Dear Editor,
The holographic technique is an emerging tool for medical and its associated applications.
This technique provides imaging of bone, tissue, ophthalmology, otology, dentistry,
urology and pathology. A hologram provides a non-contact three dimensional (3D) image
that can be seen with the naked eye. These 3D images provide details of the human
anatomy and activity of an internal organ of the body in high resolution. The capabilities
of holography are used for measuring purpose. This image processing tool hasan extensive
application in various medical fields like orthopaedics. Mostly, X-ray holography
is used for an aqueous solution. In orthopaedics, it is an excellent tool for contactless
study, which is used to measure the external fixture of the fractured bone. Doctors
can see the patient in holography image without the physical presence of the patient.[[1]]
Dennis Gabor coined holography in 1948 and was honoured with Nobel Prize for this
work. In 1962, the development of the recorded 3D object had been done, which allows
displaying the required static object. Holography involves providing the whole picture
in a 3D form, which allows a person to look around and behind its subject. Currently,
this technology is being improved further, and humans can see a 3D object without
any requirement of 3D glasses. Holography is a two-step process. In the first step,
it records a hologram in which a radiographic image is converted into a photographic
record. The second step is to convert hologram into a virtual image. Holographic technology
provides real-world applications. It subsequently projects light to create a faithful
3D representation of the human body. In medical imaging, this technology creates dramatic
improvement. It improves computer tomography (CT), magnetic resonance imaging (MRI)
and two dimensional (2D) scan. This technology provides an intriguing novelty in medical
diagnosis, image resolution, treatment, information sharing and planning. An orthopaedic
surgeon can use this technology for accomplishing complex surgery. It is also applicable
for the planning of cardiac and liver surgery.[[2]] Holography is also used in Industrial fourth revolution which is commonly known
as Industry 4.0.
Holography is linked to imaginary as it provides a virtual environment. By using this
technology, a radiologist becomes more informative and easily addresses the complex
issue of image storage. This technology rapidly increases electronic storage, and
a vast amount of information can now be stored in the hospital. It can easily display
body structure 3D, having superior visual capabilities. In radiology, holography is
used for the better treatment of disease, diagnosis and injury. It is helpful for
training, protection and safety rather than the CT and MRI image. Using this technology,
one can understand the vascular anatomy, cranial nerves, renal, skull base and pelvic
anatomy. It is the best technique to visualise intricate details of the anatomical
structure.[[3]] [[Figure 1]] shows the process as used in capturing holography.
Figure 1: Process used in holography
This technology can create endless applications, such as planning, education, safety,
security and research.[[4]] Other holography applications are gaming, movie, better communication, advertising
and training. Holography is also available for non-destructive testing in laboratories.
Its applications are applied in automobile, aircraft, telecommunications, television
computing and scanning of different assemblies. In industrial applications, it is
used in quality control and fracture testing in production.
Holography is an excellent tool to study an orthopaedic structure and measure strains
on fixations of pins and rods. It is a contactless tool offering an excellent study
on an external fixture being used in a bone fracture and determine the piezoelectric
coefficient of human bone.[[5]] This technology may revolutionise healthcare for accurate human skeletons, organs,
muscle, veinsand vessels. A doctor/surgeon can plan operations and discuss the operating
procedures as shown in [[Figure 2]].
Figure 2: Working of holography in orthopaedics
From [[Figure 2]], doctors/surgeon can see the images of hard tissue of the human body by using holography
beam of the patient. There are lucrative growth opportunities by holographic technology,
such as live imaging, disease informationand visibility of live organ in an effective
manner. This technology completely displays 3D homographic orthopaedics data. From
an original object, it provides the original shape and size object with a multiangular
view.[[6]] It successfully shows patient-specific orthopaedics data, and we observe that it
is helpful for spine surgery, trauma, prosthetic, joint replacement and reconstruction
of complex maxillofacial and calvarial defects. This technology provides better information
about bone, tissue, osteochondral and chondral defects, planning of surgery, cost-effectiveness
for orthopaedics, surgical training and improves patient care.
Holography helps the surgeon by the low cost of planning and improves patient outcome.
In medical, a hologram is used to test breath, blood, saliva and urine. It is applicable
to test glucose, hormones, bacteria, drugsand alcohol. Thus, to create a ‘holographic
image’, an image is captured, and then it is processed to make a ‘stereogram’. A hologram
image is recorded through a reference beam and projected beam in space. Holography
is a recording of a light image formed by lens without any aid of special glasses
or other optics. It uses laser light to complete hologram from the actual object and
record complex data with the original reference beam.[[1]]
This technology is applicable in teaching and learning, as it provides efficient performance
as compared to traditional book images. By using this technology, the teacher can
clearly show body metabolisms. It has superior visual capabilities and provides 3D
imaging of many anatomical structures that are difficult to conceptualise. This technology
has a superior capability to store patient data digitally in a 3D format, which can
further be analysed. It can record thickness rather than the just surface.[[7]] In the upcoming years, it will become commercially viable to perform treatment
of complex cases in orthopaedics.
Holography has great potential to transform radiology into virtual reality (VR). It
addresses the challenge of storing the complex issue of 3D image storing of the patient.
In hospitals, patient diseases/bone fracture/other information can be stored digitally.
It is used for external recording using an external reference beam to reconstruct
an image.[[8]] This technology is also used for industrial testing.
The main limitation of this technology is the requirement of a complicated method
to record holographic images and the requirement of higher skill sets. Holography
does not produce images of complex movement. Many people are unfamiliar with this
technology and the adoption of holographic storage.
In future, holography seems a useful technology to design artificial bone, limbs and
joints. It is useful in areas such as industry, commerce and scientific research.
Doctors can use 3D holography to undertake measurement without invasive surgery.[[9]] Medical professionals can cut virtual tissue and organs in various angles to create
unlimited cross-sections. In upcoming years, it the best approach to identify the
growth of abnormal tissue. Holography may emerge as disruptive 3D imaging to impact
a different aspect of life and can be a game-changer in medical industries.[[10]]
In the future, holography will help doctors for analysis of patient orthopaedics conditions,
their causesand prediction. The patient-specific surgical procedure will be performed
easily using examined data along with better user information. In upcoming years,
it will become efficient technology for decision-making, solving a complicated problem
and creating innovation in orthopaedics.
Holography is a useful technology to store the data of a patient, which is quite helpful
in training and research. This innovative technology designs an image in a 3D format.
It is clinically reliable by which new and old record is used to watch the progress
of the patient. It allows the surgeon to plan the procedure of complicated surgery,
such as the spine. A hologram can be used as a powerful microscope to observe individual
cells of patients. In orthopaedics, holography produces 3D images of bones with sizeable
focal depth and will create unlimited benefits in the future. No doubt, it can be
used with artificial intelligence (AI) for solving patients’ problems.
