Beyond the Scan: Dr. Harish Nagaraj’s Mission to Make Advanced Cancer Care a Reality for Africa

From a humble background to the forefront of Nuclear Medicine and theragnostic in Kenya, Dr. Harish Nagaraj is helping build a future where advanced cancer diagnosis and targeted treatment are closer to the patients who need them most.

There are some moments in medicine that cannot be measured by a laboratory result alone.

A number can show that a disease is responding.

An image can show that a tumor is shrinking.

A scan can reveal what the human eye cannot see.

But sometimes, the most powerful measure of medical impact is much simpler.

It is seeing someone walk again.

For Dr. Harish Nagaraj, one such moment came after a patient with advanced metastatic prostate cancer underwent Lutetium-177 PSMA therapy at Kenyatta University Teaching, Referral and Research Hospital (KUTRRH).

The patient arrived at the hospital in a wheelchair, carrying the physical burden of advanced cancer and, perhaps just as painfully, the uncertainty of what would come next.

Then came treatment.

His prostate-specific antigen, or PSA, dropped significantly. More importantly, he regained his mobility.

And when his family saw the change, they did not respond with medical terminology.

They said something far more profound:

“I have my dad back.”

For Dr. Nagaraj, those words captured the reason behind years of training, research, service development and persistence.

“Moments like that remind me that behind every scan, every tracer, and every therapy dose, there is a human life and a family waiting for hope,” he says.

That sentence is perhaps the best way to understand the work of a physician whose profession is deeply rooted in technology but whose motivation remains profoundly human.

Dr. Nagaraj is a dual-specialized consultant in Radiology and Nuclear Medicine and a Theranostics specialist. He serves as Head of Nuclear Medicine and is in charge of the Integrated Molecular Imaging Centre at KUTRRH. KUTRRH's current professional listing identifies him as Head of Department – Nuclear Medicine/PET/CT.

But titles only tell part of the story.

He describes himself in simpler terms:

“A clinician, teacher, and builder of systems.”

Outside the Integrated Molecular Imaging Centre (IMIC), Dr. Harish Nagaraj represents a new generation of African specialists building world-class cancer care from within the continent.

And it is that final description builder of systems that perhaps best explains why his work belongs in Global Changemakers Chronicles.

Because his story is not simply about becoming a doctor.

It is about helping build something that did not fully exist before.

It is about making sophisticated cancer diagnosis and treatment increasingly available within Kenya.

It is about training others to carry the work forward.

And it is about challenging the idea that the most advanced healthcare must always be found somewhere else.

A Journey That Was Not Perfectly Planned

Long before PET/CT machines, molecular imaging and targeted radionuclide therapies became part of his professional vocabulary, Dr. Nagaraj was simply a young man trying to understand where his abilities could make a difference.

He comes from a humble background and is the first-generation doctor in his family.

His journey, he explains, “was not perfectly planned from the beginning.”

That admission is important.

In a world where professional success is often presented as a straight-line school, university, specialization, achievement Dr. Nagaraj's account is more relatable.

It was a process.

A process of discovering himself.

Understanding his strengths.

Reflecting on where he could create meaningful impact.

And eventually finding medicine as the field through which those strengths could be put to work.

His path led him to the University of Nairobi, where he pursued specialization in Diagnostic Imaging and Radiation Medicine.

There, something began to change.

He started appreciating imaging not merely as a technical tool, but as an instrument that could fundamentally transform patient care.

Imaging could help doctors diagnose diseases earlier.

It could help determine how far a disease had progressed.

It could improve treatment planning.

And, crucially, it could help doctors make decisions based on what was actually happening inside a patient's body.

Yet the deeper Dr. Nagaraj went into medical imaging, the more he became fascinated by a question that conventional anatomical imaging could not always answer:

What is the disease actually doing?

That question drew him toward Nuclear Medicine.

When Medicine Goes Beyond What the Eye Can See

Dr. Harish Nagaraj operating advanced molecular imaging equipment at the Integrated Molecular Imaging Centre (IMIC), where precision medicine is helping transform cancer diagnosis and treatment in Kenya.

To understand Dr. Nagaraj's work, it helps to understand what makes Nuclear Medicine different.

Traditional medical imaging can provide remarkable pictures of the body's structures.

