surface, 19 that is substantially normal thereto.
  • the upper panel, lower panel and upright panel are each made from a radio- transparent material and will preferably also be made from a visible light transparent material, for ease of positioning.
  • a plurality of radio opaque markers 10 are affixed to or embedded in the plates 14, 15 and 16. The markers are distinctive, computer recognizable shapes and/or will be in computer recognizable patterns.
  • the function of the frames, and markers provided in the present invention is to provide a three dimensional network of markers in known locations so that when an x-ray image of a bone or joint is taken with the bone or joint in the reference frame, the image of the known network of markers is also captured. If a second image is then taken of the same bone or joint, without having moved the bone (or joint) or the reference frame, at a known angle to the first image, the three dimensional location of identifiable landmarks on the bone can easily be calculated by appropriate software. Preferably, the second image is taken at 90° to the first. The selection of 90° is because it will render a pair of x-ray images that can be more easily received and corelated by a person seeing them. As to determination of landmark location by computer, it is only necessary that the second image be taken at a known angle relative to the first.
  • the method of the present invention using the reference frames of the present invention, is able to generate a fairly complete three dimensional image of a bone or joint after having taken only two x-rays - many fewer than the number required to generate a three dimensional image using conventional CT scanning.
  • the three dimensional image produced by the present invention will not show the particular damage or abnormalities associated with a bone or a joint, it will provide very useful information that can be used to select an implant size, or plan surgery.
  • the location of landmarks is currently a task that must be undertaken by an individual. That is, the individual selects several landmarks that are visible on each of the two images, and enters the coordinates (manually, by a touch screen or with a mouse click) of each landmark on each x-ray image. Since the landmark will not have changed actual position in space or position in space relative to the markers that the computer can locate and identify in each image, and the relative angle at which each image was taken will be known, then calculation of the position in space of each landmark, and assigning a three dimensional coordinate to it will not be difficult. Matching the co-ordinates of a pair of landmarks to the co-ordinates of those same landmarks in a database of healthy bones and joints will be a fairly simple task.
  • the present invention by the use of simple but novel reference frames, examples of which have been shown for the knee and the hip/pelvis, provides a means by which a three dimensional model of a joint or bone can be made with only two e-ray images being required.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Optics & Photonics (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Rheumatology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

L'invention concerne un cadre de référence destiné à être utilisé dans une procédure radiographique. Le cadre de référence peut être positionné par rapport à une articulation ou un os à imager, et est radio-transparent. Une pluralité de marqueurs radio-opaques reconnaissables par ordinateur a été incorporée ou collée au cadre. L'invention concerne en outre un procédé permettant d'obtenir des images tridimensionnelles d'os ou d'articulations qui utilise le cadre.
EP08772874A 2007-07-10 2008-07-09 Procédé et appareil d'imagerie radiographique Withdrawn EP2178441A4 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12006634A EP2543320A1 (fr) 2007-07-10 2008-07-09 Appareil d'imagerie radiographique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002593185A CA2593185A1 (fr) 2007-07-10 2007-07-10 Methode et appareillage de radiographie
PCT/CA2008/001257 WO2009006736A1 (fr) 2007-07-10 2008-07-09 Procédé et appareil d'imagerie radiographique

Publications (2)

Publication Number Publication Date
EP2178441A1 true EP2178441A1 (fr) 2010-04-28
EP2178441A4 EP2178441A4 (fr) 2012-03-28

Family

ID=40224414

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12006634A Withdrawn EP2543320A1 (fr) 2007-07-10 2008-07-09 Appareil d'imagerie radiographique
EP08772874A Withdrawn EP2178441A4 (fr) 2007-07-10 2008-07-09 Procédé et appareil d'imagerie radiographique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12006634A Withdrawn EP2543320A1 (fr) 2007-07-10 2008-07-09 Appareil d'imagerie radiographique

Country Status (3)

Country Link
EP (2) EP2543320A1 (fr)
CA (1) CA2593185A1 (fr)
WO (1) WO2009006736A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8236082B2 (en) 2009-06-19 2012-08-07 Hollingsworth & Vose Company Flutable fiber webs with high dust holding capacity
EP2660776A1 (fr) 2012-05-01 2013-11-06 Universität Bern Correction de distorsion d'image et détection de fantôme robuste
US9241682B2 (en) * 2013-03-12 2016-01-26 Depuy Synthes Products, Inc Apparatus and method for calibrating an x-ray image of a knee of a patient
BR102013033625B1 (pt) * 2013-12-27 2022-03-03 Universidade Federal De Minas Gerais Posicionador para aquisição e controle de qualidade de imagem radiográfica de joelhos em flexão fixa
JP6677470B2 (ja) * 2015-09-14 2020-04-08 株式会社東芝 外力検出装置、外力検出方法、およびプログラム

