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Found 24 results

  1. Magnetic resonance imaging (MRI) allows for the delineation between normal and abnormal tissue on a macroscopic scale, sampling an entire tissue volume three-dimensionally. While MRI is an extremely sensitive tool for detecting tissue abnormalities, association of signal changes with an underlying pathological process is usually not straightforward. This digital model can then be used to create a 3D-printed custom holder for the brain. (1,2,3) An MRI sequence is a number of radiofrequency pulses and gradients that result in a set of images with a particular appearance. When describing most MRI sequences we refer to the shade of grey of tissues or fluid with the word intensity, leading to the following absolute terms: - high signal intensity = white - intermediate signal intensity = grey - low signal intensity = black Often we refer to the appearance by relative terms: - hyperintense = brighter than the thing we are comparing it to. - isointense = same brightness as the thing we are comparing it to. - hypointense = darker than the thing we are comparing it to. This week we´d like to share the best MRI images from embodi3d. Also, we invite you to become an embodi3D® member and get full access, it´s easy and free! 1. Aortic type III MRI 3D reconstruction This excellent 3D model was uploaded by valchanov. The aortic arch type III is described using as criterion the vertical distance from the origin of the brachiocephalic trunk (BT) to the top of the arch in the parasagittal ‘stretched-out’ projection. This distance is < 2 diameter of the left common carotid artery (LCA). This can influence the feasibility and difficulty of interventional and/or surgical maneuvers. 2. An head´s MRI pmcpartlan uploads this brain´s MRI, T1 sequence. In the context of neurosurgical planning, one can lay implantable devices on the skull or brain to see precise ultimate spatial fits, as well as anticipate surgical approaches such as any bone windows. The 3D models can also be excellent educational tools that are more robust and less toxic than fixed tissue. 3. An MRI of 25 year old male In this 3D model reconstruction we can see we exquisite detail all the structures of the face. Excellent for surgical planning. 4. A left knee MRI after an injury This MRI shows patella´s osteophytes. The cruciate ligaments and meniscus are normal. 5. Left hemisphere´s brain tumor. Contrast enhancement visualized. Homogeneous enhancement can be seen in: Metastases, Lymphoma, Germinoma and other pineal gland tumors Pituitary macroadenoma, Pilocytic astrocytoma and hemangioblastoma (only the solid component), Ganglioglioma, Meningioma and Schwannoma. Three-dimensional models and navigation systems for neurosurgery can be combined to improve surgical planning and surgeon training. An study titled: New Directions in 3D Medical Modeling: 3D-Printing Anatomy and Functions in Neurosurgical Planning reported herein demonstrates that preoperative planning using diffusion tensor imaging (DTI) tractography and 3D models is feasible and can be employed in the preparation of complex operations. Additionally, it is likely that this process can shorten operation times, contribute to better patient safety, and be used for training surgeons. 6. Right anterior cruciate ligament´s injury This knee MRI without contrast shows an anterior cruciate ligament´s injury. Most tears occur in proximal or mid portion of ligament. Staging, Grading, & Classification • Complete tear: Ligament functionally incompetent ○ Some fibers may remain morphologically intact • Partial tear ○ High grade (unstable): Abnormal Lachman but not completely disrupted – Usually ≥ 50% of ligamentous cross section disrupted. – Tears involving 50-75% of ligament → high likelihood of progression to complete tear. ○ Low grade (stable): Some laxity on exam but defined endpoint on anterior drawer test. Image Interpretation Pearls • Use axial MR images to determine partial vs. complete 7. Lumbar spine´s MRI In this MRI we can see L4-L5 bulging and osteodegenerative changes. Thanks Dr. Pablo Andres Rodriguez Covili, Medico Neurorradiólogo/Chile. 8. Normal hand finger anatomy by MRI Hand´s MRI can provide important information for diagnosis and evaluation of soft-tissue trauma in the fingers. An optimal imaging technique should include proper positioning, dedicated surface coils, and specific protocols for the suspected abnormalities. Familiarity with the fine anatomy of the normal finger is crucial for identifying pathologic entities. MR imaging is a powerful method for evaluating acute and chronic lesions of the stabilizing articular elements (volar plate and collateral ligaments) of the fingers and thumbs, particularly in the frequently affected proximal interphalangeal and metacarpophalangeal joints. In the palmar aspect of the hand, the flexor digitorum superficialis (FDS) tendons of the lesser (second-fifth) digits insert onto the palmar aspects of the bases of the middle phalanges. Prior to their insertion, they briefly split at the level of the proximal phalanges then reunite at the level of the proximal interphalangeal (PIP) joints to create ring apertures for passage of the flexor digitorum profundus (FDP) tendons. In the dorsal aspect of the hand, the digital branches of the extensor digitorum (ED) tendon trifurcate distal to the metacarpophalangeal (MCP) joint. A central band from each ED branch inserts on the dorsal aspects of the bases of the lesser middle phalanges. Radial and ulnar bands continue more distally to insert on the dorsal aspects of the bases of the distal phalanges. The MCP joint collateral ligaments of the thumb and lesser digits extend with slight obliquity from shallow depressions on the radial and ulnar aspects of the metacarpal heads to the bases of the proximal phalanges. 9. Left foot MRI An incredible foot´s MRI showing the normal anatomy with exquisite detail. Excellent for surgical assessment. 10. Another Lumbar spine´s MRI This MRI shows normal anatomy. References 1. Demertzis, S., Hurni, S., Stalder, M., Gahl, B., Herrmann, G., & Van den Berg, J. (2010). Aortic arch morphometry in living humans. Journal of anatomy, 217(5), 588-596. 2. Jones, J. (2018). MRI | Radiology Reference Article | Radiopaedia.org. Radiopaedia.org. 3. Luciano, N. J., Sati, P., Nair, G., Guy, J. R., Ha, S. K., Absinta, M., ... & Reich, D. S. (2016). Utilizing 3D printing technology to merge mri with histology: a protocol for brain sectioning. Journal of visualized experiments: JoVE, (118). 4. Naftulin, J. S., Kimchi, E. Y., & Cash, S. S. (2015). Streamlined, inexpensive 3D printing of the brain and skull. PLoS One, 10(8), e0136198. 5. Bahadure, N. B., Ray, A. K., & Thethi, H. P. (2017). Image analysis for MRI based brain tumor detection and feature extraction using biologically inspired BWT and SVM. International journal of biomedical imaging, 2017. 6. Mirvis, S. E. (2016). Diagnostic Imaging: Musculoskeletal: Trauma.
  2. abbes