Nuclear Medicine adds another dimension: function and biology.

Instead of only asking what an organ or tumor looks like, molecular imaging can help physicians understand what is happening at the cellular or molecular level.

A radioactive tracer is introduced into the body. The tracer is designed to participate in or bind to a particular biological process. Imaging equipment can then detect where that tracer accumulates.

In simple terms, it can help doctors see the behavior of disease, not just its shape.

That is why Dr. Nagaraj says Nuclear Medicine “goes beyond anatomy.”

It allows physicians to see “biology, function, receptors, metabolism, and disease activity.”

For someone unfamiliar with the field, this may sound highly technical.

But the practical implication is easier to understand.

Imagine a doctor trying to determine whether cancer has spread, where it has spread, whether a treatment is working, or whether a suspicious area represents active disease.

The more precisely the disease can be identified, the more precisely treatment decisions can be made.

That is where molecular imaging becomes powerful.

At KUTRRH's Integrated Molecular Imaging Centre, PET/CT and SPECT/CT are among the technologies used to support diagnosis, staging, treatment planning and monitoring. KUTRRH says its PET/CT service combines metabolic information from PET with anatomical information from CT, allowing clinicians to identify areas of abnormal biological activity.

For Dr. Nagaraj, however, the goal is not simply to operate sophisticated machines.

It is to connect imaging, biology, radiopharmaceutical science and treatment into one patient-centered pathway.

That is the difference between possessing technology and creating meaningful innovation.

From Seeing Cancer to Targeting It

The next part of Dr. Nagaraj's work takes the idea of precision even further.

It is called theragnostic.

The word combines “therapy” and “diagnostics.”

At its heart is a relatively simple idea: first identify a biological target associated with a disease, then use a related targeted compound to deliver treatment to that target.

In cancer care, this can allow clinicians to identify patients whose tumors carry particular molecular features and, where appropriate, use a targeted radioactive treatment against those cells.

One example is Lutetium-177 PSMA therapy, which has become particularly important in advanced prostate cancer.

PSMA stands for prostate-specific membrane antigen, a protein found at high levels on many prostate cancer cells. In this therapy, Lutetium-177 is attached to a molecule that can seek out PSMA-expressing cancer cells. The radioactive component can then deliver radiation to those targeted cells.

This is not simply “radiation” in the broad sense.

The goal is precision.

KUTRRH describes Lutetium-177 PSMA as a targeted radiation therapy for advanced prostate cancer and says the treatment is now available at the hospital, reducing the need for patients to travel internationally for this type of care.

And that is where the technological story becomes a story about access.

Because the question is not only:

Can this treatment work?

It is also:

Who gets to receive it?

The Bigger Question: Who Gets Access to Innovation?

Every patient has a story. Dr. Harish believes advanced cancer care should be accessible to everyone, regardless of geography or income.

For Dr. Nagaraj, this is one of the central questions of his career.

He is motivated by what he calls “the possibility of changing a patient's story.”

In oncology, he knows that accurate diagnosis and timely treatment can mean the difference between despair and hope.

But access to advanced cancer care has historically been unequal.

For patients with the financial resources to travel, sophisticated services may be available in other countries.

For patients without those resources, the situation can be very different.

Dr. Nagaraj does not believe geography should decide who receives advanced healthcare.

“I am driven by the belief that advanced cancer care should not be available only to those who can travel abroad or pay privately,” he says. His purpose, he explains, is to help make world-class molecular imaging and targeted radionuclide therapy accessible within the region, particularly through public-private healthcare systems.

That is an ambitious objective.

And it requires much more than one doctor.

It requires infrastructure.

It requires radiopharmaceuticals.

It requires highly trained technologists, physicians, medical physicists, radio pharmacists, nurses and other professionals.

It requires radiation safety.

It requires quality assurance.

It requires referral systems.

It requires financing.

And it requires patients and clinicians to understand what these technologies can do.

That is why Dr. Nagaraj's work extends beyond the consultation room.

The Work Behind the Technology

Beyond the clinic, Dr. Harish regularly shares knowledge with fellow healthcare professionals, strengthening cancer care through education and scientific collaboration.