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5923727A (en) * 1997-09-30 1999-07-13 Siemens Corporate Research, Inc. Method and apparatus for calibrating an intra-operative X-ray system
US5951475A (en) * 1997-09-25 1999-09-14 International Business Machines Corporation Methods and apparatus for registering CT-scan data to multiple fluoroscopic images
US6050724A (en) * 1997-01-31 2000-04-18 U. S. Philips Corporation Method of and device for position detection in X-ray imaging
US6379041B1 (en) * 1998-11-02 2002-04-30 Siemens Aktiengesellschaft X-ray apparatus for producing a 3D image from a set of 2D projections
US20030088179A1 (en) * 2000-04-28 2003-05-08 Teresa Seeley Fluoroscopic tracking and visualization system
US20030139663A1 (en) * 2002-01-17 2003-07-24 Siemens Aktiengesellschaft Registration procedure in projective intra-operative 3D imaging
US20040068187A1 (en) * 2000-04-07 2004-04-08 Krause Norman M. Computer-aided orthopedic surgery
US20060155189A1 (en) * 2002-06-20 2006-07-13 Stephane Lavallee Determination of the position of a radiographic or radioscopic unit
US20060204067A1 (en) * 2005-02-18 2006-09-14 Gregor Tuma Determining shaft and femur neck axes and three-dimensional reconstruction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6978166B2 (en) * 1994-10-07 2005-12-20 Saint Louis University System for use in displaying images of a body part
US5967982A (en) * 1997-12-09 1999-10-19 The Cleveland Clinic Foundation Non-invasive spine and bone registration for frameless stereotaxy
US6917827B2 (en) * 2000-11-17 2005-07-12 Ge Medical Systems Global Technology Company, Llc Enhanced graphic features for computer assisted surgery system
WO2004058085A1 (fr) * 2002-12-27 2004-07-15 Neurokinetic Aps Dispositif de localisation de coordonnées stéréotaxiques
US20050059879A1 (en) * 2003-09-16 2005-03-17 Robert Sutherland Localization of a sensor device in a body
DE102005006775A1 (de) * 2005-02-15 2006-08-17 Maquet Gmbh & Co. Kg Anordnung zur intraoperativen Registrierung
WO2008002992A1 (fr) * 2006-06-27 2008-01-03 Smith & Nephew, Inc. élément externe de fixation radioluminescent DOTÉ D'UNe structure d'alignement radio-OPAQUE

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6050724A (en) * 1997-01-31 2000-04-18 U. S. Philips Corporation Method of and device for position detection in X-ray imaging
US5951475A (en) * 1997-09-25 1999-09-14 International Business Machines Corporation Methods and apparatus for registering CT-scan data to multiple fluoroscopic images
US5923727A (en) * 1997-09-30 1999-07-13 Siemens Corporate Research, Inc. Method and apparatus for calibrating an intra-operative X-ray system
US6379041B1 (en) * 1998-11-02 2002-04-30 Siemens Aktiengesellschaft X-ray apparatus for producing a 3D image from a set of 2D projections
US20040068187A1 (en) * 2000-04-07 2004-04-08 Krause Norman M. Computer-aided orthopedic surgery
US20030088179A1 (en) * 2000-04-28 2003-05-08 Teresa Seeley Fluoroscopic tracking and visualization system
US20030139663A1 (en) * 2002-01-17 2003-07-24 Siemens Aktiengesellschaft Registration procedure in projective intra-operative 3D imaging
US20060155189A1 (en) * 2002-06-20 2006-07-13 Stephane Lavallee Determination of the position of a radiographic or radioscopic unit
US20060204067A1 (en) * 2005-02-18 2006-09-14 Gregor Tuma Determining shaft and femur neck axes and three-dimensional reconstruction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009006736A1 *

Also Published As

Publication number Publication date
EP2178441A4 (fr) 2012-03-28
EP2543320A1 (fr) 2013-01-09
CA2593185A1 (fr) 2009-01-10
WO2009006736A1 (fr) 2009-01-15

Similar Documents

Publication Publication Date Title
US20090018437A1 (en) Radiographic imaging method and apparatus
US8644909B2 (en) Radiographic imaging method and apparatus
US10441437B2 (en) System for determining the position of a knee prosthesis
US9610134B2 (en) Alignment plate apparatus and system and method of use with virtual alignment grid
US11020183B2 (en) Method for designing a patient specific orthopaedic device
Sato et al. Three-dimensional lower extremity alignment assessment system: application to evaluation of component position after total knee arthroplasty
EP2543320A1 (fr) Appareil d'imagerie radiographique
US20230005232A1 (en) Systems and methods of using three-dimensional image reconstruction to aid in assessing bone or soft tissue aberrations for orthopedic surgery
Stagni et al. A new semi-automated measurement technique based on X-ray pictures for ankle morphometry
Donati et al. Enhanced anatomical calibration in human movement analysis
US20230263498A1 (en) System and methods for calibration of x-ray images
US20200069372A1 (en) Method and system for navigating a bone model in computer-assisted surgery
Cassar-Pullicino et al. Measurements in musculoskeletal radiology
Amiri et al. A model-free feature-based bi-planar RSA method for kinematic analysis of total knee arthroplasty
Berthonnaud et al. The anatomic patterns of the lower limb from three-dimensional radiographic reconstruction of bones (3drrb)
Allen Development and validation of a markerless radiostereometric analysis (RSA) system
Chimhundu Interlandmark measurements from lodox statscan images with application to femoral neck anteversion assessment
Huotilainen Nilkkanivelen tietokonetomografia-liikemallinnus potilaskohtaisen ulkoisen tuen suunnittelua varten
Huotilainen Computed tomography based talocrural joint motion capture

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20100210

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

DAX Request for extension of the european patent (deleted)
A4 Supplementary search report drawn up and despatched

Effective date: 20120223

RIC1 Information provided on ipc code assigned before grant

Ipc: G06T 7/00 20060101ALI20120217BHEP

Ipc: A61F 5/37 20060101ALI20120217BHEP

Ipc: A61B 5/103 20060101ALI20120217BHEP

Ipc: A61B 19/00 20060101ALI20120217BHEP

Ipc: A61B 5/107 20060101ALI20120217BHEP

Ipc: A61B 6/12 20060101ALI20120217BHEP

Ipc: A61B 6/00 20060101ALI20120217BHEP

Ipc: A61B 6/02 20060101AFI20120217BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20120925