    IRM MED TUN

    Version 1.0.0

    2 downloads

    MEDICAL PROTOTYPE, mri, sagittal, coronal, body, intervertebral, disk, joint, scoliosis, t2, sacrum, lumbar, dorsal, spine, medulla, oblongata, paravertebral, muscles, uterus, endometrium, urinary, bladder,

    Free

  3. ThatsNotAMoon

    brainnn2

    Version 1.0.0

    4 downloads

    not too sure whats going on, head, neck, axial, stl, dicom, 3dmodel, print, brain, lobules, Frontal sinus, Frontal bone, Falx cerebri, Orbital gyri, Straight gyrus, Anterior cerebral artery, Anterior communicating artery, Internal carotid artery, Superior temporal gyrus, Middle temporal gyrus, Middle cerebral artery, Posterior communicating artery, Optic chiasm, Amygdaloid body, Pituitary stalk, Lateral ventricle (temporal horn), Dorsum sellae, Hippocampus, Pentagon of basal cisterns, Inferior temporal gyrus, Posterior cerebral artery, Parahippocampal gyrus, Tentorium cerebelli, Basilar artery and basal sulcus, Pons Sigmoid sinus, Cerebellar peduncle (middle), Fourth ventricle, Dentate nucleus, vermis of cerebellum (superior part), Temporal bone, Confluence of the sinuses, Cerebellar hemisphere, Transverse sinus, Occipital bone, maxilla, maxillary, sinus, hard, palate, nasopharynx, nasal septum, lower turbinates, mandible, MRI, t2. axial

    Free

  4. Chempolo

    Spine 2

    Version 2.0.0

    19 downloads

    vertebral column - stl file processed Have embodi3D 3D print this model for you. Learn More. This file was created with democratiz3D. Automatically create 3D printable models from CT scans. Learn more. MRI, t2, t1 STIR, lumbar, spine, diaphragm, psoas, muscle, kidney, ligaments, anterior, posterior, transverse, spinous, apophysis, medulla, spinal, fluid, scoliosis, rectification, joints, disc, interverterbral, without, contrast, iliac, bone, crest, sacroiliac, joint,

    Free

  5. Version 1.0.0

    4 downloads

    vertebral column - stl file processed Have embodi3D 3D print this model for you. Learn More. This file was created with democratiz3D. Automatically create 3D printable models from CT scans. Learn more. MRI, t2, t1 STIR, lumbar, spine, diaphragm, psoas, muscle, kidney, ligaments, anterior, posterior, transverse, spinous, apophysis, medulla, spinal, fluid, scoliosis, rectification, joints, disc, interverterbral, without, contrast, iliac, bone, crest, sacroiliac, joint,

