Medical image security: how to protect studies, access, and data in digital radiology

Digital radiology depends on images, reports, clinical data, remote access, storage, and result distribution. Every study that circulates within the institution contains sensitive information and must be available to authorized professionals while remaining protected against improper access, operational errors, or loss of availability.

For this reason, medical image security is not only about “blocking” information. It also means ensuring that studies, reports, and prior records are accessible at the right time, to the right people, and within a controlled workflow.

A secure radiology operation must balance three dimensions: confidentiality, integrity, and availability. If information is protected but cannot be accessed when needed, patient care is affected. If it is available without adequate controls, the risks to privacy, traceability, and institutional management increase.

In this context, protecting medical images means reviewing how studies are received, viewed, reported, stored, shared, and retrieved within the radiology ecosystem.

Why is security essential in digital radiology?

A diagnostic imaging institution works with sensitive information. Each study may include medical images, patients’ personal data, clinical information, reports, prior studies, identifiers, dates, users involved, and access logs.

When that information is not managed with appropriate controls, risks may include:

unauthorized access;
loss of traceability;
studies shared through uncontrolled channels;
users with excessive permissions;
reports sent to the wrong recipients;
difficulty retrieving historical studies;
interruptions in service availability;
dependence on manual processes;
unnecessary exposure of clinical data;
lack of control over who accesses, modifies, or distributes information.

Security in digital radiology must support the workflow. Protecting only the final storage location of a study is not enough if the information previously circulates through informal channels, access is not kept up to date, or actions are not recorded.

It is also important to understand that security is not the exclusive responsibility of the IT department. It involves leadership, diagnostic imaging, administration, medical professionals, technical teams, vendors, and users who participate in daily operations.

A strong strategy combines technology, internal processes, training, and clear access criteria.

Data security and radiation protection are not the same

In radiology, the word “security” can refer to different topics. Therefore, it is important to distinguish between radiation protection and digital medical image security.

Radiation protection

Radiation protection relates to the safety of patients, professionals, and the environment in relation to exposure to ionizing radiation.

It includes topics such as:

dose;
acquisition protocols;
justification of the study;
exposure optimization;
technical image quality;
proper use of equipment;
protection criteria for patients and professionals.

It is an essential topic in radiodiagnostics, but it is not the focus of this article.

Digital medical image security

Digital medical image security relates to protecting information within the technological environment.

It includes:

privacy;
confidentiality;
access control;
permissions;
authentication;
traceability;
storage;
availability;
integrity of studies and reports;
information recovery;
secure result distribution.

This article focuses on this second dimension: how to protect studies, reports, access, and data within a digital radiology operation.

Which information must be protected in a radiology workflow?

Security is not limited to the image archive. Different types of information participate in the radiology workflow and must be managed with control.

Medical images

Images are at the core of diagnostic imaging. They may come from different modalities, such as radiography, computed tomography, magnetic resonance imaging, ultrasound, mammography, or other diagnostic areas.

Protecting them means ensuring that they:

reach the appropriate system correctly;
are associated with the correct patient;
can be viewed by authorized users;
are not improperly modified;
are retained according to institutional policies;
are available when needed;
can be recovered in the event of a contingency.

>> To understand the role of PACS in image management, read What Is a PACS in Radiology and How Does It Transform Your Institution’s Operations?

Radiology reports

The report is a critical part of the diagnostic process. It contains the medical interpretation of the study and must remain linked to the corresponding images.

Protecting it means controlling:

who can draft it;
who can review it;
who can modify it;
how it is delivered;
how its issuance is recorded;
how it is linked to the study;
how versions or corrections are accessed, when applicable.

A secure reporting platform must facilitate professional work without losing control over information.

Patient data

Radiology studies include data that identifies the patient and links the exam to the patient’s clinical history.

This may include:

name;
document number or identifier;
date of birth;
medical record number;
study date;
modality;
exam information;
internal identifiers;
origin or request data.

If these data are managed incorrectly, identification errors, duplicate patient records, incorrectly associated studies, or incorrect deliveries may occur.

Historical studies

Prior radiology studies are essential for comparison, assessment of progression, and diagnostic continuity.

The security of historical studies requires:

retaining them in an organized manner;
retrieving them when needed;
protecting them against improper access;
preventing loss due to infrastructure failures;
defining archiving policies;
maintaining traceability of access and retrieval.

A historical study that exists but cannot be found or opened in a timely manner loses operational value.

Access and permissions

Not all users need to access the same information or perform the same actions.