His responsibilities span PET/CT, SPECT/CT, radiopharmaceutical services, radionuclide therapies, Lutetium-177 PSMA and DOTATATE therapy, Iodine-131 therapy, clinical reporting, patient selection, treatment planning and response assessment.

But the list does not end there.

He is also involved in service development, workflow planning, radiation safety coordination, protocol development, quality improvement, training and building referral pathways.

He participates in multidisciplinary cancer care and teaches Nuclear Medicine to postgraduate trainees in Radiology and Radiation Oncology at the University of Nairobi.

He also participates in tumor boards, academic discussions, research and professional advocacy for precision oncology in Kenya.

In other words, the work is simultaneously clinical, educational, scientific and institutional.

And this is one of the most important lessons hidden within his story:

Innovation does not happen because a machine arrives.

It happens when people build the systems necessary to make that machine useful.

Dr. Nagaraj learned this through experience.

“My journey has taught me that innovation is not only about technology; it is about people, systems, access, and sustainability,” he says.

That statement could apply far beyond Nuclear Medicine.

It could apply to almost every attempt to solve a difficult problem in Africa.

A new machine without trained people cannot achieve its potential.

A brilliant medical technology without financing cannot reach patients.

A treatment without safety systems can create danger.

A service without referral pathways can remain underused.

And a healthcare innovation without patient trust may never achieve its intended impact.

That is why, as Dr. Nagaraj puts it, “A PET/CT scanner or cyclotron alone is not enough.” What is needed around the technology includes trained staff, a safety culture, quality assurance, referral pathways, reimbursement and patient trust.

Building While the System Is Still Growing

Dr. Harish Nagaraj with members of the nuclear medicine team during a specialized procedure, highlighting the collaboration and advanced technology driving precision cancer care.

Creating advanced Nuclear Medicine services in a developing healthcare environment is not easy.

Dr. Nagaraj identifies infrastructure, trained workforce, radiopharmaceutical supply chains and awareness as some of the major challenges.

Some consumables and spare parts are manufactured outside the country, meaning delays in shipping can interrupt services if planning is not done early.

Then there is affordability.

Theragnostic treatments can be expensive, and Dr. Nagaraj points to the challenge of therapies that are not yet covered under the Social Health Authority.

This creates a difficult contradiction.

The science may exist.

The expertise may exist.

The equipment may exist.

But a patient may still struggle to access treatment because the financing mechanism has not caught up with the innovation.

This is where healthcare innovation becomes a policy question.

It is also where Dr. Nagaraj's personal ambitions extend beyond medicine.

One of the skills he says he would still like to develop further is stronger leadership and health policy skills, because he wants to help translate medical innovation into sustainable national healthcare programmes.

That is revealing.

A doctor who is already deeply involved in advanced medical care is thinking beyond the next patient.

He is thinking about the system.

How can an innovation become sustainable?

How can it be integrated into national healthcare?

How can more patients benefit?

How can the country train enough specialists?

How can financing mechanisms keep pace with scientific advancement?

These questions demonstrate that the future of healthcare is not going to be solved by medicine alone.

It will require medicine, science, policy, leadership and economics to work together.

From Individual Patients to a Regional Ecosystem

Working alongside colleagues across Africa to advance precision oncology and strengthen regional partnerships in cancer care.

One of Dr. Nagaraj's greatest contributions may ultimately be measured not by the number of scans he has interpreted or treatments he has administered, but by the systems and people that continue after him.

He believes his work has contributed to expanding access to precision oncology, molecular imaging and theragnostic in Kenya and the wider region.

Through PET/CT and SPECT/CT, patients can receive advanced imaging for staging, treatment planning, monitoring and recurrence detection locally rather than necessarily travelling abroad.

The introduction and expansion of tracers including FDG, PSMA, DOTANOC, FAPI and CA IX have also opened opportunities for more disease-specific imaging, including for prostate cancer, neuroendocrine tumours and renal cell carcinoma.

These may sound like complicated medical terms.

But their significance is straightforward:

The more specifically doctors can see disease, the better they can understand what they are treating.

And the more accurately they can understand the disease, the greater the potential for personalized treatment decisions.

KUTRRH has described its Integrated Molecular Imaging Centre as a facility supporting advanced cancer diagnosis and treatment through technologies including PET/CT and SPECT, with a wider goal of improving access to specialized care.