    Free

  6. shunt1

    disc 2

    Version 1.0.0

    5 downloads

    MRI, without, contrast, t2, lumbar, sacrum, coccyx, spine, 3d, model, printable, psoas, muscle, nerves, aorta, iliac, common, internal, external, gluteus, sacroiliac, joint, rectum, pelvis bone, acetabulum, femur, head, neck, body, transverse, spinous, apophysis, disc, intervertebral, foramen, anterior, posterior, ligaments, Thecal sac, Intervertebral foramen, Zygapophyseal joint, , Posterior vertebral arch (lamina) Inferior articular process, Paraspinal fatty tissue, Supraspinous ligament, Erector spinae muscle, lordosis, psoas,

    Free

  7. Giulia

    sample2

    Version 1.0.0

    0 downloads

    sample, lumbar, spine, T2, without, contrast, coronal, sacrum, intervertebral, disc, colon, rectum, mesenteric, iliac, aorta, pedicles, bone, muscles, .stl, 3d, model, printable,

    Free

  8. Giulia

    sample

    Version 1.0.0

    0 downloads

    sample, lumbar, spine, T2, without, contrast, coronal, sacrum, intervertebral, disc, colon, rectum, mesenteric, iliac, aorta, pedicles, bone, muscles, .stl, 3d, model, printable,

    Free

  9. Giulia

    sample

    Version 1.0.0

    0 downloads

    sample, lumbar, spine, T2, without, contrast, coronal, sacrum, intervertebral, disc, colon, rectum, mesenteric, iliac, aorta, pedicles, bone, muscles, .stl, 3d, model, printable,

    Free

  10. Giulia

    sample

    Version 1.0.0

    1 download

    sample, lumbar, spine, T2, without, contrast, coronal, sacrum, intervertebral, disc, colon, rectum, mesenteric, iliac, aorta, pedicles, bone, muscles, .stl, 3d, model, printable,

    Free

  11. Giulia

    sample2

    Version 1.0.0

    0 downloads

    sample, lumbar, spine, T2, without, contrast, coronal, sacrum, intervertebral, disc, colon, rectum, mesenteric, iliac, aorta, pedicles, bone, muscles, .stl, 3d, model, printable,

    Free

  12. Giulia

    sample

    Version 1.0.0

    1 download

    sample, lumbar, spine, T2, without, contrast, coronal, sacrum, intervertebral, disc, colon, rectum, mesenteric, iliac, aorta, pedicles, bone, muscles, .stl, 3d, model, printable,

    Free

  13. Ted365

    Head

    Version 1.0.0

    1 download

    Healthy head Lateral ventricle (frontal horn), Circular sulcus of insula, Head of caudate nucleus, Lateral sulcus, Internal capsule (anterior limb), Precentral gyrus, Cave of septum pellucidum, Central sulcus, Globus pallidus, Postcentral gyrus, Insula, Cisterns, Fornix (column), Interventricular foramen (foramen of Monro), Third ventricle, Claustrum, Thalamus, Putamen, Superior temporal gyrus, Extreme capsule, Internal cerebral vein, External capsule Tail of caudate nucleus, Choroid plexus in trigone of posterior horn of lateral ventricle, great cerebral vein, Corpus callosum, splenium, Straight sinus Middle temporal gyrus, Parieto-occipital sulcus, Parietal bone, Occipital gyri, Cuneus, Striate cortex, cerebellum

    Free

  14. vasanc

    AX FSE file femur

    Version 1.0.0

    2 downloads

    I downloaded this file from the DICOM server. I wanted to go through the process of conversion from DICOM to STL. MRI, knee, stl, axial, condyles, tibia, T2, without, contrast, printable

    Free

  15. albergone

    teste

    Version 1.0.0

    13 downloads

    teste de aqrvivos, Erector spinae muscle (spinalis muscle), Lumbar vertebral body, Thoracolumbar fascia, Inferior vena cava, Spinal branch of lumbar artery (dorsal branch), Posterior intercostal artery, Spinal ganglion L2, Intervertebral disk L3/L4 (nucleus pulposus), Posterior vertebral arch (lamina), Ligamentum flavum, Intervertebral foramen, Superior articular process, Inferior articular process, Zygapophyseal joint, Promontory of sacrum, Multifidus muscle, Sacrum (S1), Gluteus maximus muscle, MRI, with contrast, stl, T1, t2, sagittal, axial, kidney,

    Free

  16. dzid_

    Knee

    Version 1.0.0

    3 downloads

    MRI, Patellar ligament, Patella, Retropatellar cartilage, Femoropatellar joint, Lateral patellar retinaculum, Medial patellar retinaculum, Vastus lateralis muscle, Femur, Iliotibial tract, Gastrocnemius muscle (medial head, tendon), Popliteus muscle (tendon), Adductor magnus muscle, Gastrocnemius muscle (lateral Head), Great saphenous vein, Superior lateral genicular artery and vein, Superior medial genicular artery and vein, Biceps femoris muscle, Sartorius muscle, Femoral artery and vein, Saphenous nerve, Common fibular (peroneal) nerve, Gracilis muscle (tendon), Perforating artery of deep artery ofthigh, Semimembranosus muscle, Tibial nerve, Semitendinosus muscle