Therefore, the institution must define permissions according to profiles, functions, and responsibilities.

For example:

radiologists;
technologists;
administrative staff;
referring physicians;
remote professionals;
support users;
system administrators;
patients or external users, when applicable.

Security depends on both technology and proper user management.

Events and traceability

Traceability makes it possible to know what occurred within the workflow.

It may include records of:

who accessed a study;
who issued a report;
who modified data;
who shared a result;
when a historical study was retrieved;
which user performed a critical action;
which errors or events were recorded.

Without traceability, the institution has less ability to audit processes, investigate incidents, or improve controls.

Security is not only confidentiality: availability and integrity also matter

A secure radiology operation must address three dimensions: confidentiality, integrity, and availability.

Confidentiality

Confidentiality means that information is accessible only to authorized people.

In radiology, this means controlling who can view images, reports, patient data, historical studies, and results.

Related measures include:

user profiles;
secure passwords;
authentication;
role-based permissions;
restriction of unnecessary access;
periodic user reviews;
action logging.

Confidentiality protects patient privacy and reduces the risk of improper exposure of clinical data.

Integrity

Integrity means that information must remain complete, correct, and free from unauthorized changes.

In radiology, integrity is critical because an incorrectly associated image, report, or data point can affect the diagnostic workflow.

The institution must ensure that:

studies are linked to the correct patient;
images are not improperly altered;
reports remain linked to the exam;
study data remains consistent;
corrections are controlled;
relevant events are recorded.

Integrity does not depend only on preventing attacks. It also depends on organized processes and well-managed data.

Availability

Availability means that authorized users can access information when they need it.

In radiology, lack of availability can affect:

study interpretation;
comparison with prior studies;
report issuance;
result delivery;
continuity of care;
response to emergencies;
service productivity.

Therefore, security should not be understood as a barrier that makes work more difficult. It must enable controlled but timely access.

Main risks to medical image security

Medical image security can be affected by technological, operational, and human risks.

Unauthorized access

This occurs when a person accesses information without appropriate permission.

It may result from shared credentials, weak passwords, active users who should no longer have access, or incorrect configurations.

Users with excessive permissions

A user may be authorized to enter the system but have more permissions than necessary for their role.

This increases the risk of inappropriate exposure, modification, or distribution of information.

The general rule should be to grant the access required to perform a function, and no more.

Loss of traceability

Without adequate logs, the institution may not know who accessed, modified, sent, or retrieved a study.

A lack of traceability makes auditing difficult and limits the ability to respond to incidents.

Studies shared through informal channels

Sending studies or reports through uncontrolled channels can expose sensitive information.

This risk may arise when the institution does not have a formal workflow for distributing results or when the official process is too slow for operational needs.

The solution should not be to block the flow of information, but to provide secure and traceable channels.

Availability failures

A system outage, network problems, storage errors, or lack of recovery mechanisms can prevent access to studies and reports.

In radiology, availability is part of security because the service requires continuity to support patient care.

Outdated infrastructure

Legacy systems, servers without sufficient capacity, or components that are difficult to maintain can increase operational risk.

Technology modernization must consider security, as well as continuity, support, and the ability to evolve.

Storage without clear policies

Storing studies without defined criteria can create disorganization, rising costs, and retrieval difficulties.

The institution must establish policies regarding:

what is stored;
for how long;
where it is retained;
who can access it;
how it is retrieved;
how it is protected;
what happens during a contingency.

Human errors or manual processes

Security can also fail because of everyday processes:

shared user accounts;
unnecessary downloads;
manual result delivery;
data entered twice;
permissions that are not reviewed;
files stored outside the official workflow;
lack of training.

For this reason, security must be designed around real operations, not only technical configuration.

How to protect access to studies and reports

Secure access is one of the pillars of medical image protection.

Profile-based user management

Each user should have a profile associated with their role.

For example, a professional who reports studies does not necessarily need the same permissions as an administrative user, a technologist, or a support manager.

Profile-based management helps organize access and reduce risks.

Role-based permissions

Permissions must answer specific questions:

who can view studies?
who can issue reports?
who can modify data?
who can share results?
who can manage users?
who can access historical studies?
who can download information?

Defining roles prevents all users from operating with broad permissions simply for convenience.

Authentication and access control

Authentication verifies a user’s identity before granting access.

The institution must evaluate mechanisms appropriate to its level of risk, type of operation, and internal policies.

It must also avoid insecure practices such as shared credentials or generic users without traceability.

Action auditing

Auditing does not mean distrusting the team. It means having the information needed to understand what happens within the workflow.