International recognition reinforces Kenya's growing role in molecular imaging and theragnostic, with Dr. Harish contributing to globally recognized standards of cancer care.

The hospital has also been accredited as an ICPO Clinical Theragnostic Centre of Excellence, a development it describes as supporting its role in advanced personalized cancer care and regional training.

For Dr. Nagaraj, however, the ambition goes further.

He wants Kenya to become not merely a service hub, but “a regional training and research Centre of excellence for molecular imaging and theragnostic in Africa.”

That vision changes the narrative.

Kenya is no longer simply the place where African patients come to receive technology developed elsewhere.

It can become a place where professionals are trained.

Where research is conducted.

Where new ideas are tested.

Where knowledge is shared.

And where medical innovation can be developed in response to African realities.

The Patient Who Brought the Mission Into Focus

It is easy, when discussing advanced healthcare, to get lost in terminology.

PET/CT.

SPECT/CT.

Radiopharmaceuticals.

PSMA.

DOTATATE.

FAPI.

Theragnostic.

But Dr. Nagaraj's most memorable experience cuts through all of that.

The man in the wheelchair.

The advanced prostate cancer.

The treatment.

The falling PSA.

The return of mobility.

And the family saying:

“I have my dad back.”

The words are powerful because they reveal what medicine is actually trying to achieve.

A doctor may measure response through clinical and biochemical indicators.

But a family measures it through life.

Can he walk?

Can he come home?

Can he sit with his children?

Can he return to the things he once did?

Can the family see the person they love rather than only the disease?

For Dr. Nagaraj, seeing that patient regain mobility was one of the strongest reminders of why the work matters.

It also reinforces an important lesson for young scientists and innovators: impact should ultimately be connected to people.

The goal cannot be the technology itself.

The goal is what the technology makes possible.

A Doctor Who Sees Teaching as Part of the Mission

There is another dimension of Dr. Nagaraj's work that deserves attention.

He is not only treating patients.

He is teaching.

That matters because a healthcare system cannot depend forever on one person.

If Kenya is to expand Nuclear Medicine and precision oncology, it needs more trained specialists.

More researchers.

More radio pharmacists.

More medical physicists.

More technologists.

More clinicians who understand when molecular imaging can change a patient's treatment pathway.

Teaching therefore becomes part of the changemaking process.

Every trainee who learns from an experienced specialist potentially carries that knowledge into another hospital, another department and another generation of patients.

This is how systems become sustainable.

And it is consistent with Dr. Nagaraj's belief that innovation requires people and systems not just technology.

The Lessons of Building Something New

The journey has also taught Dr. Nagaraj patience.

When someone attempts to build a new service, resistance is inevitable.

There are delays.

There are setbacks.

There are moments when progress may appear painfully slow.

But his lesson is not to interpret those obstacles as proof that the mission is impossible.

“When you are building something new, you must be ready for resistance, delays, and setbacks,” he says. “But if the purpose is clear, progress eventually follows.”

It is advice that reaches beyond medicine.

For a young researcher working on an innovation that nobody understands yet.

For an entrepreneur trying to solve a problem that seems too large.

For a student building something from limited resources.

For a journalist trying to create a publication from scratch.

The temptation is often to wait for perfect conditions.

More funding.

More experience.

More connections.

More equipment.

More recognition.

Dr. Nagaraj's philosophy is different.

Do not wait for perfect conditions.

Begin with what you have.

Build systems around you.

Learn continuously.

Work with humility.

And let the results speak.

The Human Being Behind the Doctor

Despite the technical complexity of his work, Dr. Nagaraj's sources of inspiration are deeply human.

He says he is inspired by patients who continue to fight despite difficult diagnoses and financial challenges.

He is grateful for family, mentors, colleagues, teachers and international collaborators who have helped build Nuclear Medicine services in resource-limited environments.

And he draws inspiration from Kenya itself.

The country's movement from limited access to PET/CT and theragnostic toward becoming a regional leader in molecular imaging gives him motivation.

Outside his professional responsibilities, he spends time with his family, reads about healthcare innovation, attends conferences and engages in conversations around leadership, systems building and personal growth.

He enjoys travelling, experiencing different cultures and staying connected to his roots.

And there is a place he hopes to visit someday: Japan.

His reason is telling.