    Free

  17. mmeskes

    hand-bone-3files

    Version 1.0.0

    7 downloads

    hand-bone-3files MRI, T1, without contrast, Distal phalanx I , proper palmar digital arteries and nerves, Proximal phalanx I (head) Lumbrical muscles, Flexor pollicis longus muscle, Proximal phalanx V (base), Adductor pollicis muscle, Metacarpal V (head), Proximal phalanx I (base), Flexor digitorum profundus, Sesamoid bone, Opponens digiti minimi muscle, Metacarpophalangeal joint I, Flexor digiti minimi muscle, Joint capsule, Abductor digiti minimi muscle, Adductor pollicis muscle, Hamate (hook), Interosseus muscle, Pisohamate ligament, Flexor pollicis brevis muscle, Radiate carpal ligament, Opponens pollicis muscle, Pisiform, Metacarpal I, Ulnar collateral ligament of wrist joint, Carpometacarpal joint I, Lunate, Trapezium , Palmar ulnocarpal ligament, Scaphoid, Radius, Extensor pollicis brevis muscle, Pronator quadratus muscle, Palmar radiocarpal ligament, Radial artery, t2, 3D

    Free

  18. Mike_0983

    10

    Version 1.0.0

    2 downloads

    10, Patellar ligament, Patella, Retropatellar cartilage, Femoropatellar joint, Lateral patellar retinaculum, Medial patellar retinaculum, Vastus lateralis muscle, Femur, Iliotibial tract, Gastrocnemius muscle (medial head, tendon), Popliteus muscle (tendon), Adductor magnus muscle, Gastrocnemius muscle (lateral Head), Great saphenous vein, Superior lateral genicular artery and vein, Superior medial genicular artery and vein, Biceps femoris muscle, Sartorius muscle, Femoral artery and vein, Saphenous nerve, Common fibular (peroneal) nerve, Gracilis muscle (tendon), Perforating artery of deep artery ofthigh, Semimembranosus muscle, Tibial nerve, Semitendinosus muscle, t2

    Free

  19. Mike_0983

    25

    Version 1.0.0

    2 downloads

    25, Patellar ligament, Patella, Retropatellar cartilage, Femoropatellar joint, Lateral patellar retinaculum, Medial patellar retinaculum, Vastus lateralis muscle, Femur, Iliotibial tract, Gastrocnemius muscle (medial head, tendon), Popliteus muscle (tendon), Adductor magnus muscle, Gastrocnemius muscle (lateral Head), Great saphenous vein, Superior lateral genicular artery and vein, Superior medial genicular artery and vein, Biceps femoris muscle, Sartorius muscle, Femoral artery and vein, Saphenous nerve, Common fibular (peroneal) nerve, Gracilis muscle (tendon), Perforating artery of deep artery ofthigh, Semimembranosus muscle, Tibial nerve, Semitendinosus muscle, t2

    Free

  20. ori19700

    Mein Knie Mrt

    Version 1.0.0

    3 downloads

    Mein Knie heute, Patellar ligament, Patella, Retropatellar cartilage, Femoropatellar joint, Lateral patellar retinaculum, Medial patellar retinaculum, Vastus lateralis muscle, Femur, Iliotibial tract, Gastrocnemius muscle (medial head, tendon), Popliteus muscle (tendon), Adductor magnus muscle, Gastrocnemius muscle (lateral Head), Great saphenous vein, Superior lateral genicular artery and vein, Superior medial genicular artery and vein, Biceps femoris muscle, Sartorius muscle, Femoral artery and vein, Saphenous nerve, Common fibular (peroneal) nerve, Gracilis muscle (tendon), Perforating artery of deep artery of thigh, Semimembranosus muscle, Tibial nerve, Semitendinosus muscle

    Free

  21. Annabelle

    spine 2

    Version 1.0.0

    2 downloads

    spine, MRI, t2, lumbar, spine, sacrum, aorta, abdominal, disc, bulging, paraespinal, muscles, retroperitoneum, without contrast

    Free

  22. Version 1.0.0

    6 downloads

    seal brain, t2, mri, without contrast, head, brain, seal, coronal, cortex, lateral, ventricle, third, trunk, cerebellum, veterinary, talamus, vermis, without contrast

    Free

  23. Annabelle

    spine5

    Version 1.0.0

    1 download

    another spine

    Free

  24. Alexander Hill

    LowerHalf

    Version 1.0.0

    4 downloads

    lower half knee, mri, fat sat, T2

    Free

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