Auditing helps review:

access;
downloads;
modifications;
transmissions;
views;
errors;
relevant events.

These records can support security, quality, management, and process improvement.

Periodic review of active users

Users and permissions should not be configured once and then forgotten.

The institution should periodically review:

inactive users;
professionals who changed roles;
excessive permissions;
temporary access;
support accounts;
external users;
administrative profiles.

An active account without a legitimate need can become a risk.

PACS security: what should an institution evaluate?

The PACS plays a central role in medical image security because it brings together the receipt, visualization, organization, and distribution of studies.

Secure viewer access

The viewer must allow authorized users to access the images they need without exposing unnecessary information.

The institution must evaluate:

access profiles;
viewer availability;
traceability of access;
download controls;
access to historical studies;
a secure and efficient user experience.

A secure system must also be usable. If official access is overly complex, teams may end up looking for insecure workarounds.

Activity logging

The PACS should record relevant actions within the workflow.

These records help identify:

which users accessed studies;
when information was accessed;
which events occurred;
how studies were distributed;
which errors or failures arose.

Traceability strengthens management and facilitates internal audits.

Integration with other systems

Security also depends on how the PACS integrates with other platforms in the radiology workflow.

A poorly managed integration can create duplicate data, identification errors, or unnecessary access.

>> To learn more about this topic, read Interoperability in Radiology: How to Connect PACS, Reports, Images, and External Systems Without Duplicating Tasks.

Protection of historical studies

The PACS must facilitate controlled access to prior studies.

The institution must evaluate whether prior studies can be retrieved securely, quickly, and traceably.

It must also consider how older studies, external files, or information stored in different environments are managed.

Continuity during failures

PACS security also includes the ability to maintain operations during incidents.

The institution should ask:

what happens if the system is unavailable;
how critical studies are accessed;
what backup is available;
which procedures are activated;
who communicates the incident;
how operations are restored.

Continuity must be planned before a failure occurs.

>> If your institution is evaluating a new platform, also read How to Choose a PACS for Radiology: 12 Key Criteria to Avoid Mistakes.

Security in radiology reporting and remote work

Security does not end when a study reaches the PACS. It must also support the creation, review, and delivery of the report.

Controlled remote access

Remote work can improve specialist availability and reduce turnaround times, but it must be managed with appropriate controls.

The institution must evaluate:

who can report remotely;
from which environments they access the system;
how they authenticate;
which studies they can view;
how their activity is recorded;
how information is protected during access.

The objective is to enable flexibility without losing control.

Report protection

The radiology report must remain protected from creation through delivery.

This means controlling:

editing;
review;
approval;
signature;
corrections;
distribution;
subsequent access.

It must also remain linked to the corresponding images.

Task distribution among professionals

When studies are distributed among different professionals, sites, or teams, security must accompany the assignment process.

The institution must know:

who received each study;
its priority;
which actions were performed;
when the report was issued;
whether it was reviewed or corrected;
how the result was delivered.

Efficient distribution must also be traceable.

Secure result delivery

Results must reach authorized recipients through controlled channels.

When informal methods are used, the risk of losing control, sending information to the wrong recipient, or exposing sensitive data increases.

A digital workflow must facilitate delivery while also recording events and respecting permissions.

>> To learn more about report management, read What Is a Radiology Reporting Center and How Can It Increase Productivity Without Compromising Diagnostic Quality?

>> You can also read Teleradiology and Remote Reporting: How to Reduce Turnaround Times with a Reporting Center Integrated with the PACS.

Security and cloud-based medical image storage

The growth of the radiology archive requires many institutions to review their storage strategy.

The cloud can be part of that strategy, but it must be evaluated according to security, availability, and management criteria.

Storage policies

The institution must define rules regarding:

which studies are stored;
for how long;
with what priority;
how they are archived;
how they are retrieved;
who can access them;
which records are retained;
how historical studies are managed.

Without clear policies, storage can grow in a disorganized manner.

Retrieval of historical studies

The value of storage lies not only in saving information, but in retrieving it when needed.

This is especially important in radiology because prior studies may be needed for comparison, follow-up, and diagnostic continuity.

A secure workflow must allow historical studies to be retrieved in a controlled manner without depending on manual searches or informal processes.

Availability and scalability

Storage must keep pace with the growth in study volume.

The institution must evaluate:

monthly growth;
modalities that generate the greatest volume;
frequency of historical study access;
retrieval times;
environment availability;
future needs;
expansion costs.