He admires its discipline, innovation, culture and balance between tradition and modernity.

Those qualities also seem to mirror aspects of his own professional philosophy: learn from the past, embrace innovation, build carefully and remain grounded.

When asked to describe himself in three words, he chooses:

Purpose-driven. Resilient. Committed.

It is a simple description.

But his journey gives those words weight.

“Do the Right Thing, When No One Is Watching You”

There is one principle Dr. Nagaraj says he lives by:

“Do the right thing, when no one is watching you.”

For a physician, that principle carries particular significance.

Healthcare is built on trust.

Patients often meet doctors at moments when they are vulnerable, afraid and uncertain.

They may not understand every scan, treatment or medical decision.

They trust the professionals around them to act with competence and integrity.

But the principle also applies to changemaking more broadly.

Much of the work that transforms societies happens before anyone notices.

The researcher who spends years developing an idea.

The teacher who trains someone who will later change thousands of lives.

The doctor who works to establish a service before it becomes widely recognized.

The policymaker who pushes for a reform long before it becomes popular.

The journalist who tells stories before the world is paying attention.

Change often begins in obscurity.

And that is why Dr. Nagaraj's words are relevant to the mission of Global Changemakers Chronicles.

His Vision: A Future Where Healthcare Does Not Depend on Geography

Dr. Nagaraj's vision for the future is ambitious.

He wants Kenya to develop a strong, sustainable and equitable Nuclear Medicine and Precision Oncology ecosystem.

That means wider access to PET/CT.

Expanded theragnostic.

Stronger radio pharmacy capacity.

National training pathways.

More local research.

And better health financing mechanisms for targeted radionuclide therapies.

He also wants Kenya to become a regional training and research Centre of excellence for molecular imaging and theragnostic.

It is a vision that could change more than healthcare.

It could change how Africa sees its own capacity for innovation.

Because when advanced medical services become available locally, the benefit is not simply that patients avoid travelling.

Knowledge remains.

Professionals are trained.

Research grows.

Infrastructure develops.

Collaboration increases.

And the next innovation becomes easier to build.

That is how one service can become an ecosystem.

And that is how a doctor's work can become larger than the doctor.

The Real Meaning of Innovation

Dr. Harish Nagaraj's story is ultimately not a story about machines.

It is not even primarily a story about Nuclear Medicine.

It is a story about possibility.

The possibility that a patient with advanced cancer can receive sophisticated treatment without having to leave the region.

The possibility that a young Kenyan doctor can enter a highly specialized field and help develop it locally.

The possibility that public healthcare institutions can become center's of advanced medical innovation.

The possibility that technology can be combined with compassion to give families more time, more mobility and more hope.

And the possibility that Africa can move from being primarily a consumer of advanced medical knowledge to becoming a contributor, trainer, researcher and innovator in its own right.

That is why his message is so powerful.

“Advanced healthcare should not be a privilege of geography or wealth,” Dr. Nagaraj says. “Every patient, wherever they are born, deserves access to timely diagnosis, appropriate treatment, and hope.”

Then he adds a line that perhaps summarizes the entire philosophy behind his career:

“True innovation is meaningful only when it reaches the people who need it most.”

That is the difference between innovation as a technological achievement and innovation as a force for social change.

A machine can be impressive.

A new tracer can be scientifically exciting.

A treatment can be groundbreaking.

But if the people who need them cannot access them, the innovation remains incomplete.

For Dr. Nagaraj, the work is therefore not finished when the technology arrives.

It is finished only when the technology becomes meaningful in someone's life.

A Changemaker Beyond the Spotlight

There is a tendency to associate changemakers with people whose names dominate headlines.

But change does not always happen on a stage.

Sometimes it happens in a hospital department.

Sometimes it happens inside a laboratory.

Sometimes it happens in a classroom.

Sometimes it happens when a physician refuses to accept that a service must remain unavailable simply because it has historically been unavailable.

Dr. Nagaraj's story is a reminder that changemaking can be quiet, technical and deeply human at the same time.

He is building.

He is teaching.

He is treating.

He is learning.

He is advocating.

And he is helping create an environment in which future healthcare professionals may be able to do things that were difficult or impossible before.

His greatest achievement, therefore, may not be a single treatment.

It may be the ecosystem he is helping to build around that treatment.