Security also means preventing archive growth from affecting operations.

The difference between storage, backup, and disaster recovery

These concepts are not equivalent.

Storage refers to where studies are retained.

Backup means maintaining copies intended to recover information after certain incidents.

Disaster recovery defines how operations are restored following a significant interruption.

Having images in the cloud does not automatically mean having a complete backup or disaster recovery strategy. Each objective requires specific policies, responsibilities, and procedures.

>> To learn more about medical image storage, read What Is Aurora Drive and How Does It Support DICOM Image Storage in the Cloud?

>> You can also read DICOM Images in the Cloud: How to Scale Radiology Storage Without Expanding Infrastructure.

Security, interoperability, and migration: three connected decisions

Security should not be reviewed only at the end of a project. It must be present from the design stage of any technology change.

This is especially important when the institution:

migrates to a new PACS;
integrates platforms;
enables remote access;
distributes reports among professionals;
shares studies with external users;
expands storage;
adopts cloud solutions;
operates across multiple sites;
retrieves historical studies.

A migration can move sensitive information to a new environment. An integration can open new routes for data exchange. A storage strategy can change where and how studies are retained.

Therefore, every decision must address access, permissions, traceability, availability, and integrity.

To learn more about these topics, read:

Common mistakes when managing security in digital radiology

Assuming security depends only on the IT department

The IT team can configure controls, but security also depends on processes, users, management decisions, and training.

The institution must address the issue across departments.

Sharing studies through informal channels

When results are distributed outside controlled channels, traceability is lost and the risk of exposure increases.

The solution must combine ease of access with control.

Failing to review user permissions

Permissions may become outdated because of role changes, departures, replacements, or temporary access.

Periodic review reduces unnecessary risks.

Failing to measure access and events

Without records, it is difficult to know what occurred.

The institution should have mechanisms to monitor access, relevant events, and critical actions.

Failing to distinguish storage from backup

Storing images does not necessarily mean having a backup or recovery plan.

Confusing these concepts can create a false sense of security.

Modernizing systems without reviewing processes

A modern system does not correct insecure practices on its own.

If the institution continues to use shared accounts, informal downloads, or excessive permissions, the risk remains.

Ignoring user training

Many incidents do not arise from complex technical failures, but from everyday habits.

Training the team helps reduce errors and strengthen the security culture.

Assuming a technical standard guarantees security on its own

Standards are important, but they do not replace proper implementation.

Security depends on how systems are configured, deployed, how access is managed, and how processes are audited.

How Pixeon helps strengthen a more secure radiology operation

A more secure radiology operation requires images, reports, and storage to function within a controlled, traceable, and available workflow.

Pixeon’s radiology solutions for Latin America focus on Pixeon Aurora PACS, the Reporting Center, and cloud-based medical image storage.

Pixeon Aurora PACS

Pixeon Aurora PACS enables the capture, visualization, interpretation, storage, and distribution of medical images to be managed.

Within a security strategy, the PACS plays a central role because it organizes access to studies, allows prior studies to be consulted, facilitates image distribution, and helps keep the radiology workflow under control.

It also helps reduce dependence on informal processes when the institution has a platform designed to manage images and access in a more organized manner.

Reporting Center

Pixeon’s Reporting Center enables radiology reports to be created, managed, and delivered from a cloud-based platform integrated with Pixeon Aurora PACS.

This integration helps connect the reporting process more closely with images, study distribution, and remote work.

In terms of operational security, a Reporting Center can help organize access, assignments, report review, and result delivery within a more traceable workflow.

Aurora Drive and cloud-based DICOM storage

Aurora Drive complements the radiology ecosystem through cloud-based DICOM image storage.

Its contribution is related to the scalable retention and retrieval of recent and historical studies, reducing dependence on local physical infrastructure and supporting the growth of the radiology archive.

Secure storage must combine capacity, availability, access policies, and organized study retrieval.

Security as part of an integrated workflow

Security improves when the radiology workflow is connected.

An integrated operation can help:

control access;
reduce informal transmissions;
maintain the link between image and report;
improve traceability;
organize retrieval of historical studies;
support remote work;
facilitate operational continuity;
support storage growth.

>> To understand how these stages connect, read How to Connect PACS, Reporting, and Storage to Improve the Radiology Workflow.

>> You can also read Radiology Indicators: Which Metrics to Track to Improve Productivity, Turnaround Times, and Operational Quality to learn more about monitoring traceability, turnaround times, and availability within the workflow.

>> Does your institution need to strengthen the security of images, reports, and storage? Talk to a Pixeon specialist and assess how to move toward a more controlled and traceable radiology operation that is prepared to grow.

Medical image security checklist

Before modernizing or reviewing your radiology operation, verify whether your institution can answer these questions.

Access

Do users have profiles defined according to their roles?
Are there different permissions for viewing, reporting, modifying, or sharing studies?
Is the use of shared credentials avoided?
Are active users reviewed periodically?
Is remote access protected by appropriate controls?

Traceability

Is access to studies and reports recorded?
Can critical actions be audited?
Is it known who shared or delivered a result?
Are relevant changes recorded?
Can the institution investigate events or incidents?

Storage

Are archiving policies in place?
Is the growth rate of the radiology archive known?
Can historical studies be retrieved securely?
Is the difference between storage, backup, and disaster recovery clear?
Have responsibilities for retention and recovery been defined?

Reports

Does the report remain linked to the images?
Are permissions for editing, review, and delivery controlled?
Is report distribution traceable?
Are secure channels available for results?
Is the informal transmission of sensitive information avoided?

Continuity

Is there a plan for system failures?
Have procedures for accessing critical studies been defined?
Is it clear who must act during an interruption?
Are recovery mechanisms tested?
Does the institution know its most vulnerable points?

Internal processes

Do users receive security training?
Are access and distribution procedures documented?
Are manual or informal practices reviewed?
Is security considered in migration and interoperability projects?
Do vendors and internal teams have clear responsibilities?

If several answers are unclear, the institution probably needs to review its security strategy before expanding access, migrating systems, or distributing studies through new channels.

Conclusion

Medical image security is a fundamental requirement for digital radiology.

It is not only about protecting files or restricting access. It is about ensuring that studies, reports, and clinical data flow with control, traceability, and integrity, and that they are available to authorized users when operations require them.

An effective security strategy combines technology, internal processes, user management, appropriate storage, training, and monitoring.

It must also support every modernization decision: migrating a PACS, integrating systems, enabling remote reporting, sharing results, or expanding storage.

A secure radiology operation is not one that blocks the workflow. It is one that enables people to work more effectively with information that is protected, accessible, and responsibly managed.

Frequently asked questions about medical image security

What is medical image security?

Medical image security is the set of measures, processes, and controls designed to protect studies, reports, patient data, access, storage, and result distribution within a digital radiology operation.

What is the difference between data security and radiation protection?

Radiation protection relates to radiation exposure, dose, protocols, and patient safety during the study. Data security focuses on protecting images, reports, access, privacy, traceability, integrity, and availability of digital information.

Why is it important to protect DICOM images?

DICOM images may contain clinical information and patient data. Protecting them helps preserve privacy, integrity, availability, and the correct relationship between patient, study, series, image, and report.

What risks exist in digital radiology?

Risks include unauthorized access, excessive permissions, loss of traceability, studies shared through informal channels, availability failures, disorganized storage, outdated infrastructure, and human error.

How can access to radiology studies be protected?

The institution can protect access through individual user accounts, role-based permissions, authentication, periodic review of active accounts, action auditing, secure distribution channels, and team training.

What is the difference between confidentiality, integrity, and availability?

Confidentiality ensures that only authorized users have access. Integrity protects information so that it remains complete and free from improper alterations. Availability ensures that studies and reports can be accessed when authorized professionals need them.

Is cloud storage secure for medical images?

It can be part of a secure strategy if implemented with appropriate controls for access, availability, traceability, storage policies, and recovery. Security also depends on configuration, internal processes, and defined responsibilities.

Which measures help protect radiology reports?

Helpful measures include permission management, control over editing and review, linking reports to images, traceable delivery, secure access channels, and training for users who participate in the reporting workflow.

What should an institution evaluate before sharing studies digitally?

It should evaluate who will have access, through which channel, for how long, with which permissions, what information will be shared, how access will be recorded, and which controls will prevent improper transmissions or loss of traceability.

Which indicators can help monitor security and traceability?

Useful indicators include access by profile, active users, recorded events, shared studies, availability failures, unauthorized access attempts, historical study retrieval times, and audited critical actions.

What other Pixeon content can help modernize radiology operations?

To learn more about PACS, reporting, storage, migration, interoperability, indicators, and radiology workflow integration, read the following content:

About Pixeon

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Our Pixeon Aurora PACS has been recognized four times by KLAS Research. In addition, our diagnostic medicine management system, Pixeon Korus, serves nearly 2 million patients and processes more than 9 million exams annually.

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