And perhaps that is why his description of himself as a “builder of systems” is so significant.

Systems outlive individuals.

Knowledge passed to another professional continues.

A trained specialist trains someone else.

A referral pathway connects another patient to care.

A research programme produces another discovery.

A service established today becomes the foundation for something more advanced tomorrow.

That is how lasting change happens.

The Story Is Still Being Written

Sharing a vision for the future of precision oncology, Dr. Harish continues advocating for innovation, collaboration and equitable cancer care across Africa.

Dr. Harish Nagaraj's journey is far from finished.

There are still gaps in access.

There are still questions around financing.

There are still shortages of specialized personnel.

There are still supply-chain challenges.

There are still policies that need to evolve alongside medical innovation.

And there are still patients who need better options.

But perhaps the most important thing is that the direction is clear.

The future he envisions is one in which Kenya can become a Centre of excellence for molecular imaging and theragnostic, serving not only its own citizens but contributing knowledge and expertise to the wider African region.

His story is therefore not about arriving at the destination.

It is about building the road.

And for the young people watching from the sideline's students wondering whether they can become scientists, doctors, researchers, innovators or leaders his journey offers an important lesson.

You do not need perfect circumstances to begin.

You need purpose.

You need resilience.

You need commitment.

You need humility.

And you need the courage to keep building when the results are not immediately visible.

As Dr. Nagaraj puts it:

“Do not wait for perfect conditions to start contributing. Begin with what you have, build systems around you, and let your work speak through the patients whose lives are improved.”

Perhaps that is the most powerful lesson of all.

Because the future of African healthcare will not be built by one person.

It will be built by thousands of people who decide that what exists today does not have to be the limit of what is possible tomorrow.

And perhaps somewhere in that future will be another patient who walks into a hospital carrying fear and walks out carrying hope.

Another family that gets more time together.

Another young specialist who discovers a field and decides to build it.

Another innovation that moves from an idea to a treatment.

Another system that turns what once seemed impossible into something ordinary.

For Dr. Harish Nagaraj, that is the work.

To see beyond the scan.

Beyond the machine.

Beyond the diagnosis.

Beyond today's limitations.

And toward a healthcare future in which advanced medicine is not something Africans have to leave Africa to find.

GLOBAL CHANGEMAKERS CHRONICLES | THE SIGNATURE

Dr. Harish Nagaraj describes himself in three words:

Purpose-driven. Resilient. Committed.

The professional achievement he is most proud of is contributing to the growth of Nuclear Medicine in Kenya's public-private healthcare sector, including access to Lutetium-177 PSMA therapy at KUTRRH.

His personal principle is simple:

“Do the right thing, when no one is watching you.”

And his message to the world is even bigger:

“Advanced healthcare should not be a privilege of geography or wealth. Every patient, wherever they are born, deserves access to timely diagnosis, appropriate treatment, and hope. True innovation is meaningful only when it reaches the people who need it most.”

And in a world where innovation is often celebrated for how sophisticated it looks; his story reminds us to ask a more important question:

Who does it ultimately serve?

Dr. Harish Nagaraj has answered that question through a career devoted to bringing hope where it is needed most. By combining medical excellence with compassion and a vision for accessible cancer care, he is helping shape a future where more patients have a chance to receive the treatment they deserve.

His legacy will not be measured only by the technology he advances, but by the lives he touches, the hope he restores, and the future he is helping build.

Global Changemakers Profile

Name: Dr. Harish Nagaraj

Profession: Nuclear Medicine Physician & Molecular Imaging Specialist

Field of Impact: Nuclear Medicine, Molecular Imaging, Precision Oncology, Cancer Care Innovation, Medical Education & Healthcare Leadership

Featured On: 26 July 2026

Global Changemakers Chronicles celebrates individuals whose work creates lasting impact and inspires communities through innovation, leadership, compassion, and purpose. Through authentic storytelling, GCC highlights changemakers whose journeys demonstrate how expertise, vision, and service can transform lives and strengthen healthcare systems. Dr. Harish Nagaraj exemplifies this mission by advancing precision cancer care, expanding access to cutting-edge molecular imaging, mentoring future healthcare professionals, and helping shape a future where advanced cancer treatment is accessible to more people across Africa.